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| <section id="tuple-policy"> |
| <h1>Tuple Policy<a class="headerlink" href="#tuple-policy" title="Link to this heading"></a></h1> |
| <p>A Tuple Policy is needed when using a <a class="reference internal" href="../distinct_counting/tuple.html#datasketches.tuple_sketch" title="datasketches.tuple_sketch"><code class="xref py py-class docutils literal notranslate"><span class="pre">tuple_sketch</span></code></a> in order to specify how the |
| summary values should be created, updated, combined, or intersected. A summary can consist of |
| any python object.</p> |
| <p>Each implementation must extend the abstract base class <a class="reference internal" href="#datasketches.TuplePolicy" title="datasketches.TuplePolicy"><code class="xref py py-class docutils literal notranslate"><span class="pre">TuplePolicy</span></code></a>.</p> |
| <dl class="py class"> |
| <dt class="sig sig-object py" id="datasketches.TuplePolicy"> |
| <em class="property"><span class="k"><span class="pre">class</span></span><span class="w"> </span></em><span class="sig-name descname"><span class="pre">TuplePolicy</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="o"><span class="pre">*</span></span><span class="n"><span class="pre">args</span></span></em>, <em class="sig-param"><span class="o"><span class="pre">**</span></span><span class="n"><span class="pre">kwargs</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#datasketches.TuplePolicy" title="Link to this definition"></a></dt> |
| <dd><p>An abstract base class for Tuple Policy objects. All custom policies must extend this class.</p> |
| <dl class="py method"> |
| <dt class="sig sig-object py" id="datasketches.TuplePolicy.create_summary"> |
| <span class="sig-name descname"><span class="pre">create_summary</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">self</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><span class="pre">object</span></span></span><a class="headerlink" href="#datasketches.TuplePolicy.create_summary" title="Link to this definition"></a></dt> |
| <dd><p>Creates a new Summary object</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Returns<span class="colon">:</span></dt> |
| <dd class="field-odd"><p>a Summary object</p> |
| </dd> |
| <dt class="field-even">Return type<span class="colon">:</span></dt> |
| <dd class="field-even"><p><code class="xref py py-class docutils literal notranslate"><span class="pre">object</span></code></p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt class="sig sig-object py" id="datasketches.TuplePolicy.update_summary"> |
| <span class="sig-name descname"><span class="pre">update_summary</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">self</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">summary</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">object</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">update</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">object</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><span class="pre">object</span></span></span><a class="headerlink" href="#datasketches.TuplePolicy.update_summary" title="Link to this definition"></a></dt> |
| <dd><p>Applies the relevant policy to update the provided summary with the data in update.</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters<span class="colon">:</span></dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>summary</strong> (<code class="xref py py-class docutils literal notranslate"><span class="pre">object</span></code>) – An existing Summary</p></li> |
| <li><p><strong>update</strong> (<code class="xref py py-class docutils literal notranslate"><span class="pre">object</span></code>) – An update to apply to the Summary</p></li> |
| </ul> |
| </dd> |
| <dt class="field-even">Returns<span class="colon">:</span></dt> |
| <dd class="field-even"><p>The updated Summary</p> |
| </dd> |
| <dt class="field-odd">Return type<span class="colon">:</span></dt> |
| <dd class="field-odd"><p><code class="xref py py-class docutils literal notranslate"><span class="pre">object</span></code></p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| <dl class="py method"> |
| <dt class="sig sig-object py" id="datasketches.TuplePolicy.__call__"> |
| <span class="sig-name descname"><span class="pre">__call__</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">self</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">summary</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">object</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">update</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">object</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><span class="pre">object</span></span></span><a class="headerlink" href="#datasketches.TuplePolicy.__call__" title="Link to this definition"></a></dt> |
| <dd><p>Similar to update_summary but allows a different implementation for set operations (union and intersection)</p> |
| <dl class="field-list simple"> |
| <dt class="field-odd">Parameters<span class="colon">:</span></dt> |
| <dd class="field-odd"><ul class="simple"> |
| <li><p><strong>summary</strong> (<code class="xref py py-class docutils literal notranslate"><span class="pre">object</span></code>) – An existing Summary</p></li> |
| <li><p><strong>update</strong> (<code class="xref py py-class docutils literal notranslate"><span class="pre">object</span></code>) – An update to apply to the Summary</p></li> |
| </ul> |
| </dd> |
| <dt class="field-even">Returns<span class="colon">:</span></dt> |
| <dd class="field-even"><p>The updated Summary</p> |
| </dd> |
| <dt class="field-odd">Return type<span class="colon">:</span></dt> |
| <dd class="field-odd"><p><code class="xref py py-class docutils literal notranslate"><span class="pre">object</span></code></p> |
| </dd> |
| </dl> |
| </dd></dl> |
| |
| </dd></dl> |
| |
| <dl class="py class"> |
| <dt class="sig sig-object py" id="datasketches.AccumulatorPolicy"> |
| <em class="property"><span class="k"><span class="pre">class</span></span><span class="w"> </span></em><span class="sig-name descname"><span class="pre">AccumulatorPolicy</span></span><a class="headerlink" href="#datasketches.AccumulatorPolicy" title="Link to this definition"></a></dt> |
| <dd><p>Bases: <a class="reference internal" href="#datasketches.TuplePolicy" title="_datasketches.TuplePolicy"><code class="xref py py-class docutils literal notranslate"><span class="pre">TuplePolicy</span></code></a></p> |
| <p>Implements an accumulatory summary policy, where new values |
| are added to the existing value.</p> |
| </dd></dl> |
| |
| <dl class="py class"> |
| <dt class="sig sig-object py" id="datasketches.MinIntPolicy"> |
| <em class="property"><span class="k"><span class="pre">class</span></span><span class="w"> </span></em><span class="sig-name descname"><span class="pre">MinIntPolicy</span></span><a class="headerlink" href="#datasketches.MinIntPolicy" title="Link to this definition"></a></dt> |
| <dd><p>Bases: <a class="reference internal" href="#datasketches.TuplePolicy" title="_datasketches.TuplePolicy"><code class="xref py py-class docutils literal notranslate"><span class="pre">TuplePolicy</span></code></a></p> |
| <p>Implements a MIN rule, where the smallest integer value is always kept.</p> |
| </dd></dl> |
| |
| <dl class="py class"> |
| <dt class="sig sig-object py" id="datasketches.MaxIntPolicy"> |
| <em class="property"><span class="k"><span class="pre">class</span></span><span class="w"> </span></em><span class="sig-name descname"><span class="pre">MaxIntPolicy</span></span><a class="headerlink" href="#datasketches.MaxIntPolicy" title="Link to this definition"></a></dt> |
| <dd><p>Bases: <a class="reference internal" href="#datasketches.TuplePolicy" title="_datasketches.TuplePolicy"><code class="xref py py-class docutils literal notranslate"><span class="pre">TuplePolicy</span></code></a></p> |
| <p>Implements a MAX rule, where the largest integer value is always kept.</p> |
| </dd></dl> |
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