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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="../../../../org/apache/datasketches/tuple/package-summary.html">org.apache.datasketches.tuple</a></div> |
| <h2 title="Class Union" class="title">Class Union<S extends <a href="../../../../org/apache/datasketches/tuple/Summary.html" title="interface in org.apache.datasketches.tuple">Summary</a>></h2> |
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| <dd><code>S</code> - Type of Summary</dd> |
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| <br> |
| <pre>public class <span class="typeNameLabel">Union<S extends <a href="../../../../org/apache/datasketches/tuple/Summary.html" title="interface in org.apache.datasketches.tuple">Summary</a>></span> |
| extends <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre> |
| <div class="block">Compute the union of two or more generic tuple sketches or generic tuple sketches combined with |
| theta sketches. A new instance represents an empty set.</div> |
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| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/datasketches/tuple/Union.html#Union-int-org.apache.datasketches.tuple.SummarySetOperations-">Union</a></span>​(int nomEntries, |
| <a href="../../../../org/apache/datasketches/tuple/SummarySetOperations.html" title="interface in org.apache.datasketches.tuple">SummarySetOperations</a><<a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a>> summarySetOps)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates new Union instance with instructions on how to process two summaries that |
| overlap.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/datasketches/tuple/Union.html#Union-org.apache.datasketches.tuple.SummarySetOperations-">Union</a></span>​(<a href="../../../../org/apache/datasketches/tuple/SummarySetOperations.html" title="interface in org.apache.datasketches.tuple">SummarySetOperations</a><<a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a>> summarySetOps)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates new Union instance with instructions on how to process two summaries that |
| overlap.</div> |
| </td> |
| </tr> |
| </table> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
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| <td class="colFirst"><code><a href="../../../../org/apache/datasketches/tuple/CompactSketch.html" title="class in org.apache.datasketches.tuple">CompactSketch</a><<a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/datasketches/tuple/Union.html#getResult--">getResult</a></span>​()</code></th> |
| <td class="colLast"> |
| <div class="block">Gets the result of a sequence of stateful <i>union</i> operations as an unordered CompactSketch</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/datasketches/tuple/Union.html#reset--">reset</a></span>​()</code></th> |
| <td class="colLast"> |
| <div class="block">Resets the internal set to the initial state, which represents an empty set.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/datasketches/tuple/Union.html#union-org.apache.datasketches.theta.Sketch-S-">union</a></span>​(<a href="../../../../org/apache/datasketches/theta/Sketch.html" title="class in org.apache.datasketches.theta">Sketch</a> thetaSketch, |
| <a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a> summary)</code></th> |
| <td class="colLast"> |
| <div class="block">Performs a stateful union of the internal set with the given thetaSketch by combining entries |
| using the hashes from the theta sketch and summary values from the given summary and rules |
| from the summarySetOps defined by the Union constructor.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/datasketches/tuple/Union.html#union-org.apache.datasketches.tuple.Sketch-">union</a></span>​(<a href="../../../../org/apache/datasketches/tuple/Sketch.html" title="class in org.apache.datasketches.tuple">Sketch</a><<a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a>> tupleSketch)</code></th> |
| <td class="colLast"> |
| <div class="block">Performs a stateful union of the internal set with the given tupleSketch.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/datasketches/tuple/CompactSketch.html" title="class in org.apache.datasketches.tuple">CompactSketch</a><<a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/datasketches/tuple/Union.html#union-org.apache.datasketches.tuple.Sketch-org.apache.datasketches.theta.Sketch-S-">union</a></span>​(<a href="../../../../org/apache/datasketches/tuple/Sketch.html" title="class in org.apache.datasketches.tuple">Sketch</a><<a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a>> tupleSketch, |
| <a href="../../../../org/apache/datasketches/theta/Sketch.html" title="class in org.apache.datasketches.theta">Sketch</a> thetaSketch, |
| <a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a> summary)</code></th> |
| <td class="colLast"> |
| <div class="block">Perform a stateless, pair-wise union operation between a tupleSketch and a thetaSketch.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/datasketches/tuple/CompactSketch.html" title="class in org.apache.datasketches.tuple">CompactSketch</a><<a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../org/apache/datasketches/tuple/Union.html#union-org.apache.datasketches.tuple.Sketch-org.apache.datasketches.tuple.Sketch-">union</a></span>​(<a href="../../../../org/apache/datasketches/tuple/Sketch.html" title="class in org.apache.datasketches.tuple">Sketch</a><<a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a>> tupleSketchA, |
| <a href="../../../../org/apache/datasketches/tuple/Sketch.html" title="class in org.apache.datasketches.tuple">Sketch</a><<a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a>> tupleSketchB)</code></th> |
| <td class="colLast"> |
| <div class="block">Perform a stateless, pair-wise union operation between two tuple sketches.</div> |
| </td> |
| </tr> |
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| <a name="Union-org.apache.datasketches.tuple.SummarySetOperations-"> |
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| <h4>Union</h4> |
| <pre>public Union​(<a href="../../../../org/apache/datasketches/tuple/SummarySetOperations.html" title="interface in org.apache.datasketches.tuple">SummarySetOperations</a><<a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a>> summarySetOps)</pre> |
| <div class="block">Creates new Union instance with instructions on how to process two summaries that |
| overlap. This will have the default nominal entries (K).</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>summarySetOps</code> - instance of SummarySetOperations</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="Union-int-org.apache.datasketches.tuple.SummarySetOperations-"> |
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| <h4>Union</h4> |
| <pre>public Union​(int nomEntries, |
| <a href="../../../../org/apache/datasketches/tuple/SummarySetOperations.html" title="interface in org.apache.datasketches.tuple">SummarySetOperations</a><<a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a>> summarySetOps)</pre> |
| <div class="block">Creates new Union instance with instructions on how to process two summaries that |
| overlap.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>nomEntries</code> - nominal entries (K). Forced to the nearest power of 2 greater than |
| given value.</dd> |
| <dd><code>summarySetOps</code> - instance of SummarySetOperations</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
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| <h3>Method Detail</h3> |
| <a name="union-org.apache.datasketches.tuple.Sketch-org.apache.datasketches.tuple.Sketch-"> |
| <!-- --> |
| </a> |
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| <h4>union</h4> |
| <pre>public <a href="../../../../org/apache/datasketches/tuple/CompactSketch.html" title="class in org.apache.datasketches.tuple">CompactSketch</a><<a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a>> union​(<a href="../../../../org/apache/datasketches/tuple/Sketch.html" title="class in org.apache.datasketches.tuple">Sketch</a><<a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a>> tupleSketchA, |
| <a href="../../../../org/apache/datasketches/tuple/Sketch.html" title="class in org.apache.datasketches.tuple">Sketch</a><<a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a>> tupleSketchB)</pre> |
| <div class="block">Perform a stateless, pair-wise union operation between two tuple sketches. |
| The returned sketch will be cutback to the smaller of the two k values if required. |
| |
| <p>Nulls and empty sketches are ignored.</p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>tupleSketchA</code> - The first argument</dd> |
| <dd><code>tupleSketchB</code> - The second argument</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the result ordered CompactSketch on the heap.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="union-org.apache.datasketches.tuple.Sketch-org.apache.datasketches.theta.Sketch-org.apache.datasketches.tuple.Summary-"> |
| <!-- --> |
| </a><a name="union-org.apache.datasketches.tuple.Sketch-org.apache.datasketches.theta.Sketch-S-"> |
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| <h4>union</h4> |
| <pre>public <a href="../../../../org/apache/datasketches/tuple/CompactSketch.html" title="class in org.apache.datasketches.tuple">CompactSketch</a><<a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a>> union​(<a href="../../../../org/apache/datasketches/tuple/Sketch.html" title="class in org.apache.datasketches.tuple">Sketch</a><<a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a>> tupleSketch, |
| <a href="../../../../org/apache/datasketches/theta/Sketch.html" title="class in org.apache.datasketches.theta">Sketch</a> thetaSketch, |
| <a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a> summary)</pre> |
| <div class="block">Perform a stateless, pair-wise union operation between a tupleSketch and a thetaSketch. |
| The returned sketch will be cutback to the smaller of the two k values if required. |
| |
| <p>Nulls and empty sketches are ignored.</p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>tupleSketch</code> - The first argument</dd> |
| <dd><code>thetaSketch</code> - The second argument</dd> |
| <dd><code>summary</code> - the given proxy summary for the theta sketch, which doesn't have one. |
| This may not be null.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the result ordered CompactSketch on the heap.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="union-org.apache.datasketches.tuple.Sketch-"> |
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| <h4>union</h4> |
| <pre>public void union​(<a href="../../../../org/apache/datasketches/tuple/Sketch.html" title="class in org.apache.datasketches.tuple">Sketch</a><<a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a>> tupleSketch)</pre> |
| <div class="block">Performs a stateful union of the internal set with the given tupleSketch.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>tupleSketch</code> - input tuple sketch to merge with the internal set. |
| |
| <p>Nulls and empty sketches are ignored.</p></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="union-org.apache.datasketches.theta.Sketch-org.apache.datasketches.tuple.Summary-"> |
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| </a><a name="union-org.apache.datasketches.theta.Sketch-S-"> |
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| <h4>union</h4> |
| <pre>public void union​(<a href="../../../../org/apache/datasketches/theta/Sketch.html" title="class in org.apache.datasketches.theta">Sketch</a> thetaSketch, |
| <a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a> summary)</pre> |
| <div class="block">Performs a stateful union of the internal set with the given thetaSketch by combining entries |
| using the hashes from the theta sketch and summary values from the given summary and rules |
| from the summarySetOps defined by the Union constructor.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>thetaSketch</code> - the given theta sketch input. If null or empty, it is ignored.</dd> |
| <dd><code>summary</code> - the given proxy summary for the theta sketch, which doesn't have one. This may |
| not be null.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getResult--"> |
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| <h4>getResult</h4> |
| <pre>public <a href="../../../../org/apache/datasketches/tuple/CompactSketch.html" title="class in org.apache.datasketches.tuple">CompactSketch</a><<a href="../../../../org/apache/datasketches/tuple/Union.html" title="type parameter in Union">S</a>> getResult​()</pre> |
| <div class="block">Gets the result of a sequence of stateful <i>union</i> operations as an unordered CompactSketch</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>result of the stateful unions so far</dd> |
| </dl> |
| </li> |
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| <h4>reset</h4> |
| <pre>public void reset​()</pre> |
| <div class="block">Resets the internal set to the initial state, which represents an empty set. This is only useful |
| after sequences of stateful union operations.</div> |
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