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| <li>Summary: </li> |
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| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.calcite.adapter.enumerable</a></div> |
| <h1 title="Class EnumUtils" class="title">Class EnumUtils</h1> |
| </div> |
| <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a> |
| <div class="inheritance">org.apache.calcite.adapter.enumerable.EnumUtils</div> |
| </div> |
| <section class="class-description" id="class-description"> |
| <hr> |
| <div class="type-signature"><span class="modifiers">public class </span><span class="element-name type-name-label">EnumUtils</span> |
| <span class="extends-implements">extends <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></span></div> |
| <div class="block">Utilities for generating programs in the Enumerable (functional) |
| style.</div> |
| </section> |
| <section class="summary"> |
| <ul class="summary-list"> |
| <!-- =========== FIELD SUMMARY =========== --> |
| <li> |
| <section class="field-summary" id="field-summary"> |
| <h2>Field Summary</h2> |
| <div class="caption"><span>Fields</span></div> |
| <div class="summary-table three-column-summary"> |
| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Field</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color"><code>static final <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>></code></div> |
| <div class="col-second even-row-color"><code><a href="#LEFT_RIGHT" class="member-name-link">LEFT_RIGHT</a></code></div> |
| <div class="col-last even-row-color"> </div> |
| </div> |
| </section> |
| </li> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <li> |
| <section class="method-summary" id="method-summary"> |
| <h2>Method Summary</h2> |
| <div id="method-summary-table"> |
| <div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab1" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab1', 3)" class="table-tab">Static Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button></div> |
| <div id="method-summary-table.tabpanel" role="tabpanel"> |
| <div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0"> |
| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Method</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="../../linq4j/tree/MethodCallExpression.html" title="class in org.apache.calcite.linq4j.tree">MethodCallExpression</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#call(org.apache.calcite.linq4j.tree.Expression,java.lang.Class,java.lang.String,java.util.List)" class="member-name-link">call</a><wbr>(@Nullable <a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> targetExpression, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Class.html" title="class or interface in java.lang" class="external-link">Class</a> clazz, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a> methodName, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><? extends <a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>> arguments)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">A more powerful version of |
| <a href="../../linq4j/tree/Expressions.html#call(java.lang.reflect.Type,java.lang.String,java.lang.Iterable)"><code>Expressions.call(Type, String, Iterable)</code></a>.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#convert(org.apache.calcite.linq4j.tree.Expression,java.lang.reflect.Type)" class="member-name-link">convert</a><wbr>(<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> operand, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/reflect/Type.html" title="class or interface in java.lang.reflect" class="external-link">Type</a> toType)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">Convert <code>operand</code> to target type <code>toType</code>.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#convert(org.apache.calcite.linq4j.tree.Expression,java.lang.reflect.Type,java.lang.reflect.Type)" class="member-name-link">convert</a><wbr>(<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> operand, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/reflect/Type.html" title="class or interface in java.lang.reflect" class="external-link">Type</a> fromType, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/reflect/Type.html" title="class or interface in java.lang.reflect" class="external-link">Type</a> toType)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">Convert <code>operand</code> to target type <code>toType</code>.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <T> @Nullable T</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#evaluate(java.lang.Object,java.lang.Class)" class="member-name-link">evaluate</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a> o, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Class.html" title="class or interface in java.lang" class="external-link">Class</a><T> clazz)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">Converts a value to a given class.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static @Nullable <a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#generateCollatorExpression(org.apache.calcite.sql.SqlCollation)" class="member-name-link">generateCollatorExpression</a><wbr>(@Nullable <a href="../../sql/SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a> collation)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="../../linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a><@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>[]></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#hopping(org.apache.calcite.linq4j.Enumerator,int,long,long,long)" class="member-name-link">hopping</a><wbr>(<a href="../../linq4j/Enumerator.html" title="interface in org.apache.calcite.linq4j">Enumerator</a><@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>[]> inputEnumerator, |
| int indexOfWatermarkedColumn, |
| long emitFrequency, |
| long windowSize, |
| long offset)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">Create enumerable implementation that applies hopping on each element from the input |
| enumerator and produces at least one element for each input element.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="../../linq4j/tree/MethodDeclaration.html" title="class in org.apache.calcite.linq4j.tree">MethodDeclaration</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#overridingMethodDecl(java.lang.reflect.Method,java.lang.Iterable,org.apache.calcite.linq4j.tree.BlockStatement)" class="member-name-link">overridingMethodDecl</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/reflect/Method.html" title="class or interface in java.lang.reflect" class="external-link">Method</a> method, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Iterable.html" title="class or interface in java.lang" class="external-link">Iterable</a><<a href="../../linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a>> parameters, |
| <a href="../../linq4j/tree/BlockStatement.html" title="class in org.apache.calcite.linq4j.tree">BlockStatement</a> body)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">Declares a method that overrides another method.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="../../linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a><@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>[]></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#sessionize(org.apache.calcite.linq4j.Enumerator,int,int,long)" class="member-name-link">sessionize</a><wbr>(<a href="../../linq4j/Enumerator.html" title="interface in org.apache.calcite.linq4j">Enumerator</a><@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>[]> inputEnumerator, |
| int indexOfWatermarkedColumn, |
| int indexOfKeyColumn, |
| long gap)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">Creates enumerable implementation that applies sessionization to elements from the input |
| enumerator based on a specified key.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/function/Function.html" title="class or interface in java.util.function" class="external-link">Function</a><@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>[],<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>>></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#toExternal(java.util.List,java.util.TimeZone)" class="member-name-link">toExternal</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>> types, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/TimeZone.html" title="class or interface in java.util" class="external-link">TimeZone</a> timeZone)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">Returns a function that converts an array of internal values to |
| a list of external values.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/function/Function.html" title="class or interface in java.util.function" class="external-link">Function</a><<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#toExternal(org.apache.calcite.rel.type.RelDataType,java.util.TimeZone)" class="member-name-link">toExternal</a><wbr>(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a> type, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/TimeZone.html" title="class or interface in java.util" class="external-link">TimeZone</a> timeZone)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">Returns a function that converts an internal value to an external |
| value.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <TSource,<wbr> |
| TResult><br><a href="../../linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a><TResult></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#tumbling(org.apache.calcite.linq4j.Enumerable,org.apache.calcite.linq4j.function.Function1)" class="member-name-link">tumbling</a><wbr>(<a href="../../linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a><TSource> inputEnumerable, |
| <a href="../../linq4j/function/Function1.html" title="interface in org.apache.calcite.linq4j.function">Function1</a><TSource,<wbr>TResult> outSelector)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">Apply tumbling per row from the enumerable input.</div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class java.lang.<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3> |
| <code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link">toString</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ============ FIELD DETAIL =========== --> |
| <li> |
| <section class="field-details" id="field-detail"> |
| <h2>Field Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="LEFT_RIGHT"> |
| <h3>LEFT_RIGHT</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>></span> <span class="element-name">LEFT_RIGHT</span></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li> |
| <section class="method-details" id="method-detail"> |
| <h2>Method Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="overridingMethodDecl(java.lang.reflect.Method,java.lang.Iterable,org.apache.calcite.linq4j.tree.BlockStatement)"> |
| <h3>overridingMethodDecl</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type"><a href="../../linq4j/tree/MethodDeclaration.html" title="class in org.apache.calcite.linq4j.tree">MethodDeclaration</a></span> <span class="element-name">overridingMethodDecl</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/reflect/Method.html" title="class or interface in java.lang.reflect" class="external-link">Method</a> method, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Iterable.html" title="class or interface in java.lang" class="external-link">Iterable</a><<a href="../../linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a>> parameters, |
| <a href="../../linq4j/tree/BlockStatement.html" title="class in org.apache.calcite.linq4j.tree">BlockStatement</a> body)</span></div> |
| <div class="block">Declares a method that overrides another method.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="convert(org.apache.calcite.linq4j.tree.Expression,java.lang.reflect.Type)"> |
| <h3>convert</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type"><a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></span> <span class="element-name">convert</span><wbr><span class="parameters">(<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> operand, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/reflect/Type.html" title="class or interface in java.lang.reflect" class="external-link">Type</a> toType)</span></div> |
| <div class="block">Convert <code>operand</code> to target type <code>toType</code>.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>operand</code> - The expression to convert</dd> |
| <dd><code>toType</code> - Target type</dd> |
| <dt>Returns:</dt> |
| <dd>A new expression with type <code>toType</code> or original if there |
| is no need to convert</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="convert(org.apache.calcite.linq4j.tree.Expression,java.lang.reflect.Type,java.lang.reflect.Type)"> |
| <h3>convert</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type"><a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></span> <span class="element-name">convert</span><wbr><span class="parameters">(<a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> operand, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/reflect/Type.html" title="class or interface in java.lang.reflect" class="external-link">Type</a> fromType, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/reflect/Type.html" title="class or interface in java.lang.reflect" class="external-link">Type</a> toType)</span></div> |
| <div class="block">Convert <code>operand</code> to target type <code>toType</code>.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>operand</code> - The expression to convert</dd> |
| <dd><code>fromType</code> - Field type</dd> |
| <dd><code>toType</code> - Target type</dd> |
| <dt>Returns:</dt> |
| <dd>A new expression with type <code>toType</code> or original if there |
| is no need to convert</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="evaluate(java.lang.Object,java.lang.Class)"> |
| <h3>evaluate</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="type-parameters"><T></span> <span class="return-type">@Nullable T</span> <span class="element-name">evaluate</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a> o, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Class.html" title="class or interface in java.lang" class="external-link">Class</a><T> clazz)</span></div> |
| <div class="block">Converts a value to a given class.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="call(org.apache.calcite.linq4j.tree.Expression,java.lang.Class,java.lang.String,java.util.List)"> |
| <h3>call</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type"><a href="../../linq4j/tree/MethodCallExpression.html" title="class in org.apache.calcite.linq4j.tree">MethodCallExpression</a></span> <span class="element-name">call</span><wbr><span class="parameters">(@Nullable <a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> targetExpression, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Class.html" title="class or interface in java.lang" class="external-link">Class</a> clazz, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a> methodName, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><? extends <a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>> arguments)</span></div> |
| <div class="block">A more powerful version of |
| <a href="../../linq4j/tree/Expressions.html#call(java.lang.reflect.Type,java.lang.String,java.lang.Iterable)"><code>Expressions.call(Type, String, Iterable)</code></a>. |
| Tries best effort to convert the |
| accepted arguments to match parameter type.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>targetExpression</code> - Target expression, or null if method is static</dd> |
| <dd><code>clazz</code> - Class against which method is invoked</dd> |
| <dd><code>methodName</code> - Name of method</dd> |
| <dd><code>arguments</code> - Argument expressions</dd> |
| <dt>Returns:</dt> |
| <dd>MethodCallExpression that call the given name method</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/RuntimeException.html" title="class or interface in java.lang" class="external-link">RuntimeException</a></code> - if no suitable method found</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="sessionize(org.apache.calcite.linq4j.Enumerator,int,int,long)"> |
| <h3>sessionize</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type"><a href="../../linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a><@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>[]></span> <span class="element-name">sessionize</span><wbr><span class="parameters">(<a href="../../linq4j/Enumerator.html" title="interface in org.apache.calcite.linq4j">Enumerator</a><@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>[]> inputEnumerator, |
| int indexOfWatermarkedColumn, |
| int indexOfKeyColumn, |
| long gap)</span></div> |
| <div class="block">Creates enumerable implementation that applies sessionization to elements from the input |
| enumerator based on a specified key. Elements are windowed into sessions separated by |
| periods with no input for at least the duration specified by gap parameter.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="hopping(org.apache.calcite.linq4j.Enumerator,int,long,long,long)"> |
| <h3>hopping</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type"><a href="../../linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a><@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>[]></span> <span class="element-name">hopping</span><wbr><span class="parameters">(<a href="../../linq4j/Enumerator.html" title="interface in org.apache.calcite.linq4j">Enumerator</a><@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>[]> inputEnumerator, |
| int indexOfWatermarkedColumn, |
| long emitFrequency, |
| long windowSize, |
| long offset)</span></div> |
| <div class="block">Create enumerable implementation that applies hopping on each element from the input |
| enumerator and produces at least one element for each input element.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="tumbling(org.apache.calcite.linq4j.Enumerable,org.apache.calcite.linq4j.function.Function1)"> |
| <h3>tumbling</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="type-parameters"><TSource,<wbr> |
| TResult></span> <span class="return-type"><a href="../../linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a><TResult></span> <span class="element-name">tumbling</span><wbr><span class="parameters">(<a href="../../linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a><TSource> inputEnumerable, |
| <a href="../../linq4j/function/Function1.html" title="interface in org.apache.calcite.linq4j.function">Function1</a><TSource,<wbr>TResult> outSelector)</span></div> |
| <div class="block">Apply tumbling per row from the enumerable input.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="generateCollatorExpression(org.apache.calcite.sql.SqlCollation)"> |
| <h3>generateCollatorExpression</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type">@Nullable <a href="../../linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></span> <span class="element-name">generateCollatorExpression</span><wbr><span class="parameters">(@Nullable <a href="../../sql/SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a> collation)</span></div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="toExternal(org.apache.calcite.rel.type.RelDataType,java.util.TimeZone)"> |
| <h3>toExternal</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/function/Function.html" title="class or interface in java.util.function" class="external-link">Function</a><<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>,<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>></span> <span class="element-name">toExternal</span><wbr><span class="parameters">(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a> type, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/TimeZone.html" title="class or interface in java.util" class="external-link">TimeZone</a> timeZone)</span></div> |
| <div class="block">Returns a function that converts an internal value to an external |
| value. |
| |
| <p>Datetime values' internal representations have no time zone, |
| and their external values are moments (relative to UTC epoch), |
| so the <code>timeZone</code> parameter supplies the implicit time zone of |
| the internal representation. If you specify the local time zone of the |
| JVM, then <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.sql/java/sql/Timestamp.html#toString()" title="class or interface in java.sql" class="external-link"><code>Timestamp.toString()</code></a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.sql/java/sql/Date.html#toString()" title="class or interface in java.sql" class="external-link"><code>Date.toString()</code></a>, and |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.sql/java/sql/Time.html#toString()" title="class or interface in java.sql" class="external-link"><code>Time.toString()</code></a> on the external values will give a value |
| consistent with the internal values.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="toExternal(java.util.List,java.util.TimeZone)"> |
| <h3>toExternal</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/function/Function.html" title="class or interface in java.util.function" class="external-link">Function</a><@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>[],<wbr><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>>></span> <span class="element-name">toExternal</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>> types, |
| <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/TimeZone.html" title="class or interface in java.util" class="external-link">TimeZone</a> timeZone)</span></div> |
| <div class="block">Returns a function that converts an array of internal values to |
| a list of external values.</div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </section> |
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