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<h1>Source code for sqlobject.inheritance.tests.test_deep_inheritance</h1><div class="highlight"><pre>
<span></span><span class="kn">from</span> <span class="nn">pytest</span> <span class="k">import</span> <span class="n">raises</span><span class="p">,</span> <span class="n">skip</span>
<span class="kn">from</span> <span class="nn">sqlobject</span> <span class="k">import</span> <span class="n">ForeignKey</span><span class="p">,</span> <span class="n">MultipleJoin</span><span class="p">,</span> <span class="n">StringCol</span>
<span class="kn">from</span> <span class="nn">sqlobject.inheritance</span> <span class="k">import</span> <span class="n">InheritableSQLObject</span>
<span class="kn">from</span> <span class="nn">sqlobject.tests.dbtest</span> <span class="k">import</span> <span class="n">getConnection</span><span class="p">,</span> <span class="n">setupClass</span><span class="p">,</span> <span class="n">supports</span>
<span class="c1">########################################</span>
<span class="c1"># Deep Inheritance</span>
<span class="c1">########################################</span>
<div class="viewcode-block" id="DIPerson"><a class="viewcode-back" href="../../../../api/sqlobject.inheritance.tests.test_deep_inheritance.html#sqlobject.inheritance.tests.test_deep_inheritance.DIPerson">[docs]</a><span class="k">class</span> <span class="nc">DIPerson</span><span class="p">(</span><span class="n">InheritableSQLObject</span><span class="p">):</span>
<span class="n">firstName</span> <span class="o">=</span> <span class="n">StringCol</span><span class="p">(</span><span class="n">length</span><span class="o">=</span><span class="mi">100</span><span class="p">)</span>
<span class="n">lastName</span> <span class="o">=</span> <span class="n">StringCol</span><span class="p">(</span><span class="n">alternateID</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">length</span><span class="o">=</span><span class="mi">255</span><span class="p">)</span>
<span class="n">manager</span> <span class="o">=</span> <span class="n">ForeignKey</span><span class="p">(</span><span class="s2">"DIManager"</span><span class="p">,</span> <span class="n">default</span><span class="o">=</span><span class="kc">None</span><span class="p">)</span>
</div>
<div class="viewcode-block" id="DIEmployee"><a class="viewcode-back" href="../../../../api/sqlobject.inheritance.tests.test_deep_inheritance.html#sqlobject.inheritance.tests.test_deep_inheritance.DIEmployee">[docs]</a><span class="k">class</span> <span class="nc">DIEmployee</span><span class="p">(</span><span class="n">DIPerson</span><span class="p">):</span>
<span class="n">so_position</span> <span class="o">=</span> <span class="n">StringCol</span><span class="p">(</span><span class="n">unique</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">length</span><span class="o">=</span><span class="mi">100</span><span class="p">)</span>
</div>
<div class="viewcode-block" id="DIManager"><a class="viewcode-back" href="../../../../api/sqlobject.inheritance.tests.test_deep_inheritance.html#sqlobject.inheritance.tests.test_deep_inheritance.DIManager">[docs]</a><span class="k">class</span> <span class="nc">DIManager</span><span class="p">(</span><span class="n">DIEmployee</span><span class="p">):</span>
<span class="n">subdudes</span> <span class="o">=</span> <span class="n">MultipleJoin</span><span class="p">(</span><span class="s2">"DIPerson"</span><span class="p">,</span> <span class="n">joinColumn</span><span class="o">=</span><span class="s2">"manager_id"</span><span class="p">)</span>
</div>
<div class="viewcode-block" id="test_creation_fail"><a class="viewcode-back" href="../../../../api/sqlobject.inheritance.tests.test_deep_inheritance.html#sqlobject.inheritance.tests.test_deep_inheritance.test_creation_fail">[docs]</a><span class="k">def</span> <span class="nf">test_creation_fail</span><span class="p">():</span>
<span class="sd">"""</span>
<span class="sd"> Try to create a Manager without specifying a position.</span>
<span class="sd"> This should fail without leaving any partial records in</span>
<span class="sd"> the database.</span>
<span class="sd"> """</span>
<span class="n">setupClass</span><span class="p">([</span><span class="n">DIManager</span><span class="p">,</span> <span class="n">DIEmployee</span><span class="p">,</span> <span class="n">DIPerson</span><span class="p">])</span>
<span class="n">kwargs</span> <span class="o">=</span> <span class="p">{</span><span class="s1">'firstName'</span><span class="p">:</span> <span class="s1">'John'</span><span class="p">,</span> <span class="s1">'lastname'</span><span class="p">:</span> <span class="s1">'Doe'</span><span class="p">}</span>
<span class="n">raises</span><span class="p">(</span><span class="ne">TypeError</span><span class="p">,</span> <span class="n">DIManager</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
<span class="n">persons</span> <span class="o">=</span> <span class="n">DIEmployee</span><span class="o">.</span><span class="n">select</span><span class="p">(</span><span class="n">DIPerson</span><span class="o">.</span><span class="n">q</span><span class="o">.</span><span class="n">firstName</span> <span class="o">==</span> <span class="s1">'John'</span><span class="p">)</span>
<span class="k">assert</span> <span class="n">persons</span><span class="o">.</span><span class="n">count</span><span class="p">()</span> <span class="o">==</span> <span class="mi">0</span>
</div>
<div class="viewcode-block" id="test_creation_fail2"><a class="viewcode-back" href="../../../../api/sqlobject.inheritance.tests.test_deep_inheritance.html#sqlobject.inheritance.tests.test_deep_inheritance.test_creation_fail2">[docs]</a><span class="k">def</span> <span class="nf">test_creation_fail2</span><span class="p">():</span>
<span class="sd">"""</span>
<span class="sd"> Try to create two Managers with the same position.</span>
<span class="sd"> This should fail without leaving any partial records in</span>
<span class="sd"> the database.</span>
<span class="sd"> """</span>
<span class="n">setupClass</span><span class="p">([</span><span class="n">DIManager</span><span class="p">,</span> <span class="n">DIEmployee</span><span class="p">,</span> <span class="n">DIPerson</span><span class="p">])</span>
<span class="n">kwargs</span> <span class="o">=</span> <span class="p">{</span><span class="s1">'firstName'</span><span class="p">:</span> <span class="s1">'John'</span><span class="p">,</span> <span class="s1">'lastName'</span><span class="p">:</span> <span class="s1">'Doe'</span><span class="p">,</span>
<span class="s1">'so_position'</span><span class="p">:</span> <span class="s1">'Project Manager'</span><span class="p">}</span>
<span class="n">DIManager</span><span class="p">(</span><span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
<span class="n">persons</span> <span class="o">=</span> <span class="n">DIEmployee</span><span class="o">.</span><span class="n">select</span><span class="p">(</span><span class="n">DIPerson</span><span class="o">.</span><span class="n">q</span><span class="o">.</span><span class="n">firstName</span> <span class="o">==</span> <span class="s1">'John'</span><span class="p">)</span>
<span class="k">assert</span> <span class="n">persons</span><span class="o">.</span><span class="n">count</span><span class="p">()</span> <span class="o">==</span> <span class="mi">1</span>
<span class="n">kwargs</span> <span class="o">=</span> <span class="p">{</span><span class="s1">'firstName'</span><span class="p">:</span> <span class="s1">'John'</span><span class="p">,</span> <span class="s1">'lastName'</span><span class="p">:</span> <span class="s1">'Doe II'</span><span class="p">,</span>
<span class="s1">'so_position'</span><span class="p">:</span> <span class="s1">'Project Manager'</span><span class="p">}</span>
<span class="n">raises</span><span class="p">(</span><span class="ne">Exception</span><span class="p">,</span> <span class="n">DIManager</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
<span class="n">persons</span> <span class="o">=</span> <span class="n">DIPerson</span><span class="o">.</span><span class="n">select</span><span class="p">(</span><span class="n">DIPerson</span><span class="o">.</span><span class="n">q</span><span class="o">.</span><span class="n">firstName</span> <span class="o">==</span> <span class="s1">'John'</span><span class="p">)</span>
<span class="k">assert</span> <span class="n">persons</span><span class="o">.</span><span class="n">count</span><span class="p">()</span> <span class="o">==</span> <span class="mi">1</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">supports</span><span class="p">(</span><span class="s1">'transactions'</span><span class="p">):</span>
<span class="n">skip</span><span class="p">(</span><span class="s2">"Transactions aren't supported"</span><span class="p">)</span>
<span class="n">transaction</span> <span class="o">=</span> <span class="n">DIPerson</span><span class="o">.</span><span class="n">_connection</span><span class="o">.</span><span class="n">transaction</span><span class="p">()</span>
<span class="n">kwargs</span> <span class="o">=</span> <span class="p">{</span><span class="s1">'firstName'</span><span class="p">:</span> <span class="s1">'John'</span><span class="p">,</span> <span class="s1">'lastName'</span><span class="p">:</span> <span class="s1">'Doe III'</span><span class="p">,</span>
<span class="s1">'so_position'</span><span class="p">:</span> <span class="s1">'Project Manager'</span><span class="p">}</span>
<span class="n">raises</span><span class="p">(</span><span class="ne">Exception</span><span class="p">,</span> <span class="n">DIManager</span><span class="p">,</span> <span class="n">connection</span><span class="o">=</span><span class="n">transaction</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
<span class="n">transaction</span><span class="o">.</span><span class="n">rollback</span><span class="p">()</span>
<span class="n">transaction</span><span class="o">.</span><span class="n">begin</span><span class="p">()</span>
<span class="n">persons</span> <span class="o">=</span> <span class="n">DIPerson</span><span class="o">.</span><span class="n">select</span><span class="p">(</span><span class="n">DIPerson</span><span class="o">.</span><span class="n">q</span><span class="o">.</span><span class="n">firstName</span> <span class="o">==</span> <span class="s1">'John'</span><span class="p">,</span>
<span class="n">connection</span><span class="o">=</span><span class="n">transaction</span><span class="p">)</span>
<span class="k">assert</span> <span class="n">persons</span><span class="o">.</span><span class="n">count</span><span class="p">()</span> <span class="o">==</span> <span class="mi">1</span>
</div>
<div class="viewcode-block" id="test_deep_inheritance"><a class="viewcode-back" href="../../../../api/sqlobject.inheritance.tests.test_deep_inheritance.html#sqlobject.inheritance.tests.test_deep_inheritance.test_deep_inheritance">[docs]</a><span class="k">def</span> <span class="nf">test_deep_inheritance</span><span class="p">():</span>
<span class="n">setupClass</span><span class="p">([</span><span class="n">DIManager</span><span class="p">,</span> <span class="n">DIEmployee</span><span class="p">,</span> <span class="n">DIPerson</span><span class="p">])</span>
<span class="n">manager</span> <span class="o">=</span> <span class="n">DIManager</span><span class="p">(</span><span class="n">firstName</span><span class="o">=</span><span class="s1">'Project'</span><span class="p">,</span> <span class="n">lastName</span><span class="o">=</span><span class="s1">'Manager'</span><span class="p">,</span>
<span class="n">so_position</span><span class="o">=</span><span class="s1">'Project Manager'</span><span class="p">)</span>
<span class="n">manager_id</span> <span class="o">=</span> <span class="n">manager</span><span class="o">.</span><span class="n">id</span>
<span class="n">employee_id</span> <span class="o">=</span> <span class="n">DIEmployee</span><span class="p">(</span><span class="n">firstName</span><span class="o">=</span><span class="s1">'Project'</span><span class="p">,</span> <span class="n">lastName</span><span class="o">=</span><span class="s1">'Leader'</span><span class="p">,</span>
<span class="n">so_position</span><span class="o">=</span><span class="s1">'Project leader'</span><span class="p">,</span> <span class="n">manager</span><span class="o">=</span><span class="n">manager</span><span class="p">)</span><span class="o">.</span><span class="n">id</span>
<span class="n">DIPerson</span><span class="p">(</span><span class="n">firstName</span><span class="o">=</span><span class="s1">'Oneof'</span><span class="p">,</span> <span class="n">lastName</span><span class="o">=</span><span class="s1">'Authors'</span><span class="p">,</span> <span class="n">manager</span><span class="o">=</span><span class="n">manager</span><span class="p">)</span>
<span class="n">conn</span> <span class="o">=</span> <span class="n">getConnection</span><span class="p">()</span>
<span class="n">cache</span> <span class="o">=</span> <span class="n">conn</span><span class="o">.</span><span class="n">cache</span>
<span class="n">cache</span><span class="o">.</span><span class="n">clear</span><span class="p">()</span>
<span class="n">managers</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">DIManager</span><span class="o">.</span><span class="n">select</span><span class="p">())</span>
<span class="k">assert</span> <span class="nb">len</span><span class="p">(</span><span class="n">managers</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span>
<span class="n">cache</span><span class="o">.</span><span class="n">clear</span><span class="p">()</span>
<span class="n">employees</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">DIEmployee</span><span class="o">.</span><span class="n">select</span><span class="p">())</span>
<span class="k">assert</span> <span class="nb">len</span><span class="p">(</span><span class="n">employees</span><span class="p">)</span> <span class="o">==</span> <span class="mi">2</span>
<span class="n">cache</span><span class="o">.</span><span class="n">clear</span><span class="p">()</span>
<span class="n">persons</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">DIPerson</span><span class="o">.</span><span class="n">select</span><span class="p">())</span>
<span class="k">assert</span> <span class="nb">len</span><span class="p">(</span><span class="n">persons</span><span class="p">)</span> <span class="o">==</span> <span class="mi">3</span>
<span class="n">cache</span><span class="o">.</span><span class="n">clear</span><span class="p">()</span>
<span class="n">person</span> <span class="o">=</span> <span class="n">DIPerson</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">employee_id</span><span class="p">)</span>
<span class="k">assert</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">person</span><span class="p">,</span> <span class="n">DIEmployee</span><span class="p">)</span>
<span class="n">person</span> <span class="o">=</span> <span class="n">DIPerson</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">manager_id</span><span class="p">)</span>
<span class="k">assert</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">person</span><span class="p">,</span> <span class="n">DIEmployee</span><span class="p">)</span>
<span class="k">assert</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">person</span><span class="p">,</span> <span class="n">DIManager</span><span class="p">)</span>
<span class="n">cache</span><span class="o">.</span><span class="n">clear</span><span class="p">()</span>
<span class="n">person</span> <span class="o">=</span> <span class="n">DIEmployee</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">manager_id</span><span class="p">)</span>
<span class="k">assert</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">person</span><span class="p">,</span> <span class="n">DIManager</span><span class="p">)</span>
<span class="n">conn</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
</pre></div></div>
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