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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.util</a></div> |
| <h1 title="Class Permutation" class="title">Class Permutation</h1> |
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| <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">java.lang.Object</a> |
| <div class="inheritance">org.apache.calcite.util.Permutation</div> |
| </div> |
| <section class="description"> |
| <dl> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Iterable</a><<a href="mapping/IntPair.html" title="class in org.apache.calcite.util.mapping">IntPair</a>></code>, <code><a href="mapping/Mapping.html" title="interface in org.apache.calcite.util.mapping">Mapping</a></code>, <code><a href="mapping/Mappings.CoreMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.CoreMapping</a></code>, <code><a href="mapping/Mappings.FunctionMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.FunctionMapping</a></code>, <code><a href="mapping/Mappings.SourceMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.SourceMapping</a></code>, <code><a href="mapping/Mappings.TargetMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.TargetMapping</a></code></dd> |
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| <pre>public class <span class="typeNameLabel">Permutation</span> |
| extends <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> |
| implements <a href="mapping/Mapping.html" title="interface in org.apache.calcite.util.mapping">Mapping</a>, <a href="mapping/Mappings.TargetMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.TargetMapping</a></pre> |
| <div class="block">Represents a mapping which reorders elements in an array.</div> |
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| <h2>Constructor Summary</h2> |
| <div class="memberSummary"> |
| <table> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <thead> |
| <tr> |
| <th class="colFirst" scope="col">Constructor</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="altColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(int)">Permutation</a></span>​(int size)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates a permutation of a given size.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(int%5B%5D)">Permutation</a></span>​(int[] targets)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates a permutation from an array.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
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| <h2>Method Summary</h2> |
| <div class="memberSummary"> |
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| <div id="memberSummary_tabpanel" role="tabpanel"> |
| <table aria-labelledby="t0"> |
| <thead> |
| <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> |
| </thead> |
| <tbody> |
| <tr class="altColor" id="i0"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#clear()">clear</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Removes all elements in the mapping.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i1"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#clone()">clone</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor" id="i2"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#equals(java.lang.Object)">equals</a></span>​(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> obj)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor" id="i3"> |
| <td class="colFirst"><code><a href="mapping/MappingType.html" title="enum in org.apache.calcite.util.mapping">MappingType</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getMappingType()">getMappingType</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the mapping type.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i4"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSource(int)">getSource</a></span>​(int target)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the position which maps to <code>target</code>.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i5"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSourceCount()">getSourceCount</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the number of sources.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i6"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSourceOpt(int)">getSourceOpt</a></span>​(int target)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the source that a target maps to, or -1 if it is not mapped.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i7"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTarget(int)">getTarget</a></span>​(int source)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the position that <code>source</code> is mapped to.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i8"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTargetCount()">getTargetCount</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the number of targets.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i9"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTargetOpt(int)">getTargetOpt</a></span>​(int source)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the target that a source maps to, or -1 if it is not mapped.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i10"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hashCode()">hashCode</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor" id="i11"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#identity()">identity</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Initializes this permutation to the identity permutation.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i12"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#insertSource(int)">insertSource</a></span>​(int x)</code></th> |
| <td class="colLast"> |
| <div class="block">Inserts into the sources.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i13"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#insertTarget(int)">insertTarget</a></span>​(int x)</code></th> |
| <td class="colLast"> |
| <div class="block">Inserts into the targets.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i14"> |
| <td class="colFirst"><code><a href="Permutation.html" title="class in org.apache.calcite.util">Permutation</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#inverse()">inverse</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the inverse permutation.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i15"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isIdentity()">isIdentity</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether this is the identity permutation.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i16"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/9/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util" class="externalLink">Iterator</a><<a href="mapping/IntPair.html" title="class in org.apache.calcite.util.mapping">IntPair</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#iterator()">iterator</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns an iterator over the elements in this mapping.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i17"> |
| <td class="colFirst"><code><a href="Permutation.html" title="class in org.apache.calcite.util">Permutation</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#product(org.apache.calcite.util.Permutation)">product</a></span>​(<a href="Permutation.html" title="class in org.apache.calcite.util">Permutation</a> permutation)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the product of this Permutation with a given Permutation.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i18"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#set(int,int)">set</a></span>​(int source, |
| int target)</code></th> |
| <td class="colLast"> |
| <div class="block">Maps source position to target position.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i19"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#set(int,int,boolean)">set</a></span>​(int source, |
| int target, |
| boolean allowResize)</code></th> |
| <td class="colLast"> |
| <div class="block">Maps source position to target position, automatically resizing if source |
| or target is out of bounds.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i20"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setAll(org.apache.calcite.util.mapping.Mapping)">setAll</a></span>​(<a href="mapping/Mapping.html" title="interface in org.apache.calcite.util.mapping">Mapping</a> mapping)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor" id="i21"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#size()">size</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the number of elements in this permutation.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i22"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString()">toString</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a string representation of this permutation.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| </div> |
| <div class="inheritedList"> |
| <h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></h3> |
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| <!-- --> |
| </a><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink">finalize</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink">getClass</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink">notifyAll</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink">wait</a></code></div> |
| <div class="inheritedList"> |
| <h3>Methods inherited from interface java.lang.<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Iterable</a></h3> |
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| <section class="detail"> |
| <h3><a id="<init>(int)">Permutation</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="memberName">Permutation</span>​(<span class="arguments">int size)</span></div> |
| <div class="block">Creates a permutation of a given size. |
| |
| <p>It is initialized to the identity permutation, such as "[0, 1, 2, 3]".</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>size</code> - Number of elements in the permutation</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="<init>(int[])">Permutation</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="memberName">Permutation</span>​(<span class="arguments">int[] targets)</span></div> |
| <div class="block">Creates a permutation from an array.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>targets</code> - Array of targets</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang" class="externalLink">IllegalArgumentException</a></code> - if elements of array are not unique</dd> |
| <dd><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/ArrayIndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang" class="externalLink">ArrayIndexOutOfBoundsException</a></code> - if elements of array are not |
| between 0 through targets.length - 1 |
| inclusive</dd> |
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| <h3><a id="clone()">clone</a></h3> |
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| <dd><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang" class="externalLink">clone</a></code> in class <code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></code></dd> |
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| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="identity()">identity</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">void</span> <span class="memberName">identity</span>()</div> |
| <div class="block">Initializes this permutation to the identity permutation.</div> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="size()">size</a></h3> |
| <div class="memberSignature"><span class="modifiers">public final</span> <span class="returnType">int</span> <span class="memberName">size</span>()</div> |
| <div class="block">Returns the number of elements in this permutation.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mapping.html#size()">size</a></code> in interface <code><a href="mapping/Mapping.html" title="interface in org.apache.calcite.util.mapping">Mapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.CoreMapping.html#size()">size</a></code> in interface <code><a href="mapping/Mappings.CoreMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.CoreMapping</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="clear()">clear</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">void</span> <span class="memberName">clear</span>()</div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="mapping/Mapping.html#clear()">Mapping</a></code></span></div> |
| <div class="block">Removes all elements in the mapping.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mapping.html#clear()">clear</a></code> in interface <code><a href="mapping/Mapping.html" title="interface in org.apache.calcite.util.mapping">Mapping</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="toString()">toString</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></span> <span class="memberName">toString</span>()</div> |
| <div class="block">Returns a string representation of this permutation. |
| |
| <p>For example, the mapping |
| |
| <table> |
| <caption>Example mapping</caption> |
| <tr> |
| <th>source</th> |
| <th>target</th> |
| </tr> |
| <tr> |
| <td>0</td> |
| <td>2</td> |
| </tr> |
| <tr> |
| <td>1</td> |
| <td>0</td> |
| </tr> |
| <tr> |
| <td>2</td> |
| <td>1</td> |
| </tr> |
| <tr> |
| <td>3</td> |
| <td>3</td> |
| </tr> |
| </table> |
| |
| <p>is represented by the string "[2, 0, 1, 3]".</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang" class="externalLink">toString</a></code> in class <code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="set(int,int)">set</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">void</span> <span class="memberName">set</span>​(<span class="arguments">int source, |
| int target)</span></div> |
| <div class="block">Maps source position to target position. |
| |
| <p>To preserve the 1:1 nature of the permutation, the previous target of |
| source becomes the new target of the previous source. |
| |
| <p>For example, given the permutation |
| |
| <blockquote><pre>[3, 2, 0, 1]</pre></blockquote> |
| |
| <p>suppose we map position 2 to target 1. Position 2 currently has target |
| 0, and the source of position 1 is position 3. We preserve the permutation |
| property by mapping the previous source 3 to the previous target 0. The new |
| permutation is |
| |
| <blockquote><pre>[3, 2, 1, 0].</pre></blockquote> |
| |
| <p>Another example. Again starting from |
| |
| <blockquote><pre>[3, 2, 0, 1]</pre></blockquote> |
| |
| <p>suppose we map position 2 to target 3. We map the previous source 0 to |
| the previous target 0, which gives |
| |
| <blockquote><pre>[0, 2, 3, 1].</pre></blockquote></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.TargetMapping.html#set(int,int)">set</a></code> in interface <code><a href="mapping/Mappings.TargetMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.TargetMapping</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>source</code> - Source position</dd> |
| <dd><code>target</code> - Target position</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/ArrayIndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang" class="externalLink">ArrayIndexOutOfBoundsException</a></code> - if source or target is negative or |
| greater than or equal to the size of |
| the permuation</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="set(int,int,boolean)">set</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">void</span> <span class="memberName">set</span>​(<span class="arguments">int source, |
| int target, |
| boolean allowResize)</span></div> |
| <div class="block">Maps source position to target position, automatically resizing if source |
| or target is out of bounds. |
| |
| <p>To preserve the 1:1 nature of the permutation, the previous target of |
| source becomes the new target of the previous source. |
| |
| <p>For example, given the permutation |
| |
| <blockquote><pre>[3, 2, 0, 1]</pre></blockquote> |
| |
| <p>suppose we map position 2 to target 1. Position 2 currently has target |
| 0, and the source of position 1 is position 3. We preserve the permutation |
| property by mapping the previous source 3 to the previous target 0. The new |
| permutation is |
| |
| <blockquote><pre>[3, 2, 1, 0].</pre></blockquote> |
| |
| <p>Another example. Again starting from |
| |
| <blockquote><pre>[3, 2, 0, 1]</pre></blockquote> |
| |
| <p>suppose we map position 2 to target 3. We map the previous source 0 to |
| the previous target 0, which gives |
| |
| <blockquote><pre>[0, 2, 3, 1].</pre></blockquote></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>source</code> - Source position</dd> |
| <dd><code>target</code> - Target position</dd> |
| <dd><code>allowResize</code> - Whether to resize the permutation if the source or |
| target is greater than the current capacity</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/ArrayIndexOutOfBoundsException.html?is-external=true" title="class or interface in java.lang" class="externalLink">ArrayIndexOutOfBoundsException</a></code> - if source or target is negative, |
| or greater than or equal to the size |
| of the permutation, and |
| <code>allowResize</code> is false</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="insertTarget(int)">insertTarget</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">void</span> <span class="memberName">insertTarget</span>​(<span class="arguments">int x)</span></div> |
| <div class="block">Inserts into the targets. |
| |
| <p>For example, consider the permutation</p> |
| |
| <table border="1"> |
| <caption>Example permutation</caption> |
| <tr> |
| <td>source</td> |
| <td>0</td> |
| <td>1</td> |
| <td>2</td> |
| <td>3</td> |
| <td>4</td> |
| </tr> |
| <tr> |
| <td>target</td> |
| <td>3</td> |
| <td>0</td> |
| <td>4</td> |
| <td>2</td> |
| <td>1</td> |
| </tr> |
| </table> |
| |
| <p>After applying <code>insertTarget(2)</code> every target 2 or higher is |
| shifted up one.</p> |
| |
| <table border="1"> |
| <caption>Mapping after applying insertTarget(2)</caption> |
| <tr> |
| <td>source</td> |
| <td>0</td> |
| <td>1</td> |
| <td>2</td> |
| <td>3</td> |
| <td>4</td> |
| <td>5</td> |
| </tr> |
| <tr> |
| <td>target</td> |
| <td>4</td> |
| <td>0</td> |
| <td>5</td> |
| <td>3</td> |
| <td>1</td> |
| <td>2</td> |
| </tr> |
| </table> |
| |
| <p>Note that the array has been extended to accommodate the new target, and |
| the previously unmapped source 5 is mapped to the unused target slot 2.</p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>x</code> - Ordinal of position to add to target</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="insertSource(int)">insertSource</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">void</span> <span class="memberName">insertSource</span>​(<span class="arguments">int x)</span></div> |
| <div class="block">Inserts into the sources. |
| |
| <p>Behavior is analogous to <a href="#insertTarget(int)"><code>insertTarget(int)</code></a>.</p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>x</code> - Ordinal of position to add to source</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="inverse()">inverse</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType"><a href="Permutation.html" title="class in org.apache.calcite.util">Permutation</a></span> <span class="memberName">inverse</span>()</div> |
| <div class="block">Returns the inverse permutation.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.SourceMapping.html#inverse()">inverse</a></code> in interface <code><a href="mapping/Mappings.SourceMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.SourceMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.TargetMapping.html#inverse()">inverse</a></code> in interface <code><a href="mapping/Mappings.TargetMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.TargetMapping</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="isIdentity()">isIdentity</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">boolean</span> <span class="memberName">isIdentity</span>()</div> |
| <div class="block">Returns whether this is the identity permutation.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mapping.html#isIdentity()">isIdentity</a></code> in interface <code><a href="mapping/Mapping.html" title="interface in org.apache.calcite.util.mapping">Mapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.SourceMapping.html#isIdentity()">isIdentity</a></code> in interface <code><a href="mapping/Mappings.SourceMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.SourceMapping</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getTarget(int)">getTarget</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">int</span> <span class="memberName">getTarget</span>​(<span class="arguments">int source)</span></div> |
| <div class="block">Returns the position that <code>source</code> is mapped to.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.FunctionMapping.html#getTarget(int)">getTarget</a></code> in interface <code><a href="mapping/Mappings.FunctionMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.FunctionMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.TargetMapping.html#getTarget(int)">getTarget</a></code> in interface <code><a href="mapping/Mappings.TargetMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.TargetMapping</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>source</code> - source</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>target</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getSource(int)">getSource</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">int</span> <span class="memberName">getSource</span>​(<span class="arguments">int target)</span></div> |
| <div class="block">Returns the position which maps to <code>target</code>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.SourceMapping.html#getSource(int)">getSource</a></code> in interface <code><a href="mapping/Mappings.SourceMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.SourceMapping</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>target</code> - target</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>source</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="hashCode()">hashCode</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">int</span> <span class="memberName">hashCode</span>()</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang" class="externalLink">hashCode</a></code> in class <code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="equals(java.lang.Object)">equals</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">boolean</span> <span class="memberName">equals</span>​(<span class="arguments"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> obj)</span></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang" class="externalLink">equals</a></code> in class <code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="iterator()">iterator</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType"><a href="https://docs.oracle.com/javase/9/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util" class="externalLink">Iterator</a><<a href="mapping/IntPair.html" title="class in org.apache.calcite.util.mapping">IntPair</a>></span> <span class="memberName">iterator</span>()</div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="mapping/Mapping.html#iterator()">Mapping</a></code></span></div> |
| <div class="block">Returns an iterator over the elements in this mapping. |
| |
| <p>This method is optional; implementations may throw |
| <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/UnsupportedOperationException.html?is-external=true" title="class or interface in java.lang" class="externalLink"><code>UnsupportedOperationException</code></a>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Iterable.html?is-external=true#iterator()" title="class or interface in java.lang" class="externalLink">iterator</a></code> in interface <code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Iterable</a><<a href="mapping/IntPair.html" title="class in org.apache.calcite.util.mapping">IntPair</a>></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mapping.html#iterator()">iterator</a></code> in interface <code><a href="mapping/Mapping.html" title="interface in org.apache.calcite.util.mapping">Mapping</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getSourceCount()">getSourceCount</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">int</span> <span class="memberName">getSourceCount</span>()</div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="mapping/Mapping.html#getSourceCount()">Mapping</a></code></span></div> |
| <div class="block">Returns the number of sources. Valid sources will be in the range 0 .. |
| sourceCount.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mapping.html#getSourceCount()">getSourceCount</a></code> in interface <code><a href="mapping/Mapping.html" title="interface in org.apache.calcite.util.mapping">Mapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.FunctionMapping.html#getSourceCount()">getSourceCount</a></code> in interface <code><a href="mapping/Mappings.FunctionMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.FunctionMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.SourceMapping.html#getSourceCount()">getSourceCount</a></code> in interface <code><a href="mapping/Mappings.SourceMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.SourceMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.TargetMapping.html#getSourceCount()">getSourceCount</a></code> in interface <code><a href="mapping/Mappings.TargetMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.TargetMapping</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getTargetCount()">getTargetCount</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">int</span> <span class="memberName">getTargetCount</span>()</div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="mapping/Mapping.html#getTargetCount()">Mapping</a></code></span></div> |
| <div class="block">Returns the number of targets. Valid targets will be in the range 0 .. |
| targetCount.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mapping.html#getTargetCount()">getTargetCount</a></code> in interface <code><a href="mapping/Mapping.html" title="interface in org.apache.calcite.util.mapping">Mapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.SourceMapping.html#getTargetCount()">getTargetCount</a></code> in interface <code><a href="mapping/Mappings.SourceMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.SourceMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.TargetMapping.html#getTargetCount()">getTargetCount</a></code> in interface <code><a href="mapping/Mappings.TargetMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.TargetMapping</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getMappingType()">getMappingType</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType"><a href="mapping/MappingType.html" title="enum in org.apache.calcite.util.mapping">MappingType</a></span> <span class="memberName">getMappingType</span>()</div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="mapping/Mappings.CoreMapping.html#getMappingType()">Mappings.CoreMapping</a></code></span></div> |
| <div class="block">Returns the mapping type.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mapping.html#getMappingType()">getMappingType</a></code> in interface <code><a href="mapping/Mapping.html" title="interface in org.apache.calcite.util.mapping">Mapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.CoreMapping.html#getMappingType()">getMappingType</a></code> in interface <code><a href="mapping/Mappings.CoreMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.CoreMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.FunctionMapping.html#getMappingType()">getMappingType</a></code> in interface <code><a href="mapping/Mappings.FunctionMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.FunctionMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.SourceMapping.html#getMappingType()">getMappingType</a></code> in interface <code><a href="mapping/Mappings.SourceMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.SourceMapping</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Mapping type</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getTargetOpt(int)">getTargetOpt</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">int</span> <span class="memberName">getTargetOpt</span>​(<span class="arguments">int source)</span></div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="mapping/Mappings.FunctionMapping.html#getTargetOpt(int)">Mappings.FunctionMapping</a></code></span></div> |
| <div class="block">Returns the target that a source maps to, or -1 if it is not mapped.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.FunctionMapping.html#getTargetOpt(int)">getTargetOpt</a></code> in interface <code><a href="mapping/Mappings.FunctionMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.FunctionMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.SourceMapping.html#getTargetOpt(int)">getTargetOpt</a></code> in interface <code><a href="mapping/Mappings.SourceMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.SourceMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.TargetMapping.html#getTargetOpt(int)">getTargetOpt</a></code> in interface <code><a href="mapping/Mappings.TargetMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.TargetMapping</a></code></dd> |
| </dl> |
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| <section class="detail"> |
| <h3><a id="getSourceOpt(int)">getSourceOpt</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">int</span> <span class="memberName">getSourceOpt</span>​(<span class="arguments">int target)</span></div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="mapping/Mappings.SourceMapping.html#getSourceOpt(int)">Mappings.SourceMapping</a></code></span></div> |
| <div class="block">Returns the source that a target maps to, or -1 if it is not mapped.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.SourceMapping.html#getSourceOpt(int)">getSourceOpt</a></code> in interface <code><a href="mapping/Mappings.SourceMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.SourceMapping</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="mapping/Mappings.TargetMapping.html#getSourceOpt(int)">getSourceOpt</a></code> in interface <code><a href="mapping/Mappings.TargetMapping.html" title="interface in org.apache.calcite.util.mapping">Mappings.TargetMapping</a></code></dd> |
| </dl> |
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| <h3><a id="setAll(org.apache.calcite.util.mapping.Mapping)">setAll</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">void</span> <span class="memberName">setAll</span>​(<span class="arguments"><a href="mapping/Mapping.html" title="interface in org.apache.calcite.util.mapping">Mapping</a> mapping)</span></div> |
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| <h3><a id="product(org.apache.calcite.util.Permutation)">product</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType"><a href="Permutation.html" title="class in org.apache.calcite.util">Permutation</a></span> <span class="memberName">product</span>​(<span class="arguments"><a href="Permutation.html" title="class in org.apache.calcite.util">Permutation</a> permutation)</span></div> |
| <div class="block">Returns the product of this Permutation with a given Permutation. Does |
| not modify this Permutation or <code>permutation</code>. |
| |
| <p>For example, perm.product(perm.inverse()) yields the identity.</div> |
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