<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>django.db.models.lookups — Django 1.8.19 documentation</title>
<link rel="stylesheet" href="../../../../_static/default.css" type="text/css" />
<link rel="stylesheet" href="../../../../_static/pygments.css" type="text/css" />
<script type="text/javascript">
var DOCUMENTATION_OPTIONS = {
URL_ROOT: '../../../../',
VERSION: '1.8.19',
COLLAPSE_INDEX: false,
FILE_SUFFIX: '.html',
HAS_SOURCE: true
};
</script>
<script type="text/javascript" src="../../../../_static/jquery.js"></script>
<script type="text/javascript" src="../../../../_static/underscore.js"></script>
<script type="text/javascript" src="../../../../_static/doctools.js"></script>
<link rel="index" title="Index" href="../../../../genindex.html" />
<link rel="search" title="Search" href="../../../../search.html" />
<link rel="top" title="Django 1.8.19 documentation" href="../../../../contents.html" />
<link rel="up" title="django" href="../../../django.html" />
<script type="text/javascript" src="../../../../templatebuiltins.js"></script>
<script type="text/javascript">
(function($) {
if (!django_template_builtins) {
// templatebuiltins.js missing, do nothing.
return;
}
$(document).ready(function() {
// Hyperlink Django template tags and filters
var base = "../../../../ref/templates/builtins.html";
if (base == "#") {
// Special case for builtins.html itself
base = "";
}
// Tags are keywords, class '.k'
$("div.highlight\\-html\\+django span.k").each(function(i, elem) {
var tagname = $(elem).text();
if ($.inArray(tagname, django_template_builtins.ttags) != -1) {
var fragment = tagname.replace(/_/, '-');
$(elem).html("<a href='" + base + "#" + fragment + "'>" + tagname + "</a>");
}
});
// Filters are functions, class '.nf'
$("div.highlight\\-html\\+django span.nf").each(function(i, elem) {
var filtername = $(elem).text();
if ($.inArray(filtername, django_template_builtins.tfilters) != -1) {
var fragment = filtername.replace(/_/, '-');
$(elem).html("<a href='" + base + "#" + fragment + "'>" + filtername + "</a>");
}
});
});
})(jQuery);
</script>
</head>
<body role="document">
<div class="document">
<div id="custom-doc" class="yui-t6">
<div id="hd">
<h1><a href="../../../../index.html">Django 1.8.19 documentation</a></h1>
<div id="global-nav">
<a title="Home page" href="../../../../index.html">Home</a> |
<a title="Table of contents" href="../../../../contents.html">Table of contents</a> |
<a title="Global index" href="../../../../genindex.html">Index</a> |
<a title="Module index" href="../../../../py-modindex.html">Modules</a>
</div>
<div class="nav">
<a href="../../../index.html" title="Module code" accesskey="U">up</a></div>
</div>
<div id="bd">
<div id="yui-main">
<div class="yui-b">
<div class="yui-g" id="_modules-django-db-models-lookups">
<h1>Source code for django.db.models.lookups</h1><div class="highlight"><pre>
<span></span><span class="kn">import</span> <span class="nn">inspect</span>
<span class="kn">from</span> <span class="nn">copy</span> <span class="k">import</span> <span class="n">copy</span>
<span class="kn">from</span> <span class="nn">django.conf</span> <span class="k">import</span> <span class="n">settings</span>
<span class="kn">from</span> <span class="nn">django.utils</span> <span class="k">import</span> <span class="n">timezone</span>
<span class="kn">from</span> <span class="nn">django.utils.functional</span> <span class="k">import</span> <span class="n">cached_property</span>
<span class="kn">from</span> <span class="nn">django.utils.six.moves</span> <span class="k">import</span> <span class="nb">range</span>
<span class="kn">from</span> <span class="nn">.query_utils</span> <span class="k">import</span> <span class="n">QueryWrapper</span>
<span class="k">class</span> <span class="nc">RegisterLookupMixin</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">_get_lookup</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">lookup_name</span><span class="p">):</span>
<span class="k">try</span><span class="p">:</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">class_lookups</span><span class="p">[</span><span class="n">lookup_name</span><span class="p">]</span>
<span class="k">except</span> <span class="ne">KeyError</span><span class="p">:</span>
<span class="c1"># To allow for inheritance, check parent class' class_lookups.</span>
<span class="k">for</span> <span class="n">parent</span> <span class="ow">in</span> <span class="n">inspect</span><span class="o">.</span><span class="n">getmro</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">__class__</span><span class="p">):</span>
<span class="k">if</span> <span class="s1">'class_lookups'</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">parent</span><span class="o">.</span><span class="n">__dict__</span><span class="p">:</span>
<span class="k">continue</span>
<span class="k">if</span> <span class="n">lookup_name</span> <span class="ow">in</span> <span class="n">parent</span><span class="o">.</span><span class="n">class_lookups</span><span class="p">:</span>
<span class="k">return</span> <span class="n">parent</span><span class="o">.</span><span class="n">class_lookups</span><span class="p">[</span><span class="n">lookup_name</span><span class="p">]</span>
<span class="k">except</span> <span class="ne">AttributeError</span><span class="p">:</span>
<span class="c1"># This class didn't have any class_lookups</span>
<span class="k">pass</span>
<span class="k">return</span> <span class="kc">None</span>
<span class="k">def</span> <span class="nf">get_lookup</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">lookup_name</span><span class="p">):</span>
<span class="n">found</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_lookup</span><span class="p">(</span><span class="n">lookup_name</span><span class="p">)</span>
<span class="k">if</span> <span class="n">found</span> <span class="ow">is</span> <span class="kc">None</span> <span class="ow">and</span> <span class="nb">hasattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="s1">'output_field'</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">output_field</span><span class="o">.</span><span class="n">get_lookup</span><span class="p">(</span><span class="n">lookup_name</span><span class="p">)</span>
<span class="k">if</span> <span class="n">found</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">issubclass</span><span class="p">(</span><span class="n">found</span><span class="p">,</span> <span class="n">Lookup</span><span class="p">):</span>
<span class="k">return</span> <span class="kc">None</span>
<span class="k">return</span> <span class="n">found</span>
<span class="k">def</span> <span class="nf">get_transform</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">lookup_name</span><span class="p">):</span>
<span class="n">found</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_lookup</span><span class="p">(</span><span class="n">lookup_name</span><span class="p">)</span>
<span class="k">if</span> <span class="n">found</span> <span class="ow">is</span> <span class="kc">None</span> <span class="ow">and</span> <span class="nb">hasattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="s1">'output_field'</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">output_field</span><span class="o">.</span><span class="n">get_transform</span><span class="p">(</span><span class="n">lookup_name</span><span class="p">)</span>
<span class="k">if</span> <span class="n">found</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">issubclass</span><span class="p">(</span><span class="n">found</span><span class="p">,</span> <span class="n">Transform</span><span class="p">):</span>
<span class="k">return</span> <span class="kc">None</span>
<span class="k">return</span> <span class="n">found</span>
<span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">register_lookup</span><span class="p">(</span><span class="n">cls</span><span class="p">,</span> <span class="n">lookup</span><span class="p">):</span>
<span class="k">if</span> <span class="s1">'class_lookups'</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">cls</span><span class="o">.</span><span class="n">__dict__</span><span class="p">:</span>
<span class="n">cls</span><span class="o">.</span><span class="n">class_lookups</span> <span class="o">=</span> <span class="p">{}</span>
<span class="n">cls</span><span class="o">.</span><span class="n">class_lookups</span><span class="p">[</span><span class="n">lookup</span><span class="o">.</span><span class="n">lookup_name</span><span class="p">]</span> <span class="o">=</span> <span class="n">lookup</span>
<span class="k">return</span> <span class="n">lookup</span>
<span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">_unregister_lookup</span><span class="p">(</span><span class="n">cls</span><span class="p">,</span> <span class="n">lookup</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Removes given lookup from cls lookups. Meant to be used in</span>
<span class="sd"> tests only.</span>
<span class="sd"> """</span>
<span class="k">del</span> <span class="n">cls</span><span class="o">.</span><span class="n">class_lookups</span><span class="p">[</span><span class="n">lookup</span><span class="o">.</span><span class="n">lookup_name</span><span class="p">]</span>
<div class="viewcode-block" id="Transform"><a class="viewcode-back" href="../../../../ref/models/lookups.html#django.db.models.Transform">[docs]</a><span class="k">class</span> <span class="nc">Transform</span><span class="p">(</span><span class="n">RegisterLookupMixin</span><span class="p">):</span>
<span class="n">bilateral</span> <span class="o">=</span> <span class="kc">False</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">lhs</span><span class="p">,</span> <span class="n">lookups</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">lhs</span> <span class="o">=</span> <span class="n">lhs</span>
<span class="bp">self</span><span class="o">.</span><span class="n">init_lookups</span> <span class="o">=</span> <span class="n">lookups</span><span class="p">[:]</span>
<div class="viewcode-block" id="Transform.as_sql"><a class="viewcode-back" href="../../../../ref/models/lookups.html#django.db.models.Transform.as_sql">[docs]</a> <span class="k">def</span> <span class="nf">as_sql</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">NotImplementedError</span></div>
<span class="nd">@cached_property</span>
<span class="k">def</span> <span class="nf">output_field</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="o">.</span><span class="n">output_field</span>
<span class="k">def</span> <span class="nf">copy</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="n">copy</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">relabeled_clone</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">relabels</span><span class="p">):</span>
<span class="n">copy</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span>
<span class="n">copy</span><span class="o">.</span><span class="n">lhs</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="o">.</span><span class="n">relabeled_clone</span><span class="p">(</span><span class="n">relabels</span><span class="p">)</span>
<span class="k">return</span> <span class="n">copy</span>
<span class="k">def</span> <span class="nf">get_group_by_cols</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="o">.</span><span class="n">get_group_by_cols</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">get_bilateral_transforms</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="p">,</span> <span class="s1">'get_bilateral_transforms'</span><span class="p">):</span>
<span class="n">bilateral_transforms</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="o">.</span><span class="n">get_bilateral_transforms</span><span class="p">()</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">bilateral_transforms</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">bilateral</span><span class="p">:</span>
<span class="n">bilateral_transforms</span><span class="o">.</span><span class="n">append</span><span class="p">((</span><span class="bp">self</span><span class="o">.</span><span class="n">__class__</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">init_lookups</span><span class="p">))</span>
<span class="k">return</span> <span class="n">bilateral_transforms</span>
<span class="nd">@cached_property</span>
<span class="k">def</span> <span class="nf">contains_aggregate</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="o">.</span><span class="n">contains_aggregate</span></div>
<div class="viewcode-block" id="Lookup"><a class="viewcode-back" href="../../../../ref/models/lookups.html#django.db.models.Lookup">[docs]</a><span class="k">class</span> <span class="nc">Lookup</span><span class="p">(</span><span class="n">RegisterLookupMixin</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="kc">None</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">lhs</span><span class="p">,</span> <span class="n">rhs</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">rhs</span> <span class="o">=</span> <span class="n">lhs</span><span class="p">,</span> <span class="n">rhs</span>
<span class="bp">self</span><span class="o">.</span><span class="n">rhs</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_prep_lookup</span><span class="p">()</span>
<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="p">,</span> <span class="s1">'get_bilateral_transforms'</span><span class="p">):</span>
<span class="n">bilateral_transforms</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="o">.</span><span class="n">get_bilateral_transforms</span><span class="p">()</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">bilateral_transforms</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">if</span> <span class="n">bilateral_transforms</span><span class="p">:</span>
<span class="c1"># We should warn the user as soon as possible if he is trying to apply</span>
<span class="c1"># a bilateral transformation on a nested QuerySet: that won't work.</span>
<span class="c1"># We need to import QuerySet here so as to avoid circular</span>
<span class="kn">from</span> <span class="nn">django.db.models.query</span> <span class="k">import</span> <span class="n">QuerySet</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">rhs</span><span class="p">,</span> <span class="n">QuerySet</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">NotImplementedError</span><span class="p">(</span><span class="s2">"Bilateral transformations on nested querysets are not supported."</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">bilateral_transforms</span> <span class="o">=</span> <span class="n">bilateral_transforms</span>
<span class="k">def</span> <span class="nf">apply_bilateral_transforms</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="k">for</span> <span class="n">transform</span><span class="p">,</span> <span class="n">lookups</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">bilateral_transforms</span><span class="p">:</span>
<span class="n">value</span> <span class="o">=</span> <span class="n">transform</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">lookups</span><span class="p">)</span>
<span class="k">return</span> <span class="n">value</span>
<span class="k">def</span> <span class="nf">batch_process_rhs</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">,</span> <span class="n">rhs</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="k">if</span> <span class="n">rhs</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">rhs</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">rhs</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">bilateral_transforms</span><span class="p">:</span>
<span class="n">sqls</span><span class="p">,</span> <span class="n">sqls_params</span> <span class="o">=</span> <span class="p">[],</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">rhs</span><span class="p">:</span>
<span class="n">value</span> <span class="o">=</span> <span class="n">QueryWrapper</span><span class="p">(</span><span class="s1">'</span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span>
<span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="o">.</span><span class="n">output_field</span><span class="o">.</span><span class="n">get_db_prep_value</span><span class="p">(</span><span class="n">p</span><span class="p">,</span> <span class="n">connection</span><span class="p">)])</span>
<span class="n">value</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">apply_bilateral_transforms</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
<span class="n">sql</span><span class="p">,</span> <span class="n">sql_params</span> <span class="o">=</span> <span class="n">compiler</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
<span class="n">sqls</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">sql</span><span class="p">)</span>
<span class="n">sqls_params</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">sql_params</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">params</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="o">.</span><span class="n">output_field</span><span class="o">.</span><span class="n">get_db_prep_lookup</span><span class="p">(</span>
<span class="bp">self</span><span class="o">.</span><span class="n">lookup_name</span><span class="p">,</span> <span class="n">rhs</span><span class="p">,</span> <span class="n">connection</span><span class="p">,</span> <span class="n">prepared</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
<span class="n">sqls</span><span class="p">,</span> <span class="n">sqls_params</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'</span><span class="si">%s</span><span class="s1">'</span><span class="p">]</span> <span class="o">*</span> <span class="nb">len</span><span class="p">(</span><span class="n">params</span><span class="p">),</span> <span class="n">params</span>
<span class="k">return</span> <span class="n">sqls</span><span class="p">,</span> <span class="n">sqls_params</span>
<span class="k">def</span> <span class="nf">get_prep_lookup</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="o">.</span><span class="n">output_field</span><span class="o">.</span><span class="n">get_prep_lookup</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">lookup_name</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">rhs</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">get_db_prep_lookup</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">,</span> <span class="n">connection</span><span class="p">):</span>
<span class="k">return</span> <span class="p">(</span>
<span class="s1">'</span><span class="si">%s</span><span class="s1">'</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="o">.</span><span class="n">output_field</span><span class="o">.</span><span class="n">get_db_prep_lookup</span><span class="p">(</span>
<span class="bp">self</span><span class="o">.</span><span class="n">lookup_name</span><span class="p">,</span> <span class="n">value</span><span class="p">,</span> <span class="n">connection</span><span class="p">,</span> <span class="n">prepared</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
<div class="viewcode-block" id="Lookup.process_lhs"><a class="viewcode-back" href="../../../../ref/models/lookups.html#django.db.models.Lookup.process_lhs">[docs]</a> <span class="k">def</span> <span class="nf">process_lhs</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">,</span> <span class="n">lhs</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="n">lhs</span> <span class="o">=</span> <span class="n">lhs</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">lhs</span>
<span class="k">return</span> <span class="n">compiler</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span><span class="n">lhs</span><span class="p">)</span></div>
<div class="viewcode-block" id="Lookup.process_rhs"><a class="viewcode-back" href="../../../../ref/models/lookups.html#django.db.models.Lookup.process_rhs">[docs]</a> <span class="k">def</span> <span class="nf">process_rhs</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">):</span>
<span class="n">value</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">rhs</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">bilateral_transforms</span><span class="p">:</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">rhs_is_direct_value</span><span class="p">():</span>
<span class="c1"># Do not call get_db_prep_lookup here as the value will be</span>
<span class="c1"># transformed before being used for lookup</span>
<span class="n">value</span> <span class="o">=</span> <span class="n">QueryWrapper</span><span class="p">(</span><span class="s2">"</span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span>
<span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="o">.</span><span class="n">output_field</span><span class="o">.</span><span class="n">get_db_prep_value</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">connection</span><span class="p">)])</span>
<span class="n">value</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">apply_bilateral_transforms</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
<span class="c1"># Due to historical reasons there are a couple of different</span>
<span class="c1"># ways to produce sql here. get_compiler is likely a Query</span>
<span class="c1"># instance, _as_sql QuerySet and as_sql just something with</span>
<span class="c1"># as_sql. Finally the value can of course be just plain</span>
<span class="c1"># Python value.</span>
<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="s1">'get_compiler'</span><span class="p">):</span>
<span class="n">value</span> <span class="o">=</span> <span class="n">value</span><span class="o">.</span><span class="n">get_compiler</span><span class="p">(</span><span class="n">connection</span><span class="o">=</span><span class="n">connection</span><span class="p">)</span>
<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="s1">'as_sql'</span><span class="p">):</span>
<span class="n">sql</span><span class="p">,</span> <span class="n">params</span> <span class="o">=</span> <span class="n">compiler</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
<span class="k">return</span> <span class="s1">'('</span> <span class="o">+</span> <span class="n">sql</span> <span class="o">+</span> <span class="s1">')'</span><span class="p">,</span> <span class="n">params</span>
<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="s1">'_as_sql'</span><span class="p">):</span>
<span class="n">sql</span><span class="p">,</span> <span class="n">params</span> <span class="o">=</span> <span class="n">value</span><span class="o">.</span><span class="n">_as_sql</span><span class="p">(</span><span class="n">connection</span><span class="o">=</span><span class="n">connection</span><span class="p">)</span>
<span class="k">return</span> <span class="s1">'('</span> <span class="o">+</span> <span class="n">sql</span> <span class="o">+</span> <span class="s1">')'</span><span class="p">,</span> <span class="n">params</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_db_prep_lookup</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span></div>
<span class="k">def</span> <span class="nf">rhs_is_direct_value</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="ow">not</span><span class="p">(</span>
<span class="nb">hasattr</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">rhs</span><span class="p">,</span> <span class="s1">'as_sql'</span><span class="p">)</span> <span class="ow">or</span>
<span class="nb">hasattr</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">rhs</span><span class="p">,</span> <span class="s1">'_as_sql'</span><span class="p">)</span> <span class="ow">or</span>
<span class="nb">hasattr</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">rhs</span><span class="p">,</span> <span class="s1">'get_compiler'</span><span class="p">))</span>
<span class="k">def</span> <span class="nf">relabeled_clone</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">relabels</span><span class="p">):</span>
<span class="n">new</span> <span class="o">=</span> <span class="n">copy</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
<span class="n">new</span><span class="o">.</span><span class="n">lhs</span> <span class="o">=</span> <span class="n">new</span><span class="o">.</span><span class="n">lhs</span><span class="o">.</span><span class="n">relabeled_clone</span><span class="p">(</span><span class="n">relabels</span><span class="p">)</span>
<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">new</span><span class="o">.</span><span class="n">rhs</span><span class="p">,</span> <span class="s1">'relabeled_clone'</span><span class="p">):</span>
<span class="n">new</span><span class="o">.</span><span class="n">rhs</span> <span class="o">=</span> <span class="n">new</span><span class="o">.</span><span class="n">rhs</span><span class="o">.</span><span class="n">relabeled_clone</span><span class="p">(</span><span class="n">relabels</span><span class="p">)</span>
<span class="k">return</span> <span class="n">new</span>
<span class="k">def</span> <span class="nf">get_group_by_cols</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">cols</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="o">.</span><span class="n">get_group_by_cols</span><span class="p">()</span>
<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">rhs</span><span class="p">,</span> <span class="s1">'get_group_by_cols'</span><span class="p">):</span>
<span class="n">cols</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">rhs</span><span class="o">.</span><span class="n">get_group_by_cols</span><span class="p">())</span>
<span class="k">return</span> <span class="n">cols</span>
<span class="k">def</span> <span class="nf">as_sql</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">NotImplementedError</span>
<span class="nd">@cached_property</span>
<span class="k">def</span> <span class="nf">contains_aggregate</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="o">.</span><span class="n">contains_aggregate</span> <span class="ow">or</span> <span class="nb">getattr</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">rhs</span><span class="p">,</span> <span class="s1">'contains_aggregate'</span><span class="p">,</span> <span class="kc">False</span><span class="p">)</span></div>
<span class="k">class</span> <span class="nc">BuiltinLookup</span><span class="p">(</span><span class="n">Lookup</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">process_lhs</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">,</span> <span class="n">lhs</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="n">lhs_sql</span><span class="p">,</span> <span class="n">params</span> <span class="o">=</span> <span class="nb">super</span><span class="p">(</span><span class="n">BuiltinLookup</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">process_lhs</span><span class="p">(</span>
<span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">,</span> <span class="n">lhs</span><span class="p">)</span>
<span class="n">field_internal_type</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="o">.</span><span class="n">output_field</span><span class="o">.</span><span class="n">get_internal_type</span><span class="p">()</span>
<span class="n">db_type</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="o">.</span><span class="n">output_field</span><span class="o">.</span><span class="n">db_type</span><span class="p">(</span><span class="n">connection</span><span class="o">=</span><span class="n">connection</span><span class="p">)</span>
<span class="n">lhs_sql</span> <span class="o">=</span> <span class="n">connection</span><span class="o">.</span><span class="n">ops</span><span class="o">.</span><span class="n">field_cast_sql</span><span class="p">(</span>
<span class="n">db_type</span><span class="p">,</span> <span class="n">field_internal_type</span><span class="p">)</span> <span class="o">%</span> <span class="n">lhs_sql</span>
<span class="n">lhs_sql</span> <span class="o">=</span> <span class="n">connection</span><span class="o">.</span><span class="n">ops</span><span class="o">.</span><span class="n">lookup_cast</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">lookup_name</span><span class="p">,</span> <span class="n">field_internal_type</span><span class="p">)</span> <span class="o">%</span> <span class="n">lhs_sql</span>
<span class="k">return</span> <span class="n">lhs_sql</span><span class="p">,</span> <span class="nb">list</span><span class="p">(</span><span class="n">params</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">as_sql</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">):</span>
<span class="n">lhs_sql</span><span class="p">,</span> <span class="n">params</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">process_lhs</span><span class="p">(</span><span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="n">rhs_sql</span><span class="p">,</span> <span class="n">rhs_params</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">process_rhs</span><span class="p">(</span><span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="n">params</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">rhs_params</span><span class="p">)</span>
<span class="n">rhs_sql</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_rhs_op</span><span class="p">(</span><span class="n">connection</span><span class="p">,</span> <span class="n">rhs_sql</span><span class="p">)</span>
<span class="k">return</span> <span class="s1">'</span><span class="si">%s</span><span class="s1"> </span><span class="si">%s</span><span class="s1">'</span> <span class="o">%</span> <span class="p">(</span><span class="n">lhs_sql</span><span class="p">,</span> <span class="n">rhs_sql</span><span class="p">),</span> <span class="n">params</span>
<span class="k">def</span> <span class="nf">get_rhs_op</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">connection</span><span class="p">,</span> <span class="n">rhs</span><span class="p">):</span>
<span class="k">return</span> <span class="n">connection</span><span class="o">.</span><span class="n">operators</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">lookup_name</span><span class="p">]</span> <span class="o">%</span> <span class="n">rhs</span>
<span class="n">default_lookups</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">class</span> <span class="nc">Exact</span><span class="p">(</span><span class="n">BuiltinLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'exact'</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'exact'</span><span class="p">]</span> <span class="o">=</span> <span class="n">Exact</span>
<span class="k">class</span> <span class="nc">IExact</span><span class="p">(</span><span class="n">BuiltinLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'iexact'</span>
<span class="k">def</span> <span class="nf">process_rhs</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">qn</span><span class="p">,</span> <span class="n">connection</span><span class="p">):</span>
<span class="n">rhs</span><span class="p">,</span> <span class="n">params</span> <span class="o">=</span> <span class="nb">super</span><span class="p">(</span><span class="n">IExact</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">process_rhs</span><span class="p">(</span><span class="n">qn</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="k">if</span> <span class="n">params</span><span class="p">:</span>
<span class="n">params</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">=</span> <span class="n">connection</span><span class="o">.</span><span class="n">ops</span><span class="o">.</span><span class="n">prep_for_iexact_query</span><span class="p">(</span><span class="n">params</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
<span class="k">return</span> <span class="n">rhs</span><span class="p">,</span> <span class="n">params</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'iexact'</span><span class="p">]</span> <span class="o">=</span> <span class="n">IExact</span>
<span class="k">class</span> <span class="nc">GreaterThan</span><span class="p">(</span><span class="n">BuiltinLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'gt'</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'gt'</span><span class="p">]</span> <span class="o">=</span> <span class="n">GreaterThan</span>
<span class="k">class</span> <span class="nc">GreaterThanOrEqual</span><span class="p">(</span><span class="n">BuiltinLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'gte'</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'gte'</span><span class="p">]</span> <span class="o">=</span> <span class="n">GreaterThanOrEqual</span>
<span class="k">class</span> <span class="nc">LessThan</span><span class="p">(</span><span class="n">BuiltinLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'lt'</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'lt'</span><span class="p">]</span> <span class="o">=</span> <span class="n">LessThan</span>
<span class="k">class</span> <span class="nc">LessThanOrEqual</span><span class="p">(</span><span class="n">BuiltinLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'lte'</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'lte'</span><span class="p">]</span> <span class="o">=</span> <span class="n">LessThanOrEqual</span>
<span class="k">class</span> <span class="nc">In</span><span class="p">(</span><span class="n">BuiltinLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'in'</span>
<span class="k">def</span> <span class="nf">process_rhs</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">rhs_is_direct_value</span><span class="p">():</span>
<span class="c1"># rhs should be an iterable, we use batch_process_rhs</span>
<span class="c1"># to prepare/transform those values</span>
<span class="n">rhs</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">rhs</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">rhs</span><span class="p">:</span>
<span class="kn">from</span> <span class="nn">django.db.models.sql.datastructures</span> <span class="k">import</span> <span class="n">EmptyResultSet</span>
<span class="k">raise</span> <span class="n">EmptyResultSet</span>
<span class="n">sqls</span><span class="p">,</span> <span class="n">sqls_params</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">batch_process_rhs</span><span class="p">(</span><span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">,</span> <span class="n">rhs</span><span class="p">)</span>
<span class="n">placeholder</span> <span class="o">=</span> <span class="s1">'('</span> <span class="o">+</span> <span class="s1">', '</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">sqls</span><span class="p">)</span> <span class="o">+</span> <span class="s1">')'</span>
<span class="k">return</span> <span class="p">(</span><span class="n">placeholder</span><span class="p">,</span> <span class="n">sqls_params</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="nb">super</span><span class="p">(</span><span class="n">In</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">process_rhs</span><span class="p">(</span><span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">get_rhs_op</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">connection</span><span class="p">,</span> <span class="n">rhs</span><span class="p">):</span>
<span class="k">return</span> <span class="s1">'IN </span><span class="si">%s</span><span class="s1">'</span> <span class="o">%</span> <span class="n">rhs</span>
<span class="k">def</span> <span class="nf">as_sql</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">):</span>
<span class="n">max_in_list_size</span> <span class="o">=</span> <span class="n">connection</span><span class="o">.</span><span class="n">ops</span><span class="o">.</span><span class="n">max_in_list_size</span><span class="p">()</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">rhs_is_direct_value</span><span class="p">()</span> <span class="ow">and</span> <span class="p">(</span><span class="n">max_in_list_size</span> <span class="ow">and</span>
<span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">rhs</span><span class="p">)</span> <span class="o">></span> <span class="n">max_in_list_size</span><span class="p">):</span>
<span class="c1"># This is a special case for Oracle which limits the number of elements</span>
<span class="c1"># which can appear in an 'IN' clause.</span>
<span class="n">lhs</span><span class="p">,</span> <span class="n">lhs_params</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">process_lhs</span><span class="p">(</span><span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="n">rhs</span><span class="p">,</span> <span class="n">rhs_params</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">batch_process_rhs</span><span class="p">(</span><span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="n">in_clause_elements</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'('</span><span class="p">]</span>
<span class="n">params</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">offset</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="n">rhs_params</span><span class="p">),</span> <span class="n">max_in_list_size</span><span class="p">):</span>
<span class="k">if</span> <span class="n">offset</span> <span class="o">></span> <span class="mi">0</span><span class="p">:</span>
<span class="n">in_clause_elements</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s1">' OR '</span><span class="p">)</span>
<span class="n">in_clause_elements</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s1">'</span><span class="si">%s</span><span class="s1"> IN ('</span> <span class="o">%</span> <span class="n">lhs</span><span class="p">)</span>
<span class="n">params</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">lhs_params</span><span class="p">)</span>
<span class="n">sqls</span> <span class="o">=</span> <span class="n">rhs</span><span class="p">[</span><span class="n">offset</span><span class="p">:</span> <span class="n">offset</span> <span class="o">+</span> <span class="n">max_in_list_size</span><span class="p">]</span>
<span class="n">sqls_params</span> <span class="o">=</span> <span class="n">rhs_params</span><span class="p">[</span><span class="n">offset</span><span class="p">:</span> <span class="n">offset</span> <span class="o">+</span> <span class="n">max_in_list_size</span><span class="p">]</span>
<span class="n">param_group</span> <span class="o">=</span> <span class="s1">', '</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">sqls</span><span class="p">)</span>
<span class="n">in_clause_elements</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">param_group</span><span class="p">)</span>
<span class="n">in_clause_elements</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s1">')'</span><span class="p">)</span>
<span class="n">params</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">sqls_params</span><span class="p">)</span>
<span class="n">in_clause_elements</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s1">')'</span><span class="p">)</span>
<span class="k">return</span> <span class="s1">''</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">in_clause_elements</span><span class="p">),</span> <span class="n">params</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="nb">super</span><span class="p">(</span><span class="n">In</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">as_sql</span><span class="p">(</span><span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'in'</span><span class="p">]</span> <span class="o">=</span> <span class="n">In</span>
<span class="k">class</span> <span class="nc">PatternLookup</span><span class="p">(</span><span class="n">BuiltinLookup</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">get_rhs_op</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">connection</span><span class="p">,</span> <span class="n">rhs</span><span class="p">):</span>
<span class="c1"># Assume we are in startswith. We need to produce SQL like:</span>
<span class="c1"># col LIKE %s, ['thevalue%']</span>
<span class="c1"># For python values we can (and should) do that directly in Python,</span>
<span class="c1"># but if the value is for example reference to other column, then</span>
<span class="c1"># we need to add the % pattern match to the lookup by something like</span>
<span class="c1"># col LIKE othercol || '%%'</span>
<span class="c1"># So, for Python values we don't need any special pattern, but for</span>
<span class="c1"># SQL reference values or SQL transformations we need the correct</span>
<span class="c1"># pattern added.</span>
<span class="k">if</span> <span class="p">(</span><span class="nb">hasattr</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">rhs</span><span class="p">,</span> <span class="s1">'get_compiler'</span><span class="p">)</span> <span class="ow">or</span> <span class="nb">hasattr</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">rhs</span><span class="p">,</span> <span class="s1">'as_sql'</span><span class="p">)</span>
<span class="ow">or</span> <span class="nb">hasattr</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">rhs</span><span class="p">,</span> <span class="s1">'_as_sql'</span><span class="p">)</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">bilateral_transforms</span><span class="p">):</span>
<span class="n">pattern</span> <span class="o">=</span> <span class="n">connection</span><span class="o">.</span><span class="n">pattern_ops</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">lookup_name</span><span class="p">]</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">connection</span><span class="o">.</span><span class="n">pattern_esc</span><span class="p">)</span>
<span class="k">return</span> <span class="n">pattern</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">rhs</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="nb">super</span><span class="p">(</span><span class="n">PatternLookup</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">get_rhs_op</span><span class="p">(</span><span class="n">connection</span><span class="p">,</span> <span class="n">rhs</span><span class="p">)</span>
<span class="k">class</span> <span class="nc">Contains</span><span class="p">(</span><span class="n">PatternLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'contains'</span>
<span class="k">def</span> <span class="nf">process_rhs</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">qn</span><span class="p">,</span> <span class="n">connection</span><span class="p">):</span>
<span class="n">rhs</span><span class="p">,</span> <span class="n">params</span> <span class="o">=</span> <span class="nb">super</span><span class="p">(</span><span class="n">Contains</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">process_rhs</span><span class="p">(</span><span class="n">qn</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="k">if</span> <span class="n">params</span> <span class="ow">and</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">bilateral_transforms</span><span class="p">:</span>
<span class="n">params</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"</span><span class="si">%%%s%%</span><span class="s2">"</span> <span class="o">%</span> <span class="n">connection</span><span class="o">.</span><span class="n">ops</span><span class="o">.</span><span class="n">prep_for_like_query</span><span class="p">(</span><span class="n">params</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
<span class="k">return</span> <span class="n">rhs</span><span class="p">,</span> <span class="n">params</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'contains'</span><span class="p">]</span> <span class="o">=</span> <span class="n">Contains</span>
<span class="k">class</span> <span class="nc">IContains</span><span class="p">(</span><span class="n">Contains</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'icontains'</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'icontains'</span><span class="p">]</span> <span class="o">=</span> <span class="n">IContains</span>
<span class="k">class</span> <span class="nc">StartsWith</span><span class="p">(</span><span class="n">PatternLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'startswith'</span>
<span class="k">def</span> <span class="nf">process_rhs</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">qn</span><span class="p">,</span> <span class="n">connection</span><span class="p">):</span>
<span class="n">rhs</span><span class="p">,</span> <span class="n">params</span> <span class="o">=</span> <span class="nb">super</span><span class="p">(</span><span class="n">StartsWith</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">process_rhs</span><span class="p">(</span><span class="n">qn</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="k">if</span> <span class="n">params</span> <span class="ow">and</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">bilateral_transforms</span><span class="p">:</span>
<span class="n">params</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"</span><span class="si">%s%%</span><span class="s2">"</span> <span class="o">%</span> <span class="n">connection</span><span class="o">.</span><span class="n">ops</span><span class="o">.</span><span class="n">prep_for_like_query</span><span class="p">(</span><span class="n">params</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
<span class="k">return</span> <span class="n">rhs</span><span class="p">,</span> <span class="n">params</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'startswith'</span><span class="p">]</span> <span class="o">=</span> <span class="n">StartsWith</span>
<span class="k">class</span> <span class="nc">IStartsWith</span><span class="p">(</span><span class="n">PatternLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'istartswith'</span>
<span class="k">def</span> <span class="nf">process_rhs</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">qn</span><span class="p">,</span> <span class="n">connection</span><span class="p">):</span>
<span class="n">rhs</span><span class="p">,</span> <span class="n">params</span> <span class="o">=</span> <span class="nb">super</span><span class="p">(</span><span class="n">IStartsWith</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">process_rhs</span><span class="p">(</span><span class="n">qn</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="k">if</span> <span class="n">params</span> <span class="ow">and</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">bilateral_transforms</span><span class="p">:</span>
<span class="n">params</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"</span><span class="si">%s%%</span><span class="s2">"</span> <span class="o">%</span> <span class="n">connection</span><span class="o">.</span><span class="n">ops</span><span class="o">.</span><span class="n">prep_for_like_query</span><span class="p">(</span><span class="n">params</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
<span class="k">return</span> <span class="n">rhs</span><span class="p">,</span> <span class="n">params</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'istartswith'</span><span class="p">]</span> <span class="o">=</span> <span class="n">IStartsWith</span>
<span class="k">class</span> <span class="nc">EndsWith</span><span class="p">(</span><span class="n">PatternLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'endswith'</span>
<span class="k">def</span> <span class="nf">process_rhs</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">qn</span><span class="p">,</span> <span class="n">connection</span><span class="p">):</span>
<span class="n">rhs</span><span class="p">,</span> <span class="n">params</span> <span class="o">=</span> <span class="nb">super</span><span class="p">(</span><span class="n">EndsWith</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">process_rhs</span><span class="p">(</span><span class="n">qn</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="k">if</span> <span class="n">params</span> <span class="ow">and</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">bilateral_transforms</span><span class="p">:</span>
<span class="n">params</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"</span><span class="si">%%%s</span><span class="s2">"</span> <span class="o">%</span> <span class="n">connection</span><span class="o">.</span><span class="n">ops</span><span class="o">.</span><span class="n">prep_for_like_query</span><span class="p">(</span><span class="n">params</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
<span class="k">return</span> <span class="n">rhs</span><span class="p">,</span> <span class="n">params</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'endswith'</span><span class="p">]</span> <span class="o">=</span> <span class="n">EndsWith</span>
<span class="k">class</span> <span class="nc">IEndsWith</span><span class="p">(</span><span class="n">PatternLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'iendswith'</span>
<span class="k">def</span> <span class="nf">process_rhs</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">qn</span><span class="p">,</span> <span class="n">connection</span><span class="p">):</span>
<span class="n">rhs</span><span class="p">,</span> <span class="n">params</span> <span class="o">=</span> <span class="nb">super</span><span class="p">(</span><span class="n">IEndsWith</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">process_rhs</span><span class="p">(</span><span class="n">qn</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="k">if</span> <span class="n">params</span> <span class="ow">and</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">bilateral_transforms</span><span class="p">:</span>
<span class="n">params</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"</span><span class="si">%%%s</span><span class="s2">"</span> <span class="o">%</span> <span class="n">connection</span><span class="o">.</span><span class="n">ops</span><span class="o">.</span><span class="n">prep_for_like_query</span><span class="p">(</span><span class="n">params</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
<span class="k">return</span> <span class="n">rhs</span><span class="p">,</span> <span class="n">params</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'iendswith'</span><span class="p">]</span> <span class="o">=</span> <span class="n">IEndsWith</span>
<span class="k">class</span> <span class="nc">Between</span><span class="p">(</span><span class="n">BuiltinLookup</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">get_rhs_op</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">connection</span><span class="p">,</span> <span class="n">rhs</span><span class="p">):</span>
<span class="k">return</span> <span class="s2">"BETWEEN </span><span class="si">%s</span><span class="s2"> AND </span><span class="si">%s</span><span class="s2">"</span> <span class="o">%</span> <span class="p">(</span><span class="n">rhs</span><span class="p">,</span> <span class="n">rhs</span><span class="p">)</span>
<span class="k">class</span> <span class="nc">Year</span><span class="p">(</span><span class="n">Between</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'year'</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'year'</span><span class="p">]</span> <span class="o">=</span> <span class="n">Year</span>
<span class="k">class</span> <span class="nc">Range</span><span class="p">(</span><span class="n">BuiltinLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'range'</span>
<span class="k">def</span> <span class="nf">get_rhs_op</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">connection</span><span class="p">,</span> <span class="n">rhs</span><span class="p">):</span>
<span class="k">return</span> <span class="s2">"BETWEEN </span><span class="si">%s</span><span class="s2"> AND </span><span class="si">%s</span><span class="s2">"</span> <span class="o">%</span> <span class="p">(</span><span class="n">rhs</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">rhs</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span>
<span class="k">def</span> <span class="nf">process_rhs</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">rhs_is_direct_value</span><span class="p">():</span>
<span class="c1"># rhs should be an iterable of 2 values, we use batch_process_rhs</span>
<span class="c1"># to prepare/transform those values</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">batch_process_rhs</span><span class="p">(</span><span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="nb">super</span><span class="p">(</span><span class="n">Range</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">process_rhs</span><span class="p">(</span><span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'range'</span><span class="p">]</span> <span class="o">=</span> <span class="n">Range</span>
<span class="k">class</span> <span class="nc">DateLookup</span><span class="p">(</span><span class="n">BuiltinLookup</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">process_lhs</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">,</span> <span class="n">lhs</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="kn">from</span> <span class="nn">django.db.models</span> <span class="k">import</span> <span class="n">DateTimeField</span>
<span class="n">lhs</span><span class="p">,</span> <span class="n">params</span> <span class="o">=</span> <span class="nb">super</span><span class="p">(</span><span class="n">DateLookup</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">process_lhs</span><span class="p">(</span><span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">,</span> <span class="n">lhs</span><span class="p">)</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="o">.</span><span class="n">output_field</span><span class="p">,</span> <span class="n">DateTimeField</span><span class="p">):</span>
<span class="n">tzname</span> <span class="o">=</span> <span class="n">timezone</span><span class="o">.</span><span class="n">get_current_timezone_name</span><span class="p">()</span> <span class="k">if</span> <span class="n">settings</span><span class="o">.</span><span class="n">USE_TZ</span> <span class="k">else</span> <span class="kc">None</span>
<span class="n">sql</span><span class="p">,</span> <span class="n">tz_params</span> <span class="o">=</span> <span class="n">connection</span><span class="o">.</span><span class="n">ops</span><span class="o">.</span><span class="n">datetime_extract_sql</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">extract_type</span><span class="p">,</span> <span class="n">lhs</span><span class="p">,</span> <span class="n">tzname</span><span class="p">)</span>
<span class="k">return</span> <span class="n">connection</span><span class="o">.</span><span class="n">ops</span><span class="o">.</span><span class="n">lookup_cast</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">lookup_name</span><span class="p">)</span> <span class="o">%</span> <span class="n">sql</span><span class="p">,</span> <span class="n">tz_params</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="n">connection</span><span class="o">.</span><span class="n">ops</span><span class="o">.</span><span class="n">date_extract_sql</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">lookup_name</span><span class="p">,</span> <span class="n">lhs</span><span class="p">),</span> <span class="p">[]</span>
<span class="k">def</span> <span class="nf">get_rhs_op</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">connection</span><span class="p">,</span> <span class="n">rhs</span><span class="p">):</span>
<span class="k">return</span> <span class="s1">'= </span><span class="si">%s</span><span class="s1">'</span> <span class="o">%</span> <span class="n">rhs</span>
<span class="k">class</span> <span class="nc">Month</span><span class="p">(</span><span class="n">DateLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'month'</span>
<span class="n">extract_type</span> <span class="o">=</span> <span class="s1">'month'</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'month'</span><span class="p">]</span> <span class="o">=</span> <span class="n">Month</span>
<span class="k">class</span> <span class="nc">Day</span><span class="p">(</span><span class="n">DateLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'day'</span>
<span class="n">extract_type</span> <span class="o">=</span> <span class="s1">'day'</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'day'</span><span class="p">]</span> <span class="o">=</span> <span class="n">Day</span>
<span class="k">class</span> <span class="nc">WeekDay</span><span class="p">(</span><span class="n">DateLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'week_day'</span>
<span class="n">extract_type</span> <span class="o">=</span> <span class="s1">'week_day'</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'week_day'</span><span class="p">]</span> <span class="o">=</span> <span class="n">WeekDay</span>
<span class="k">class</span> <span class="nc">Hour</span><span class="p">(</span><span class="n">DateLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'hour'</span>
<span class="n">extract_type</span> <span class="o">=</span> <span class="s1">'hour'</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'hour'</span><span class="p">]</span> <span class="o">=</span> <span class="n">Hour</span>
<span class="k">class</span> <span class="nc">Minute</span><span class="p">(</span><span class="n">DateLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'minute'</span>
<span class="n">extract_type</span> <span class="o">=</span> <span class="s1">'minute'</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'minute'</span><span class="p">]</span> <span class="o">=</span> <span class="n">Minute</span>
<span class="k">class</span> <span class="nc">Second</span><span class="p">(</span><span class="n">DateLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'second'</span>
<span class="n">extract_type</span> <span class="o">=</span> <span class="s1">'second'</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'second'</span><span class="p">]</span> <span class="o">=</span> <span class="n">Second</span>
<span class="k">class</span> <span class="nc">IsNull</span><span class="p">(</span><span class="n">BuiltinLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'isnull'</span>
<span class="k">def</span> <span class="nf">as_sql</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">):</span>
<span class="n">sql</span><span class="p">,</span> <span class="n">params</span> <span class="o">=</span> <span class="n">compiler</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">lhs</span><span class="p">)</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">rhs</span><span class="p">:</span>
<span class="k">return</span> <span class="s2">"</span><span class="si">%s</span><span class="s2"> IS NULL"</span> <span class="o">%</span> <span class="n">sql</span><span class="p">,</span> <span class="n">params</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="s2">"</span><span class="si">%s</span><span class="s2"> IS NOT NULL"</span> <span class="o">%</span> <span class="n">sql</span><span class="p">,</span> <span class="n">params</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'isnull'</span><span class="p">]</span> <span class="o">=</span> <span class="n">IsNull</span>
<span class="k">class</span> <span class="nc">Search</span><span class="p">(</span><span class="n">BuiltinLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'search'</span>
<span class="k">def</span> <span class="nf">as_sql</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">):</span>
<span class="n">lhs</span><span class="p">,</span> <span class="n">lhs_params</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">process_lhs</span><span class="p">(</span><span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="n">rhs</span><span class="p">,</span> <span class="n">rhs_params</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">process_rhs</span><span class="p">(</span><span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="n">sql_template</span> <span class="o">=</span> <span class="n">connection</span><span class="o">.</span><span class="n">ops</span><span class="o">.</span><span class="n">fulltext_search_sql</span><span class="p">(</span><span class="n">field_name</span><span class="o">=</span><span class="n">lhs</span><span class="p">)</span>
<span class="k">return</span> <span class="n">sql_template</span><span class="p">,</span> <span class="n">lhs_params</span> <span class="o">+</span> <span class="n">rhs_params</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'search'</span><span class="p">]</span> <span class="o">=</span> <span class="n">Search</span>
<span class="k">class</span> <span class="nc">Regex</span><span class="p">(</span><span class="n">BuiltinLookup</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'regex'</span>
<span class="k">def</span> <span class="nf">as_sql</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">lookup_name</span> <span class="ow">in</span> <span class="n">connection</span><span class="o">.</span><span class="n">operators</span><span class="p">:</span>
<span class="k">return</span> <span class="nb">super</span><span class="p">(</span><span class="n">Regex</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">as_sql</span><span class="p">(</span><span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">lhs</span><span class="p">,</span> <span class="n">lhs_params</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">process_lhs</span><span class="p">(</span><span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="n">rhs</span><span class="p">,</span> <span class="n">rhs_params</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">process_rhs</span><span class="p">(</span><span class="n">compiler</span><span class="p">,</span> <span class="n">connection</span><span class="p">)</span>
<span class="n">sql_template</span> <span class="o">=</span> <span class="n">connection</span><span class="o">.</span><span class="n">ops</span><span class="o">.</span><span class="n">regex_lookup</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">lookup_name</span><span class="p">)</span>
<span class="k">return</span> <span class="n">sql_template</span> <span class="o">%</span> <span class="p">(</span><span class="n">lhs</span><span class="p">,</span> <span class="n">rhs</span><span class="p">),</span> <span class="n">lhs_params</span> <span class="o">+</span> <span class="n">rhs_params</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'regex'</span><span class="p">]</span> <span class="o">=</span> <span class="n">Regex</span>
<span class="k">class</span> <span class="nc">IRegex</span><span class="p">(</span><span class="n">Regex</span><span class="p">):</span>
<span class="n">lookup_name</span> <span class="o">=</span> <span class="s1">'iregex'</span>
<span class="n">default_lookups</span><span class="p">[</span><span class="s1">'iregex'</span><span class="p">]</span> <span class="o">=</span> <span class="n">IRegex</span>
</pre></div>
</div>
</div>
</div>
<div class="yui-b" id="sidebar">
<div class="sphinxsidebar" role="navigation" aria-label="main navigation">
<div class="sphinxsidebarwrapper">
<h3>Browse</h3>
<ul>
</ul>
<h3>You are here:</h3>
<ul>
<li>
<a href="../../../../index.html">Django 1.8.19 documentation</a>
<ul><li><a href="../../../index.html">Module code</a>
<ul><li><a href="../../../django.html">django</a>
<ul><li>django.db.models.lookups</li></ul>
</li></ul></li></ul>
</li>
</ul>
<div id="searchbox" style="display: none" role="search">
<h3>Quick search</h3>
<form class="search" action="../../../../search.html" method="get">
<div><input type="text" name="q" /></div>
<div><input type="submit" value="Go" /></div>
<input type="hidden" name="check_keywords" value="yes" />
<input type="hidden" name="area" value="default" />
</form>
</div>
<script type="text/javascript">$('#searchbox').show(0);</script>
</div>
</div>
<h3>Last update:</h3>
<p class="topless">Mar 10, 2018</p>
</div>
</div>
<div id="ft">
<div class="nav">
<a href="../../../index.html" title="Module code" accesskey="U">up</a></div>
</div>
</div>
<div class="clearer"></div>
</div>
</body>
</html>
distrib
>
Mageia
>
6
>
armv7hl
>
media
>
core-updates
>
by-pkgid
>
65530c6176058f9b54858c3b4f6385e6
>
files
>
103
