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| <h1 title="程序包" class="title">程序包 org.apache.calcite.rel.type</h1> |
| <div class="docSummary"> |
| <div class="block">Defines a type system for relational expressions.</div> |
| </div> |
| <p>请参阅: <a href="#package.description">说明</a></p> |
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| <table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="接口概要表, 列表接口和解释"> |
| <caption><span>接口概要</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">接口</th> |
| <th class="colLast" scope="col">说明</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a></td> |
| <td class="colLast"> |
| <div class="block">RelDataType represents the type of a scalar expression or entire row returned |
| from a relational expression.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelDataTypeFactory.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeFactory</a></td> |
| <td class="colLast"> |
| <div class="block">RelDataTypeFactory is a factory for datatype descriptors.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelDataTypeFactory.FieldInfo.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeFactory.FieldInfo</a></td> |
| <td class="colLast">已过时</td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelDataTypeFamily.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeFamily</a></td> |
| <td class="colLast"> |
| <div class="block">RelDataTypeFamily represents a family of related types.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelDataTypeField.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeField</a></td> |
| <td class="colLast"> |
| <div class="block">RelDataTypeField represents the definition of a field in a structured |
| <a href="../../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口"><code>RelDataType</code></a>.</div> |
| </td> |
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| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelDataTypePrecedenceList.html" title="org.apache.calcite.rel.type中的接口">RelDataTypePrecedenceList</a></td> |
| <td class="colLast"> |
| <div class="block">RelDataTypePrecedenceList defines a type precedence list for a particular |
| type.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelDataTypeSystem.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeSystem</a></td> |
| <td class="colLast"> |
| <div class="block">Type system.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelProtoDataType.html" title="org.apache.calcite.rel.type中的接口">RelProtoDataType</a></td> |
| <td class="colLast"> |
| <div class="block">Can be converted into a <a href="../../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口"><code>RelDataType</code></a> given a |
| <a href="../../../../../org/apache/calcite/rel/type/RelDataTypeFactory.html" title="org.apache.calcite.rel.type中的接口"><code>RelDataTypeFactory</code></a>.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
| <li class="blockList"> |
| <table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="类概要表, 列表类和解释"> |
| <caption><span>类概要</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">类</th> |
| <th class="colLast" scope="col">说明</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/DelegatingTypeSystem.html" title="org.apache.calcite.rel.type中的类">DelegatingTypeSystem</a></td> |
| <td class="colLast"> |
| <div class="block">Implementation of <a href="../../../../../org/apache/calcite/rel/type/RelDataTypeSystem.html" title="org.apache.calcite.rel.type中的接口"><code>RelDataTypeSystem</code></a> |
| that sends all methods to an underlying object.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/DynamicRecordType.html" title="org.apache.calcite.rel.type中的类">DynamicRecordType</a></td> |
| <td class="colLast"> |
| <div class="block">Specific type of RelRecordType that corresponds to a dynamic table, |
| where columns are created as they are requested.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/DynamicRecordTypeImpl.html" title="org.apache.calcite.rel.type中的类">DynamicRecordTypeImpl</a></td> |
| <td class="colLast"> |
| <div class="block">Implementation of <a href="../../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口"><code>RelDataType</code></a> for a dynamic table.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelCrossType.html" title="org.apache.calcite.rel.type中的类">RelCrossType</a></td> |
| <td class="colLast"> |
| <div class="block">Type of the cartesian product of two or more sets of records.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelDataTypeFactory.Builder.html" title="org.apache.calcite.rel.type中的类">RelDataTypeFactory.Builder</a></td> |
| <td class="colLast"> |
| <div class="block">Fluid API to build a list of fields.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelDataTypeFactory.FieldInfoBuilder.html" title="org.apache.calcite.rel.type中的类">RelDataTypeFactory.FieldInfoBuilder</a></td> |
| <td class="colLast">已过时</td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelDataTypeFactoryImpl.html" title="org.apache.calcite.rel.type中的类">RelDataTypeFactoryImpl</a></td> |
| <td class="colLast"> |
| <div class="block">Abstract base for implementations of <a href="../../../../../org/apache/calcite/rel/type/RelDataTypeFactory.html" title="org.apache.calcite.rel.type中的接口"><code>RelDataTypeFactory</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelDataTypeField.ToFieldIndex.html" title="org.apache.calcite.rel.type中的类">RelDataTypeField.ToFieldIndex</a></td> |
| <td class="colLast">已过时 |
| <div class="block"><span class="deprecationComment">Use <code>RelDataTypeField::getIndex</code></span></div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelDataTypeField.ToFieldName.html" title="org.apache.calcite.rel.type中的类">RelDataTypeField.ToFieldName</a></td> |
| <td class="colLast">已过时 |
| <div class="block"><span class="deprecationComment">Use <code>RelDataTypeField::getName</code></span></div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelDataTypeFieldImpl.html" title="org.apache.calcite.rel.type中的类">RelDataTypeFieldImpl</a></td> |
| <td class="colLast"> |
| <div class="block">Default implementation of <a href="../../../../../org/apache/calcite/rel/type/RelDataTypeField.html" title="org.apache.calcite.rel.type中的接口"><code>RelDataTypeField</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelDataTypeImpl.html" title="org.apache.calcite.rel.type中的类">RelDataTypeImpl</a></td> |
| <td class="colLast"> |
| <div class="block">RelDataTypeImpl is an abstract base for implementations of |
| <a href="../../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口"><code>RelDataType</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelDataTypeSystemImpl.html" title="org.apache.calcite.rel.type中的类">RelDataTypeSystemImpl</a></td> |
| <td class="colLast"> |
| <div class="block">Default implementation of |
| <a href="../../../../../org/apache/calcite/rel/type/RelDataTypeSystem.html" title="org.apache.calcite.rel.type中的接口"><code>RelDataTypeSystem</code></a>, |
| providing parameters from the SQL standard.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelRecordType.html" title="org.apache.calcite.rel.type中的类">RelRecordType</a></td> |
| <td class="colLast"> |
| <div class="block">RelRecordType represents a structured type having named fields.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
| <li class="blockList"> |
| <table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="枚举概要表, 列表枚举和解释"> |
| <caption><span>枚举概要</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">枚举</th> |
| <th class="colLast" scope="col">说明</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/RelDataTypeComparability.html" title="org.apache.calcite.rel.type中的枚举">RelDataTypeComparability</a></td> |
| <td class="colLast"> |
| <div class="block">RelDataTypeComparability is an enumeration of the categories of comparison |
| operators which types may support.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/calcite/rel/type/StructKind.html" title="org.apache.calcite.rel.type中的枚举">StructKind</a></td> |
| <td class="colLast"> |
| <div class="block">Describes a policy for resolving fields in record types.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
| </ul> |
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| </a> |
| <h2 title="程序包org.apache.calcite.rel.type的说明">程序包org.apache.calcite.rel.type的说明</h2> |
| <div class="block">Defines a type system for relational expressions.</div> |
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