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org.apache.beam.runners.core">org.apache.beam.runners.core.ReduceFn</a><K,InputT,OutputT,W></li> +<li> +<ul class="inheritance"> +<li>org.apache.beam.runners.core.SystemReduceFn<K,InputT,AccumT,OutputT,W></li> +</ul> +</li> +</ul> +</li> +</ul> +<div class="description"> +<ul class="blockList"> +<li class="blockList"> +<dl> +<dt><span class="paramLabel">Type Parameters:</span></dt> +<dd><code>K</code> - The type of key being processed.</dd> +<dd><code>InputT</code> - The type of values associated with the key.</dd> +<dd><code>OutputT</code> - The output type that will be produced for each key.</dd> +<dd><code>W</code> - The type of windows this operates on.</dd> +</dl> +<dl> +<dt>All Implemented Interfaces:</dt> +<dd><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Serializable.html?is-external=true"; title="class or interface in java.io">Serializable</a></dd> +</dl> +<hr> +<br> +<pre>public abstract class <span class="typeNameLabel">SystemReduceFn<K,InputT,AccumT,OutputT,W extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>></span> +extends <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core">ReduceFn</a><K,InputT,OutputT,W></pre> +<div class="block"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core"><code>ReduceFn</code></a> implementing the default reduction behaviors of <a href="../../../../../org/apache/beam/sdk/transforms/GroupByKey.html" title="class in org.apache.beam.sdk.transforms"><code>GroupByKey</code></a>.</div> +<dl> +<dt><span class="seeLabel">See Also:</span></dt> +<dd><a href="../../../../../serialized-form.html#org.apache.beam.runners.core.SystemReduceFn">Serialized Form</a></dd> +</dl> +</li> +</ul> +</div> +<div class="summary"> +<ul class="blockList"> +<li class="blockList"> +<!-- ======== NESTED CLASS SUMMARY ======== --> +<ul class="blockList"> +<li class="blockList"><a name="nested.class.summary"> +<!-- --> +</a> +<h3>Nested Class Summary</h3> +<ul class="blockList"> +<li class="blockList"><a name="nested.classes.inherited.from.class.org.apache.beam.runners.core.ReduceFn"> +<!-- --> +</a> +<h3>Nested classes/interfaces inherited from class org.apache.beam.runners.core.<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core">ReduceFn</a></h3> +<code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.Context.html" title="class in org.apache.beam.runners.core">ReduceFn.Context</a>, <a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnMergeContext.html" title="class in org.apache.beam.runners.core">ReduceFn.OnMergeContext</a>, <a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnTriggerContext.html" title="class in org.apache.beam.runners.core">ReduceFn.OnTriggerContext</a>, <a 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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>static <K,T,W extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>><br><a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="class in org.apache.beam.runners.core">SystemReduceFn</a><K,T,<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Iterable.html?is-external=true"; title="class or interface in java.lang">Iterable</a><T>,<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Iterable.html?is-external=true"; title="class or interface in java.lang">Iterable</a><T>,W></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html#buffering-org.apache.beam.sdk.coders.Coder-">buffering</a></span>(<a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="interface in org.apache.beam.sdk.coders">Coder</a><T> inputCoder)</code> +<div class="block">Create a factory that produces <a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="class in org.apache.beam.runners.core"><code>SystemReduceFn</code></a> instances that that buffer all of the + input values in persistent state and produces an <code>Iterable<T></code>.</div> +</td> +</tr> +<tr id="i1" class="rowColor"> +<td class="colFirst"><code>void</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html#clearState-org.apache.beam.runners.core.ReduceFn.Context-">clearState</a></span>(<a href="../../../../../org/apache/beam/runners/core/ReduceFn.Context.html" title="class in org.apache.beam.runners.core">ReduceFn.Context</a> c)</code> +<div class="block">Called to clear any persisted state that the <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core"><code>ReduceFn</code></a> may be holding.</div> +</td> +</tr> +<tr id="i2" class="altColor"> +<td class="colFirst"><code>static <K,InputT,AccumT,OutputT,W extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>><br><a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="class in org.apache.beam.runners.core">SystemReduceFn</a><K,InputT,AccumT,OutputT,W></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html#combining-org.apache.beam.sdk.coders.Coder-org.apache.beam.sdk.util.AppliedCombineFn-">combining</a></span>(<a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="interface in org.apache.beam.sdk.coders">Coder</a><K> keyCoder, + <a href="../../../../../org/apache/beam/sdk/util/AppliedCombineFn.html" title="class in org.apache.beam.sdk.util">AppliedCombineFn</a><K,InputT,AccumT,OutputT> combineFn)</code> +<div class="block">Create a factory that produces <a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="class in org.apache.beam.runners.core"><code>SystemReduceFn</code></a> instances that combine all of the input + values using a <a href="../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html" title="class in org.apache.beam.sdk.transforms"><code>Combine.CombineFn</code></a>.</div> +</td> +</tr> +<tr id="i3" class="rowColor"> +<td class="colFirst"><code><a href="../../../../../org/apache/beam/sdk/util/state/ReadableState.html" title="interface in org.apache.beam.sdk.util.state">ReadableState</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Boolean.html?is-external=true"; title="class or interface in java.lang">Boolean</a>></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html#isEmpty-org.apache.beam.sdk.util.state.StateAccessor-">isEmpty</a></span>(<a href="../../../../../org/apache/beam/sdk/util/state/StateAccessor.html" title="interface in org.apache.beam.sdk.util.state">StateAccessor</a><<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">K</a>> state)</code> +<div class="block">Returns true if the there is no buffered state.</div> +</td> +</tr> +<tr id="i4" class="altColor"> +<td class="colFirst"><code>void</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html#onTrigger-org.apache.beam.runners.core.ReduceFn.OnTriggerContext-">onTrigger</a></span>(<a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnTriggerContext.html" title="class in org.apache.beam.runners.core">ReduceFn.OnTriggerContext</a> c)</code> +<div class="block">Called when triggers fire.</div> +</td> +</tr> +<tr id="i5" class="rowColor"> +<td class="colFirst"><code>void</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html#prefetchOnTrigger-org.apache.beam.sdk.util.state.StateAccessor-">prefetchOnTrigger</a></span>(<a href="../../../../../org/apache/beam/sdk/util/state/StateAccessor.html" title="interface in org.apache.beam.sdk.util.state">StateAccessor</a><<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">K</a>> state)</code> +<div class="block">Called before <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#onTrigger-org.apache.beam.runners.core.ReduceFn.OnTriggerContext-"><code>ReduceFn.onTrigger(org.apache.beam.runners.core.ReduceFn<K, InputT, OutputT, W>.OnTriggerContext)</code></a> is invoked to provide an opportunity to prefetch any needed + state.</div> +</td> +</tr> +<tr id="i6" class="altColor"> +<td class="colFirst"><code>void</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html#processValue-org.apache.beam.runners.core.ReduceFn.ProcessValueContext-">processValue</a></span>(<a 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title="interface in org.apache.beam.sdk.util.state">CombiningState</a><<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">InputT</a>,<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">OutputT</a>>> bufferTag)</pre> +</li> +</ul> +</li> +</ul> +<!-- ============ METHOD DETAIL ========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.detail"> +<!-- --> +</a> +<h3>Method Detail</h3> +<a name="buffering-org.apache.beam.sdk.coders.Coder-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>buffering</h4> +<pre>public static <K,T,W extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>> <a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="class in 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class="block">Called for each value of type <code>InputT</code> associated with the current key.</div> +<dl> +<dt><span class="overrideSpecifyLabel">Specified by:</span></dt> +<dd><code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#processValue-org.apache.beam.runners.core.ReduceFn.ProcessValueContext-">processValue</a></code> in class <code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core">ReduceFn</a><<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">K</a>,<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">InputT</a>,<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">OutputT</a>,<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">W</a> extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>>< /code></dd> +<dt><span class="throwsLabel">Throws:</span></dt> +<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true"; title="class or interface in java.lang">Exception</a></code></dd> +</dl> +</li> +</ul> +<a name="prefetchOnTrigger-org.apache.beam.sdk.util.state.StateAccessor-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>prefetchOnTrigger</h4> +<pre>public void prefetchOnTrigger(<a href="../../../../../org/apache/beam/sdk/util/state/StateAccessor.html" title="interface in org.apache.beam.sdk.util.state">StateAccessor</a><<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">K</a>> state)</pre> +<div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#prefetchOnTrigger-org.apache.beam.sdk.util.state.StateAccessor-">ReduceFn</a></code></span></div> +<div class="block">Called before <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#onTrigger-org.apache.beam.runners.core.ReduceFn.OnTriggerContext-"><code>ReduceFn.onTrigger(org.apache.beam.runners.core.ReduceFn<K, InputT, OutputT, W>.OnTriggerContext)</code></a> is invoked to provide an opportunity to prefetch any needed + state.</div> +<dl> +<dt><span class="overrideSpecifyLabel">Overrides:</span></dt> +<dd><code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#prefetchOnTrigger-org.apache.beam.sdk.util.state.StateAccessor-">prefetchOnTrigger</a></code> in class <code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core">ReduceFn</a><<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">K</a>,<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">InputT</a>,<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">OutputT</a>,<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">W</a> extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>></co de></dd> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>state</code> - Context to use prefetch from.</dd> +</dl> +</li> +</ul> +<a name="onTrigger-org.apache.beam.runners.core.ReduceFn.OnTriggerContext-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>onTrigger</h4> +<pre>public void onTrigger(<a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnTriggerContext.html" title="class in org.apache.beam.runners.core">ReduceFn.OnTriggerContext</a> c) + throws <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true"; title="class or interface in java.lang">Exception</a></pre> +<div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#onTrigger-org.apache.beam.runners.core.ReduceFn.OnTriggerContext-">ReduceFn</a></code></span></div> +<div class="block">Called when triggers fire. + + <p>Implementations of <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core"><code>ReduceFn</code></a> should call <a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnTriggerContext.html#output-OutputT-"><code>ReduceFn.OnTriggerContext.output(OutputT)</code></a> to emit + any results that should be included in the pane produced by this trigger firing.</div> +<dl> +<dt><span class="overrideSpecifyLabel">Specified by:</span></dt> +<dd><code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#onTrigger-org.apache.beam.runners.core.ReduceFn.OnTriggerContext-">onTrigger</a></code> in class <code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core">ReduceFn</a><<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">K</a>,<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">InputT</a>,<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">OutputT</a>,<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">W</a> extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>></code></d d> +<dt><span class="throwsLabel">Throws:</span></dt> +<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true"; title="class or interface in java.lang">Exception</a></code></dd> +</dl> +</li> +</ul> +<a name="clearState-org.apache.beam.runners.core.ReduceFn.Context-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>clearState</h4> +<pre>public void clearState(<a href="../../../../../org/apache/beam/runners/core/ReduceFn.Context.html" title="class in org.apache.beam.runners.core">ReduceFn.Context</a> c) + throws <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true"; title="class or interface in java.lang">Exception</a></pre> +<div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#clearState-org.apache.beam.runners.core.ReduceFn.Context-">ReduceFn</a></code></span></div> +<div class="block">Called to clear any persisted state that the <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core"><code>ReduceFn</code></a> may be holding. This will be + called when the windowing is closing and will receive no future interactions.</div> +<dl> +<dt><span class="overrideSpecifyLabel">Specified by:</span></dt> +<dd><code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#clearState-org.apache.beam.runners.core.ReduceFn.Context-">clearState</a></code> in class <code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core">ReduceFn</a><<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">K</a>,<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">InputT</a>,<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">OutputT</a>,<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">W</a> extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>></code></dd> +<dt><span class="throwsLabel">Throws:</span></dt> +<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true"; title="class or interface in java.lang">Exception</a></code></dd> +</dl> +</li> +</ul> +<a name="isEmpty-org.apache.beam.sdk.util.state.StateAccessor-"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>isEmpty</h4> +<pre>public <a href="../../../../../org/apache/beam/sdk/util/state/ReadableState.html" title="interface in org.apache.beam.sdk.util.state">ReadableState</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Boolean.html?is-external=true"; title="class or interface in java.lang">Boolean</a>> isEmpty(<a href="../../../../../org/apache/beam/sdk/util/state/StateAccessor.html" title="interface in org.apache.beam.sdk.util.state">StateAccessor</a><<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">K</a>> state)</pre> +<div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#isEmpty-org.apache.beam.sdk.util.state.StateAccessor-">ReduceFn</a></code></span></div> +<div class="block">Returns true if the there is no buffered state.</div> +<dl> +<dt><span class="overrideSpecifyLabel">Specified by:</span></dt> +<dd><code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#isEmpty-org.apache.beam.sdk.util.state.StateAccessor-">isEmpty</a></code> in class <code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core">ReduceFn</a><<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">K</a>,<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">InputT</a>,<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">OutputT</a>,<a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="type parameter in SystemReduceFn">W</a> extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>></code></dd> +</dl> +</li> +</ul> +</li> +</ul> +</li> +</ul> +</div> +</div> +<!-- ========= END OF CLASS DATA ========= --> +<!-- ======= START OF BOTTOM NAVBAR ====== --> +<div class="bottomNav"><a name="navbar.bottom"> +<!-- --> +</a> +<div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div> +<a name="navbar.bottom.firstrow"> +<!-- --> +</a> +<ul class="navList" title="Navigation"> +<li><a href="../../../../../overview-summary.html">Overview</a></li> +<li><a href="package-summary.html">Package</a></li> +<li class="navBarCell1Rev">Class</li> +<li><a href="class-use/SystemReduceFn.html">Use</a></li> +<li><a href="package-tree.html">Tree</a></li> +<li><a href="../../../../../deprecated-list.html">Deprecated</a></li> +<li><a href="../../../../../index-all.html">Index</a></li> +<li><a href="../../../../../help-doc.html">Help</a></li> +</ul> +</div> +<div class="subNav"> +<ul class="navList"> +<li><a href="../../../../../org/apache/beam/runners/core/SplittableParDo.ProcessFn.html" title="class in org.apache.beam.runners.core"><span class="typeNameLink">Prev Class</span></a></li> +<li><a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.html" title="class in org.apache.beam.runners.core"><span class="typeNameLink">Next Class</span></a></li> +</ul> +<ul class="navList"> +<li><a href="../../../../../index.html?org/apache/beam/runners/core/SystemReduceFn.html" target="_top">Frames</a></li> +<li><a href="SystemReduceFn.html" target="_top">No Frames</a></li> +</ul> +<ul class="navList" id="allclasses_navbar_bottom"> +<li><a href="../../../../../allclasses-noframe.html">All Classes</a></li> +</ul> +<div> +<script type="text/javascript"><!-- + allClassesLink = document.getElementById("allclasses_navbar_bottom"); 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http://git-wip-us.apache.org/repos/asf/beam-site/blob/de6a0417/content/documentation/sdks/javadoc/0.4.0/org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html ---------------------------------------------------------------------- diff --git a/content/documentation/sdks/javadoc/0.4.0/org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html b/content/documentation/sdks/javadoc/0.4.0/org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html new file mode 100644 index 0000000..0d69ef8 --- /dev/null +++ b/content/documentation/sdks/javadoc/0.4.0/org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html @@ -0,0 +1,450 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd";> +<!-- NewPage --> +<html lang="en"> +<head> +<!-- Generated by javadoc (1.8.0_111) on Thu Dec 29 08:19:09 CET 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+<ul class="inheritance"> +<li><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true"; title="class or interface in java.lang">java.lang.Object</a></li> +<li> +<ul class="inheritance"> +<li><a href="../../../../../org/apache/beam/sdk/io/Source.html" title="class in org.apache.beam.sdk.io">org.apache.beam.sdk.io.Source</a><OutputT></li> +<li> +<ul class="inheritance"> +<li><a href="../../../../../org/apache/beam/sdk/io/UnboundedSource.html" title="class in org.apache.beam.sdk.io">org.apache.beam.sdk.io.UnboundedSource</a><T,org.apache.beam.runners.core.UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.Checkpoint<T>></li> +<li> +<ul class="inheritance"> +<li>org.apache.beam.runners.core.UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter<T></li> +</ul> +</li> +</ul> +</li> +</ul> +</li> +</ul> +<div class="description"> +<ul class="blockList"> +<li class="blockList"> +<dl> +<dt>All Implemented Interfaces:</dt> +<dd><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Serializable.html?is-external=true"; title="class or interface in java.io">Serializable</a>, <a href="../../../../../org/apache/beam/sdk/transforms/display/HasDisplayData.html" title="interface in org.apache.beam.sdk.transforms.display">HasDisplayData</a></dd> +</dl> +<dl> +<dt>Enclosing class:</dt> +<dd><a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.html" title="class in org.apache.beam.runners.core">UnboundedReadFromBoundedSource</a><<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.html" title="type parameter in UnboundedReadFromBoundedSource">T</a>></dd> +</dl> +<hr> +<br> +<pre>public static class <span class="typeNameLabel">UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter<T></span> +extends <a href="../../../../../org/apache/beam/sdk/io/UnboundedSource.html" title="class in org.apache.beam.sdk.io">UnboundedSource</a><T,org.apache.beam.runners.core.UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.Checkpoint<T>></pre> +<div class="block">A <code>BoundedSource</code> to <code>UnboundedSource</code> adapter.</div> +<dl> +<dt><span class="seeLabel">See Also:</span></dt> +<dd><a href="../../../../../serialized-form.html#org.apache.beam.runners.core.UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">Serialized Form</a></dd> +</dl> +</li> +</ul> +</div> +<div class="summary"> +<ul class="blockList"> +<li class="blockList"> +<!-- ======== NESTED CLASS SUMMARY ======== --> +<ul class="blockList"> +<li class="blockList"><a name="nested.class.summary"> +<!-- --> +</a> +<h3>Nested Class Summary</h3> +<ul class="blockList"> +<li class="blockList"><a name="nested.classes.inherited.from.class.org.apache.beam.sdk.io.UnboundedSource"> +<!-- --> +</a> +<h3>Nested classes/interfaces inherited from class org.apache.beam.sdk.io.<a 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+<caption><span>Constructors</span><span class="tabEnd"> </span></caption> +<tr> +<th class="colOne" scope="col">Constructor and Description</th> +</tr> +<tr class="altColor"> +<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html#BoundedToUnboundedSourceAdapter-org.apache.beam.sdk.io.BoundedSource-">BoundedToUnboundedSourceAdapter</a></span>(<a href="../../../../../org/apache/beam/sdk/io/BoundedSource.html" title="class in org.apache.beam.sdk.io">BoundedSource</a><<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>> boundedSource)</code> </td> +</tr> +</table> +</li> +</ul> +<!-- ========== METHOD SUMMARY =========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.summary"> +<!-- --> 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org.apache.beam.sdk.io"><code>UnboundedSource.UnboundedReader</code></a> to read from this source, resuming from the given + checkpoint if present.</div> +</td> +</tr> +<tr id="i1" class="rowColor"> +<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true"; title="class or interface in java.util">List</a><<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="class in org.apache.beam.runners.core">UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter</a><<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>>></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html#generateInitialSplits-int-org.apache.beam.sdk.options.PipelineOptions-">generateInitialSplits</a></span>(int desiredNumSplits, + <a href="../../../../../org/apache/beam/sdk/options/PipelineOptions.html" title="interface in org.apache.beam.sdk.options">PipelineOptions</a> options)</code> +<div class="block">Returns a list of <code>UnboundedSource</code> objects representing the instances of this source + that should be used when executing the workflow.</div> +</td> +</tr> +<tr id="i2" class="altColor"> +<td class="colFirst"><code><a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="interface in org.apache.beam.sdk.coders">Coder</a><org.apache.beam.runners.core.UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.Checkpoint<<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>>></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html#getCheckpointMarkCoder--">getCheckpointMarkCoder</a></span>()</code> +<div class="block">Returns a <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="interface in org.apache.beam.sdk.coders"><code>Coder</code></a> for encoding and decoding the checkpoints for this source, or + null if the checkpoints do not need to be durably committed.</div> +</td> +</tr> +<tr id="i3" class="rowColor"> +<td class="colFirst"><code><a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="interface in org.apache.beam.sdk.coders">Coder</a><<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in 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Detail</h3> +<a name="validate--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>validate</h4> +<pre>public void validate()</pre> +<div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../org/apache/beam/sdk/io/Source.html#validate--">Source</a></code></span></div> +<div class="block">Checks that this source is valid, before it can be used in a pipeline. + + <p>It is recommended to use <code>Preconditions</code> for implementing + this method.</div> +<dl> +<dt><span class="overrideSpecifyLabel">Specified by:</span></dt> +<dd><code><a href="../../../../../org/apache/beam/sdk/io/Source.html#validate--">validate</a></code> in class <code><a href="../../../../../org/apache/beam/sdk/io/Source.html" title="class in org.apache.beam.sdk.io">Source</a><<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>></code></dd> +</dl> +</li> +</ul> +<a name="generateInitialSplits-int-org.apache.beam.sdk.options.PipelineOptions-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>generateInitialSplits</h4> +<pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true"; title="class or interface in java.util">List</a><<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="class in org.apache.beam.runners.core">UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter</a><<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>>> generateInitialSplits(int desiredNumSplits, + <a href="../../../../../org/apache/beam/sdk/options/PipelineOptions.html" title="interface in org.apache.beam.sdk.options">PipelineOptions</a> options) + throws <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true"; title="class or interface in java.lang">Exception</a></pre> +<div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../org/apache/beam/sdk/io/UnboundedSource.html#generateInitialSplits-int-org.apache.beam.sdk.options.PipelineOptions-">UnboundedSource</a></code></span></div> +<div class="block">Returns a list of <code>UnboundedSource</code> objects representing the instances of this source + that should be used when executing the workflow. Each split should return a separate partition + of the input data. + + <p>For example, for a source reading from a growing directory of files, each split + could correspond to a prefix of file names. + + <p>Some sources are not splittable, such as reading from a single TCP stream. In that + case, only a single split should be returned. + + <p>Some data sources automatically partition their data among readers. For these types of + inputs, <code>n</code> identical replicas of the top-level source can be returned. + + <p>The size of the returned list should be as close to <code>desiredNumSplits</code> + as possible, but does not have to match exactly. A low number of splits + will limit the amount of parallelism in the source.</div> +<dl> +<dt><span class="overrideSpecifyLabel">Specified by:</span></dt> +<dd><code><a href="../../../../../org/apache/beam/sdk/io/UnboundedSource.html#generateInitialSplits-int-org.apache.beam.sdk.options.PipelineOptions-">generateInitialSplits</a></code> in class <code><a href="../../../../../org/apache/beam/sdk/io/UnboundedSource.html" title="class in org.apache.beam.sdk.io">UnboundedSource</a><<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>,org.apache.beam.runners.core.UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.Checkpoint<<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>>></code></dd> +<dt><span class="throwsLabel">Throws:</span></dt> +<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true"; title="class or interface in java.lang">Exception</a></code></dd> +</dl> +</li> +</ul> +<a name="createReader-org.apache.beam.sdk.options.PipelineOptions-org.apache.beam.runners.core.UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.Checkpoint-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>createReader</h4> +<pre>public org.apache.beam.runners.core.UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.Reader createReader(<a href="../../../../../org/apache/beam/sdk/options/PipelineOptions.html" title="interface in org.apache.beam.sdk.options">PipelineOptions</a> options, + org.apache.beam.runners.core.UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.Checkpoint<<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>> checkpoint) + throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true"; title="class or interface in java.io">IOException</a></pre> +<div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../org/apache/beam/sdk/io/UnboundedSource.html#createReader-org.apache.beam.sdk.options.PipelineOptions-CheckpointMarkT-">UnboundedSource</a></code></span></div> +<div class="block">Create a new <a href="../../../../../org/apache/beam/sdk/io/UnboundedSource.UnboundedReader.html" title="class in org.apache.beam.sdk.io"><code>UnboundedSource.UnboundedReader</code></a> to read from this source, resuming from the given + checkpoint if present.</div> +<dl> +<dt><span class="overrideSpecifyLabel">Specified by:</span></dt> +<dd><code><a href="../../../../../org/apache/beam/sdk/io/UnboundedSource.html#createReader-org.apache.beam.sdk.options.PipelineOptions-CheckpointMarkT-">createReader</a></code> in class <code><a href="../../../../../org/apache/beam/sdk/io/UnboundedSource.html" title="class in org.apache.beam.sdk.io">UnboundedSource</a><<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>,org.apache.beam.runners.core.UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.Checkpoint<<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>>></code></dd> +<dt><span class="throwsLabel">Throws:</span></dt> +<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true"; title="class or interface in java.io">IOException</a></code></dd> +</dl> +</li> +</ul> +<a name="getDefaultOutputCoder--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>getDefaultOutputCoder</h4> +<pre>public <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="interface in org.apache.beam.sdk.coders">Coder</a><<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>> getDefaultOutputCoder()</pre> +<div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../org/apache/beam/sdk/io/Source.html#getDefaultOutputCoder--">Source</a></code></span></div> +<div class="block">Returns the default <code>Coder</code> to use for the data read from this source.</div> +<dl> +<dt><span class="overrideSpecifyLabel">Specified by:</span></dt> +<dd><code><a href="../../../../../org/apache/beam/sdk/io/Source.html#getDefaultOutputCoder--">getDefaultOutputCoder</a></code> in class <code><a href="../../../../../org/apache/beam/sdk/io/Source.html" title="class in org.apache.beam.sdk.io">Source</a><<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>></code></dd> +</dl> +</li> +</ul> +<a name="getCheckpointMarkCoder--"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>getCheckpointMarkCoder</h4> +<pre>public <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="interface in org.apache.beam.sdk.coders">Coder</a><org.apache.beam.runners.core.UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.Checkpoint<<a 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href="../../../../../org/apache/beam/sdk/io/UnboundedSource.html" title="class in org.apache.beam.sdk.io">UnboundedSource</a><<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>,org.apache.beam.runners.core.UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.Checkpoint<<a href="../../../../../org/apache/beam/runners/core/UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter.html" title="type parameter in UnboundedReadFromBoundedSource.BoundedToUnboundedSourceAdapter">T</a>>></code></dd> +</dl> +</li> +</ul> +</li> +</ul> +</li> +</ul> +</div> +</div> +<!-- ========= END OF CLASS DATA ========= --> +<!-- ======= START OF BOTTOM NAVBAR ====== --> +<div class="bottomNav"><a name="navbar.bottom"> +<!-- --> +</a> +<div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation 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