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<h1>Source code for django.db.models.aggregates</h1><div class="highlight"><pre>
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<span></span><span class="sd">"""</span>
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<span class="sd">Classes to represent the definitions of aggregate functions.</span>
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<span class="sd">"""</span>
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<span class="kn">from</span><span class="w"> </span><span class="nn">django.core.exceptions</span><span class="w"> </span><span class="kn">import</span> <span class="n">FieldError</span><span class="p">,</span> <span class="n">FullResultSet</span>
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<span class="kn">from</span><span class="w"> </span><span class="nn">django.db.models.expressions</span><span class="w"> </span><span class="kn">import</span> <span class="n">Case</span><span class="p">,</span> <span class="n">Func</span><span class="p">,</span> <span class="n">Star</span><span class="p">,</span> <span class="n">Value</span><span class="p">,</span> <span class="n">When</span>
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<span class="kn">from</span><span class="w"> </span><span class="nn">django.db.models.fields</span><span class="w"> </span><span class="kn">import</span> <span class="n">IntegerField</span>
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<span class="kn">from</span><span class="w"> </span><span class="nn">django.db.models.functions.comparison</span><span class="w"> </span><span class="kn">import</span> <span class="n">Coalesce</span>
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<span class="kn">from</span><span class="w"> </span><span class="nn">django.db.models.functions.mixins</span><span class="w"> </span><span class="kn">import</span> <span class="p">(</span>
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<span class="n">FixDurationInputMixin</span><span class="p">,</span>
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<span class="n">NumericOutputFieldMixin</span><span class="p">,</span>
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<span class="p">)</span>
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<span class="n">__all__</span> <span class="o">=</span> <span class="p">[</span>
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<span class="s2">"Aggregate"</span><span class="p">,</span>
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<span class="s2">"Avg"</span><span class="p">,</span>
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<span class="s2">"Count"</span><span class="p">,</span>
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<span class="s2">"Max"</span><span class="p">,</span>
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<span class="s2">"Min"</span><span class="p">,</span>
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<span class="s2">"StdDev"</span><span class="p">,</span>
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<span class="s2">"Sum"</span><span class="p">,</span>
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<span class="s2">"Variance"</span><span class="p">,</span>
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<span class="p">]</span>
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<span class="k">class</span><span class="w"> </span><span class="nc">Aggregate</span><span class="p">(</span><span class="n">Func</span><span class="p">):</span>
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<span class="n">template</span> <span class="o">=</span> <span class="s2">"</span><span class="si">%(function)s</span><span class="s2">(</span><span class="si">%(distinct)s%(expressions)s</span><span class="s2">)"</span>
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<span class="n">contains_aggregate</span> <span class="o">=</span> <span class="kc">True</span>
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<span class="n">name</span> <span class="o">=</span> <span class="kc">None</span>
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<span class="n">filter_template</span> <span class="o">=</span> <span class="s2">"</span><span class="si">%s</span><span class="s2"> FILTER (WHERE </span><span class="si">%%</span><span class="s2">(filter)s)"</span>
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<span class="n">window_compatible</span> <span class="o">=</span> <span class="kc">True</span>
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<span class="n">allow_distinct</span> <span class="o">=</span> <span class="kc">False</span>
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<span class="n">empty_result_set_value</span> <span class="o">=</span> <span class="kc">None</span>
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<span class="k">def</span><span class="w"> </span><span class="fm">__init__</span><span class="p">(</span>
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<span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">expressions</span><span class="p">,</span> <span class="n">distinct</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="nb">filter</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">default</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="o">**</span><span class="n">extra</span>
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<span class="p">):</span>
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<span class="k">if</span> <span class="n">distinct</span> <span class="ow">and</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">allow_distinct</span><span class="p">:</span>
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<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"</span><span class="si">%s</span><span class="s2"> does not allow distinct."</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="vm">__class__</span><span class="o">.</span><span class="vm">__name__</span><span class="p">)</span>
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<span class="k">if</span> <span class="n">default</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">empty_result_set_value</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
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<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="vm">__class__</span><span class="o">.</span><span class="vm">__name__</span><span class="si">}</span><span class="s2"> does not allow default."</span><span class="p">)</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">distinct</span> <span class="o">=</span> <span class="n">distinct</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">filter</span> <span class="o">=</span> <span class="nb">filter</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">default</span> <span class="o">=</span> <span class="n">default</span>
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<span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="o">*</span><span class="n">expressions</span><span class="p">,</span> <span class="o">**</span><span class="n">extra</span><span class="p">)</span>
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<span class="k">def</span><span class="w"> </span><span class="nf">get_source_fields</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
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<span class="c1"># Don't return the filter expression since it's not a source field.</span>
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<span class="k">return</span> <span class="p">[</span><span class="n">e</span><span class="o">.</span><span class="n">_output_field_or_none</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="n">get_source_expressions</span><span class="p">()]</span>
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<span class="k">def</span><span class="w"> </span><span class="nf">get_source_expressions</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
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<span class="n">source_expressions</span> <span class="o">=</span> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="n">get_source_expressions</span><span class="p">()</span>
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<span class="k">return</span> <span class="n">source_expressions</span> <span class="o">+</span> <span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">filter</span><span class="p">]</span>
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<span class="k">def</span><span class="w"> </span><span class="nf">set_source_expressions</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">exprs</span><span class="p">):</span>
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|
<span class="o">*</span><span class="n">exprs</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">filter</span> <span class="o">=</span> <span class="n">exprs</span>
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|
<span class="k">return</span> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="n">set_source_expressions</span><span class="p">(</span><span class="n">exprs</span><span class="p">)</span>
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<span class="k">def</span><span class="w"> </span><span class="nf">resolve_expression</span><span class="p">(</span>
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<span class="bp">self</span><span class="p">,</span> <span class="n">query</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">allow_joins</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">reuse</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">summarize</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">for_save</span><span class="o">=</span><span class="kc">False</span>
|
|
<span class="p">):</span>
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|
<span class="c1"># Aggregates are not allowed in UPDATE queries, so ignore for_save</span>
|
|
<span class="n">c</span> <span class="o">=</span> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="n">resolve_expression</span><span class="p">(</span><span class="n">query</span><span class="p">,</span> <span class="n">allow_joins</span><span class="p">,</span> <span class="n">reuse</span><span class="p">,</span> <span class="n">summarize</span><span class="p">)</span>
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<span class="n">c</span><span class="o">.</span><span class="n">filter</span> <span class="o">=</span> <span class="p">(</span>
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<span class="n">c</span><span class="o">.</span><span class="n">filter</span><span class="o">.</span><span class="n">resolve_expression</span><span class="p">(</span><span class="n">query</span><span class="p">,</span> <span class="n">allow_joins</span><span class="p">,</span> <span class="n">reuse</span><span class="p">,</span> <span class="n">summarize</span><span class="p">)</span>
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<span class="k">if</span> <span class="n">c</span><span class="o">.</span><span class="n">filter</span>
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<span class="k">else</span> <span class="kc">None</span>
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<span class="p">)</span>
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<span class="k">if</span> <span class="n">summarize</span><span class="p">:</span>
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<span class="c1"># Summarized aggregates cannot refer to summarized aggregates.</span>
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|
<span class="k">for</span> <span class="n">ref</span> <span class="ow">in</span> <span class="n">c</span><span class="o">.</span><span class="n">get_refs</span><span class="p">():</span>
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|
<span class="k">if</span> <span class="n">query</span><span class="o">.</span><span class="n">annotations</span><span class="p">[</span><span class="n">ref</span><span class="p">]</span><span class="o">.</span><span class="n">is_summary</span><span class="p">:</span>
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<span class="k">raise</span> <span class="n">FieldError</span><span class="p">(</span>
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|
<span class="sa">f</span><span class="s2">"Cannot compute </span><span class="si">{</span><span class="n">c</span><span class="o">.</span><span class="n">name</span><span class="si">}</span><span class="s2">('</span><span class="si">{</span><span class="n">ref</span><span class="si">}</span><span class="s2">'): '</span><span class="si">{</span><span class="n">ref</span><span class="si">}</span><span class="s2">' is an aggregate"</span>
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|
<span class="p">)</span>
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|
<span class="k">elif</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_summary</span><span class="p">:</span>
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|
<span class="c1"># Call Aggregate.get_source_expressions() to avoid</span>
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|
<span class="c1"># returning self.filter and including that in this loop.</span>
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|
<span class="n">expressions</span> <span class="o">=</span> <span class="nb">super</span><span class="p">(</span><span class="n">Aggregate</span><span class="p">,</span> <span class="n">c</span><span class="p">)</span><span class="o">.</span><span class="n">get_source_expressions</span><span class="p">()</span>
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<span class="k">for</span> <span class="n">index</span><span class="p">,</span> <span class="n">expr</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">expressions</span><span class="p">):</span>
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|
<span class="k">if</span> <span class="n">expr</span><span class="o">.</span><span class="n">contains_aggregate</span><span class="p">:</span>
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|
<span class="n">before_resolved</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_source_expressions</span><span class="p">()[</span><span class="n">index</span><span class="p">]</span>
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|
<span class="n">name</span> <span class="o">=</span> <span class="p">(</span>
|
|
<span class="n">before_resolved</span><span class="o">.</span><span class="n">name</span>
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|
<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">before_resolved</span><span class="p">,</span> <span class="s2">"name"</span><span class="p">)</span>
|
|
<span class="k">else</span> <span class="nb">repr</span><span class="p">(</span><span class="n">before_resolved</span><span class="p">)</span>
|
|
<span class="p">)</span>
|
|
<span class="k">raise</span> <span class="n">FieldError</span><span class="p">(</span>
|
|
<span class="s2">"Cannot compute </span><span class="si">%s</span><span class="s2">('</span><span class="si">%s</span><span class="s2">'): '</span><span class="si">%s</span><span class="s2">' is an aggregate"</span>
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|
<span class="o">%</span> <span class="p">(</span><span class="n">c</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span>
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|
<span class="p">)</span>
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|
<span class="k">if</span> <span class="p">(</span><span class="n">default</span> <span class="o">:=</span> <span class="n">c</span><span class="o">.</span><span class="n">default</span><span class="p">)</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
|
|
<span class="k">return</span> <span class="n">c</span>
|
|
<span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">default</span><span class="p">,</span> <span class="s2">"resolve_expression"</span><span class="p">):</span>
|
|
<span class="n">default</span> <span class="o">=</span> <span class="n">default</span><span class="o">.</span><span class="n">resolve_expression</span><span class="p">(</span><span class="n">query</span><span class="p">,</span> <span class="n">allow_joins</span><span class="p">,</span> <span class="n">reuse</span><span class="p">,</span> <span class="n">summarize</span><span class="p">)</span>
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|
<span class="k">if</span> <span class="n">default</span><span class="o">.</span><span class="n">_output_field_or_none</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
|
|
<span class="n">default</span><span class="o">.</span><span class="n">output_field</span> <span class="o">=</span> <span class="n">c</span><span class="o">.</span><span class="n">_output_field_or_none</span>
|
|
<span class="k">else</span><span class="p">:</span>
|
|
<span class="n">default</span> <span class="o">=</span> <span class="n">Value</span><span class="p">(</span><span class="n">default</span><span class="p">,</span> <span class="n">c</span><span class="o">.</span><span class="n">_output_field_or_none</span><span class="p">)</span>
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|
<span class="n">c</span><span class="o">.</span><span class="n">default</span> <span class="o">=</span> <span class="kc">None</span> <span class="c1"># Reset the default argument before wrapping.</span>
|
|
<span class="n">coalesce</span> <span class="o">=</span> <span class="n">Coalesce</span><span class="p">(</span><span class="n">c</span><span class="p">,</span> <span class="n">default</span><span class="p">,</span> <span class="n">output_field</span><span class="o">=</span><span class="n">c</span><span class="o">.</span><span class="n">_output_field_or_none</span><span class="p">)</span>
|
|
<span class="n">coalesce</span><span class="o">.</span><span class="n">is_summary</span> <span class="o">=</span> <span class="n">c</span><span class="o">.</span><span class="n">is_summary</span>
|
|
<span class="k">return</span> <span class="n">coalesce</span>
|
|
|
|
<span class="nd">@property</span>
|
|
<span class="k">def</span><span class="w"> </span><span class="nf">default_alias</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
|
|
<span class="n">expressions</span> <span class="o">=</span> <span class="p">[</span>
|
|
<span class="n">expr</span> <span class="k">for</span> <span class="n">expr</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_source_expressions</span><span class="p">()</span> <span class="k">if</span> <span class="n">expr</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span>
|
|
<span class="p">]</span>
|
|
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">expressions</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span> <span class="ow">and</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="s2">"name"</span><span class="p">):</span>
|
|
<span class="k">return</span> <span class="s2">"</span><span class="si">%s</span><span class="s2">__</span><span class="si">%s</span><span class="s2">"</span> <span class="o">%</span> <span class="p">(</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">name</span><span class="o">.</span><span class="n">lower</span><span class="p">())</span>
|
|
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"Complex expressions require an alias"</span><span class="p">)</span>
|
|
|
|
<span class="k">def</span><span class="w"> </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="p">[]</span>
|
|
|
|
<span class="k">def</span><span class="w"> </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="o">**</span><span class="n">extra_context</span><span class="p">):</span>
|
|
<span class="n">extra_context</span><span class="p">[</span><span class="s2">"distinct"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"DISTINCT "</span> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">distinct</span> <span class="k">else</span> <span class="s2">""</span>
|
|
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">filter</span><span class="p">:</span>
|
|
<span class="k">if</span> <span class="n">connection</span><span class="o">.</span><span class="n">features</span><span class="o">.</span><span class="n">supports_aggregate_filter_clause</span><span class="p">:</span>
|
|
<span class="k">try</span><span class="p">:</span>
|
|
<span class="n">filter_sql</span><span class="p">,</span> <span class="n">filter_params</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">filter</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">except</span> <span class="n">FullResultSet</span><span class="p">:</span>
|
|
<span class="k">pass</span>
|
|
<span class="k">else</span><span class="p">:</span>
|
|
<span class="n">template</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">filter_template</span> <span class="o">%</span> <span class="n">extra_context</span><span class="o">.</span><span class="n">get</span><span class="p">(</span>
|
|
<span class="s2">"template"</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">template</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="nb">super</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">template</span><span class="o">=</span><span class="n">template</span><span class="p">,</span>
|
|
<span class="nb">filter</span><span class="o">=</span><span class="n">filter_sql</span><span class="p">,</span>
|
|
<span class="o">**</span><span class="n">extra_context</span><span class="p">,</span>
|
|
<span class="p">)</span>
|
|
<span class="k">return</span> <span class="n">sql</span><span class="p">,</span> <span class="p">(</span><span class="o">*</span><span class="n">params</span><span class="p">,</span> <span class="o">*</span><span class="n">filter_params</span><span class="p">)</span>
|
|
<span class="k">else</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">filter</span> <span class="o">=</span> <span class="kc">None</span>
|
|
<span class="n">source_expressions</span> <span class="o">=</span> <span class="n">copy</span><span class="o">.</span><span class="n">get_source_expressions</span><span class="p">()</span>
|
|
<span class="n">condition</span> <span class="o">=</span> <span class="n">When</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">filter</span><span class="p">,</span> <span class="n">then</span><span class="o">=</span><span class="n">source_expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
|
|
<span class="n">copy</span><span class="o">.</span><span class="n">set_source_expressions</span><span class="p">([</span><span class="n">Case</span><span class="p">(</span><span class="n">condition</span><span class="p">)]</span> <span class="o">+</span> <span class="n">source_expressions</span><span class="p">[</span><span class="mi">1</span><span class="p">:])</span>
|
|
<span class="k">return</span> <span class="nb">super</span><span class="p">(</span><span class="n">Aggregate</span><span class="p">,</span> <span class="n">copy</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="o">**</span><span class="n">extra_context</span>
|
|
<span class="p">)</span>
|
|
<span class="k">return</span> <span class="nb">super</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="o">**</span><span class="n">extra_context</span><span class="p">)</span>
|
|
|
|
<span class="k">def</span><span class="w"> </span><span class="nf">_get_repr_options</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
|
|
<span class="n">options</span> <span class="o">=</span> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="n">_get_repr_options</span><span class="p">()</span>
|
|
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">distinct</span><span class="p">:</span>
|
|
<span class="n">options</span><span class="p">[</span><span class="s2">"distinct"</span><span class="p">]</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">distinct</span>
|
|
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">filter</span><span class="p">:</span>
|
|
<span class="n">options</span><span class="p">[</span><span class="s2">"filter"</span><span class="p">]</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">filter</span>
|
|
<span class="k">return</span> <span class="n">options</span>
|
|
|
|
|
|
<span class="k">class</span><span class="w"> </span><span class="nc">Avg</span><span class="p">(</span><span class="n">FixDurationInputMixin</span><span class="p">,</span> <span class="n">NumericOutputFieldMixin</span><span class="p">,</span> <span class="n">Aggregate</span><span class="p">):</span>
|
|
<span class="n">function</span> <span class="o">=</span> <span class="s2">"AVG"</span>
|
|
<span class="n">name</span> <span class="o">=</span> <span class="s2">"Avg"</span>
|
|
<span class="n">allow_distinct</span> <span class="o">=</span> <span class="kc">True</span>
|
|
|
|
|
|
<div class="viewcode-block" id="Count">
|
|
<a class="viewcode-back" href="../../../../api/evennia.typeclasses.managers.html#evennia.commands.default.building.Count">[docs]</a>
|
|
<span class="k">class</span><span class="w"> </span><span class="nc">Count</span><span class="p">(</span><span class="n">Aggregate</span><span class="p">):</span>
|
|
<span class="n">function</span> <span class="o">=</span> <span class="s2">"COUNT"</span>
|
|
<span class="n">name</span> <span class="o">=</span> <span class="s2">"Count"</span>
|
|
<span class="n">output_field</span> <span class="o">=</span> <span class="n">IntegerField</span><span class="p">()</span>
|
|
<span class="n">allow_distinct</span> <span class="o">=</span> <span class="kc">True</span>
|
|
<span class="n">empty_result_set_value</span> <span class="o">=</span> <span class="mi">0</span>
|
|
|
|
<div class="viewcode-block" id="Count.__init__">
|
|
<a class="viewcode-back" href="../../../../api/evennia.typeclasses.managers.html#evennia.commands.default.building.Count.__init__">[docs]</a>
|
|
<span class="k">def</span><span class="w"> </span><span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">,</span> <span class="nb">filter</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="o">**</span><span class="n">extra</span><span class="p">):</span>
|
|
<span class="k">if</span> <span class="n">expression</span> <span class="o">==</span> <span class="s2">"*"</span><span class="p">:</span>
|
|
<span class="n">expression</span> <span class="o">=</span> <span class="n">Star</span><span class="p">()</span>
|
|
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">Star</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">filter</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
|
|
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">"Star cannot be used with filter. Please specify a field."</span><span class="p">)</span>
|
|
<span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="nb">filter</span><span class="o">=</span><span class="nb">filter</span><span class="p">,</span> <span class="o">**</span><span class="n">extra</span><span class="p">)</span></div>
|
|
</div>
|
|
|
|
|
|
|
|
<div class="viewcode-block" id="Max">
|
|
<a class="viewcode-back" href="../../../../api/evennia.commands.default.building.html#evennia.commands.default.building.Max">[docs]</a>
|
|
<span class="k">class</span><span class="w"> </span><span class="nc">Max</span><span class="p">(</span><span class="n">Aggregate</span><span class="p">):</span>
|
|
<span class="n">function</span> <span class="o">=</span> <span class="s2">"MAX"</span>
|
|
<span class="n">name</span> <span class="o">=</span> <span class="s2">"Max"</span></div>
|
|
|
|
|
|
|
|
<div class="viewcode-block" id="Min">
|
|
<a class="viewcode-back" href="../../../../api/evennia.commands.default.building.html#evennia.commands.default.building.Min">[docs]</a>
|
|
<span class="k">class</span><span class="w"> </span><span class="nc">Min</span><span class="p">(</span><span class="n">Aggregate</span><span class="p">):</span>
|
|
<span class="n">function</span> <span class="o">=</span> <span class="s2">"MIN"</span>
|
|
<span class="n">name</span> <span class="o">=</span> <span class="s2">"Min"</span></div>
|
|
|
|
|
|
|
|
<span class="k">class</span><span class="w"> </span><span class="nc">StdDev</span><span class="p">(</span><span class="n">NumericOutputFieldMixin</span><span class="p">,</span> <span class="n">Aggregate</span><span class="p">):</span>
|
|
<span class="n">name</span> <span class="o">=</span> <span class="s2">"StdDev"</span>
|
|
|
|
<span class="k">def</span><span class="w"> </span><span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">,</span> <span class="n">sample</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="o">**</span><span class="n">extra</span><span class="p">):</span>
|
|
<span class="bp">self</span><span class="o">.</span><span class="n">function</span> <span class="o">=</span> <span class="s2">"STDDEV_SAMP"</span> <span class="k">if</span> <span class="n">sample</span> <span class="k">else</span> <span class="s2">"STDDEV_POP"</span>
|
|
<span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="o">**</span><span class="n">extra</span><span class="p">)</span>
|
|
|
|
<span class="k">def</span><span class="w"> </span><span class="nf">_get_repr_options</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
|
|
<span class="k">return</span> <span class="p">{</span><span class="o">**</span><span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="n">_get_repr_options</span><span class="p">(),</span> <span class="s2">"sample"</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">function</span> <span class="o">==</span> <span class="s2">"STDDEV_SAMP"</span><span class="p">}</span>
|
|
|
|
|
|
<span class="k">class</span><span class="w"> </span><span class="nc">Sum</span><span class="p">(</span><span class="n">FixDurationInputMixin</span><span class="p">,</span> <span class="n">Aggregate</span><span class="p">):</span>
|
|
<span class="n">function</span> <span class="o">=</span> <span class="s2">"SUM"</span>
|
|
<span class="n">name</span> <span class="o">=</span> <span class="s2">"Sum"</span>
|
|
<span class="n">allow_distinct</span> <span class="o">=</span> <span class="kc">True</span>
|
|
|
|
|
|
<span class="k">class</span><span class="w"> </span><span class="nc">Variance</span><span class="p">(</span><span class="n">NumericOutputFieldMixin</span><span class="p">,</span> <span class="n">Aggregate</span><span class="p">):</span>
|
|
<span class="n">name</span> <span class="o">=</span> <span class="s2">"Variance"</span>
|
|
|
|
<span class="k">def</span><span class="w"> </span><span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">,</span> <span class="n">sample</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="o">**</span><span class="n">extra</span><span class="p">):</span>
|
|
<span class="bp">self</span><span class="o">.</span><span class="n">function</span> <span class="o">=</span> <span class="s2">"VAR_SAMP"</span> <span class="k">if</span> <span class="n">sample</span> <span class="k">else</span> <span class="s2">"VAR_POP"</span>
|
|
<span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="o">**</span><span class="n">extra</span><span class="p">)</span>
|
|
|
|
<span class="k">def</span><span class="w"> </span><span class="nf">_get_repr_options</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
|
|
<span class="k">return</span> <span class="p">{</span><span class="o">**</span><span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="n">_get_repr_options</span><span class="p">(),</span> <span class="s2">"sample"</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">function</span> <span class="o">==</span> <span class="s2">"VAR_SAMP"</span><span class="p">}</span>
|
|
</pre></div>
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</div>
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