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| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.storm.streams</a></div> |
| <h1 title="Class PairStream" class="title">Class PairStream<K,<wbr>V></h1> |
| </div> |
| <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a> |
| <div class="inheritance"><a href="Stream.html" title="class in org.apache.storm.streams">org.apache.storm.streams.Stream</a><<a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><K,<wbr>V>> |
| <div class="inheritance">org.apache.storm.streams.PairStream<K,<wbr>V></div> |
| </div> |
| </div> |
| <section class="class-description" id="class-description"> |
| <dl class="notes"> |
| <dt>Type Parameters:</dt> |
| <dd><code>K</code> - the key type</dd> |
| <dd><code>V</code> - the value type</dd> |
| </dl> |
| <hr> |
| <div class="type-signature"><span class="annotations"><a href="../annotation/InterfaceStability.Unstable.html" title="annotation in org.apache.storm.annotation">@Unstable</a> |
| </span><span class="modifiers">public class </span><span class="element-name type-name-label">PairStream<K,<wbr>V></span> |
| <span class="extends-implements">extends <a href="Stream.html" title="class in org.apache.storm.streams">Stream</a><<a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><K,<wbr>V>></span></div> |
| <div class="block">Represents a stream of key-value pairs.</div> |
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| <h2>Field Summary</h2> |
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| <h3 id="fields-inherited-from-class-org.apache.storm.streams.Stream">Fields inherited from class org.apache.storm.streams.<a href="Stream.html" title="class in org.apache.storm.streams">Stream</a></h3> |
| <code><a href="Stream.html#KEY">KEY</a>, <a href="Stream.html#KEY_VALUE">KEY_VALUE</a>, <a href="Stream.html#node">node</a>, <a href="Stream.html#stream">stream</a>, <a href="Stream.html#streamBuilder">streamBuilder</a>, <a href="Stream.html#VALUE">VALUE</a></code></div> |
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| <h2>Method Summary</h2> |
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| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Method</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><A,<wbr> |
| R> <a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#aggregateByKey(org.apache.storm.streams.operations.CombinerAggregator)" class="member-name-link">aggregateByKey</a><wbr>(<a href="operations/CombinerAggregator.html" title="interface in org.apache.storm.streams.operations">CombinerAggregator</a><? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>A,<wbr>? extends R> aggregator)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Aggregates the values for each key of this stream using the given <a href="operations/CombinerAggregator.html" title="interface in org.apache.storm.streams.operations"><code>CombinerAggregator</code></a>.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><R> <a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#aggregateByKey(R,org.apache.storm.streams.operations.BiFunction,org.apache.storm.streams.operations.BiFunction)" class="member-name-link">aggregateByKey</a><wbr>(R initialValue, |
| <a href="operations/BiFunction.html" title="interface in org.apache.storm.streams.operations">BiFunction</a><? super R,<wbr>? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>? extends R> accumulator, |
| <a href="operations/BiFunction.html" title="interface in org.apache.storm.streams.operations">BiFunction</a><? super R,<wbr>? super R,<wbr>? extends R> combiner)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Aggregates the values for each key of this stream using the given initial value, accumulator and combiner.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>>[]</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#branch(org.apache.storm.streams.operations.Predicate...)" class="member-name-link">branch</a><wbr>(<a href="operations/Predicate.html" title="interface in org.apache.storm.streams.operations">Predicate</a><? super <a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>>>... predicates)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Returns an array of streams by splitting the given stream into multiple branches based on the given predicates.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><V1> <a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Iterable.html" title="class or interface in java.lang" class="external-link">Iterable</a><<a href="PairStream.html" title="type parameter in PairStream">V</a>>,<wbr><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Iterable.html" title="class or interface in java.lang" class="external-link">Iterable</a><V1>>></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#coGroupByKey(org.apache.storm.streams.PairStream)" class="member-name-link">coGroupByKey</a><wbr>(<a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>V1> otherStream)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Groups the values of this stream with the values having the same key from the other stream.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Long.html" title="class or interface in java.lang" class="external-link">Long</a>></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#countByKey()" class="member-name-link">countByKey</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Counts the values for each key of this stream.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#filter(org.apache.storm.streams.operations.Predicate)" class="member-name-link">filter</a><wbr>(<a href="operations/Predicate.html" title="interface in org.apache.storm.streams.operations">Predicate</a><? super <a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>>> predicate)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Returns a stream consisting of the elements of this stream that matches the given filter.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><R> <a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#flatMapValues(org.apache.storm.streams.operations.FlatMapFunction)" class="member-name-link">flatMapValues</a><wbr>(<a href="operations/FlatMapFunction.html" title="interface in org.apache.storm.streams.operations">FlatMapFunction</a><? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>? extends R> function)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Return a new stream by applying a <a href="operations/FlatMapFunction.html" title="interface in org.apache.storm.streams.operations"><code>FlatMapFunction</code></a> function to the value of each key-value pairs in this stream.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><V1> <a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>V1>></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#fullOuterJoin(org.apache.storm.streams.PairStream)" class="member-name-link">fullOuterJoin</a><wbr>(<a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>V1> otherStream)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Does a full outer join of the values of this stream with the values having the same key from the other stream.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><R,<wbr> |
| V1> <a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#fullOuterJoin(org.apache.storm.streams.PairStream,org.apache.storm.streams.operations.ValueJoiner)" class="member-name-link">fullOuterJoin</a><wbr>(<a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>V1> otherStream, |
| <a href="operations/ValueJoiner.html" title="interface in org.apache.storm.streams.operations">ValueJoiner</a><? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>? super V1,<wbr>? extends R> valueJoiner)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Does a full outer join of the values of this stream with the values having the same key from the other stream.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Iterable.html" title="class or interface in java.lang" class="external-link">Iterable</a><<a href="PairStream.html" title="type parameter in PairStream">V</a>>></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#groupByKey()" class="member-name-link">groupByKey</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Returns a new stream where the values are grouped by the keys.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Iterable.html" title="class or interface in java.lang" class="external-link">Iterable</a><<a href="PairStream.html" title="type parameter in PairStream">V</a>>></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#groupByKeyAndWindow(org.apache.storm.streams.windowing.Window)" class="member-name-link">groupByKeyAndWindow</a><wbr>(<a href="windowing/Window.html" title="interface in org.apache.storm.streams.windowing">Window</a><?,<wbr>?> window)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Returns a new stream where the values are grouped by keys and the given window.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><V1> <a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>V1>></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#join(org.apache.storm.streams.PairStream)" class="member-name-link">join</a><wbr>(<a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>V1> otherStream)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Join the values of this stream with the values having the same key from the other stream.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><R,<wbr> |
| V1> <a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#join(org.apache.storm.streams.PairStream,org.apache.storm.streams.operations.ValueJoiner)" class="member-name-link">join</a><wbr>(<a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>V1> otherStream, |
| <a href="operations/ValueJoiner.html" title="interface in org.apache.storm.streams.operations">ValueJoiner</a><? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>? super V1,<wbr>? extends R> valueJoiner)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Join the values of this stream with the values having the same key from the other stream.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><V1> <a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>V1>></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#leftOuterJoin(org.apache.storm.streams.PairStream)" class="member-name-link">leftOuterJoin</a><wbr>(<a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>V1> otherStream)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Does a left outer join of the values of this stream with the values having the same key from the other stream.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><R,<wbr> |
| V1> <a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#leftOuterJoin(org.apache.storm.streams.PairStream,org.apache.storm.streams.operations.ValueJoiner)" class="member-name-link">leftOuterJoin</a><wbr>(<a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>V1> otherStream, |
| <a href="operations/ValueJoiner.html" title="interface in org.apache.storm.streams.operations">ValueJoiner</a><? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>? super V1,<wbr>? extends R> valueJoiner)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Does a left outer join of the values of this stream with the values having the same key from the other stream.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><R> <a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#mapValues(org.apache.storm.streams.operations.Function)" class="member-name-link">mapValues</a><wbr>(<a href="operations/Function.html" title="interface in org.apache.storm.streams.operations">Function</a><? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>? extends R> function)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Returns a new stream by applying a <a href="operations/Function.html" title="interface in org.apache.storm.streams.operations"><code>Function</code></a> to the value of each key-value pairs in this stream.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#peek(org.apache.storm.streams.operations.Consumer)" class="member-name-link">peek</a><wbr>(<a href="operations/Consumer.html" title="interface in org.apache.storm.streams.operations">Consumer</a><? super <a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>>> action)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Returns a stream consisting of the elements of this stream, additionally performing the provided action on each element as they are |
| consumed from the resulting stream.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#reduceByKey(org.apache.storm.streams.operations.Reducer)" class="member-name-link">reduceByKey</a><wbr>(<a href="operations/Reducer.html" title="interface in org.apache.storm.streams.operations">Reducer</a><<a href="PairStream.html" title="type parameter in PairStream">V</a>> reducer)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Performs a reduction on the values for each key of this stream by repeatedly applying the reducer.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#reduceByKeyAndWindow(org.apache.storm.streams.operations.Reducer,org.apache.storm.streams.windowing.Window)" class="member-name-link">reduceByKeyAndWindow</a><wbr>(<a href="operations/Reducer.html" title="interface in org.apache.storm.streams.operations">Reducer</a><<a href="PairStream.html" title="type parameter in PairStream">V</a>> reducer, |
| <a href="windowing/Window.html" title="interface in org.apache.storm.streams.windowing">Window</a><?,<wbr>?> window)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Returns a new stream where the values that arrive within a window having the same key will be reduced by repeatedly applying the |
| reducer.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#repartition(int)" class="member-name-link">repartition</a><wbr>(int parallelism)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Returns a new stream with the given value of parallelism.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><V1> <a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>V1>></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#rightOuterJoin(org.apache.storm.streams.PairStream)" class="member-name-link">rightOuterJoin</a><wbr>(<a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>V1> otherStream)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Does a right outer join of the values of this stream with the values having the same key from the other stream.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><R,<wbr> |
| V1> <a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#rightOuterJoin(org.apache.storm.streams.PairStream,org.apache.storm.streams.operations.ValueJoiner)" class="member-name-link">rightOuterJoin</a><wbr>(<a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>V1> otherStream, |
| <a href="operations/ValueJoiner.html" title="interface in org.apache.storm.streams.operations">ValueJoiner</a><? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>? super V1,<wbr>? extends R> valueJoiner)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Does a right outer join of the values of this stream with the values having the same key from the other stream.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><R> <a href="StreamState.html" title="class in org.apache.storm.streams">StreamState</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#updateStateByKey(org.apache.storm.streams.operations.StateUpdater)" class="member-name-link">updateStateByKey</a><wbr>(<a href="operations/StateUpdater.html" title="interface in org.apache.storm.streams.operations">StateUpdater</a><? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>? extends R> stateUpdater)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Update the state by applying the given state update function to the previous state of the key and the new value for the key.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><R> <a href="StreamState.html" title="class in org.apache.storm.streams">StreamState</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#updateStateByKey(R,org.apache.storm.streams.operations.BiFunction)" class="member-name-link">updateStateByKey</a><wbr>(R initialValue, |
| <a href="operations/BiFunction.html" title="interface in org.apache.storm.streams.operations">BiFunction</a><? super R,<wbr>? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>? extends R> stateUpdateFn)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Update the state by applying the given state update function to the previous state of the key and the new value for the key.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#window(org.apache.storm.streams.windowing.Window)" class="member-name-link">window</a><wbr>(<a href="windowing/Window.html" title="interface in org.apache.storm.streams.windowing">Window</a><?,<wbr>?> window)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Returns a new stream consisting of the elements that fall within the window as specified by the window parameter.</div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-org.apache.storm.streams.Stream">Methods inherited from class org.apache.storm.streams.<a href="Stream.html" title="class in org.apache.storm.streams">Stream</a></h3> |
| <code><a href="Stream.html#aggregate(org.apache.storm.streams.operations.CombinerAggregator)">aggregate</a>, <a href="Stream.html#aggregate(R,org.apache.storm.streams.operations.BiFunction,org.apache.storm.streams.operations.BiFunction)">aggregate</a>, <a href="Stream.html#count()">count</a>, <a href="Stream.html#flatMap(org.apache.storm.streams.operations.FlatMapFunction)">flatMap</a>, <a href="Stream.html#flatMapToPair(org.apache.storm.streams.operations.PairFlatMapFunction)">flatMapToPair</a>, <a href="Stream.html#forEach(org.apache.storm.streams.operations.Consumer)">forEach</a>, <a href="Stream.html#map(org.apache.storm.streams.operations.Function)">map</a>, <a href="Stream.html#mapToPair(org.apache.storm.streams.operations.PairFunction)">mapToPair</a>, <a href="Stream.html#partitionBy(org.apache.storm.tuple.Fields,int)">partitionBy</a>, <a href="Stream.html#print()">print</a>, <a href="Stream.html#reduce(org.apache.storm.streams.operations.Reducer)">reduce</a>, <a href="Stream.html#stateQuery(org.apache.storm.streams.StreamState)">stateQuery</a>, <a href="Stream.html#to(org.apache.storm.topology.IBasicBolt)">to</a>, <a href="Stream.html#to(org.apache.storm.topology.IBasicBolt,int)">to</a>, <a href="Stream.html#to(org.apache.storm.topology.IRichBolt)">to</a>, <a href="Stream.html#to(org.apache.storm.topology.IRichBolt,int)">to</a></code></div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class java.lang.<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3> |
| <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link">toString</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li> |
| <section class="method-details" id="method-detail"> |
| <h2>Method Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="mapValues(org.apache.storm.streams.operations.Function)"> |
| <h3>mapValues</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="type-parameters"><R></span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></span> <span class="element-name">mapValues</span><wbr><span class="parameters">(<a href="operations/Function.html" title="interface in org.apache.storm.streams.operations">Function</a><? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>? extends R> function)</span></div> |
| <div class="block">Returns a new stream by applying a <a href="operations/Function.html" title="interface in org.apache.storm.streams.operations"><code>Function</code></a> to the value of each key-value pairs in this stream.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>function</code> - the mapping function</dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="flatMapValues(org.apache.storm.streams.operations.FlatMapFunction)"> |
| <h3>flatMapValues</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="type-parameters"><R></span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></span> <span class="element-name">flatMapValues</span><wbr><span class="parameters">(<a href="operations/FlatMapFunction.html" title="interface in org.apache.storm.streams.operations">FlatMapFunction</a><? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>? extends R> function)</span></div> |
| <div class="block">Return a new stream by applying a <a href="operations/FlatMapFunction.html" title="interface in org.apache.storm.streams.operations"><code>FlatMapFunction</code></a> function to the value of each key-value pairs in this stream.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>function</code> - the flatmap function</dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="aggregateByKey(R,org.apache.storm.streams.operations.BiFunction,org.apache.storm.streams.operations.BiFunction)"> |
| <h3 id="aggregateByKey(java.lang.Object,org.apache.storm.streams.operations.BiFunction,org.apache.storm.streams.operations.BiFunction)">aggregateByKey</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="type-parameters"><R></span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></span> <span class="element-name">aggregateByKey</span><wbr><span class="parameters">(R initialValue, |
| <a href="operations/BiFunction.html" title="interface in org.apache.storm.streams.operations">BiFunction</a><? super R,<wbr>? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>? extends R> accumulator, |
| <a href="operations/BiFunction.html" title="interface in org.apache.storm.streams.operations">BiFunction</a><? super R,<wbr>? super R,<wbr>? extends R> combiner)</span></div> |
| <div class="block">Aggregates the values for each key of this stream using the given initial value, accumulator and combiner.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>initialValue</code> - the initial value of the result</dd> |
| <dd><code>accumulator</code> - the accumulator</dd> |
| <dd><code>combiner</code> - the combiner</dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="aggregateByKey(org.apache.storm.streams.operations.CombinerAggregator)"> |
| <h3>aggregateByKey</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="type-parameters"><A,<wbr> |
| R></span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></span> <span class="element-name">aggregateByKey</span><wbr><span class="parameters">(<a href="operations/CombinerAggregator.html" title="interface in org.apache.storm.streams.operations">CombinerAggregator</a><? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>A,<wbr>? extends R> aggregator)</span></div> |
| <div class="block">Aggregates the values for each key of this stream using the given <a href="operations/CombinerAggregator.html" title="interface in org.apache.storm.streams.operations"><code>CombinerAggregator</code></a>.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>aggregator</code> - the combiner aggregator</dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="countByKey()"> |
| <h3>countByKey</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Long.html" title="class or interface in java.lang" class="external-link">Long</a>></span> <span class="element-name">countByKey</span>()</div> |
| <div class="block">Counts the values for each key of this stream.</div> |
| <dl class="notes"> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="reduceByKey(org.apache.storm.streams.operations.Reducer)"> |
| <h3>reduceByKey</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>></span> <span class="element-name">reduceByKey</span><wbr><span class="parameters">(<a href="operations/Reducer.html" title="interface in org.apache.storm.streams.operations">Reducer</a><<a href="PairStream.html" title="type parameter in PairStream">V</a>> reducer)</span></div> |
| <div class="block">Performs a reduction on the values for each key of this stream by repeatedly applying the reducer.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>reducer</code> - the reducer</dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="groupByKey()"> |
| <h3>groupByKey</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Iterable.html" title="class or interface in java.lang" class="external-link">Iterable</a><<a href="PairStream.html" title="type parameter in PairStream">V</a>>></span> <span class="element-name">groupByKey</span>()</div> |
| <div class="block">Returns a new stream where the values are grouped by the keys.</div> |
| <dl class="notes"> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="groupByKeyAndWindow(org.apache.storm.streams.windowing.Window)"> |
| <h3>groupByKeyAndWindow</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Iterable.html" title="class or interface in java.lang" class="external-link">Iterable</a><<a href="PairStream.html" title="type parameter in PairStream">V</a>>></span> <span class="element-name">groupByKeyAndWindow</span><wbr><span class="parameters">(<a href="windowing/Window.html" title="interface in org.apache.storm.streams.windowing">Window</a><?,<wbr>?> window)</span></div> |
| <div class="block">Returns a new stream where the values are grouped by keys and the given window. The values that arrive within a window having the |
| same key will be merged together and returned as an Iterable of values mapped to the key.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>window</code> - the window configuration</dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="reduceByKeyAndWindow(org.apache.storm.streams.operations.Reducer,org.apache.storm.streams.windowing.Window)"> |
| <h3>reduceByKeyAndWindow</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>></span> <span class="element-name">reduceByKeyAndWindow</span><wbr><span class="parameters">(<a href="operations/Reducer.html" title="interface in org.apache.storm.streams.operations">Reducer</a><<a href="PairStream.html" title="type parameter in PairStream">V</a>> reducer, |
| <a href="windowing/Window.html" title="interface in org.apache.storm.streams.windowing">Window</a><?,<wbr>?> window)</span></div> |
| <div class="block">Returns a new stream where the values that arrive within a window having the same key will be reduced by repeatedly applying the |
| reducer.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>reducer</code> - the reducer</dd> |
| <dd><code>window</code> - the window configuration</dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="peek(org.apache.storm.streams.operations.Consumer)"> |
| <h3>peek</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>></span> <span class="element-name">peek</span><wbr><span class="parameters">(<a href="operations/Consumer.html" title="interface in org.apache.storm.streams.operations">Consumer</a><? super <a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>>> action)</span></div> |
| <div class="block">Returns a stream consisting of the elements of this stream, additionally performing the provided action on each element as they are |
| consumed from the resulting stream.</div> |
| <dl class="notes"> |
| <dt>Overrides:</dt> |
| <dd><code><a href="Stream.html#peek(org.apache.storm.streams.operations.Consumer)">peek</a></code> in class <code><a href="Stream.html" title="class in org.apache.storm.streams">Stream</a><<a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>>></code></dd> |
| <dt>Parameters:</dt> |
| <dd><code>action</code> - the action to perform on the element as they are consumed from the stream</dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="filter(org.apache.storm.streams.operations.Predicate)"> |
| <h3>filter</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>></span> <span class="element-name">filter</span><wbr><span class="parameters">(<a href="operations/Predicate.html" title="interface in org.apache.storm.streams.operations">Predicate</a><? super <a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>>> predicate)</span></div> |
| <div class="block">Returns a stream consisting of the elements of this stream that matches the given filter.</div> |
| <dl class="notes"> |
| <dt>Overrides:</dt> |
| <dd><code><a href="Stream.html#filter(org.apache.storm.streams.operations.Predicate)">filter</a></code> in class <code><a href="Stream.html" title="class in org.apache.storm.streams">Stream</a><<a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>>></code></dd> |
| <dt>Parameters:</dt> |
| <dd><code>predicate</code> - the predicate to apply to each element to determine if it should be included</dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="join(org.apache.storm.streams.PairStream)"> |
| <h3>join</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="type-parameters"><V1></span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>V1>></span> <span class="element-name">join</span><wbr><span class="parameters">(<a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>V1> otherStream)</span></div> |
| <div class="block">Join the values of this stream with the values having the same key from the other stream. |
| <p> |
| Note: The parallelism of this stream is carried forward to the joined stream. |
| </p></div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>otherStream</code> - the other stream</dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="join(org.apache.storm.streams.PairStream,org.apache.storm.streams.operations.ValueJoiner)"> |
| <h3>join</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="type-parameters"><R,<wbr> |
| V1></span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></span> <span class="element-name">join</span><wbr><span class="parameters">(<a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>V1> otherStream, |
| <a href="operations/ValueJoiner.html" title="interface in org.apache.storm.streams.operations">ValueJoiner</a><? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>? super V1,<wbr>? extends R> valueJoiner)</span></div> |
| <div class="block">Join the values of this stream with the values having the same key from the other stream. |
| <p> |
| Note: The parallelism of this stream is carried forward to the joined stream. |
| </p></div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>otherStream</code> - the other stream</dd> |
| <dd><code>valueJoiner</code> - the <a href="operations/ValueJoiner.html" title="interface in org.apache.storm.streams.operations"><code>ValueJoiner</code></a></dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="leftOuterJoin(org.apache.storm.streams.PairStream)"> |
| <h3>leftOuterJoin</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="type-parameters"><V1></span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>V1>></span> <span class="element-name">leftOuterJoin</span><wbr><span class="parameters">(<a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>V1> otherStream)</span></div> |
| <div class="block">Does a left outer join of the values of this stream with the values having the same key from the other stream. |
| <p> |
| Note: The parallelism of this stream is carried forward to the joined stream. |
| </p></div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>otherStream</code> - the other stream</dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="leftOuterJoin(org.apache.storm.streams.PairStream,org.apache.storm.streams.operations.ValueJoiner)"> |
| <h3>leftOuterJoin</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="type-parameters"><R,<wbr> |
| V1></span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></span> <span class="element-name">leftOuterJoin</span><wbr><span class="parameters">(<a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>V1> otherStream, |
| <a href="operations/ValueJoiner.html" title="interface in org.apache.storm.streams.operations">ValueJoiner</a><? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>? super V1,<wbr>? extends R> valueJoiner)</span></div> |
| <div class="block">Does a left outer join of the values of this stream with the values having the same key from the other stream. |
| <p> |
| Note: The parallelism of this stream is carried forward to the joined stream. |
| </p></div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>otherStream</code> - the other stream</dd> |
| <dd><code>valueJoiner</code> - the <a href="operations/ValueJoiner.html" title="interface in org.apache.storm.streams.operations"><code>ValueJoiner</code></a></dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="rightOuterJoin(org.apache.storm.streams.PairStream)"> |
| <h3>rightOuterJoin</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="type-parameters"><V1></span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>V1>></span> <span class="element-name">rightOuterJoin</span><wbr><span class="parameters">(<a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>V1> otherStream)</span></div> |
| <div class="block">Does a right outer join of the values of this stream with the values having the same key from the other stream. |
| <p> |
| Note: The parallelism of this stream is carried forward to the joined stream. |
| </p></div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>otherStream</code> - the other stream</dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="rightOuterJoin(org.apache.storm.streams.PairStream,org.apache.storm.streams.operations.ValueJoiner)"> |
| <h3>rightOuterJoin</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="type-parameters"><R,<wbr> |
| V1></span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></span> <span class="element-name">rightOuterJoin</span><wbr><span class="parameters">(<a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>V1> otherStream, |
| <a href="operations/ValueJoiner.html" title="interface in org.apache.storm.streams.operations">ValueJoiner</a><? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>? super V1,<wbr>? extends R> valueJoiner)</span></div> |
| <div class="block">Does a right outer join of the values of this stream with the values having the same key from the other stream. |
| <p> |
| Note: The parallelism of this stream is carried forward to the joined stream. |
| </p></div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>otherStream</code> - the other stream</dd> |
| <dd><code>valueJoiner</code> - the <a href="operations/ValueJoiner.html" title="interface in org.apache.storm.streams.operations"><code>ValueJoiner</code></a></dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="fullOuterJoin(org.apache.storm.streams.PairStream)"> |
| <h3>fullOuterJoin</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="type-parameters"><V1></span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>V1>></span> <span class="element-name">fullOuterJoin</span><wbr><span class="parameters">(<a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>V1> otherStream)</span></div> |
| <div class="block">Does a full outer join of the values of this stream with the values having the same key from the other stream. |
| <p> |
| Note: The parallelism of this stream is carried forward to the joined stream. |
| </p></div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>otherStream</code> - the other stream</dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="fullOuterJoin(org.apache.storm.streams.PairStream,org.apache.storm.streams.operations.ValueJoiner)"> |
| <h3>fullOuterJoin</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="type-parameters"><R,<wbr> |
| V1></span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></span> <span class="element-name">fullOuterJoin</span><wbr><span class="parameters">(<a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>V1> otherStream, |
| <a href="operations/ValueJoiner.html" title="interface in org.apache.storm.streams.operations">ValueJoiner</a><? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>? super V1,<wbr>? extends R> valueJoiner)</span></div> |
| <div class="block">Does a full outer join of the values of this stream with the values having the same key from the other stream. |
| <p> |
| Note: The parallelism of this stream is carried forward to the joined stream. |
| </p></div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>otherStream</code> - the other stream</dd> |
| <dd><code>valueJoiner</code> - the <a href="operations/ValueJoiner.html" title="interface in org.apache.storm.streams.operations"><code>ValueJoiner</code></a></dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="window(org.apache.storm.streams.windowing.Window)"> |
| <h3>window</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>></span> <span class="element-name">window</span><wbr><span class="parameters">(<a href="windowing/Window.html" title="interface in org.apache.storm.streams.windowing">Window</a><?,<wbr>?> window)</span></div> |
| <div class="block">Returns a new stream consisting of the elements that fall within the window as specified by the window parameter. The <a href="windowing/Window.html" title="interface in org.apache.storm.streams.windowing"><code>Window</code></a> |
| specification could be used to specify sliding or tumbling windows based on time duration or event count. For example, |
| <pre> |
| // time duration based sliding window |
| stream.window(SlidingWindows.of(Duration.minutes(10), Duration.minutes(1)); |
| |
| // count based sliding window |
| stream.window(SlidingWindows.of(Count.(10), Count.of(2))); |
| |
| // time duration based tumbling window |
| stream.window(TumblingWindows.of(Duration.seconds(10)); |
| </pre></div> |
| <dl class="notes"> |
| <dt>Overrides:</dt> |
| <dd><code><a href="Stream.html#window(org.apache.storm.streams.windowing.Window)">window</a></code> in class <code><a href="Stream.html" title="class in org.apache.storm.streams">Stream</a><<a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>>></code></dd> |
| <dt>Parameters:</dt> |
| <dd><code>window</code> - the window configuration</dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| <dt>See Also:</dt> |
| <dd> |
| <ul class="see-list"> |
| <li><a href="windowing/SlidingWindows.html" title="class in org.apache.storm.streams.windowing"><code>SlidingWindows</code></a></li> |
| <li><a href="windowing/TumblingWindows.html" title="class in org.apache.storm.streams.windowing"><code>TumblingWindows</code></a></li> |
| </ul> |
| </dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="repartition(int)"> |
| <h3>repartition</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>></span> <span class="element-name">repartition</span><wbr><span class="parameters">(int parallelism)</span></div> |
| <div class="block">Returns a new stream with the given value of parallelism. Further operations on this stream would execute at this level of |
| parallelism.</div> |
| <dl class="notes"> |
| <dt>Overrides:</dt> |
| <dd><code><a href="Stream.html#repartition(int)">repartition</a></code> in class <code><a href="Stream.html" title="class in org.apache.storm.streams">Stream</a><<a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>>></code></dd> |
| <dt>Parameters:</dt> |
| <dd><code>parallelism</code> - the parallelism value</dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="branch(org.apache.storm.streams.operations.Predicate...)"> |
| <h3>branch</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>>[]</span> <span class="element-name">branch</span><wbr><span class="parameters">(<a href="operations/Predicate.html" title="interface in org.apache.storm.streams.operations">Predicate</a><? super <a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>>>... predicates)</span></div> |
| <div class="block">Returns an array of streams by splitting the given stream into multiple branches based on the given predicates. The predicates are |
| applied in the given order to the values of this stream and the result is forwarded to the corresponding (index based) result stream |
| based on the (index of) predicate that matches. |
| <p> |
| <b>Note:</b> If none of the predicates match a value, that value is dropped. |
| </p></div> |
| <dl class="notes"> |
| <dt>Overrides:</dt> |
| <dd><code><a href="Stream.html#branch(org.apache.storm.streams.operations.Predicate...)">branch</a></code> in class <code><a href="Stream.html" title="class in org.apache.storm.streams">Stream</a><<a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="PairStream.html" title="type parameter in PairStream">V</a>>></code></dd> |
| <dt>Parameters:</dt> |
| <dd><code>predicates</code> - the predicates</dd> |
| <dt>Returns:</dt> |
| <dd>an array of result streams (branches) corresponding to the given predicates</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="updateStateByKey(R,org.apache.storm.streams.operations.BiFunction)"> |
| <h3 id="updateStateByKey(java.lang.Object,org.apache.storm.streams.operations.BiFunction)">updateStateByKey</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="type-parameters"><R></span> <span class="return-type"><a href="StreamState.html" title="class in org.apache.storm.streams">StreamState</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></span> <span class="element-name">updateStateByKey</span><wbr><span class="parameters">(R initialValue, |
| <a href="operations/BiFunction.html" title="interface in org.apache.storm.streams.operations">BiFunction</a><? super R,<wbr>? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>? extends R> stateUpdateFn)</span></div> |
| <div class="block">Update the state by applying the given state update function to the previous state of the key and the new value for the key. This |
| internally uses <a href="../topology/IStatefulBolt.html" title="interface in org.apache.storm.topology"><code>IStatefulBolt</code></a> to save the state. Use <a href="../Config.html#TOPOLOGY_STATE_PROVIDER"><code>Config.TOPOLOGY_STATE_PROVIDER</code></a> to |
| choose the state implementation.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>stateUpdateFn</code> - the state update function</dd> |
| <dt>Returns:</dt> |
| <dd>the <a href="StreamState.html" title="class in org.apache.storm.streams"><code>StreamState</code></a> which can be used to query the state</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="updateStateByKey(org.apache.storm.streams.operations.StateUpdater)"> |
| <h3>updateStateByKey</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="type-parameters"><R></span> <span class="return-type"><a href="StreamState.html" title="class in org.apache.storm.streams">StreamState</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>R></span> <span class="element-name">updateStateByKey</span><wbr><span class="parameters">(<a href="operations/StateUpdater.html" title="interface in org.apache.storm.streams.operations">StateUpdater</a><? super <a href="PairStream.html" title="type parameter in PairStream">V</a>,<wbr>? extends R> stateUpdater)</span></div> |
| <div class="block">Update the state by applying the given state update function to the previous state of the key and the new value for the key. This |
| internally uses <a href="../topology/IStatefulBolt.html" title="interface in org.apache.storm.topology"><code>IStatefulBolt</code></a> to save the state. Use <a href="../Config.html#TOPOLOGY_STATE_PROVIDER"><code>Config.TOPOLOGY_STATE_PROVIDER</code></a> to |
| choose the state implementation.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>stateUpdater</code> - the state updater</dd> |
| <dt>Returns:</dt> |
| <dd>the <a href="StreamState.html" title="class in org.apache.storm.streams"><code>StreamState</code></a> which can be used to query the state</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="coGroupByKey(org.apache.storm.streams.PairStream)"> |
| <h3>coGroupByKey</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="type-parameters"><V1></span> |
| <span class="return-type"><a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr><a href="Pair.html" title="class in org.apache.storm.streams">Pair</a><<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Iterable.html" title="class or interface in java.lang" class="external-link">Iterable</a><<a href="PairStream.html" title="type parameter in PairStream">V</a>>,<wbr><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Iterable.html" title="class or interface in java.lang" class="external-link">Iterable</a><V1>>></span> <span class="element-name">coGroupByKey</span><wbr><span class="parameters">(<a href="PairStream.html" title="class in org.apache.storm.streams">PairStream</a><<a href="PairStream.html" title="type parameter in PairStream">K</a>,<wbr>V1> otherStream)</span></div> |
| <div class="block">Groups the values of this stream with the values having the same key from the other stream. |
| <p> |
| If stream1 has values - (k1, v1), (k2, v2), (k2, v3) <br/> and stream2 has values - (k1, x1), (k1, x2), (k3, x3) <br/> The the |
| co-grouped stream would contain - (k1, ([v1], [x1, x2]), (k2, ([v2, v3], [])), (k3, ([], [x3])) |
| </p> |
| <p> |
| Note: The parallelism of this stream is carried forward to the co-grouped stream. |
| </p></div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>otherStream</code> - the other stream</dd> |
| <dt>Returns:</dt> |
| <dd>the new stream</dd> |
| </dl> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </section> |
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