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| <div class="subTitle">org.apache.hadoop.mapreduce.lib.join</div> |
| <h2 title="Class ArrayListBackedIterator" class="title">Class ArrayListBackedIterator<X extends <a href="../../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>></h2> |
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| <div class="contentContainer"> |
| <ul class="inheritance"> |
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| <ul class="inheritance"> |
| <li>org.apache.hadoop.mapreduce.lib.join.ArrayListBackedIterator<X></li> |
| </ul> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html" title="interface in org.apache.hadoop.mapreduce.lib.join">ResetableIterator</a><X></dd> |
| </dl> |
| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../../../org/apache/hadoop/mapred/join/ArrayListBackedIterator.html" title="class in org.apache.hadoop.mapred.join">ArrayListBackedIterator</a></dd> |
| </dl> |
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| <br> |
| <pre>@InterfaceAudience.Public |
| @InterfaceStability.Stable |
| public class <span class="typeNameLabel">ArrayListBackedIterator<X extends <a href="../../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>></span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> |
| implements <a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html" title="interface in org.apache.hadoop.mapreduce.lib.join">ResetableIterator</a><X></pre> |
| <div class="block">This class provides an implementation of ResetableIterator. The |
| implementation uses an <a href="https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html?is-external=true" title="class or interface in java.util"><code>ArrayList</code></a> to store elements |
| added to it, replaying them as requested. |
| Prefer <a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/StreamBackedIterator.html" title="class in org.apache.hadoop.mapreduce.lib.join"><code>StreamBackedIterator</code></a>.</div> |
| </li> |
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| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html#ArrayListBackedIterator--">ArrayListBackedIterator</a></span>()</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html#ArrayListBackedIterator-java.util.ArrayList-">ArrayListBackedIterator</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html?is-external=true" title="class or interface in java.util">ArrayList</a><<a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html" title="type parameter in ArrayListBackedIterator">X</a>> data)</code> </td> |
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| </li> |
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| <!-- ========== METHOD SUMMARY =========== --> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="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>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html#add-X-">add</a></span>(<a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html" title="type parameter in ArrayListBackedIterator">X</a> item)</code> |
| <div class="block">Add an element to the collection of elements to iterate over.</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/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html#clear--">clear</a></span>()</code> |
| <div class="block">Close datasources, but do not release internal resources.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html#close--">close</a></span>()</code> |
| <div class="block">Close datasources and release resources.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html#hasNext--">hasNext</a></span>()</code> |
| <div class="block">True if a call to next may return a value.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html#next-X-">next</a></span>(<a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html" title="type parameter in ArrayListBackedIterator">X</a> val)</code> |
| <div class="block">Assign next value to actual.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html#replay-X-">replay</a></span>(<a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html" title="type parameter in ArrayListBackedIterator">X</a> val)</code> |
| <div class="block">Assign last value returned to actual.</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/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html#reset--">reset</a></span>()</code> |
| <div class="block">Set iterator to return to the start of its range.</div> |
| </td> |
| </tr> |
| </table> |
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| <h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
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| <div class="details"> |
| <ul class="blockList"> |
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| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor.detail"> |
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| </a> |
| <h3>Constructor Detail</h3> |
| <a name="ArrayListBackedIterator--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>ArrayListBackedIterator</h4> |
| <pre>public ArrayListBackedIterator()</pre> |
| </li> |
| </ul> |
| <a name="ArrayListBackedIterator-java.util.ArrayList-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>ArrayListBackedIterator</h4> |
| <pre>public ArrayListBackedIterator(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html?is-external=true" title="class or interface in java.util">ArrayList</a><<a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html" title="type parameter in ArrayListBackedIterator">X</a>> data)</pre> |
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| <li class="blockList"><a name="method.detail"> |
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| <h3>Method Detail</h3> |
| <a name="hasNext--"> |
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| <h4>hasNext</h4> |
| <pre>public boolean hasNext()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html#hasNext--">ResetableIterator</a></code></span></div> |
| <div class="block">True if a call to next may return a value. This is permitted false |
| positives, but not false negatives.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html#hasNext--">hasNext</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html" title="interface in org.apache.hadoop.mapreduce.lib.join">ResetableIterator</a><<a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html" title="type parameter in ArrayListBackedIterator">X</a> extends <a href="../../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>></code></dd> |
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| <a name="next-org.apache.hadoop.io.Writable-"> |
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| <h4>next</h4> |
| <pre>public boolean next(<a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html" title="type parameter in ArrayListBackedIterator">X</a> val) |
| throws <a href="https://docs.oracle.com/javase/8/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 interface: <code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html#next-T-">ResetableIterator</a></code></span></div> |
| <div class="block">Assign next value to actual. |
| It is required that elements added to a ResetableIterator be returned in |
| the same order after a call to <a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html#reset--"><code>ResetableIterator.reset()</code></a> (FIFO). |
| |
| Note that a call to this may fail for nested joins (i.e. more elements |
| available, but none satisfying the constraints of the join)</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html#next-T-">next</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html" title="interface in org.apache.hadoop.mapreduce.lib.join">ResetableIterator</a><<a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html" title="type parameter in ArrayListBackedIterator">X</a> extends <a href="../../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/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="replay-org.apache.hadoop.io.Writable-"> |
| <!-- --> |
| </a><a name="replay-X-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>replay</h4> |
| <pre>public boolean replay(<a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html" title="type parameter in ArrayListBackedIterator">X</a> val) |
| throws <a href="https://docs.oracle.com/javase/8/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 interface: <code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html#replay-T-">ResetableIterator</a></code></span></div> |
| <div class="block">Assign last value returned to actual.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html#replay-T-">replay</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html" title="interface in org.apache.hadoop.mapreduce.lib.join">ResetableIterator</a><<a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html" title="type parameter in ArrayListBackedIterator">X</a> extends <a href="../../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/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="reset--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>reset</h4> |
| <pre>public void reset()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html#reset--">ResetableIterator</a></code></span></div> |
| <div class="block">Set iterator to return to the start of its range. Must be called after |
| calling <a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html#add-T-"><code>ResetableIterator.add(T)</code></a> to avoid a ConcurrentModificationException.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html#reset--">reset</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html" title="interface in org.apache.hadoop.mapreduce.lib.join">ResetableIterator</a><<a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html" title="type parameter in ArrayListBackedIterator">X</a> extends <a href="../../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="add-org.apache.hadoop.io.Writable-"> |
| <!-- --> |
| </a><a name="add-X-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>add</h4> |
| <pre>public void add(<a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html" title="type parameter in ArrayListBackedIterator">X</a> item) |
| throws <a href="https://docs.oracle.com/javase/8/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 interface: <code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html#add-T-">ResetableIterator</a></code></span></div> |
| <div class="block">Add an element to the collection of elements to iterate over.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html#add-T-">add</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html" title="interface in org.apache.hadoop.mapreduce.lib.join">ResetableIterator</a><<a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html" title="type parameter in ArrayListBackedIterator">X</a> extends <a href="../../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/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="close--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>close</h4> |
| <pre>public void close() |
| throws <a href="https://docs.oracle.com/javase/8/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 interface: <code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html#close--">ResetableIterator</a></code></span></div> |
| <div class="block">Close datasources and release resources. Calling methods on the iterator |
| after calling close has undefined behavior.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html#close--">close</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html" title="interface in org.apache.hadoop.mapreduce.lib.join">ResetableIterator</a><<a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html" title="type parameter in ArrayListBackedIterator">X</a> extends <a href="../../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>></code></dd> |
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| <h4>clear</h4> |
| <pre>public void clear()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html#clear--">ResetableIterator</a></code></span></div> |
| <div class="block">Close datasources, but do not release internal resources. Calling this |
| method should permit the object to be reused with a different datasource.</div> |
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| <dd><code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html#clear--">clear</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ResetableIterator.html" title="interface in org.apache.hadoop.mapreduce.lib.join">ResetableIterator</a><<a href="../../../../../../org/apache/hadoop/mapreduce/lib/join/ArrayListBackedIterator.html" title="type parameter in ArrayListBackedIterator">X</a> extends <a href="../../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>></code></dd> |
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