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| <h1 title="程序包" class="title">程序包 org.apache.calcite.util.mapping</h1> |
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| <div class="block">Support for algebraic maps.</div> |
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| <p>请参阅: <a href="#package.description">说明</a></p> |
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| <td class="colFirst"><a href="../../../../../org/apache/calcite/util/mapping/Mapping.html" title="org.apache.calcite.util.mapping中的接口">Mapping</a></td> |
| <td class="colLast"> |
| <div class="block">A <dfn>Mapping</dfn> is a relationship between a source domain to target |
| domain of integers.</div> |
| </td> |
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| <td class="colFirst"><a href="../../../../../org/apache/calcite/util/mapping/Mappings.CoreMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.CoreMapping</a></td> |
| <td class="colLast"> |
| <div class="block">Core interface of all mappings.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/util/mapping/Mappings.FunctionMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.FunctionMapping</a></td> |
| <td class="colLast"> |
| <div class="block">Mapping where every source has a target.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.SourceMapping</a></td> |
| <td class="colLast"> |
| <div class="block">Mapping suitable for sourcing columns.</div> |
| </td> |
| </tr> |
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| <td class="colFirst"><a href="../../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html" title="org.apache.calcite.util.mapping中的接口">Mappings.TargetMapping</a></td> |
| <td class="colLast"> |
| <div class="block">Mapping suitable for mapping columns to a target.</div> |
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| <td class="colFirst"><a href="../../../../../org/apache/calcite/util/mapping/AbstractSourceMapping.html" title="org.apache.calcite.util.mapping中的类">AbstractSourceMapping</a></td> |
| <td class="colLast"> |
| <div class="block">Simple implementation of |
| <a href="../../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html" title="org.apache.calcite.util.mapping中的接口"><code>Mappings.TargetMapping</code></a> where the |
| number of sources and targets are specified as constructor parameters and you |
| just need to implement one method,</div> |
| </td> |
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| <td class="colFirst"><a href="../../../../../org/apache/calcite/util/mapping/AbstractTargetMapping.html" title="org.apache.calcite.util.mapping中的类">AbstractTargetMapping</a></td> |
| <td class="colLast"> |
| <div class="block">Simple implementation of |
| <a href="../../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html" title="org.apache.calcite.util.mapping中的接口"><code>Mappings.TargetMapping</code></a> where the |
| number of sources and targets are specified as constructor parameters and you |
| just need to implement one method,</div> |
| </td> |
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| <td class="colFirst"><a href="../../../../../org/apache/calcite/util/mapping/IntPair.html" title="org.apache.calcite.util.mapping中的类">IntPair</a></td> |
| <td class="colLast"> |
| <div class="block">An immutable pair of integers.</div> |
| </td> |
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| <td class="colFirst"><a href="../../../../../org/apache/calcite/util/mapping/Mappings.html" title="org.apache.calcite.util.mapping中的类">Mappings</a></td> |
| <td class="colLast"> |
| <div class="block">Utility functions related to mappings.</div> |
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| <td class="colFirst"><a href="../../../../../org/apache/calcite/util/mapping/Mappings.AbstractMapping.html" title="org.apache.calcite.util.mapping中的类">Mappings.AbstractMapping</a></td> |
| <td class="colLast"> |
| <div class="block">Abstract implementation of <a href="../../../../../org/apache/calcite/util/mapping/Mapping.html" title="org.apache.calcite.util.mapping中的接口"><code>Mapping</code></a>.</div> |
| </td> |
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| <td class="colFirst"><a href="../../../../../org/apache/calcite/util/mapping/Mappings.FiniteAbstractMapping.html" title="org.apache.calcite.util.mapping中的类">Mappings.FiniteAbstractMapping</a></td> |
| <td class="colLast"> |
| <div class="block">Abstract implementation of mapping where both source and target |
| domains are finite.</div> |
| </td> |
| </tr> |
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| <td class="colFirst"><a href="../../../../../org/apache/calcite/util/mapping/Mappings.IdentityMapping.html" title="org.apache.calcite.util.mapping中的类">Mappings.IdentityMapping</a></td> |
| <td class="colLast"> |
| <div class="block">The identity mapping, of a given size, or infinite.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/util/mapping/Mappings.OverridingSourceMapping.html" title="org.apache.calcite.util.mapping中的类">Mappings.OverridingSourceMapping</a></td> |
| <td class="colLast"> |
| <div class="block">Source mapping that returns the same result as a parent |
| <a href="../../../../../org/apache/calcite/util/mapping/Mappings.SourceMapping.html" title="org.apache.calcite.util.mapping中的接口"><code>Mappings.SourceMapping</code></a> except for specific overriding elements.</div> |
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| <td class="colFirst"><a href="../../../../../org/apache/calcite/util/mapping/Mappings.OverridingTargetMapping.html" title="org.apache.calcite.util.mapping中的类">Mappings.OverridingTargetMapping</a></td> |
| <td class="colLast"> |
| <div class="block">Target mapping that returns the same result as a parent |
| <a href="../../../../../org/apache/calcite/util/mapping/Mappings.TargetMapping.html" title="org.apache.calcite.util.mapping中的接口"><code>Mappings.TargetMapping</code></a> except for specific overriding elements.</div> |
| </td> |
| </tr> |
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| <td class="colFirst"><a href="../../../../../org/apache/calcite/util/mapping/Mappings.PartialMapping.html" title="org.apache.calcite.util.mapping中的类">Mappings.PartialMapping</a></td> |
| <td class="colLast"> |
| <div class="block">A mapping where a source has at most one target, and every target has at |
| most one source.</div> |
| </td> |
| </tr> |
| </tbody> |
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| <td class="colFirst"><a href="../../../../../org/apache/calcite/util/mapping/MappingType.html" title="org.apache.calcite.util.mapping中的枚举">MappingType</a></td> |
| <td class="colLast"> |
| <div class="block">Describes the type of a mapping, from the most general |
| <a href="../../../../../org/apache/calcite/util/mapping/MappingType.html#MULTI_FUNCTION"><code>MappingType.MULTI_FUNCTION</code></a> (every element in the source and target domain can |
| participate in many mappings) to the most retricted <a href="../../../../../org/apache/calcite/util/mapping/MappingType.html#BIJECTION"><code>MappingType.BIJECTION</code></a> (every |
| element in the source and target domain must be paired with precisely one |
| element in the other domain).</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
| <li class="blockList"> |
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| <tr> |
| <th class="colFirst" scope="col">异常错误</th> |
| <th class="colLast" scope="col">说明</th> |
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| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/util/mapping/Mappings.NoElementException.html" title="org.apache.calcite.util.mapping中的类">Mappings.NoElementException</a></td> |
| <td class="colLast"> |
| <div class="block">Thrown when a mapping is expected to return one element but returns none.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/util/mapping/Mappings.TooManyElementsException.html" title="org.apache.calcite.util.mapping中的类">Mappings.TooManyElementsException</a></td> |
| <td class="colLast"> |
| <div class="block">Thrown when a mapping is expected to return one element but returns |
| several.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
| </ul> |
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| <h2 title="程序包org.apache.calcite.util.mapping的说明">程序包org.apache.calcite.util.mapping的说明</h2> |
| <div class="block">Support for algebraic maps.</div> |
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