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| <div class="subTitle">org.apache.calcite.schema.impl</div> |
| <h2 title="类 AggregateFunctionImpl" class="title">类 AggregateFunctionImpl</h2> |
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| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">java.lang.Object</a></li> |
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| <li>org.apache.calcite.schema.impl.AggregateFunctionImpl</li> |
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| <dl> |
| <dt>所有已实现的接口:</dt> |
| <dd><a href="../../../../../org/apache/calcite/schema/AggregateFunction.html" title="org.apache.calcite.schema中的接口">AggregateFunction</a>, <a href="../../../../../org/apache/calcite/schema/Function.html" title="org.apache.calcite.schema中的接口">Function</a>, <a href="../../../../../org/apache/calcite/schema/ImplementableAggFunction.html" title="org.apache.calcite.schema中的接口">ImplementableAggFunction</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public class <span class="typeNameLabel">AggregateFunctionImpl</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a> |
| implements <a href="../../../../../org/apache/calcite/schema/AggregateFunction.html" title="org.apache.calcite.schema中的接口">AggregateFunction</a>, <a href="../../../../../org/apache/calcite/schema/ImplementableAggFunction.html" title="org.apache.calcite.schema中的接口">ImplementableAggFunction</a></pre> |
| <div class="block">Implementation of <a href="../../../../../org/apache/calcite/schema/AggregateFunction.html" title="org.apache.calcite.schema中的接口"><code>AggregateFunction</code></a> via user-defined class. |
| The class should implement <code>A init()</code>, <code>A add(A, V)</code>, and |
| <code>R result(A)</code> methods. |
| All the methods should be either static or instance. |
| Bonus point: when using non-static implementation, the aggregate object is |
| reused through the calculation, thus it can have aggregation-related state.</div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- =========== FIELD SUMMARY =========== --> |
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| <li class="blockList"><a name="field.summary"> |
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| </a> |
| <h3>字段概要</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="字段概要表, 列表字段和解释"> |
| <caption><span>字段</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">限定符和类型</th> |
| <th class="colLast" scope="col">字段和说明</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="java.lang中的类或接口">Class</a><?></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/schema/impl/AggregateFunctionImpl.html#accumulatorType">accumulatorType</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Method.html?is-external=true" title="java.lang.reflect中的类或接口">Method</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/schema/impl/AggregateFunctionImpl.html#addMethod">addMethod</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="java.lang中的类或接口">Class</a><?></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/schema/impl/AggregateFunctionImpl.html#declaringClass">declaringClass</a></span></code> </td> |
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| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Method.html?is-external=true" title="java.lang.reflect中的类或接口">Method</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/schema/impl/AggregateFunctionImpl.html#initMethod">initMethod</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/schema/impl/AggregateFunctionImpl.html#isStatic">isStatic</a></span></code> </td> |
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| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Method.html?is-external=true" title="java.lang.reflect中的类或接口">Method</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/schema/impl/AggregateFunctionImpl.html#mergeMethod">mergeMethod</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Method.html?is-external=true" title="java.lang.reflect中的类或接口">Method</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/schema/impl/AggregateFunctionImpl.html#resultMethod">resultMethod</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="java.lang中的类或接口">Class</a><?></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/schema/impl/AggregateFunctionImpl.html#resultType">resultType</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>com.google.common.collect.ImmutableList<<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="java.lang中的类或接口">Class</a><?>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/schema/impl/AggregateFunctionImpl.html#valueTypes">valueTypes</a></span></code> </td> |
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| </ul> |
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| <h3>方法概要</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="方法概要表, 列表方法和解释"> |
| <caption><span id="t0" class="activeTableTab"><span>所有方法</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">静态方法</a></span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">实例方法</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">具体方法</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">限定符和类型</th> |
| <th class="colLast" scope="col">方法和说明</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/schema/impl/AggregateFunctionImpl.html" title="org.apache.calcite.schema.impl中的类">AggregateFunctionImpl</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/schema/impl/AggregateFunctionImpl.html#create-java.lang.Class-">create</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="java.lang中的类或接口">Class</a><?> clazz)</code> |
| <div class="block">Creates an aggregate function, or returns null.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/adapter/enumerable/AggImplementor.html" title="org.apache.calcite.adapter.enumerable中的接口">AggImplementor</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/schema/impl/AggregateFunctionImpl.html#getImplementor-boolean-">getImplementor</a></span>(boolean windowContext)</code> |
| <div class="block">Returns implementor that translates the function to linq4j expression.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="java.util中的类或接口">List</a><<a href="../../../../../org/apache/calcite/schema/FunctionParameter.html" title="org.apache.calcite.schema中的接口">FunctionParameter</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/schema/impl/AggregateFunctionImpl.html#getParameters--">getParameters</a></span>()</code> |
| <div class="block">Returns the parameters of this function.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/schema/impl/AggregateFunctionImpl.html#getReturnType-org.apache.calcite.rel.type.RelDataTypeFactory-">getReturnType</a></span>(<a href="../../../../../org/apache/calcite/rel/type/RelDataTypeFactory.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeFactory</a> typeFactory)</code> |
| <div class="block">Returns the return type of this function, constructed using the given |
| type factory.</div> |
| </td> |
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| </table> |
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| <h3>从类继承的方法 java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="java.lang中的类或接口">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="java.lang中的类或接口">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="java.lang中的类或接口">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="java.lang中的类或接口">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="java.lang中的类或接口">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="java.lang中的类或接口">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="java.lang中的类或接口">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="java.lang中的类或接口">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="java.lang中的类或接口">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="java.lang中的类或接口">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="java.lang中的类或接口">wait</a></code></li> |
| </ul> |
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| </ul> |
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| <pre>public final <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Method.html?is-external=true" title="java.lang.reflect中的类或接口">Method</a> initMethod</pre> |
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| <pre>public final <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Method.html?is-external=true" title="java.lang.reflect中的类或接口">Method</a> addMethod</pre> |
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| <pre>public final <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Method.html?is-external=true" title="java.lang.reflect中的类或接口">Method</a> mergeMethod</pre> |
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| <pre>public final com.google.common.collect.ImmutableList<<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="java.lang中的类或接口">Class</a><?>> valueTypes</pre> |
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| <pre>public final <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="java.lang中的类或接口">Class</a><?> declaringClass</pre> |
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| <h3>方法详细资料</h3> |
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| <h4>create</h4> |
| <pre>public static <a href="../../../../../org/apache/calcite/schema/impl/AggregateFunctionImpl.html" title="org.apache.calcite.schema.impl中的类">AggregateFunctionImpl</a> create(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="java.lang中的类或接口">Class</a><?> clazz)</pre> |
| <div class="block">Creates an aggregate function, or returns null.</div> |
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| <pre>public <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="java.util中的类或接口">List</a><<a href="../../../../../org/apache/calcite/schema/FunctionParameter.html" title="org.apache.calcite.schema中的接口">FunctionParameter</a>> getParameters()</pre> |
| <div class="block"><span class="descfrmTypeLabel">从接口复制的说明: <code><a href="../../../../../org/apache/calcite/schema/Function.html#getParameters--">Function</a></code></span></div> |
| <div class="block">Returns the parameters of this function.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../../org/apache/calcite/schema/Function.html#getParameters--">getParameters</a></code> 在接口中 <code><a href="../../../../../org/apache/calcite/schema/Function.html" title="org.apache.calcite.schema中的接口">Function</a></code></dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>Parameters; never null</dd> |
| </dl> |
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| <pre>public <a href="../../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a> getReturnType(<a href="../../../../../org/apache/calcite/rel/type/RelDataTypeFactory.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeFactory</a> typeFactory)</pre> |
| <div class="block"><span class="descfrmTypeLabel">从接口复制的说明: <code><a href="../../../../../org/apache/calcite/schema/AggregateFunction.html#getReturnType-org.apache.calcite.rel.type.RelDataTypeFactory-">AggregateFunction</a></code></span></div> |
| <div class="block">Returns the return type of this function, constructed using the given |
| type factory.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../../org/apache/calcite/schema/AggregateFunction.html#getReturnType-org.apache.calcite.rel.type.RelDataTypeFactory-">getReturnType</a></code> 在接口中 <code><a href="../../../../../org/apache/calcite/schema/AggregateFunction.html" title="org.apache.calcite.schema中的接口">AggregateFunction</a></code></dd> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>typeFactory</code> - Type factory</dd> |
| </dl> |
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| <a name="getImplementor-boolean-"> |
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| <h4>getImplementor</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/adapter/enumerable/AggImplementor.html" title="org.apache.calcite.adapter.enumerable中的接口">AggImplementor</a> getImplementor(boolean windowContext)</pre> |
| <div class="block"><span class="descfrmTypeLabel">从接口复制的说明: <code><a href="../../../../../org/apache/calcite/schema/ImplementableAggFunction.html#getImplementor-boolean-">ImplementableAggFunction</a></code></span></div> |
| <div class="block">Returns implementor that translates the function to linq4j expression.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../../org/apache/calcite/schema/ImplementableAggFunction.html#getImplementor-boolean-">getImplementor</a></code> 在接口中 <code><a href="../../../../../org/apache/calcite/schema/ImplementableAggFunction.html" title="org.apache.calcite.schema中的接口">ImplementableAggFunction</a></code></dd> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>windowContext</code> - true when aggregate is used in window context</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>implementor that translates the function to linq4j expression.</dd> |
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