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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.schema.impl</a></div> |
| <h1 title="Class ScalarFunctionImpl" class="title">Class ScalarFunctionImpl</h1> |
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| <div class="inheritance"><a href="ReflectiveFunctionBase.html" title="class in org.apache.calcite.schema.impl">org.apache.calcite.schema.impl.ReflectiveFunctionBase</a> |
| <div class="inheritance">org.apache.calcite.schema.impl.ScalarFunctionImpl</div> |
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| <section class="description"> |
| <dl> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><code><a href="../Function.html" title="interface in org.apache.calcite.schema">Function</a></code>, <code><a href="../ImplementableFunction.html" title="interface in org.apache.calcite.schema">ImplementableFunction</a></code>, <code><a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema">ScalarFunction</a></code></dd> |
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| <pre>public class <span class="typeNameLabel">ScalarFunctionImpl</span> |
| extends <a href="ReflectiveFunctionBase.html" title="class in org.apache.calcite.schema.impl">ReflectiveFunctionBase</a> |
| implements <a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema">ScalarFunction</a>, <a href="../ImplementableFunction.html" title="interface in org.apache.calcite.schema">ImplementableFunction</a></pre> |
| <div class="block">Implementation of <a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema"><code>ScalarFunction</code></a>.</div> |
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| <h2>Nested Class Summary</h2> |
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| <h2>Nested classes/interfaces inherited from class org.apache.calcite.schema.impl.<a href="ReflectiveFunctionBase.html" title="class in org.apache.calcite.schema.impl">ReflectiveFunctionBase</a></h2> |
| <a id="nested.classes.inherited.from.class.org.apache.calcite.schema.impl.ReflectiveFunctionBase"> |
| <!-- --> |
| </a><code><a href="ReflectiveFunctionBase.ParameterListBuilder.html" title="class in org.apache.calcite.schema.impl">ReflectiveFunctionBase.ParameterListBuilder</a></code></div> |
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| <h2>Field Summary</h2> |
| <div class="inheritedList"> |
| <h3>Fields inherited from class org.apache.calcite.schema.impl.<a href="ReflectiveFunctionBase.html" title="class in org.apache.calcite.schema.impl">ReflectiveFunctionBase</a></h3> |
| <a id="fields.inherited.from.class.org.apache.calcite.schema.impl.ReflectiveFunctionBase"> |
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| </a><code><a href="ReflectiveFunctionBase.html#method">method</a>, <a href="ReflectiveFunctionBase.html#parameters">parameters</a></code></div> |
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| <div role="tablist" aria-orientation="horizontal"><button role="tab" aria-selected="true" aria-controls="memberSummary_tabpanel" tabindex="0" onkeydown="switchTab(event)" id="t0" class="activeTableTab">All Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t1" class="tableTab" onclick="show(1);">Static Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t2" class="tableTab" onclick="show(2);">Instance Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t4" class="tableTab" onclick="show(8);">Concrete Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t6" class="tableTab" onclick="show(32);">Deprecated Methods</button></div> |
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| <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>static @Nullable <a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema">ScalarFunction</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#create(java.lang.Class,java.lang.String)">create</a></span>​(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><?> clazz, |
| <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> methodName)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates <a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema"><code>ScalarFunction</code></a> from given class.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i1"> |
| <td class="colFirst"><code>static <a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema">ScalarFunction</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#create(java.lang.reflect.Method)">create</a></span>​(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/reflect/Method.html?is-external=true" title="class or interface in java.lang.reflect" class="externalLink">Method</a> method)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates <a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema"><code>ScalarFunction</code></a> from given method.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i2"> |
| <td class="colFirst"><code>static com.google.common.collect.ImmutableMultimap<<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>,​<a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema">ScalarFunction</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createAll(java.lang.Class)">createAll</a></span>​(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><?> clazz)</code></th> |
| <td class="colLast"> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span></div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i3"> |
| <td class="colFirst"><code>static <a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema">ScalarFunction</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createUnsafe(java.lang.reflect.Method)">createUnsafe</a></span>​(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/reflect/Method.html?is-external=true" title="class or interface in java.lang.reflect" class="externalLink">Method</a> method)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates unsafe version of <a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema"><code>ScalarFunction</code></a> from any method.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i4"> |
| <td class="colFirst"><code>static com.google.common.collect.ImmutableMultimap<<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>,​<a href="../Function.html" title="interface in org.apache.calcite.schema">Function</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#functions(java.lang.Class)">functions</a></span>​(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><?> clazz)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a map of all functions based on the methods in a given class.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i5"> |
| <td class="colFirst"><code><a href="../../adapter/enumerable/CallImplementor.html" title="interface in org.apache.calcite.adapter.enumerable">CallImplementor</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getImplementor()">getImplementor</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns implementor that translates the function to linq4j expression.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i6"> |
| <td class="colFirst"><code><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getReturnType(org.apache.calcite.rel.type.RelDataTypeFactory)">getReturnType</a></span>​(<a href="../../rel/type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a> typeFactory)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the return type of this function, constructed using the given |
| type factory.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i7"> |
| <td class="colFirst"><code><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getReturnType(org.apache.calcite.rel.type.RelDataTypeFactory,org.apache.calcite.sql.SqlOperatorBinding)">getReturnType</a></span>​(<a href="../../rel/type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a> typeFactory, |
| <a href="../../sql/SqlOperatorBinding.html" title="class in org.apache.calcite.sql">SqlOperatorBinding</a> opBinding)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| </div> |
| <div class="inheritedList"> |
| <h3>Methods inherited from class org.apache.calcite.schema.impl.<a href="ReflectiveFunctionBase.html" title="class in org.apache.calcite.schema.impl">ReflectiveFunctionBase</a></h3> |
| <a id="methods.inherited.from.class.org.apache.calcite.schema.impl.ReflectiveFunctionBase"> |
| <!-- --> |
| </a><code><a href="ReflectiveFunctionBase.html#builder()">builder</a>, <a href="ReflectiveFunctionBase.html#getParameters()">getParameters</a></code></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> |
| <a id="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a><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>, <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>, <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#hashCode()" title="class or interface in java.lang" class="externalLink">hashCode</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#toString()" title="class or interface in java.lang" class="externalLink">toString</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 org.apache.calcite.schema.<a href="../Function.html" title="interface in org.apache.calcite.schema">Function</a></h3> |
| <a id="methods.inherited.from.class.org.apache.calcite.schema.Function"> |
| <!-- --> |
| </a><code><a href="../Function.html#getParameters()">getParameters</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="blockList"> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li class="blockList"> |
| <section class="methodDetails"><a id="method.detail"> |
| <!-- --> |
| </a> |
| <h2>Method Details</h2> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="createAll(java.lang.Class)">createAll</a></h3> |
| <div class="memberSignature"><span class="annotations"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang" class="externalLink">@Deprecated</a> |
| </span><span class="modifiers">public static</span> <span class="returnType">com.google.common.collect.ImmutableMultimap<<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>,​<a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema">ScalarFunction</a>></span> <span class="memberName">createAll</span>​(<span class="arguments"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><?> clazz)</span></div> |
| <div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span></div> |
| <div class="block">Creates <a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema"><code>ScalarFunction</code></a> for each method in |
| a given class.</div> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="functions(java.lang.Class)">functions</a></h3> |
| <div class="memberSignature"><span class="modifiers">public static</span> <span class="returnType">com.google.common.collect.ImmutableMultimap<<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>,​<a href="../Function.html" title="interface in org.apache.calcite.schema">Function</a>></span> <span class="memberName">functions</span>​(<span class="arguments"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><?> clazz)</span></div> |
| <div class="block">Returns a map of all functions based on the methods in a given class. |
| It is keyed by method names and maps to both |
| <a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema"><code>ScalarFunction</code></a> |
| and <a href="../TableFunction.html" title="interface in org.apache.calcite.schema"><code>TableFunction</code></a>.</div> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="create(java.lang.Class,java.lang.String)">create</a></h3> |
| <div class="memberSignature"><span class="modifiers">public static</span> <span class="returnType">@Nullable <a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema">ScalarFunction</a></span> <span class="memberName">create</span>​(<span class="arguments"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a><?> clazz, |
| <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> methodName)</span></div> |
| <div class="block">Creates <a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema"><code>ScalarFunction</code></a> from given class. |
| |
| <p>If a method of the given name is not found or it does not suit, |
| returns <code>null</code>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>clazz</code> - class that is used to implement the function</dd> |
| <dd><code>methodName</code> - Method name (typically "eval")</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>created <a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema"><code>ScalarFunction</code></a> or null</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="create(java.lang.reflect.Method)">create</a></h3> |
| <div class="memberSignature"><span class="modifiers">public static</span> <span class="returnType"><a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema">ScalarFunction</a></span> <span class="memberName">create</span>​(<span class="arguments"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/reflect/Method.html?is-external=true" title="class or interface in java.lang.reflect" class="externalLink">Method</a> method)</span></div> |
| <div class="block">Creates <a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema"><code>ScalarFunction</code></a> from given method. |
| When <code>eval</code> method does not suit, <code>null</code> is returned.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>method</code> - method that is used to implement the function</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>created <a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema"><code>ScalarFunction</code></a> or null</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="createUnsafe(java.lang.reflect.Method)">createUnsafe</a></h3> |
| <div class="memberSignature"><span class="modifiers">public static</span> <span class="returnType"><a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema">ScalarFunction</a></span> <span class="memberName">createUnsafe</span>​(<span class="arguments"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/reflect/Method.html?is-external=true" title="class or interface in java.lang.reflect" class="externalLink">Method</a> method)</span></div> |
| <div class="block">Creates unsafe version of <a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema"><code>ScalarFunction</code></a> from any method. The method |
| does not need to be static or belong to a class with default constructor. It is |
| the responsibility of the underlying engine to initialize the UDF object that |
| contain the method.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>method</code> - method that is used to implement the function</dd> |
| </dl> |
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| <h3><a id="getReturnType(org.apache.calcite.rel.type.RelDataTypeFactory)">getReturnType</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span> <span class="memberName">getReturnType</span>​(<span class="arguments"><a href="../../rel/type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a> typeFactory)</span></div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../ScalarFunction.html#getReturnType(org.apache.calcite.rel.type.RelDataTypeFactory)">ScalarFunction</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">Specified by:</span></dt> |
| <dd><code><a href="../ScalarFunction.html#getReturnType(org.apache.calcite.rel.type.RelDataTypeFactory)">getReturnType</a></code> in interface <code><a href="../ScalarFunction.html" title="interface in org.apache.calcite.schema">ScalarFunction</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>typeFactory</code> - Type factory</dd> |
| </dl> |
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| <h3><a id="getImplementor()">getImplementor</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType"><a href="../../adapter/enumerable/CallImplementor.html" title="interface in org.apache.calcite.adapter.enumerable">CallImplementor</a></span> <span class="memberName">getImplementor</span>()</div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../ImplementableFunction.html#getImplementor()">ImplementableFunction</a></code></span></div> |
| <div class="block">Returns implementor that translates the function to linq4j expression.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../ImplementableFunction.html#getImplementor()">getImplementor</a></code> in interface <code><a href="../ImplementableFunction.html" title="interface in org.apache.calcite.schema">ImplementableFunction</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>implementor that translates the function to linq4j expression.</dd> |
| </dl> |
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| <h3><a id="getReturnType(org.apache.calcite.rel.type.RelDataTypeFactory,org.apache.calcite.sql.SqlOperatorBinding)">getReturnType</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span> <span class="memberName">getReturnType</span>​(<span class="arguments"><a href="../../rel/type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a> typeFactory, |
| <a href="../../sql/SqlOperatorBinding.html" title="class in org.apache.calcite.sql">SqlOperatorBinding</a> opBinding)</span></div> |
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