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<h1>ConstraintEvaluator.cc</h1> </div>
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<a href="ConstraintEvaluator_8cc.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// -*- mode: c++; c-basic-offset:4 -*-</span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003 <span class="comment">// This file is part of libdap, A C++ implementation of the OPeNDAP Data</span>
<a name="l00004"></a>00004 <span class="comment">// Access Protocol.</span>
<a name="l00005"></a>00005
<a name="l00006"></a>00006 <span class="comment">// Copyright (c) 2002,2003 OPeNDAP, Inc.</span>
<a name="l00007"></a>00007 <span class="comment">// Author: James Gallagher <jgallagher@opendap.org></span>
<a name="l00008"></a>00008 <span class="comment">//</span>
<a name="l00009"></a>00009 <span class="comment">// This library is free software; you can redistribute it and/or</span>
<a name="l00010"></a>00010 <span class="comment">// modify it under the terms of the GNU Lesser General Public</span>
<a name="l00011"></a>00011 <span class="comment">// License as published by the Free Software Foundation; either</span>
<a name="l00012"></a>00012 <span class="comment">// version 2.1 of the License, or (at your option) any later version.</span>
<a name="l00013"></a>00013 <span class="comment">//</span>
<a name="l00014"></a>00014 <span class="comment">// This library is distributed in the hope that it will be useful,</span>
<a name="l00015"></a>00015 <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00016"></a>00016 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00017"></a>00017 <span class="comment">// Lesser General Public License for more details.</span>
<a name="l00018"></a>00018 <span class="comment">//</span>
<a name="l00019"></a>00019 <span class="comment">// You should have received a copy of the GNU Lesser General Public</span>
<a name="l00020"></a>00020 <span class="comment">// License along with this library; if not, write to the Free Software</span>
<a name="l00021"></a>00021 <span class="comment">// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span>
<a name="l00022"></a>00022 <span class="comment">//</span>
<a name="l00023"></a>00023 <span class="comment">// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.</span>
<a name="l00024"></a>00024
<a name="l00025"></a>00025 <span class="preprocessor">#include "<a class="code" href="config_8h.html">config.h</a>"</span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="keyword">static</span> <span class="keywordtype">char</span> rcsid[] <a class="code" href="config_8h.html#a05e109ec893d0b12023d5b0cf4f718c4">not_used</a> =
<a name="l00028"></a>00028 {<span class="stringliteral">"$Id: ConstraintEvaluator.cc 23555 2010-09-14 16:43:59Z jimg $"</span>
<a name="l00029"></a>00029 };
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="preprocessor">#include "<a class="code" href="ConstraintEvaluator_8h.html">ConstraintEvaluator.h</a>"</span>
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="preprocessor">#include "<a class="code" href="ce__functions_8h.html">ce_functions.h</a>"</span>
<a name="l00034"></a>00034 <span class="preprocessor">#include "<a class="code" href="parser_8h.html">parser.h</a>"</span>
<a name="l00035"></a>00035 <span class="preprocessor">#include "<a class="code" href="ce__parser_8h.html">ce_parser.h</a>"</span>
<a name="l00036"></a>00036 <span class="preprocessor">#include "<a class="code" href="debug_8h.html">debug.h</a>"</span>
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="keyword">struct </span>yy_buffer_state;
<a name="l00039"></a>00039 yy_buffer_state *<a class="code" href="ConstraintEvaluator_8cc.html#a4a3f755a6cb4d32d04ab0198d051d4a7">ce_expr_scan_string</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *str);
<a name="l00040"></a>00040 <span class="keywordtype">int</span> <a class="code" href="ConstraintEvaluator_8cc.html#aba9ee772d54adb658f5dd2e1b71d3c2b">ce_exprparse</a>(<span class="keywordtype">void</span> *arg);
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="comment">// Glue routines declared in expr.lex</span>
<a name="l00043"></a>00043 <span class="keywordtype">void</span> <a class="code" href="ConstraintEvaluator_8cc.html#a955ba7cba10608969e986cd241a15155">ce_expr_switch_to_buffer</a>(<span class="keywordtype">void</span> *new_buffer);
<a name="l00044"></a>00044 <span class="keywordtype">void</span> <a class="code" href="ConstraintEvaluator_8cc.html#a829e836debe59adfa593dc370b8cb2d0">ce_expr_delete_buffer</a>(<span class="keywordtype">void</span> * buffer);
<a name="l00045"></a>00045 <span class="keywordtype">void</span> *<a class="code" href="ConstraintEvaluator_8cc.html#a7a3a151376fbd8a427288eab509bfd06">ce_expr_string</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *yy_str);
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="keyword">namespace </span>libdap {
<a name="l00048"></a>00048
<a name="l00049"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a61250e6c1cec9b2411a529c7fb4efd94">00049</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a61250e6c1cec9b2411a529c7fb4efd94">ConstraintEvaluator::ConstraintEvaluator</a>()
<a name="l00050"></a>00050 {
<a name="l00051"></a>00051 <a class="code" href="namespacelibdap.html#a5eeabecdc04289ca1ed78d333f29129d">register_functions</a>(*<span class="keyword">this</span>);
<a name="l00052"></a>00052 }
<a name="l00053"></a>00053
<a name="l00054"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#ae46662e1cbe013a6f6ad65d2e0c24186">00054</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#ae46662e1cbe013a6f6ad65d2e0c24186">ConstraintEvaluator::~ConstraintEvaluator</a>()
<a name="l00055"></a>00055 {
<a name="l00056"></a>00056 <span class="comment">// delete all the constants created by the parser for CE evaluation</span>
<a name="l00057"></a>00057 <span class="keywordflow">for</span> (<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a1c38b776ba27bc78a1e484a45bbe8747">Constants_iter</a> j = constants.begin(); j != constants.end(); j++) {
<a name="l00058"></a>00058 <a class="code" href="classlibdap_1_1BaseType.html" title="The basic data type for the DODS DAP types.">BaseType</a> *btp = *j ;
<a name="l00059"></a>00059 <span class="keyword">delete</span> btp ; btp = 0;
<a name="l00060"></a>00060 }
<a name="l00061"></a>00061
<a name="l00062"></a>00062 <span class="keywordflow">for</span> (<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a369a03eac7969bb6955cfc90ababb8aa">Clause_iter</a> k = expr.begin(); k != expr.end(); k++) {
<a name="l00063"></a>00063 <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a> *cp = *k ;
<a name="l00064"></a>00064 <span class="keyword">delete</span> cp ; cp = 0;
<a name="l00065"></a>00065 }
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067
<a name="l00069"></a>00069 <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a369a03eac7969bb6955cfc90ababb8aa">ConstraintEvaluator::Clause_iter</a>
<a name="l00070"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a81135cc86f8bef397b59577dfa224f62">00070</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a81135cc86f8bef397b59577dfa224f62">ConstraintEvaluator::clause_begin</a>()
<a name="l00071"></a>00071 {
<a name="l00072"></a>00072 <span class="keywordflow">return</span> expr.begin() ;
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074
<a name="l00077"></a>00077 <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a369a03eac7969bb6955cfc90ababb8aa">ConstraintEvaluator::Clause_iter</a>
<a name="l00078"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#ad193b3ca4cef59d2b46c04ab08f4675f">00078</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#ad193b3ca4cef59d2b46c04ab08f4675f">ConstraintEvaluator::clause_end</a>()
<a name="l00079"></a>00079 {
<a name="l00080"></a>00080 <span class="keywordflow">return</span> expr.end() ;
<a name="l00081"></a>00081 }
<a name="l00082"></a>00082
<a name="l00085"></a>00085 <span class="keywordtype">bool</span>
<a name="l00086"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a5c53cfac881da05b7ed6eb6404b0c4f9">00086</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a5c53cfac881da05b7ed6eb6404b0c4f9">ConstraintEvaluator::clause_value</a>(<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a369a03eac7969bb6955cfc90ababb8aa">Clause_iter</a> &iter, <a class="code" href="classlibdap_1_1DDS.html">DDS</a> &dds<span class="comment">/*, const string &***/</span>)
<a name="l00087"></a>00087 {
<a name="l00088"></a>00088 <span class="keywordflow">if</span> (expr.empty())
<a name="l00089"></a>00089 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1InternalErr.html" title="A class for software fault reporting.">InternalErr</a>(__FILE__, __LINE__,
<a name="l00090"></a>00090 <span class="stringliteral">"There are no CE clauses for *this* DDS object."</span>);
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <span class="keywordflow">return</span> (*iter)->value(dds);
<a name="l00093"></a>00093 }
<a name="l00094"></a>00094
<a name="l00107"></a>00107 <span class="keywordtype">void</span>
<a name="l00108"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a796b573bb1ec8bbce8c22c4caf58af2e">00108</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a796b573bb1ec8bbce8c22c4caf58af2e" title="Add a clause to a constraint expression.">ConstraintEvaluator::append_clause</a>(<span class="keywordtype">int</span> op, <a class="code" href="classlibdap_1_1rvalue.html">rvalue</a> *arg1, <a class="code" href="namespacelibdap.html#a443d3b7d9ceaa4ec25e5bfcc555ce056">rvalue_list</a> *arg2)
<a name="l00109"></a>00109 {
<a name="l00110"></a>00110 <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a> *clause = <span class="keyword">new</span> <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a>(op, arg1, arg2);
<a name="l00111"></a>00111
<a name="l00112"></a>00112 expr.push_back(clause);
<a name="l00113"></a>00113 }
<a name="l00114"></a>00114
<a name="l00124"></a>00124 <span class="keywordtype">void</span>
<a name="l00125"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a2439b21977caf80d57c5faa0342dfcb4">00125</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a796b573bb1ec8bbce8c22c4caf58af2e" title="Add a clause to a constraint expression.">ConstraintEvaluator::append_clause</a>(bool_func func, <a class="code" href="namespacelibdap.html#a443d3b7d9ceaa4ec25e5bfcc555ce056">rvalue_list</a> *args)
<a name="l00126"></a>00126 {
<a name="l00127"></a>00127 <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a> *clause = <span class="keyword">new</span> <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a>(func, args);
<a name="l00128"></a>00128
<a name="l00129"></a>00129 expr.push_back(clause);
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131
<a name="l00141"></a>00141 <span class="keywordtype">void</span>
<a name="l00142"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#af4769219d99fe7ec3f4f4d7b1cd560dc">00142</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a796b573bb1ec8bbce8c22c4caf58af2e" title="Add a clause to a constraint expression.">ConstraintEvaluator::append_clause</a>(btp_func func, <a class="code" href="namespacelibdap.html#a443d3b7d9ceaa4ec25e5bfcc555ce056">rvalue_list</a> *args)
<a name="l00143"></a>00143 {
<a name="l00144"></a>00144 <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a> *clause = <span class="keyword">new</span> <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a>(func, args);
<a name="l00145"></a>00145
<a name="l00146"></a>00146 expr.push_back(clause);
<a name="l00147"></a>00147 }
<a name="l00148"></a>00148
<a name="l00156"></a>00156 <span class="keywordtype">void</span>
<a name="l00157"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#abf7511f38a4c5f8fc0cde0eca91ef338">00157</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#abf7511f38a4c5f8fc0cde0eca91ef338">ConstraintEvaluator::append_constant</a>(<a class="code" href="classlibdap_1_1BaseType.html" title="The basic data type for the DODS DAP types.">BaseType</a> *btp)
<a name="l00158"></a>00158 {
<a name="l00159"></a>00159 constants.push_back(btp);
<a name="l00160"></a>00160 }
<a name="l00161"></a>00161
<a name="l00162"></a>00162 <span class="keyword">class </span>func_name_is
<a name="l00163"></a>00163 {
<a name="l00164"></a>00164 <span class="keyword">private</span>:
<a name="l00165"></a>00165 <span class="keyword">const</span> <span class="keywordtype">string</span> d_name;
<a name="l00166"></a>00166
<a name="l00167"></a>00167 <span class="keyword">public</span>:
<a name="l00168"></a>00168 func_name_is(<span class="keyword">const</span> <span class="keywordtype">string</span> &name): d_name(name)
<a name="l00169"></a>00169 {}
<a name="l00170"></a>00170 <span class="keywordtype">bool</span> operator()(<span class="keyword">const</span> ConstraintEvaluator::function f)
<a name="l00171"></a>00171 {
<a name="l00172"></a>00172 <span class="keywordflow">return</span> f.name == d_name;
<a name="l00173"></a>00173 }
<a name="l00174"></a>00174 };
<a name="l00175"></a>00175
<a name="l00196"></a>00196 <span class="keywordtype">void</span>
<a name="l00197"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#ac42a51af20507806f1e04e24ed9cb0ac">00197</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#ac42a51af20507806f1e04e24ed9cb0ac" title="Add a boolean function to the list.">ConstraintEvaluator::add_function</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &name, bool_func f)
<a name="l00198"></a>00198 {
<a name="l00199"></a>00199 functions.remove_if(<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#abdcdfafb252f26c4af32af89b0f699dc">func_name_is</a>(name));
<a name="l00200"></a>00200 function func(name, f);
<a name="l00201"></a>00201 functions.push_back(func);
<a name="l00202"></a>00202 }
<a name="l00203"></a>00203
<a name="l00205"></a>00205 <span class="keywordtype">void</span>
<a name="l00206"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#aeabb00757399afe777712b43dfdefd27">00206</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#ac42a51af20507806f1e04e24ed9cb0ac" title="Add a boolean function to the list.">ConstraintEvaluator::add_function</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &name, btp_func f)
<a name="l00207"></a>00207 {
<a name="l00208"></a>00208 functions.remove_if(<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#abdcdfafb252f26c4af32af89b0f699dc">func_name_is</a>(name));
<a name="l00209"></a>00209 function func(name, f);
<a name="l00210"></a>00210 functions.push_back(func);
<a name="l00211"></a>00211 }
<a name="l00212"></a>00212
<a name="l00214"></a>00214 <span class="keywordtype">void</span>
<a name="l00215"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a029d3512841dcdb09b46024ff40e8e4e">00215</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#ac42a51af20507806f1e04e24ed9cb0ac" title="Add a boolean function to the list.">ConstraintEvaluator::add_function</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &name, proj_func f)
<a name="l00216"></a>00216 {
<a name="l00217"></a>00217 functions.remove_if(<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#abdcdfafb252f26c4af32af89b0f699dc">func_name_is</a>(name));
<a name="l00218"></a>00218 function func(name, f);
<a name="l00219"></a>00219 functions.push_back(func);
<a name="l00220"></a>00220 }
<a name="l00221"></a>00221
<a name="l00223"></a>00223 <span class="keywordtype">bool</span>
<a name="l00224"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#ac8da439f904b56b42bab23e6d6483a5d">00224</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#ac8da439f904b56b42bab23e6d6483a5d" title="Find a Boolean function with a given name in the function list.">ConstraintEvaluator::find_function</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &name, bool_func *f)<span class="keyword"> const</span>
<a name="l00225"></a>00225 <span class="keyword"></span>{
<a name="l00226"></a>00226 <span class="keywordflow">if</span> (functions.empty())
<a name="l00227"></a>00227 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00228"></a>00228
<a name="l00229"></a>00229 <span class="keywordflow">for</span> (<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#afabff19845fae4d5ccfcc492b33c79c2">Functions_citer</a> i = functions.begin(); i != functions.end(); i++) {
<a name="l00230"></a>00230 <span class="keywordflow">if</span> (name == (*i).name && (*f = (*i).b_func)) {
<a name="l00231"></a>00231 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00232"></a>00232 }
<a name="l00233"></a>00233 }
<a name="l00234"></a>00234
<a name="l00235"></a>00235 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00236"></a>00236 }
<a name="l00237"></a>00237
<a name="l00239"></a>00239 <span class="keywordtype">bool</span>
<a name="l00240"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a065950f0bc91ea2ae3ed06f6cd23e1f9">00240</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#ac8da439f904b56b42bab23e6d6483a5d" title="Find a Boolean function with a given name in the function list.">ConstraintEvaluator::find_function</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &name, btp_func *f)<span class="keyword"> const</span>
<a name="l00241"></a>00241 <span class="keyword"></span>{
<a name="l00242"></a>00242 <span class="keywordflow">if</span> (functions.empty())
<a name="l00243"></a>00243 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00244"></a>00244
<a name="l00245"></a>00245 <span class="keywordflow">for</span> (<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#afabff19845fae4d5ccfcc492b33c79c2">Functions_citer</a> i = functions.begin(); i != functions.end(); i++) {
<a name="l00246"></a>00246 <span class="keywordflow">if</span> (name == (*i).name && (*f = (*i).bt_func)) {
<a name="l00247"></a>00247 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00248"></a>00248 }
<a name="l00249"></a>00249 }
<a name="l00250"></a>00250
<a name="l00251"></a>00251 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00252"></a>00252 }
<a name="l00253"></a>00253
<a name="l00255"></a>00255 <span class="keywordtype">bool</span>
<a name="l00256"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a1f59dced0a1aa7d31f5c46169188a8c3">00256</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#ac8da439f904b56b42bab23e6d6483a5d" title="Find a Boolean function with a given name in the function list.">ConstraintEvaluator::find_function</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &name, proj_func *f)<span class="keyword"> const</span>
<a name="l00257"></a>00257 <span class="keyword"></span>{
<a name="l00258"></a>00258 <span class="keywordflow">if</span> (functions.empty())
<a name="l00259"></a>00259 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00260"></a>00260
<a name="l00261"></a>00261 <span class="keywordflow">for</span> (<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#afabff19845fae4d5ccfcc492b33c79c2">Functions_citer</a> i = functions.begin(); i != functions.end(); i++)
<a name="l00262"></a>00262 <span class="keywordflow">if</span> (name == (*i).name && (*f = (*i).p_func)) {
<a name="l00263"></a>00263 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00264"></a>00264 }
<a name="l00265"></a>00265
<a name="l00266"></a>00266 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00267"></a>00267 }
<a name="l00269"></a>00269
<a name="l00276"></a>00276 <span class="keywordtype">bool</span>
<a name="l00277"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#add46ce1d9ef36fa26a2913d8d7c51096">00277</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#add46ce1d9ef36fa26a2913d8d7c51096" title="Does the current constraint expression return a BaseType pointer? This method does not evaluate the c...">ConstraintEvaluator::functional_expression</a>()
<a name="l00278"></a>00278 {
<a name="l00279"></a>00279 <span class="keywordflow">if</span> (expr.empty())
<a name="l00280"></a>00280 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00281"></a>00281
<a name="l00282"></a>00282 <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a> *cp = expr[0] ;
<a name="l00283"></a>00283 <span class="keywordflow">return</span> cp-><a class="code" href="structlibdap_1_1Clause.html#a7bd5122be1851f0bf32ec1c58b46eaa9" title="Return true if the clause returns a value in a BaseType pointer.">value_clause</a>();
<a name="l00284"></a>00284 }
<a name="l00285"></a>00285
<a name="l00287"></a>00287 <a class="code" href="classlibdap_1_1BaseType.html" title="The basic data type for the DODS DAP types.">BaseType</a> *
<a name="l00288"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a3d433bb6769cc95fb299249b5e5d74c4">00288</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a3d433bb6769cc95fb299249b5e5d74c4" title="Evaluate a function-valued constraint expression.">ConstraintEvaluator::eval_function</a>(<a class="code" href="classlibdap_1_1DDS.html">DDS</a> &dds, <span class="keyword">const</span> <span class="keywordtype">string</span> &)
<a name="l00289"></a>00289 {
<a name="l00290"></a>00290 <span class="keywordflow">if</span> (expr.size() != 1)
<a name="l00291"></a>00291 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1InternalErr.html" title="A class for software fault reporting.">InternalErr</a>(__FILE__, __LINE__,
<a name="l00292"></a>00292 <span class="stringliteral">"The length of the list of CE clauses is not 1."</span>);
<a name="l00293"></a>00293
<a name="l00294"></a>00294 <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a> *cp = expr[0] ;
<a name="l00295"></a>00295 <a class="code" href="classlibdap_1_1BaseType.html" title="The basic data type for the DODS DAP types.">BaseType</a> *result;
<a name="l00296"></a>00296 <span class="keywordflow">if</span> (cp-><a class="code" href="structlibdap_1_1Clause.html#abfff44c4db49ad7462d14665b2458588" title="Evaluate a clause which returns a boolean value This method must only be evaluated for clauses with r...">value</a>(dds, &result))
<a name="l00297"></a>00297 <span class="keywordflow">return</span> result;
<a name="l00298"></a>00298 <span class="keywordflow">else</span>
<a name="l00299"></a>00299 <span class="keywordflow">return</span> NULL;
<a name="l00300"></a>00300 }
<a name="l00301"></a>00301
<a name="l00311"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a9985c6a30247ced32a4b6e764deebf45">00311</a> <span class="keywordtype">bool</span> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a9985c6a30247ced32a4b6e764deebf45" title="Does the current constraint expression return a DDS pointer?">ConstraintEvaluator::function_clauses</a>()
<a name="l00312"></a>00312 {
<a name="l00313"></a>00313 <span class="keywordflow">if</span> (expr.empty())
<a name="l00314"></a>00314 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00315"></a>00315
<a name="l00316"></a>00316 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < expr.size(); ++i) {
<a name="l00317"></a>00317 <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a> *cp = expr[i];
<a name="l00318"></a>00318 <span class="keywordflow">if</span> (!cp-><a class="code" href="structlibdap_1_1Clause.html#a7bd5122be1851f0bf32ec1c58b46eaa9" title="Return true if the clause returns a value in a BaseType pointer.">value_clause</a>())
<a name="l00319"></a>00319 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00320"></a>00320 }
<a name="l00321"></a>00321
<a name="l00322"></a>00322 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00323"></a>00323 }
<a name="l00324"></a>00324
<a name="l00340"></a>00340 <a class="code" href="classlibdap_1_1DDS.html">DDS</a> *
<a name="l00341"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#ab0dba1657e9aadd85b3ce713c6a4036a">00341</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#ab0dba1657e9aadd85b3ce713c6a4036a" title="Evaluate a function-valued constraint expression that contains several function calls.">ConstraintEvaluator::eval_function_clauses</a>(<a class="code" href="classlibdap_1_1DDS.html">DDS</a> &dds)
<a name="l00342"></a>00342 {
<a name="l00343"></a>00343 <span class="keywordflow">if</span> (expr.empty())
<a name="l00344"></a>00344 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1InternalErr.html" title="A class for software fault reporting.">InternalErr</a>(__FILE__, __LINE__, <span class="stringliteral">"The constraint expression is empty."</span>);
<a name="l00345"></a>00345
<a name="l00346"></a>00346 <a class="code" href="classlibdap_1_1DDS.html">DDS</a> *fdds = <span class="keyword">new</span> <a class="code" href="classlibdap_1_1DDS.html">DDS</a>(dds.<a class="code" href="classlibdap_1_1DDS.html#aa75678c230c20aaf7626f954de04644f">get_factory</a>(), <span class="stringliteral">"function_result_"</span> + dds.<a class="code" href="classlibdap_1_1DDS.html#ac83ef5e2bc4e75da5a21ead478aeff0c">get_dataset_name</a>());
<a name="l00347"></a>00347 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < expr.size(); ++i) {
<a name="l00348"></a>00348 <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a> *cp = expr[i];
<a name="l00349"></a>00349 <a class="code" href="classlibdap_1_1BaseType.html" title="The basic data type for the DODS DAP types.">BaseType</a> *result;
<a name="l00350"></a>00350 <span class="keywordflow">if</span> (cp-><a class="code" href="structlibdap_1_1Clause.html#abfff44c4db49ad7462d14665b2458588" title="Evaluate a clause which returns a boolean value This method must only be evaluated for clauses with r...">value</a>(dds, &result)) {
<a name="l00351"></a>00351 result-><a class="code" href="classlibdap_1_1BaseType.html#aba7b27635c95b74536de18393133628e">set_send_p</a>(<span class="keyword">true</span>);
<a name="l00352"></a>00352 fdds-><a class="code" href="classlibdap_1_1DDS.html#ade87418e97ee5c7efd92279cd41e421c" title="Adds a copy of the variable to the DDS. Using the ptr_duplicate() method, perform a deep copy on the ...">add_var</a>(result);
<a name="l00353"></a>00353 }
<a name="l00354"></a>00354 <span class="keywordflow">else</span>
<a name="l00355"></a>00355 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a>(<span class="stringliteral">"A function was called but failed to return a value."</span>);
<a name="l00356"></a>00356 }
<a name="l00357"></a>00357
<a name="l00358"></a>00358 <span class="keywordflow">return</span> fdds;
<a name="l00359"></a>00359 }
<a name="l00360"></a>00360
<a name="l00366"></a>00366 <a class="code" href="classlibdap_1_1DataDDS.html" title="Holds a DAP2 DDS.">DataDDS</a> *
<a name="l00367"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a0e36171a34caa85d21e18adbd83a831b">00367</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#ab0dba1657e9aadd85b3ce713c6a4036a" title="Evaluate a function-valued constraint expression that contains several function calls.">ConstraintEvaluator::eval_function_clauses</a>(<a class="code" href="classlibdap_1_1DataDDS.html" title="Holds a DAP2 DDS.">DataDDS</a> &dds)
<a name="l00368"></a>00368 {
<a name="l00369"></a>00369 <span class="keywordflow">if</span> (expr.empty())
<a name="l00370"></a>00370 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1InternalErr.html" title="A class for software fault reporting.">InternalErr</a>(__FILE__, __LINE__, <span class="stringliteral">"The constraint expression is empty."</span>);
<a name="l00371"></a>00371
<a name="l00372"></a>00372 <a class="code" href="classlibdap_1_1DataDDS.html" title="Holds a DAP2 DDS.">DataDDS</a> *fdds = <span class="keyword">new</span> <a class="code" href="classlibdap_1_1DataDDS.html" title="Holds a DAP2 DDS.">DataDDS</a>(dds.<a class="code" href="classlibdap_1_1DDS.html#aa75678c230c20aaf7626f954de04644f">get_factory</a>(),
<a name="l00373"></a>00373 <span class="stringliteral">"function_result_"</span> + dds.<a class="code" href="classlibdap_1_1DDS.html#ac83ef5e2bc4e75da5a21ead478aeff0c">get_dataset_name</a>(),
<a name="l00374"></a>00374 dds.<a class="code" href="classlibdap_1_1DataDDS.html#ab6769571c1bfd8700df805366549f6cf" title="Get the server version string, unparsed.">get_version</a>(), dds.<a class="code" href="classlibdap_1_1DataDDS.html#af43fc4392606e00c25ad9d8af7fc2a8f">get_protocol</a>());
<a name="l00375"></a>00375
<a name="l00376"></a>00376 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < expr.size(); ++i) {
<a name="l00377"></a>00377 <a class="code" href="structlibdap_1_1Clause.html" title="Holds a fragment of a constraint expression.">Clause</a> *cp = expr[i];
<a name="l00378"></a>00378 <a class="code" href="classlibdap_1_1BaseType.html" title="The basic data type for the DODS DAP types.">BaseType</a> *result;
<a name="l00379"></a>00379 <span class="keywordflow">if</span> (cp-><a class="code" href="structlibdap_1_1Clause.html#abfff44c4db49ad7462d14665b2458588" title="Evaluate a clause which returns a boolean value This method must only be evaluated for clauses with r...">value</a>(dds, &result)) {
<a name="l00380"></a>00380 result-><a class="code" href="classlibdap_1_1BaseType.html#aba7b27635c95b74536de18393133628e">set_send_p</a>(<span class="keyword">true</span>);
<a name="l00381"></a>00381 fdds-><a class="code" href="classlibdap_1_1DDS.html#ade87418e97ee5c7efd92279cd41e421c" title="Adds a copy of the variable to the DDS. Using the ptr_duplicate() method, perform a deep copy on the ...">add_var</a>(result);
<a name="l00382"></a>00382 }
<a name="l00383"></a>00383 <span class="keywordflow">else</span>
<a name="l00384"></a>00384 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1Error.html" title="A class for error processing.">Error</a>(<span class="stringliteral">"A function was called but failed to return a value."</span>);
<a name="l00385"></a>00385 }
<a name="l00386"></a>00386
<a name="l00387"></a>00387 <span class="keywordflow">return</span> fdds;
<a name="l00388"></a>00388 }
<a name="l00389"></a>00389
<a name="l00391"></a>00391 <span class="keywordtype">bool</span>
<a name="l00392"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a155da913af4458d96fa60ecd0ecbe377">00392</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a155da913af4458d96fa60ecd0ecbe377" title="Does the current constraint expression return a boolean value?">ConstraintEvaluator::boolean_expression</a>()
<a name="l00393"></a>00393 {
<a name="l00394"></a>00394 <span class="keywordflow">if</span> (expr.empty())
<a name="l00395"></a>00395 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00396"></a>00396
<a name="l00397"></a>00397 <span class="keywordtype">bool</span> <span class="keywordtype">boolean</span> = <span class="keyword">true</span>;
<a name="l00398"></a>00398 <span class="keywordflow">for</span> (<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a369a03eac7969bb6955cfc90ababb8aa">Clause_iter</a> i = expr.begin(); i != expr.end(); i++) {
<a name="l00399"></a>00399 <span class="keywordtype">boolean</span> = <span class="keywordtype">boolean</span> && (*i)->boolean_clause();
<a name="l00400"></a>00400 }
<a name="l00401"></a>00401
<a name="l00402"></a>00402 <span class="keywordflow">return</span> boolean;
<a name="l00403"></a>00403 }
<a name="l00404"></a>00404
<a name="l00405"></a>00405
<a name="l00413"></a>00413 <span class="keywordtype">bool</span>
<a name="l00414"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#aa0066a57cf00c975f6ccbc2e90c64742">00414</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#aa0066a57cf00c975f6ccbc2e90c64742" title="Evaluate a boolean-valued constraint expression. This is main method for the evaluator ans is called ...">ConstraintEvaluator::eval_selection</a>(<a class="code" href="classlibdap_1_1DDS.html">DDS</a> &dds, <span class="keyword">const</span> <span class="keywordtype">string</span> &)
<a name="l00415"></a>00415 {
<a name="l00416"></a>00416 <span class="keywordflow">if</span> (expr.empty()) {
<a name="l00417"></a>00417 <a class="code" href="debug_8h.html#a32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr << <span class="stringliteral">"No selection recorded"</span> << endl);
<a name="l00418"></a>00418 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00419"></a>00419 }
<a name="l00420"></a>00420
<a name="l00421"></a>00421 <a class="code" href="debug_8h.html#a32adf79142f0a426b5e782fb7cd4cad3">DBG</a>(cerr << <span class="stringliteral">"Eval selection"</span> << endl);
<a name="l00422"></a>00422
<a name="l00423"></a>00423 <span class="comment">// A CE is made up of zero or more clauses, each of which has a boolean</span>
<a name="l00424"></a>00424 <span class="comment">// value. The value of the CE is the logical AND of the clause</span>
<a name="l00425"></a>00425 <span class="comment">// values. See ConstraintEvaluator::clause::value(...) for information on logical ORs in</span>
<a name="l00426"></a>00426 <span class="comment">// CEs.</span>
<a name="l00427"></a>00427 <span class="keywordtype">bool</span> result = <span class="keyword">true</span>;
<a name="l00428"></a>00428 <span class="keywordflow">for</span> (<a class="code" href="classlibdap_1_1ConstraintEvaluator.html#a369a03eac7969bb6955cfc90ababb8aa">Clause_iter</a> i = expr.begin(); i != expr.end() && result; i++) {
<a name="l00429"></a>00429 <span class="comment">// A selection expression *must* contain only boolean clauses!</span>
<a name="l00430"></a>00430 <span class="keywordflow">if</span> (!((*i)->boolean_clause()))
<a name="l00431"></a>00431 <span class="keywordflow">throw</span> <a class="code" href="classlibdap_1_1InternalErr.html" title="A class for software fault reporting.">InternalErr</a>(__FILE__, __LINE__,
<a name="l00432"></a>00432 <span class="stringliteral">"A selection expression must contain only boolean clauses."</span>);
<a name="l00433"></a>00433 result = result && (*i)->value(dds);
<a name="l00434"></a>00434 }
<a name="l00435"></a>00435
<a name="l00436"></a>00436 <span class="keywordflow">return</span> result;
<a name="l00437"></a>00437 }
<a name="l00438"></a>00438
<a name="l00449"></a>00449 <span class="keywordtype">void</span>
<a name="l00450"></a><a class="code" href="classlibdap_1_1ConstraintEvaluator.html#aaeb4a7662178b992d9e36ff1dc0fc2bc">00450</a> <a class="code" href="classlibdap_1_1ConstraintEvaluator.html#aaeb4a7662178b992d9e36ff1dc0fc2bc" title="Parse the constraint expression given the current DDS.">ConstraintEvaluator::parse_constraint</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> &constraint, <a class="code" href="classlibdap_1_1DDS.html">DDS</a> &dds)
<a name="l00451"></a>00451 {
<a name="l00452"></a>00452 <span class="keywordtype">void</span> *buffer = <a class="code" href="ConstraintEvaluator_8cc.html#a7a3a151376fbd8a427288eab509bfd06">ce_expr_string</a>(constraint.c_str());
<a name="l00453"></a>00453 <a class="code" href="ConstraintEvaluator_8cc.html#a955ba7cba10608969e986cd241a15155">ce_expr_switch_to_buffer</a>(buffer);
<a name="l00454"></a>00454
<a name="l00455"></a>00455 <a class="code" href="structlibdap_1_1ce__parser__arg.html">ce_parser_arg</a> arg(<span class="keyword">this</span>, &dds);
<a name="l00456"></a>00456
<a name="l00457"></a>00457 <span class="comment">// For all errors, exprparse will throw Error.</span>
<a name="l00458"></a>00458 <a class="code" href="ConstraintEvaluator_8cc.html#aba9ee772d54adb658f5dd2e1b71d3c2b">ce_exprparse</a>((<span class="keywordtype">void</span> *)&arg);
<a name="l00459"></a>00459
<a name="l00460"></a>00460 <a class="code" href="ConstraintEvaluator_8cc.html#a829e836debe59adfa593dc370b8cb2d0">ce_expr_delete_buffer</a>(buffer);
<a name="l00461"></a>00461 }
<a name="l00462"></a>00462
<a name="l00463"></a>00463 } <span class="comment">// namespace libdap</span>
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