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| <div class="subTitle">org.apache.calcite.linq4j.function</div> |
| <h2 title="类 Functions" class="title">类 Functions</h2> |
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| <ul class="inheritance"> |
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| <li>org.apache.calcite.linq4j.function.Functions</li> |
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| <pre>public abstract class <span class="typeNameLabel">Functions</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></pre> |
| <div class="block">Utilities relating to functions.</div> |
| </li> |
| </ul> |
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| <!-- =========== 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>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="java.util中的类或接口">Map</a><<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><? extends <a href="../../../../../org/apache/calcite/linq4j/function/Function.html" title="org.apache.calcite.linq4j.function中的接口">Function</a>>,<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/linq4j/function/Functions.html#FUNCTION_RESULT_TYPES">FUNCTION_RESULT_TYPES</a></span></code> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.summary"> |
| <!-- --> |
| </a> |
| <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="t4" class="tableTab"><span><a href="javascript:show(8);">具体方法</a></span><span class="tabEnd"> </span></span><span id="t6" class="tableTab"><span><a href="javascript:show(32);">已过时的方法</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 <T1> <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T1,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Double.html?is-external=true" title="java.lang中的类或接口">Double</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#adapt-org.apache.calcite.linq4j.function.DoubleFunction1-">adapt</a></span>(<a href="../../../../../org/apache/calcite/linq4j/function/DoubleFunction1.html" title="org.apache.calcite.linq4j.function中的接口">DoubleFunction1</a><T1> f)</code> |
| <div class="block">Adapts a <a href="../../../../../org/apache/calcite/linq4j/function/DoubleFunction1.html" title="org.apache.calcite.linq4j.function中的接口"><code>DoubleFunction1</code></a> (that returns a <code>double</code>) to |
| an <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口"><code>Function1</code></a> returning a <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Double.html?is-external=true" title="java.lang中的类或接口"><code>Double</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <T1> <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T1,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Float.html?is-external=true" title="java.lang中的类或接口">Float</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#adapt-org.apache.calcite.linq4j.function.FloatFunction1-">adapt</a></span>(<a href="../../../../../org/apache/calcite/linq4j/function/FloatFunction1.html" title="org.apache.calcite.linq4j.function中的接口">FloatFunction1</a><T1> f)</code> |
| <div class="block">Adapts a <a href="../../../../../org/apache/calcite/linq4j/function/FloatFunction1.html" title="org.apache.calcite.linq4j.function中的接口"><code>FloatFunction1</code></a> (that returns a <code>float</code>) to |
| an <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口"><code>Function1</code></a> returning a <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Float.html?is-external=true" title="java.lang中的类或接口"><code>Float</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <T1> <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T1,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#adapt-org.apache.calcite.linq4j.function.IntegerFunction1-">adapt</a></span>(<a href="../../../../../org/apache/calcite/linq4j/function/IntegerFunction1.html" title="org.apache.calcite.linq4j.function中的接口">IntegerFunction1</a><T1> f)</code> |
| <div class="block">Adapts an <a href="../../../../../org/apache/calcite/linq4j/function/IntegerFunction1.html" title="org.apache.calcite.linq4j.function中的接口"><code>IntegerFunction1</code></a> (that returns an <code>int</code>) to |
| an <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口"><code>Function1</code></a> returning an <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口"><code>Integer</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static <T1,R> <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><R></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#adapt-java.util.List-org.apache.calcite.linq4j.function.Function1-">adapt</a></span>(<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><T1> list, |
| <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T1,R> f)</code> |
| <div class="block"><span class="deprecatedLabel">已过时。</span> |
| <div class="block"><span class="deprecationComment">Use <code>Lists.transform(java.util.List<F>, com.google.common.base.Function<? super F, ? extends T>)</code></span></div> |
| </div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>static <T1> <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T1,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="java.lang中的类或接口">Long</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#adapt-org.apache.calcite.linq4j.function.LongFunction1-">adapt</a></span>(<a href="../../../../../org/apache/calcite/linq4j/function/LongFunction1.html" title="org.apache.calcite.linq4j.function中的接口">LongFunction1</a><T1> f)</code> |
| <div class="block">Adapts a <a href="../../../../../org/apache/calcite/linq4j/function/LongFunction1.html" title="org.apache.calcite.linq4j.function中的接口"><code>LongFunction1</code></a> (that returns a <code>long</code>) to |
| an <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口"><code>Function1</code></a> returning a <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="java.lang中的类或接口"><code>Long</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>static <T,R> <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><R></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#adapt-T:A-org.apache.calcite.linq4j.function.Function1-">adapt</a></span>(T[] ts, |
| <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T,R> f)</code> |
| <div class="block"><span class="deprecatedLabel">已过时。</span> |
| <div class="block"><span class="deprecationComment">Use <code>Lists.transform(java.util.List<F>, com.google.common.base.Function<? super F, ? extends T>)</code> |
| and <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Arrays.html?is-external=true#asList-T...-" title="java.util中的类或接口"><code>Arrays.asList(Object[])</code></a></span></div> |
| </div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static <E> boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#all-java.util.List-org.apache.calcite.linq4j.function.Predicate1-">all</a></span>(<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><? extends E> list, |
| <a href="../../../../../org/apache/calcite/linq4j/function/Predicate1.html" title="org.apache.calcite.linq4j.function中的接口">Predicate1</a><E> predicate)</code> |
| <div class="block">Returns whether <code>predicate</code> is true for all elements of |
| <code>list</code>.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>static <T1,R> <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><R></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#apply-java.util.List-org.apache.calcite.linq4j.function.Function1-">apply</a></span>(<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><T1> list, |
| <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T1,R> f)</code> |
| <div class="block">Creates a copy of a list, applying a function to each element.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>static <T> <a href="../../../../../org/apache/calcite/linq4j/function/EqualityComparer.html" title="org.apache.calcite.linq4j.function中的接口">EqualityComparer</a><T[]></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#arrayComparer--">arrayComparer</a></span>()</code> |
| <div class="block">Returns an <a href="../../../../../org/apache/calcite/linq4j/function/EqualityComparer.html" title="org.apache.calcite.linq4j.function中的接口"><code>EqualityComparer</code></a> that works on arrays of objects.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>static <T,R> <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T,R></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#constant-R-">constant</a></span>(R r)</code> |
| <div class="block">Returns a 1-parameter function that always returns the same value.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>static <T,R> <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T,R></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#constantNull--">constantNull</a></span>()</code> |
| <div class="block">Returns a 1-parameter function that always returns null.</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>static <E> boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#exists-java.util.List-org.apache.calcite.linq4j.function.Predicate1-">exists</a></span>(<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><? extends E> list, |
| <a href="../../../../../org/apache/calcite/linq4j/function/Predicate1.html" title="org.apache.calcite.linq4j.function中的接口">Predicate1</a><E> predicate)</code> |
| <div class="block">Returns whether there is an element in <code>list</code> for which |
| <code>predicate</code> is true.</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>static <T> <a href="../../../../../org/apache/calcite/linq4j/function/Predicate1.html" title="org.apache.calcite.linq4j.function中的接口">Predicate1</a><T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#falsePredicate1--">falsePredicate1</a></span>()</code> |
| <div class="block">A predicate with one parameter that always returns <code>true</code>.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>static <T1,T2> <a href="../../../../../org/apache/calcite/linq4j/function/Predicate2.html" title="org.apache.calcite.linq4j.function中的接口">Predicate2</a><T1,T2></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#falsePredicate2--">falsePredicate2</a></span>()</code> |
| <div class="block">A predicate with two parameters that always returns <code>false</code>.</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>static <E> <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><E></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#filter-java.util.List-org.apache.calcite.linq4j.function.Predicate1-">filter</a></span>(<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><E> list, |
| <a href="../../../../../org/apache/calcite/linq4j/function/Predicate1.html" title="org.apache.calcite.linq4j.function中的接口">Predicate1</a><E> predicate)</code> |
| <div class="block">Returns a list that contains only elements of <code>list</code> that match |
| <code>predicate</code>.</div> |
| </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>static <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><? extends <a href="../../../../../org/apache/calcite/linq4j/function/Function.html" title="org.apache.calcite.linq4j.function中的接口">Function</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#functionClass-java.lang.reflect.Type-">functionClass</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="java.lang.reflect中的类或接口">Type</a> aClass)</code> |
| <div class="block">Returns the appropriate interface for a lambda function with |
| 1 argument and the given return type.</div> |
| </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code>static <E> <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><E></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#generate-int-org.apache.calcite.linq4j.function.Function1-">generate</a></span>(int size, |
| <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>,E> fn)</code> |
| <div class="block">Returns a list generated by applying a function to each index between |
| 0 and <code>size</code> - 1.</div> |
| </td> |
| </tr> |
| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code>static <T> <a href="../../../../../org/apache/calcite/linq4j/function/EqualityComparer.html" title="org.apache.calcite.linq4j.function中的接口">EqualityComparer</a><T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#identityComparer--">identityComparer</a></span>()</code> |
| <div class="block">Returns an <a href="../../../../../org/apache/calcite/linq4j/function/EqualityComparer.html" title="org.apache.calcite.linq4j.function中的接口"><code>EqualityComparer</code></a> that uses object identity and hash |
| code.</div> |
| </td> |
| </tr> |
| <tr id="i18" class="altColor"> |
| <td class="colFirst"><code>static <TSource> <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><TSource,TSource></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#identitySelector--">identitySelector</a></span>()</code> </td> |
| </tr> |
| <tr id="i19" class="rowColor"> |
| <td class="colFirst"><code>static <R> <a href="../../../../../org/apache/calcite/linq4j/function/Function0.html" title="org.apache.calcite.linq4j.function中的接口">Function0</a><R></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#ignore0--">ignore0</a></span>()</code> |
| <div class="block">Returns a function of arity 0 that does nothing.</div> |
| </td> |
| </tr> |
| <tr id="i20" class="altColor"> |
| <td class="colFirst"><code>static <R,T0> <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><R,T0></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#ignore1--">ignore1</a></span>()</code> |
| <div class="block">Returns a function of arity 1 that does nothing.</div> |
| </td> |
| </tr> |
| <tr id="i21" class="rowColor"> |
| <td class="colFirst"><code>static <R,T0,T1> <a href="../../../../../org/apache/calcite/linq4j/function/Function2.html" title="org.apache.calcite.linq4j.function中的接口">Function2</a><R,T0,T1></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#ignore2--">ignore2</a></span>()</code> |
| <div class="block">Returns a function of arity 2 that does nothing.</div> |
| </td> |
| </tr> |
| <tr id="i22" class="altColor"> |
| <td class="colFirst"><code>static <T extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true" title="java.lang中的类或接口">Comparable</a><T>><br><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true" title="java.util中的类或接口">Comparator</a><T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#nullsComparator-boolean-boolean-">nullsComparator</a></span>(boolean nullsFirst, |
| boolean reverse)</code> |
| <div class="block">Returns a <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true" title="java.util中的类或接口"><code>Comparator</code></a> that handles null values.</div> |
| </td> |
| </tr> |
| <tr id="i23" class="rowColor"> |
| <td class="colFirst"><code>static <T,T2> <a href="../../../../../org/apache/calcite/linq4j/function/Predicate1.html" title="org.apache.calcite.linq4j.function中的接口">Predicate1</a><T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#ofTypePredicate-java.lang.Class-">ofTypePredicate</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><T2> clazz)</code> |
| <div class="block">Creates a predicate that returns whether an object is an instance of a |
| particular type or is null.</div> |
| </td> |
| </tr> |
| <tr id="i24" class="altColor"> |
| <td class="colFirst"><code>static <T,T2> <a href="../../../../../org/apache/calcite/linq4j/function/EqualityComparer.html" title="org.apache.calcite.linq4j.function中的接口">EqualityComparer</a><T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#selectorComparer-org.apache.calcite.linq4j.function.Function1-">selectorComparer</a></span>(<a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T,T2> selector)</code> |
| <div class="block">Returns an <a href="../../../../../org/apache/calcite/linq4j/function/EqualityComparer.html" title="org.apache.calcite.linq4j.function中的接口"><code>EqualityComparer</code></a> that uses a selector function.</div> |
| </td> |
| </tr> |
| <tr id="i25" class="rowColor"> |
| <td class="colFirst"><code>static <T1,T2> <a href="../../../../../org/apache/calcite/linq4j/function/Predicate2.html" title="org.apache.calcite.linq4j.function中的接口">Predicate2</a><T1,T2></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#toPredicate-org.apache.calcite.linq4j.function.Function2-">toPredicate</a></span>(<a href="../../../../../org/apache/calcite/linq4j/function/Function2.html" title="org.apache.calcite.linq4j.function中的接口">Function2</a><T1,T2,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="java.lang中的类或接口">Boolean</a>> function)</code> |
| <div class="block">Converts a 2-parameter function to a predicate.</div> |
| </td> |
| </tr> |
| <tr id="i26" class="altColor"> |
| <td class="colFirst"><code>static <T1,T2> <a href="../../../../../org/apache/calcite/linq4j/function/Predicate2.html" title="org.apache.calcite.linq4j.function中的接口">Predicate2</a><T1,T2></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#toPredicate2-org.apache.calcite.linq4j.function.Predicate1-">toPredicate2</a></span>(<a href="../../../../../org/apache/calcite/linq4j/function/Predicate1.html" title="org.apache.calcite.linq4j.function中的接口">Predicate1</a><T1> p1)</code> </td> |
| </tr> |
| <tr id="i27" class="rowColor"> |
| <td class="colFirst"><code>static <TSource> <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><TSource,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#toStringSelector--">toStringSelector</a></span>()</code> |
| <div class="block">Returns a selector that calls the <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"><code>Object.toString()</code></a> method on |
| each element.</div> |
| </td> |
| </tr> |
| <tr id="i28" class="altColor"> |
| <td class="colFirst"><code>static <T> <a href="../../../../../org/apache/calcite/linq4j/function/Predicate1.html" title="org.apache.calcite.linq4j.function中的接口">Predicate1</a><T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#truePredicate1--">truePredicate1</a></span>()</code> |
| <div class="block">A predicate with one parameter that always returns <code>true</code>.</div> |
| </td> |
| </tr> |
| <tr id="i29" class="rowColor"> |
| <td class="colFirst"><code>static <T1,T2> <a href="../../../../../org/apache/calcite/linq4j/function/Predicate2.html" title="org.apache.calcite.linq4j.function中的接口">Predicate2</a><T1,T2></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/function/Functions.html#truePredicate2--">truePredicate2</a></span>()</code> |
| <div class="block">A predicate with two parameters that always returns <code>true</code>.</div> |
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| <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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| <h3>字段详细资料</h3> |
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| <pre>public static final <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="java.util中的类或接口">Map</a><<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><? extends <a href="../../../../../org/apache/calcite/linq4j/function/Function.html" title="org.apache.calcite.linq4j.function中的接口">Function</a>>,<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>> FUNCTION_RESULT_TYPES</pre> |
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| <h4>constant</h4> |
| <pre>public static <T,R> <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T,R> constant(R r)</pre> |
| <div class="block">Returns a 1-parameter function that always returns the same value.</div> |
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| <pre>public static <T,R> <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T,R> constantNull()</pre> |
| <div class="block">Returns a 1-parameter function that always returns null.</div> |
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| <div class="block">A predicate with one parameter that always returns <code>true</code>.</div> |
| <dl> |
| <dt><span class="paramLabel">类型参数:</span></dt> |
| <dd><code>T</code> - First parameter type</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>Predicate that always returns true</dd> |
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| <pre>public static <T> <a href="../../../../../org/apache/calcite/linq4j/function/Predicate1.html" title="org.apache.calcite.linq4j.function中的接口">Predicate1</a><T> falsePredicate1()</pre> |
| <div class="block">A predicate with one parameter that always returns <code>true</code>.</div> |
| <dl> |
| <dt><span class="paramLabel">类型参数:</span></dt> |
| <dd><code>T</code> - First parameter type</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>Predicate that always returns true</dd> |
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| <pre>public static <T1,T2> <a href="../../../../../org/apache/calcite/linq4j/function/Predicate2.html" title="org.apache.calcite.linq4j.function中的接口">Predicate2</a><T1,T2> truePredicate2()</pre> |
| <div class="block">A predicate with two parameters that always returns <code>true</code>.</div> |
| <dl> |
| <dt><span class="paramLabel">类型参数:</span></dt> |
| <dd><code>T1</code> - First parameter type</dd> |
| <dd><code>T2</code> - Second parameter type</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>Predicate that always returns true</dd> |
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| <pre>public static <T1,T2> <a href="../../../../../org/apache/calcite/linq4j/function/Predicate2.html" title="org.apache.calcite.linq4j.function中的接口">Predicate2</a><T1,T2> falsePredicate2()</pre> |
| <div class="block">A predicate with two parameters that always returns <code>false</code>.</div> |
| <dl> |
| <dt><span class="paramLabel">类型参数:</span></dt> |
| <dd><code>T1</code> - First parameter type</dd> |
| <dd><code>T2</code> - Second parameter type</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>Predicate that always returns false</dd> |
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| <pre>public static <TSource> <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><TSource,TSource> identitySelector()</pre> |
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| <pre>public static <TSource> <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><TSource,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>> toStringSelector()</pre> |
| <div class="block">Returns a selector that calls the <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"><code>Object.toString()</code></a> method on |
| each element.</div> |
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| <h4>ofTypePredicate</h4> |
| <pre>public static <T,T2> <a href="../../../../../org/apache/calcite/linq4j/function/Predicate1.html" title="org.apache.calcite.linq4j.function中的接口">Predicate1</a><T> ofTypePredicate(<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><T2> clazz)</pre> |
| <div class="block">Creates a predicate that returns whether an object is an instance of a |
| particular type or is null.</div> |
| <dl> |
| <dt><span class="paramLabel">类型参数:</span></dt> |
| <dd><code>T</code> - Type of objects to test</dd> |
| <dd><code>T2</code> - Desired type</dd> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>clazz</code> - Desired type</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>Predicate that tests for desired type</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="toPredicate2-org.apache.calcite.linq4j.function.Predicate1-"> |
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| <h4>toPredicate2</h4> |
| <pre>public static <T1,T2> <a href="../../../../../org/apache/calcite/linq4j/function/Predicate2.html" title="org.apache.calcite.linq4j.function中的接口">Predicate2</a><T1,T2> toPredicate2(<a href="../../../../../org/apache/calcite/linq4j/function/Predicate1.html" title="org.apache.calcite.linq4j.function中的接口">Predicate1</a><T1> p1)</pre> |
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| <pre>public static <T1,T2> <a href="../../../../../org/apache/calcite/linq4j/function/Predicate2.html" title="org.apache.calcite.linq4j.function中的接口">Predicate2</a><T1,T2> toPredicate(<a href="../../../../../org/apache/calcite/linq4j/function/Function2.html" title="org.apache.calcite.linq4j.function中的接口">Function2</a><T1,T2,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="java.lang中的类或接口">Boolean</a>> function)</pre> |
| <div class="block">Converts a 2-parameter function to a predicate.</div> |
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| <pre>public static <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><? extends <a href="../../../../../org/apache/calcite/linq4j/function/Function.html" title="org.apache.calcite.linq4j.function中的接口">Function</a>> functionClass(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="java.lang.reflect中的类或接口">Type</a> aClass)</pre> |
| <div class="block">Returns the appropriate interface for a lambda function with |
| 1 argument and the given return type. |
| |
| <p>For example:</p> |
| functionClass(Integer.TYPE) returns IntegerFunction1.class |
| functionClass(String.class) returns Function1.class</div> |
| <dl> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>aClass</code> - Return type</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>Function class</dd> |
| </dl> |
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| <pre>public static <T1> <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T1,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>> adapt(<a href="../../../../../org/apache/calcite/linq4j/function/IntegerFunction1.html" title="org.apache.calcite.linq4j.function中的接口">IntegerFunction1</a><T1> f)</pre> |
| <div class="block">Adapts an <a href="../../../../../org/apache/calcite/linq4j/function/IntegerFunction1.html" title="org.apache.calcite.linq4j.function中的接口"><code>IntegerFunction1</code></a> (that returns an <code>int</code>) to |
| an <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口"><code>Function1</code></a> returning an <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口"><code>Integer</code></a>.</div> |
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| <pre>public static <T1> <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T1,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Double.html?is-external=true" title="java.lang中的类或接口">Double</a>> adapt(<a href="../../../../../org/apache/calcite/linq4j/function/DoubleFunction1.html" title="org.apache.calcite.linq4j.function中的接口">DoubleFunction1</a><T1> f)</pre> |
| <div class="block">Adapts a <a href="../../../../../org/apache/calcite/linq4j/function/DoubleFunction1.html" title="org.apache.calcite.linq4j.function中的接口"><code>DoubleFunction1</code></a> (that returns a <code>double</code>) to |
| an <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口"><code>Function1</code></a> returning a <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Double.html?is-external=true" title="java.lang中的类或接口"><code>Double</code></a>.</div> |
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| <pre>public static <T1> <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T1,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="java.lang中的类或接口">Long</a>> adapt(<a href="../../../../../org/apache/calcite/linq4j/function/LongFunction1.html" title="org.apache.calcite.linq4j.function中的接口">LongFunction1</a><T1> f)</pre> |
| <div class="block">Adapts a <a href="../../../../../org/apache/calcite/linq4j/function/LongFunction1.html" title="org.apache.calcite.linq4j.function中的接口"><code>LongFunction1</code></a> (that returns a <code>long</code>) to |
| an <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口"><code>Function1</code></a> returning a <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="java.lang中的类或接口"><code>Long</code></a>.</div> |
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| <pre>public static <T1> <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T1,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Float.html?is-external=true" title="java.lang中的类或接口">Float</a>> adapt(<a href="../../../../../org/apache/calcite/linq4j/function/FloatFunction1.html" title="org.apache.calcite.linq4j.function中的接口">FloatFunction1</a><T1> f)</pre> |
| <div class="block">Adapts a <a href="../../../../../org/apache/calcite/linq4j/function/FloatFunction1.html" title="org.apache.calcite.linq4j.function中的接口"><code>FloatFunction1</code></a> (that returns a <code>float</code>) to |
| an <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口"><code>Function1</code></a> returning a <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Float.html?is-external=true" title="java.lang中的类或接口"><code>Float</code></a>.</div> |
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| public static <T1,R> <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><R> adapt(<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><T1> list, |
| <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T1,R> f)</pre> |
| <div class="block"><span class="deprecatedLabel">已过时。</span> <span class="deprecationComment">Use <code>Lists.transform(java.util.List<F>, com.google.common.base.Function<? super F, ? extends T>)</code></span></div> |
| <div class="block">Creates a view of a list that applies a function to each element.</div> |
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| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="java.lang中的类或接口">@Deprecated</a> |
| public static <T,R> <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><R> adapt(T[] ts, |
| <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T,R> f)</pre> |
| <div class="block"><span class="deprecatedLabel">已过时。</span> <span class="deprecationComment">Use <code>Lists.transform(java.util.List<F>, com.google.common.base.Function<? super F, ? extends T>)</code> |
| and <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Arrays.html?is-external=true#asList-T...-" title="java.util中的类或接口"><code>Arrays.asList(Object[])</code></a></span></div> |
| <div class="block">Creates a view of an array that applies a function to each element.</div> |
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| <a name="apply-java.util.List-org.apache.calcite.linq4j.function.Function1-"> |
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| <pre>public static <T1,R> <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><R> apply(<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><T1> list, |
| <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T1,R> f)</pre> |
| <div class="block">Creates a copy of a list, applying a function to each element.</div> |
| </li> |
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| <a name="filter-java.util.List-org.apache.calcite.linq4j.function.Predicate1-"> |
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| <pre>public static <E> <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><E> filter(<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><E> list, |
| <a href="../../../../../org/apache/calcite/linq4j/function/Predicate1.html" title="org.apache.calcite.linq4j.function中的接口">Predicate1</a><E> predicate)</pre> |
| <div class="block">Returns a list that contains only elements of <code>list</code> that match |
| <code>predicate</code>. Avoids allocating a list if all elements match or no |
| elements match.</div> |
| </li> |
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| <pre>public static <E> boolean exists(<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><? extends E> list, |
| <a href="../../../../../org/apache/calcite/linq4j/function/Predicate1.html" title="org.apache.calcite.linq4j.function中的接口">Predicate1</a><E> predicate)</pre> |
| <div class="block">Returns whether there is an element in <code>list</code> for which |
| <code>predicate</code> is true.</div> |
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| <pre>public static <E> boolean all(<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><? extends E> list, |
| <a href="../../../../../org/apache/calcite/linq4j/function/Predicate1.html" title="org.apache.calcite.linq4j.function中的接口">Predicate1</a><E> predicate)</pre> |
| <div class="block">Returns whether <code>predicate</code> is true for all elements of |
| <code>list</code>.</div> |
| </li> |
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| <a name="generate-int-org.apache.calcite.linq4j.function.Function1-"> |
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| <pre>public static <E> <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><E> generate(int size, |
| <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="java.lang中的类或接口">Integer</a>,E> fn)</pre> |
| <div class="block">Returns a list generated by applying a function to each index between |
| 0 and <code>size</code> - 1.</div> |
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| <pre>public static <R> <a href="../../../../../org/apache/calcite/linq4j/function/Function0.html" title="org.apache.calcite.linq4j.function中的接口">Function0</a><R> ignore0()</pre> |
| <div class="block">Returns a function of arity 0 that does nothing.</div> |
| <dl> |
| <dt><span class="paramLabel">类型参数:</span></dt> |
| <dd><code>R</code> - Return type</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>Function that does nothing.</dd> |
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| <pre>public static <R,T0> <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><R,T0> ignore1()</pre> |
| <div class="block">Returns a function of arity 1 that does nothing.</div> |
| <dl> |
| <dt><span class="paramLabel">类型参数:</span></dt> |
| <dd><code>R</code> - Return type</dd> |
| <dd><code>T0</code> - Type of parameter 0</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>Function that does nothing.</dd> |
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| <pre>public static <R,T0,T1> <a href="../../../../../org/apache/calcite/linq4j/function/Function2.html" title="org.apache.calcite.linq4j.function中的接口">Function2</a><R,T0,T1> ignore2()</pre> |
| <div class="block">Returns a function of arity 2 that does nothing.</div> |
| <dl> |
| <dt><span class="paramLabel">类型参数:</span></dt> |
| <dd><code>R</code> - Return type</dd> |
| <dd><code>T0</code> - Type of parameter 0</dd> |
| <dd><code>T1</code> - Type of parameter 1</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>Function that does nothing.</dd> |
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| <pre>public static <T extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true" title="java.lang中的类或接口">Comparable</a><T>> <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true" title="java.util中的类或接口">Comparator</a><T> nullsComparator(boolean nullsFirst, |
| boolean reverse)</pre> |
| <div class="block">Returns a <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Comparator.html?is-external=true" title="java.util中的类或接口"><code>Comparator</code></a> that handles null values.</div> |
| <dl> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>nullsFirst</code> - Whether nulls come before all other values</dd> |
| <dd><code>reverse</code> - Whether to reverse the usual order of <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true" title="java.lang中的类或接口"><code>Comparable</code></a>s</dd> |
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| <pre>public static <T> <a href="../../../../../org/apache/calcite/linq4j/function/EqualityComparer.html" title="org.apache.calcite.linq4j.function中的接口">EqualityComparer</a><T> identityComparer()</pre> |
| <div class="block">Returns an <a href="../../../../../org/apache/calcite/linq4j/function/EqualityComparer.html" title="org.apache.calcite.linq4j.function中的接口"><code>EqualityComparer</code></a> that uses object identity and hash |
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| <pre>public static <T> <a href="../../../../../org/apache/calcite/linq4j/function/EqualityComparer.html" title="org.apache.calcite.linq4j.function中的接口">EqualityComparer</a><T[]> arrayComparer()</pre> |
| <div class="block">Returns an <a href="../../../../../org/apache/calcite/linq4j/function/EqualityComparer.html" title="org.apache.calcite.linq4j.function中的接口"><code>EqualityComparer</code></a> that works on arrays of objects.</div> |
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| <pre>public static <T,T2> <a href="../../../../../org/apache/calcite/linq4j/function/EqualityComparer.html" title="org.apache.calcite.linq4j.function中的接口">EqualityComparer</a><T> selectorComparer(<a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="org.apache.calcite.linq4j.function中的接口">Function1</a><T,T2> selector)</pre> |
| <div class="block">Returns an <a href="../../../../../org/apache/calcite/linq4j/function/EqualityComparer.html" title="org.apache.calcite.linq4j.function中的接口"><code>EqualityComparer</code></a> that uses a selector function.</div> |
| </li> |
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| </li> |
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