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| <div class="subTitle">com.yahoo.sketches.sampling</div> |
| <h2 title="Class VarOptItemsUnion" class="title">Class VarOptItemsUnion<T></h2> |
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| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
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| <li>com.yahoo.sketches.sampling.VarOptItemsUnion<T></li> |
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| <div class="description"> |
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| <dl> |
| <dt><span class="paramLabel">Type Parameters:</span></dt> |
| <dd><code>T</code> - Type of items</dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public final class <span class="typeNameLabel">VarOptItemsUnion<T></span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre> |
| <div class="block">Provides a unioning operation over varopt sketches. This union allows the sample size k to float, |
| possibly increasing or decreasing as warranted by the available data.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Author:</span></dt> |
| <dd>Jon Malkin, Kevin Lang</dd> |
| </dl> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../com/yahoo/sketches/sampling/VarOptItemsSketch.html" title="class in com.yahoo.sketches.sampling">VarOptItemsSketch</a><<a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html" title="type parameter in VarOptItemsUnion">T</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html#getResult--">getResult</a></span>()</code> |
| <div class="block">Gets the varopt sketch resulting from the union of any input sketches.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <T> <a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html" title="class in com.yahoo.sketches.sampling">VarOptItemsUnion</a><T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html#heapify-com.yahoo.memory.Memory-com.yahoo.sketches.ArrayOfItemsSerDe-">heapify</a></span>(com.yahoo.memory.Memory srcMem, |
| <a href="../../../../com/yahoo/sketches/ArrayOfItemsSerDe.html" title="class in com.yahoo.sketches">ArrayOfItemsSerDe</a><T> serDe)</code> |
| <div class="block">Instantiates a Union from Memory</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <T> <a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html" title="class in com.yahoo.sketches.sampling">VarOptItemsUnion</a><T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html#newInstance-int-">newInstance</a></span>(int maxK)</code> |
| <div class="block">Creates an empty Union with a maximum capacity of size k.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html#reset--">reset</a></span>()</code> |
| <div class="block">Resets this sketch to the empty state, but retains the original value of max k.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>byte[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html#toByteArray-com.yahoo.sketches.ArrayOfItemsSerDe-">toByteArray</a></span>(<a href="../../../../com/yahoo/sketches/ArrayOfItemsSerDe.html" title="class in com.yahoo.sketches">ArrayOfItemsSerDe</a><<a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html" title="type parameter in VarOptItemsUnion">T</a>> serDe)</code> |
| <div class="block">Returns a byte array representation of this union</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>byte[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html#toByteArray-com.yahoo.sketches.ArrayOfItemsSerDe-java.lang.Class-">toByteArray</a></span>(<a href="../../../../com/yahoo/sketches/ArrayOfItemsSerDe.html" title="class in com.yahoo.sketches">ArrayOfItemsSerDe</a><<a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html" title="type parameter in VarOptItemsUnion">T</a>> serDe, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><?> clazz)</code> |
| <div class="block">Returns a byte array representation of this union.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html#toString--">toString</a></span>()</code> |
| <div class="block">Returns a human-readable summary of the sketch, without items.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html#update-com.yahoo.memory.Memory-com.yahoo.sketches.ArrayOfItemsSerDe-">update</a></span>(com.yahoo.memory.Memory mem, |
| <a href="../../../../com/yahoo/sketches/ArrayOfItemsSerDe.html" title="class in com.yahoo.sketches">ArrayOfItemsSerDe</a><<a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html" title="type parameter in VarOptItemsUnion">T</a>> serDe)</code> |
| <div class="block">Union the given Memory image of the sketch.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html#update-com.yahoo.sketches.sampling.ReservoirItemsSketch-">update</a></span>(<a href="../../../../com/yahoo/sketches/sampling/ReservoirItemsSketch.html" title="class in com.yahoo.sketches.sampling">ReservoirItemsSketch</a><<a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html" title="type parameter in VarOptItemsUnion">T</a>> reservoirIn)</code> |
| <div class="block">Union a reservoir sketch.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html#update-com.yahoo.sketches.sampling.VarOptItemsSketch-">update</a></span>(<a href="../../../../com/yahoo/sketches/sampling/VarOptItemsSketch.html" title="class in com.yahoo.sketches.sampling">VarOptItemsSketch</a><<a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html" title="type parameter in VarOptItemsUnion">T</a>> sketchIn)</code> |
| <div class="block">Union the given sketch.</div> |
| </td> |
| </tr> |
| </table> |
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| <h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
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| <a name="newInstance-int-"> |
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| <h4>newInstance</h4> |
| <pre>public static <T> <a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html" title="class in com.yahoo.sketches.sampling">VarOptItemsUnion</a><T> newInstance(int maxK)</pre> |
| <div class="block">Creates an empty Union with a maximum capacity of size k.</div> |
| <dl> |
| <dt><span class="paramLabel">Type Parameters:</span></dt> |
| <dd><code>T</code> - The type of item this union contains</dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>maxK</code> - The maximum allowed capacity of the unioned result</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>A new VarOptItemsUnion</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="heapify-com.yahoo.memory.Memory-com.yahoo.sketches.ArrayOfItemsSerDe-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>heapify</h4> |
| <pre>public static <T> <a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html" title="class in com.yahoo.sketches.sampling">VarOptItemsUnion</a><T> heapify(com.yahoo.memory.Memory srcMem, |
| <a href="../../../../com/yahoo/sketches/ArrayOfItemsSerDe.html" title="class in com.yahoo.sketches">ArrayOfItemsSerDe</a><T> serDe)</pre> |
| <div class="block">Instantiates a Union from Memory</div> |
| <dl> |
| <dt><span class="paramLabel">Type Parameters:</span></dt> |
| <dd><code>T</code> - The type of item this sketch contains</dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>srcMem</code> - Memory object containing a serialized union</dd> |
| <dd><code>serDe</code> - An instance of ArrayOfItemsSerDe</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>A VarOptItemsUnion created from the provided Memory</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="update-com.yahoo.sketches.sampling.VarOptItemsSketch-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>update</h4> |
| <pre>public void update(<a href="../../../../com/yahoo/sketches/sampling/VarOptItemsSketch.html" title="class in com.yahoo.sketches.sampling">VarOptItemsSketch</a><<a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html" title="type parameter in VarOptItemsUnion">T</a>> sketchIn)</pre> |
| <div class="block">Union the given sketch. |
| |
| <p>This method can be repeatedly called.</p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>sketchIn</code> - The sketch to be merged</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="update-com.yahoo.memory.Memory-com.yahoo.sketches.ArrayOfItemsSerDe-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>update</h4> |
| <pre>public void update(com.yahoo.memory.Memory mem, |
| <a href="../../../../com/yahoo/sketches/ArrayOfItemsSerDe.html" title="class in com.yahoo.sketches">ArrayOfItemsSerDe</a><<a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html" title="type parameter in VarOptItemsUnion">T</a>> serDe)</pre> |
| <div class="block">Union the given Memory image of the sketch. |
| |
| <p>This method can be repeatedly called.</p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>mem</code> - Memory image of sketch to be merged</dd> |
| <dd><code>serDe</code> - An instance of ArrayOfItemsSerDe</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="update-com.yahoo.sketches.sampling.ReservoirItemsSketch-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>update</h4> |
| <pre>public void update(<a href="../../../../com/yahoo/sketches/sampling/ReservoirItemsSketch.html" title="class in com.yahoo.sketches.sampling">ReservoirItemsSketch</a><<a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html" title="type parameter in VarOptItemsUnion">T</a>> reservoirIn)</pre> |
| <div class="block">Union a reservoir sketch. The reservoir sample is treated as if all items were added with a |
| weight of 1.0.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>reservoirIn</code> - The reservoir sketch to be merged</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getResult--"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>getResult</h4> |
| <pre>public <a href="../../../../com/yahoo/sketches/sampling/VarOptItemsSketch.html" title="class in com.yahoo.sketches.sampling">VarOptItemsSketch</a><<a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html" title="type parameter in VarOptItemsUnion">T</a>> getResult()</pre> |
| <div class="block">Gets the varopt sketch resulting from the union of any input sketches.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>A varopt sketch</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="reset--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>reset</h4> |
| <pre>public void reset()</pre> |
| <div class="block">Resets this sketch to the empty state, but retains the original value of max k.</div> |
| </li> |
| </ul> |
| <a name="toString--"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>toString</h4> |
| <pre>public <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> toString()</pre> |
| <div class="block">Returns a human-readable summary of the sketch, without items.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a></code> in class <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>A string version of the sketch summary</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="toByteArray-com.yahoo.sketches.ArrayOfItemsSerDe-"> |
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| </a> |
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| <h4>toByteArray</h4> |
| <pre>public byte[] toByteArray(<a href="../../../../com/yahoo/sketches/ArrayOfItemsSerDe.html" title="class in com.yahoo.sketches">ArrayOfItemsSerDe</a><<a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html" title="type parameter in VarOptItemsUnion">T</a>> serDe)</pre> |
| <div class="block">Returns a byte array representation of this union</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>serDe</code> - An instance of ArrayOfItemsSerDe</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a byte array representation of this union</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="toByteArray-com.yahoo.sketches.ArrayOfItemsSerDe-java.lang.Class-"> |
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| </a> |
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| <h4>toByteArray</h4> |
| <pre>public byte[] toByteArray(<a href="../../../../com/yahoo/sketches/ArrayOfItemsSerDe.html" title="class in com.yahoo.sketches">ArrayOfItemsSerDe</a><<a href="../../../../com/yahoo/sketches/sampling/VarOptItemsUnion.html" title="type parameter in VarOptItemsUnion">T</a>> serDe, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><?> clazz)</pre> |
| <div class="block">Returns a byte array representation of this union. This method should be used when the array |
| elements are subclasses of a common base class.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>serDe</code> - An instance of ArrayOfItemsSerDe</dd> |
| <dd><code>clazz</code> - A class to which the items are cast before serialization</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
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