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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.rex</a></div> |
| <h2 title="Class RexWindowBound" class="title">Class RexWindowBound</h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
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| <li>org.apache.calcite.rex.RexWindowBound</li> |
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| <dt>Direct Known Subclasses:</dt> |
| <dd><code><a href="RexWindowBound.RexWindowBoundBounded.html" title="class in org.apache.calcite.rex">RexWindowBound.RexWindowBoundBounded</a></code>, <code><a href="RexWindowBound.RexWindowBoundCurrentRow.html" title="class in org.apache.calcite.rex">RexWindowBound.RexWindowBoundCurrentRow</a></code>, <code><a href="RexWindowBound.RexWindowBoundUnbounded.html" title="class in org.apache.calcite.rex">RexWindowBound.RexWindowBoundUnbounded</a></code></dd> |
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| <pre>public abstract class <span class="typeNameLabel">RexWindowBound</span> |
| extends java.lang.Object</pre> |
| <div class="block">Abstracts "XX PRECEDING/FOLLOWING" and "CURRENT ROW" bounds for windowed |
| aggregates.</div> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Class</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="RexWindowBound.RexWindowBoundBounded.html" title="class in org.apache.calcite.rex">RexWindowBound.RexWindowBoundBounded</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Implements XX PRECEDING/FOLLOWING bound where XX is not UNBOUNDED.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="RexWindowBound.RexWindowBoundCurrentRow.html" title="class in org.apache.calcite.rex">RexWindowBound.RexWindowBoundCurrentRow</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Implements CURRENT ROW bound.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="RexWindowBound.RexWindowBoundUnbounded.html" title="class in org.apache.calcite.rex">RexWindowBound.RexWindowBoundUnbounded</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Implements UNBOUNDED PRECEDING/FOLLOWING bound.</div> |
| </td> |
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| <th class="colFirst" scope="col">Constructor</th> |
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| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">RexWindowBound</a></span>()</code></th> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><R> <a href="RexWindowBound.html" title="class in org.apache.calcite.rex">RexWindowBound</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#accept(org.apache.calcite.rex.RexVisitor)">accept</a></span>​(<a href="RexVisitor.html" title="interface in org.apache.calcite.rex">RexVisitor</a><R> visitor)</code></th> |
| <td class="colLast"> |
| <div class="block">Transforms the bound via <a href="RexVisitor.html" title="interface in org.apache.calcite.rex"><code>RexVisitor</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <a href="RexWindowBound.html" title="class in org.apache.calcite.rex">RexWindowBound</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#create(org.apache.calcite.sql.SqlNode,org.apache.calcite.rex.RexNode)">create</a></span>​(<a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> node, |
| <a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a> rexNode)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates window bound.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getOffset()">getOffset</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns offset from XX PRECEDING/FOLLOWING.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getOrderKey()">getOrderKey</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns relative sort offset when known at compile time.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isCurrentRow()">isCurrentRow</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns if the bound is CURRENT ROW.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isFollowing()">isFollowing</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns if the bound is FOLLOWING.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isPreceding()">isPreceding</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns if the bound is PRECEDING.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isUnbounded()">isUnbounded</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns if the bound is unbounded.</div> |
| </td> |
| </tr> |
| </table> |
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| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
| </ul> |
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| <h4>RexWindowBound</h4> |
| <pre>public RexWindowBound()</pre> |
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| <a id="create(org.apache.calcite.sql.SqlNode,org.apache.calcite.rex.RexNode)"> |
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| <h4>create</h4> |
| <pre class="methodSignature">public static <a href="RexWindowBound.html" title="class in org.apache.calcite.rex">RexWindowBound</a> create​(<a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> node, |
| <a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a> rexNode)</pre> |
| <div class="block">Creates window bound.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>node</code> - SqlNode of the bound</dd> |
| <dd><code>rexNode</code> - offset value when bound is not UNBOUNDED/CURRENT ROW</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>window bound</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="isUnbounded()"> |
| <!-- --> |
| </a> |
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| <h4>isUnbounded</h4> |
| <pre class="methodSignature">public boolean isUnbounded()</pre> |
| <div class="block">Returns if the bound is unbounded.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>if the bound is unbounded</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="isPreceding()"> |
| <!-- --> |
| </a> |
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| <h4>isPreceding</h4> |
| <pre class="methodSignature">public boolean isPreceding()</pre> |
| <div class="block">Returns if the bound is PRECEDING.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>if the bound is PRECEDING</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="isFollowing()"> |
| <!-- --> |
| </a> |
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| <li class="blockList"> |
| <h4>isFollowing</h4> |
| <pre class="methodSignature">public boolean isFollowing()</pre> |
| <div class="block">Returns if the bound is FOLLOWING.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>if the bound is FOLLOWING</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="isCurrentRow()"> |
| <!-- --> |
| </a> |
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| <li class="blockList"> |
| <h4>isCurrentRow</h4> |
| <pre class="methodSignature">public boolean isCurrentRow()</pre> |
| <div class="block">Returns if the bound is CURRENT ROW.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>if the bound is CURRENT ROW</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getOffset()"> |
| <!-- --> |
| </a> |
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| <li class="blockList"> |
| <h4>getOffset</h4> |
| <pre class="methodSignature">public <a href="RexNode.html" title="class in org.apache.calcite.rex">RexNode</a> getOffset()</pre> |
| <div class="block">Returns offset from XX PRECEDING/FOLLOWING.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>offset from XX PRECEDING/FOLLOWING</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getOrderKey()"> |
| <!-- --> |
| </a> |
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| <li class="blockList"> |
| <h4>getOrderKey</h4> |
| <pre class="methodSignature">public int getOrderKey()</pre> |
| <div class="block">Returns relative sort offset when known at compile time. |
| For instance, UNBOUNDED PRECEDING is less than CURRENT ROW.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>relative order or -1 when order is not known</dd> |
| </dl> |
| </li> |
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| <h4>accept</h4> |
| <pre class="methodSignature">public <R> <a href="RexWindowBound.html" title="class in org.apache.calcite.rex">RexWindowBound</a> accept​(<a href="RexVisitor.html" title="interface in org.apache.calcite.rex">RexVisitor</a><R> visitor)</pre> |
| <div class="block">Transforms the bound via <a href="RexVisitor.html" title="interface in org.apache.calcite.rex"><code>RexVisitor</code></a>.</div> |
| <dl> |
| <dt><span class="paramLabel">Type Parameters:</span></dt> |
| <dd><code>R</code> - return type of the visitor</dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>visitor</code> - visitor to accept</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>transformed bound</dd> |
| </dl> |
| </li> |
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