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| <li>概要: </li> |
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| <h2 title="类 RexLiteral" class="title">类 RexLiteral</h2> |
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| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">java.lang.Object</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">org.apache.calcite.rex.RexNode</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.calcite.rex.RexLiteral</li> |
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| <pre>public class <span class="typeNameLabel">RexLiteral</span> |
| extends <a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></pre> |
| <div class="block">Constant value in a row-expression. |
| |
| <p>There are several methods for creating literals in <a href="../../../../org/apache/calcite/rex/RexBuilder.html" title="org.apache.calcite.rex中的类"><code>RexBuilder</code></a>: |
| <a href="../../../../org/apache/calcite/rex/RexBuilder.html#makeLiteral-boolean-"><code>RexBuilder.makeLiteral(boolean)</code></a> and so forth.</p> |
| |
| <p>How is the value stored? In that respect, the class is somewhat of a black |
| box. There is a <a href="../../../../org/apache/calcite/rex/RexLiteral.html#getValue--"><code>getValue()</code></a> method which returns the value as an |
| object, but the type of that value is implementation detail, and it is best |
| that your code does not depend upon that knowledge. It is better to use |
| task-oriented methods such as <a href="../../../../org/apache/calcite/rex/RexLiteral.html#getValue2--"><code>getValue2()</code></a> and |
| <a href="../../../../org/apache/calcite/rex/RexLiteral.html#toJavaString-java.lang.Comparable-org.apache.calcite.sql.type.SqlTypeName-org.apache.calcite.rel.type.RelDataType-org.apache.calcite.rex.RexDigestIncludeType-"><code>toJavaString(java.lang.Comparable, org.apache.calcite.sql.type.SqlTypeName, org.apache.calcite.rel.type.RelDataType, org.apache.calcite.rex.RexDigestIncludeType)</code></a>.</p> |
| |
| <p>The allowable types and combinations are:</p> |
| |
| <table> |
| <caption>Allowable types for RexLiteral instances</caption> |
| <tr> |
| <th>TypeName</th> |
| <th>Meaning</th> |
| <th>Value type</th> |
| </tr> |
| <tr> |
| <td><a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#NULL"><code>SqlTypeName.NULL</code></a></td> |
| <td>The null value. It has its own special type.</td> |
| <td>null</td> |
| </tr> |
| <tr> |
| <td><a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#BOOLEAN"><code>SqlTypeName.BOOLEAN</code></a></td> |
| <td>Boolean, namely <code>TRUE</code>, <code>FALSE</code> or <code> |
| UNKNOWN</code>.</td> |
| <td><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"><code>Boolean</code></a>, or null represents the UNKNOWN value</td> |
| </tr> |
| <tr> |
| <td><a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#DECIMAL"><code>SqlTypeName.DECIMAL</code></a></td> |
| <td>Exact number, for example <code>0</code>, <code>-.5</code>, <code> |
| 12345</code>.</td> |
| <td><a href="https://docs.oracle.com/javase/8/docs/api/java/math/BigDecimal.html?is-external=true" title="java.math中的类或接口"><code>BigDecimal</code></a></td> |
| </tr> |
| <tr> |
| <td><a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#DOUBLE"><code>SqlTypeName.DOUBLE</code></a></td> |
| <td>Approximate number, for example <code>6.023E-23</code>.</td> |
| <td><a href="https://docs.oracle.com/javase/8/docs/api/java/math/BigDecimal.html?is-external=true" title="java.math中的类或接口"><code>BigDecimal</code></a></td> |
| </tr> |
| <tr> |
| <td><a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#DATE"><code>SqlTypeName.DATE</code></a></td> |
| <td>Date, for example <code>DATE '1969-04'29'</code></td> |
| <td><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Calendar.html?is-external=true" title="java.util中的类或接口"><code>Calendar</code></a>; |
| also <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Calendar.html?is-external=true" title="java.util中的类或接口"><code>Calendar</code></a> (UTC time zone) |
| and <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> (days since POSIX epoch)</td> |
| </tr> |
| <tr> |
| <td><a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#TIME"><code>SqlTypeName.TIME</code></a></td> |
| <td>Time, for example <code>TIME '18:37:42.567'</code></td> |
| <td><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Calendar.html?is-external=true" title="java.util中的类或接口"><code>Calendar</code></a>; |
| also <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Calendar.html?is-external=true" title="java.util中的类或接口"><code>Calendar</code></a> (UTC time zone) |
| and <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> (milliseconds since midnight)</td> |
| </tr> |
| <tr> |
| <td><a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#TIMESTAMP"><code>SqlTypeName.TIMESTAMP</code></a></td> |
| <td>Timestamp, for example <code>TIMESTAMP '1969-04-29 |
| 18:37:42.567'</code></td> |
| <td><a href="../../../../org/apache/calcite/util/TimestampString.html" title="org.apache.calcite.util中的类"><code>TimestampString</code></a>; |
| also <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Calendar.html?is-external=true" title="java.util中的类或接口"><code>Calendar</code></a> (UTC time zone) |
| and <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> (milliseconds since POSIX epoch)</td> |
| </tr> |
| <tr> |
| <td><a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#INTERVAL_DAY"><code>SqlTypeName.INTERVAL_DAY</code></a>, |
| <a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#INTERVAL_DAY_HOUR"><code>SqlTypeName.INTERVAL_DAY_HOUR</code></a>, |
| <a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#INTERVAL_DAY_MINUTE"><code>SqlTypeName.INTERVAL_DAY_MINUTE</code></a>, |
| <a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#INTERVAL_DAY_SECOND"><code>SqlTypeName.INTERVAL_DAY_SECOND</code></a>, |
| <a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#INTERVAL_HOUR"><code>SqlTypeName.INTERVAL_HOUR</code></a>, |
| <a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#INTERVAL_HOUR_MINUTE"><code>SqlTypeName.INTERVAL_HOUR_MINUTE</code></a>, |
| <a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#INTERVAL_HOUR_SECOND"><code>SqlTypeName.INTERVAL_HOUR_SECOND</code></a>, |
| <a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#INTERVAL_MINUTE"><code>SqlTypeName.INTERVAL_MINUTE</code></a>, |
| <a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#INTERVAL_MINUTE_SECOND"><code>SqlTypeName.INTERVAL_MINUTE_SECOND</code></a>, |
| <a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#INTERVAL_SECOND"><code>SqlTypeName.INTERVAL_SECOND</code></a></td> |
| <td>Interval, for example <code>INTERVAL '4:3:2' HOUR TO SECOND</code></td> |
| <td><a href="https://docs.oracle.com/javase/8/docs/api/java/math/BigDecimal.html?is-external=true" title="java.math中的类或接口"><code>BigDecimal</code></a>; |
| also <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> (milliseconds)</td> |
| </tr> |
| <tr> |
| <td><a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#INTERVAL_YEAR"><code>SqlTypeName.INTERVAL_YEAR</code></a>, |
| <a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#INTERVAL_YEAR_MONTH"><code>SqlTypeName.INTERVAL_YEAR_MONTH</code></a>, |
| <a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#INTERVAL_MONTH"><code>SqlTypeName.INTERVAL_MONTH</code></a></td> |
| <td>Interval, for example <code>INTERVAL '2-3' YEAR TO MONTH</code></td> |
| <td><a href="https://docs.oracle.com/javase/8/docs/api/java/math/BigDecimal.html?is-external=true" title="java.math中的类或接口"><code>BigDecimal</code></a>; |
| also <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> (months)</td> |
| </tr> |
| <tr> |
| <td><a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#CHAR"><code>SqlTypeName.CHAR</code></a></td> |
| <td>Character constant, for example <code>'Hello, world!'</code>, <code> |
| ''</code>, <code>_N'Bonjour'</code>, <code>_ISO-8859-1'It''s superman!' |
| COLLATE SHIFT_JIS$ja_JP$2</code>. These are always CHAR, never VARCHAR.</td> |
| <td><a href="../../../../org/apache/calcite/util/NlsString.html" title="org.apache.calcite.util中的类"><code>NlsString</code></a>; |
| also <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"><code>String</code></a></td> |
| </tr> |
| <tr> |
| <td><a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#BINARY"><code>SqlTypeName.BINARY</code></a></td> |
| <td>Binary constant, for example <code>X'7F34'</code>. (The number of hexits |
| must be even; see above.) These constants are always BINARY, never |
| VARBINARY.</td> |
| <td><a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="java.nio中的类或接口"><code>ByteBuffer</code></a>; |
| also <code>byte[]</code></td> |
| </tr> |
| <tr> |
| <td><a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html#SYMBOL"><code>SqlTypeName.SYMBOL</code></a></td> |
| <td>A symbol is a special type used to make parsing easier; it is not part of |
| the SQL standard, and is not exposed to end-users. It is used to hold a flag, |
| such as the LEADING flag in a call to the function <code> |
| TRIM([LEADING|TRAILING|BOTH] chars FROM string)</code>.</td> |
| <td>An enum class</td> |
| </tr> |
| </table></div> |
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| <h3>嵌套类概要</h3> |
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| <h3>从类继承的嵌套类/接口 org.apache.calcite.rex.<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></h3> |
| <code><a href="../../../../org/apache/calcite/rex/RexNode.Closeable.html" title="org.apache.calcite.rex中的接口">RexNode.Closeable</a></code></li> |
| </ul> |
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| <h3>字段概要</h3> |
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| <h3>从类继承的字段 org.apache.calcite.rex.<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></h3> |
| <code><a href="../../../../org/apache/calcite/rex/RexNode.html#digest">digest</a></code></li> |
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| <h3>方法概要</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="方法概要表, 列表方法和解释"> |
| <caption><span id="t0" class="activeTableTab"><span>所有方法</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">静态方法</a></span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">实例方法</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">具体方法</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">限定符和类型</th> |
| <th class="colLast" scope="col">方法和说明</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><R,P> R</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#accept-org.apache.calcite.rex.RexBiVisitor-P-">accept</a></span>(<a href="../../../../org/apache/calcite/rex/RexBiVisitor.html" title="org.apache.calcite.rex中的接口">RexBiVisitor</a><R,P> visitor, |
| P arg)</code> |
| <div class="block">Accepts a visitor with a payload, dispatching to the right overloaded |
| <a href="../../../../org/apache/calcite/rex/RexBiVisitor.html#visitInputRef-org.apache.calcite.rex.RexInputRef-P-"><code>RexBiVisitor.visitInputRef(RexInputRef, Object)</code></a> visitXxx} method.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><R> R</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#accept-org.apache.calcite.rex.RexVisitor-">accept</a></span>(<a href="../../../../org/apache/calcite/rex/RexVisitor.html" title="org.apache.calcite.rex中的接口">RexVisitor</a><R> visitor)</code> |
| <div class="block">Accepts a visitor, dispatching to the right overloaded |
| <a href="../../../../org/apache/calcite/rex/RexVisitor.html#visitInputRef-org.apache.calcite.rex.RexInputRef-"><code>visitXxx</code></a> method.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#booleanValue-org.apache.calcite.rex.RexNode-">booleanValue</a></span>(<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a> node)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><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/rex/RexLiteral.html#computeDigest-org.apache.calcite.rex.RexDigestIncludeType-">computeDigest</a></span>(<a href="../../../../org/apache/calcite/rex/RexDigestIncludeType.html" title="org.apache.calcite.rex中的枚举">RexDigestIncludeType</a> includeType)</code> |
| <div class="block">Returns a string which concisely describes the definition of this |
| rex literal.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#equals-java.lang.Object-">equals</a></span>(<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> obj)</code> |
| <div class="block"> |
| |
| Every node must implement <a href="../../../../org/apache/calcite/rex/RexNode.html#equals-java.lang.Object-"><code>RexNode.equals(java.lang.Object)</code></a> based on its content</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../org/apache/calcite/rex/RexLiteral.html" title="org.apache.calcite.rex中的类">RexLiteral</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#fromJdbcString-org.apache.calcite.rel.type.RelDataType-org.apache.calcite.sql.type.SqlTypeName-java.lang.String-">fromJdbcString</a></span>(<a href="../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a> type, |
| <a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html" title="org.apache.calcite.sql.type中的枚举">SqlTypeName</a> typeName, |
| <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> literal)</code> |
| <div class="block">Converts a Jdbc string into a RexLiteral.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/calcite/sql/SqlKind.html" title="org.apache.calcite.sql中的枚举">SqlKind</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#getKind--">getKind</a></span>()</code> |
| <div class="block">Returns the kind of node this is.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#getType--">getType</a></span>()</code> </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html" title="org.apache.calcite.sql.type中的枚举">SqlTypeName</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#getTypeName--">getTypeName</a></span>()</code> </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code><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></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#getValue--">getValue</a></span>()</code> |
| <div class="block">Returns the value of this literal.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code><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></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#getValue2--">getValue2</a></span>()</code> |
| <div class="block">Returns the value of this literal, in the form that the calculator |
| program builder wants it.</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code><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></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#getValue3--">getValue3</a></span>()</code> |
| <div class="block">Returns the value of this literal, in the form that the rex-to-lix |
| translator wants it.</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code><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></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#getValue4--">getValue4</a></span>()</code> |
| <div class="block">Returns the value of this literal, in the form that <a href="../../../../org/apache/calcite/rex/RexInterpreter.html" title="org.apache.calcite.rex中的类"><code>RexInterpreter</code></a> |
| wants it.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code><T> T</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#getValueAs-java.lang.Class-">getValueAs</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><T> clazz)</code> |
| <div class="block">Returns the value of this literal as an instance of the specified class.</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#hashCode--">hashCode</a></span>()</code> |
| <div class="block"> |
| |
| Every node must implement <a href="../../../../org/apache/calcite/rex/RexNode.html#hashCode--"><code>RexNode.hashCode()</code></a> consistent with |
| <a href="../../../../org/apache/calcite/rex/RexNode.html#equals-java.lang.Object-"><code>RexNode.equals(java.lang.Object)</code></a></div> |
| </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#intValue-org.apache.calcite.rex.RexNode-">intValue</a></span>(<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a> node)</code> </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#isAlwaysFalse--">isAlwaysFalse</a></span>()</code> |
| <div class="block">Returns whether this expression always returns false.</div> |
| </td> |
| </tr> |
| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#isAlwaysTrue--">isAlwaysTrue</a></span>()</code> |
| <div class="block">Returns whether this expression always returns true.</div> |
| </td> |
| </tr> |
| <tr id="i18" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#isNull--">isNull</a></span>()</code> |
| <div class="block">Returns whether this literal's value is null.</div> |
| </td> |
| </tr> |
| <tr id="i19" class="rowColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#isNullLiteral-org.apache.calcite.rex.RexNode-">isNullLiteral</a></span>(<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a> node)</code> </td> |
| </tr> |
| <tr id="i20" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#printAsJava-java.io.PrintWriter-">printAsJava</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/PrintWriter.html?is-external=true" title="java.io中的类或接口">PrintWriter</a> pw)</code> |
| <div class="block">Prints the value this literal as a Java string constant.</div> |
| </td> |
| </tr> |
| <tr id="i21" class="rowColor"> |
| <td class="colFirst"><code>static <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/rex/RexLiteral.html#stringValue-org.apache.calcite.rex.RexNode-">stringValue</a></span>(<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a> node)</code> </td> |
| </tr> |
| <tr id="i22" class="altColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#validConstant-java.lang.Object-org.apache.calcite.util.Litmus-">validConstant</a></span>(<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> o, |
| <a href="../../../../org/apache/calcite/util/Litmus.html" title="org.apache.calcite.util中的接口">Litmus</a> litmus)</code> |
| <div class="block">Returns whether a value is valid as a constant value, using the same |
| criteria as <a href="../../../../org/apache/calcite/rex/RexLiteral.html#valueMatchesType-java.lang.Comparable-org.apache.calcite.sql.type.SqlTypeName-boolean-"><code>valueMatchesType(java.lang.Comparable, org.apache.calcite.sql.type.SqlTypeName, boolean)</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i23" class="rowColor"> |
| <td class="colFirst"><code>static <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></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#value-org.apache.calcite.rex.RexNode-">value</a></span>(<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a> node)</code> </td> |
| </tr> |
| <tr id="i24" class="altColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/rex/RexLiteral.html#valueMatchesType-java.lang.Comparable-org.apache.calcite.sql.type.SqlTypeName-boolean-">valueMatchesType</a></span>(<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> value, |
| <a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html" title="org.apache.calcite.sql.type中的枚举">SqlTypeName</a> typeName, |
| boolean strict)</code> </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.org.apache.calcite.rex.RexNode"> |
| <!-- --> |
| </a> |
| <h3>从类继承的方法 org.apache.calcite.rex.<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></h3> |
| <code><a href="../../../../org/apache/calcite/rex/RexNode.html#isA-java.util.Collection-">isA</a>, <a href="../../../../org/apache/calcite/rex/RexNode.html#isA-org.apache.calcite.sql.SqlKind-">isA</a>, <a href="../../../../org/apache/calcite/rex/RexNode.html#needNormalize--">needNormalize</a>, <a href="../../../../org/apache/calcite/rex/RexNode.html#nodeCount--">nodeCount</a>, <a href="../../../../org/apache/calcite/rex/RexNode.html#skipNormalize--">skipNormalize</a>, <a href="../../../../org/apache/calcite/rex/RexNode.html#toString--">toString</a>, <a href="../../../../org/apache/calcite/rex/RexNode.html#toStringRaw--">toStringRaw</a>, <a href="../../../../org/apache/calcite/rex/RexNode.html#withNormalize-boolean-">withNormalize</a></code></li> |
| </ul> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a> |
| <h3>从类继承的方法 java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="java.lang中的类或接口">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#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#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#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> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.detail"> |
| <!-- --> |
| </a> |
| <h3>方法详细资料</h3> |
| <a name="computeDigest-org.apache.calcite.rex.RexDigestIncludeType-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>computeDigest</h4> |
| <pre>public final <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> computeDigest(<a href="../../../../org/apache/calcite/rex/RexDigestIncludeType.html" title="org.apache.calcite.rex中的枚举">RexDigestIncludeType</a> includeType)</pre> |
| <div class="block">Returns a string which concisely describes the definition of this |
| rex literal. Two literals are equivalent if and only if their digests are the same. |
| |
| <p>The digest does not contain the expression's identity, but does include the identity |
| of children. |
| |
| <p>Technically speaking 1:INT differs from 1:FLOAT, so we need data type in the literal's |
| digest, however we want to avoid extra verbosity of the <a href="../../../../org/apache/calcite/plan/RelOptNode.html#getDigest--"><code>RelOptNode.getDigest()</code></a> for |
| readability purposes, so we omit type info in certain cases. |
| For instance, 1:INT becomes 1 (INT is implied by default), however 1:BIGINT always holds |
| the type |
| |
| <p>Here's a non-exhaustive list of the "well known cases": |
| <ul><li>Hide "NOT NULL" for not null literals |
| <li>Hide INTEGER, BOOLEAN, SYMBOL, TIME(0), TIMESTAMP(0), DATE(0) types |
| <li>Hide collation when it matches IMPLICIT/COERCIBLE |
| <li>Hide charset when it matches default |
| <li>Hide CHAR(xx) when literal length is equal to the precision of the type. |
| In other words, use 'Bob' instead of 'Bob':CHAR(3) |
| <li>Hide BOOL for AND/OR arguments. In other words, AND(true, null) means |
| null is BOOL. |
| <li>Hide types for literals in simple binary operations (e.g. +, -, *, /, |
| comparison) when type of the other argument is clear. |
| See <a href="../../../../org/apache/calcite/rex/RexCall.html#computeDigest-boolean-"><code>RexCall.computeDigest(boolean)</code></a> |
| For instance: =(true. null) means null is BOOL. =($0, null) means the type |
| of null matches the type of $0. |
| </ul></div> |
| <dl> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>includeType</code> - whether the digest should include type or not</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>digest</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="valueMatchesType-java.lang.Comparable-org.apache.calcite.sql.type.SqlTypeName-boolean-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>valueMatchesType</h4> |
| <pre>public static boolean valueMatchesType(<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> value, |
| <a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html" title="org.apache.calcite.sql.type中的枚举">SqlTypeName</a> typeName, |
| boolean strict)</pre> |
| <dl> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>whether value is appropriate for its type (we have rules about |
| these things)</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="validConstant-java.lang.Object-org.apache.calcite.util.Litmus-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>validConstant</h4> |
| <pre>public static boolean validConstant(<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> o, |
| <a href="../../../../org/apache/calcite/util/Litmus.html" title="org.apache.calcite.util中的接口">Litmus</a> litmus)</pre> |
| <div class="block">Returns whether a value is valid as a constant value, using the same |
| criteria as <a href="../../../../org/apache/calcite/rex/RexLiteral.html#valueMatchesType-java.lang.Comparable-org.apache.calcite.sql.type.SqlTypeName-boolean-"><code>valueMatchesType(java.lang.Comparable, org.apache.calcite.sql.type.SqlTypeName, boolean)</code></a>.</div> |
| </li> |
| </ul> |
| <a name="printAsJava-java.io.PrintWriter-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>printAsJava</h4> |
| <pre>public void printAsJava(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/PrintWriter.html?is-external=true" title="java.io中的类或接口">PrintWriter</a> pw)</pre> |
| <div class="block">Prints the value this literal as a Java string constant.</div> |
| </li> |
| </ul> |
| <a name="fromJdbcString-org.apache.calcite.rel.type.RelDataType-org.apache.calcite.sql.type.SqlTypeName-java.lang.String-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>fromJdbcString</h4> |
| <pre>public static <a href="../../../../org/apache/calcite/rex/RexLiteral.html" title="org.apache.calcite.rex中的类">RexLiteral</a> fromJdbcString(<a href="../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a> type, |
| <a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html" title="org.apache.calcite.sql.type中的枚举">SqlTypeName</a> typeName, |
| <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> literal)</pre> |
| <div class="block">Converts a Jdbc string into a RexLiteral. This method accepts a string, |
| as returned by the Jdbc method ResultSet.getString(), and restores the |
| string into an equivalent RexLiteral. It allows one to use Jdbc strings |
| as a common format for data. |
| |
| <p>If a null literal is provided, then a null pointer will be returned.</div> |
| <dl> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>type</code> - data type of literal to be read</dd> |
| <dd><code>typeName</code> - type family of literal</dd> |
| <dd><code>literal</code> - the (non-SQL encoded) string representation, as returned |
| by the Jdbc call to return a column as a string</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>a typed RexLiteral, or null</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getTypeName--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getTypeName</h4> |
| <pre>public <a href="../../../../org/apache/calcite/sql/type/SqlTypeName.html" title="org.apache.calcite.sql.type中的枚举">SqlTypeName</a> getTypeName()</pre> |
| </li> |
| </ul> |
| <a name="getType--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getType</h4> |
| <pre>public <a href="../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a> getType()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/rex/RexNode.html#getType--">getType</a></code> 在类中 <code><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getKind--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getKind</h4> |
| <pre>public <a href="../../../../org/apache/calcite/sql/SqlKind.html" title="org.apache.calcite.sql中的枚举">SqlKind</a> getKind()</pre> |
| <div class="block"><span class="descfrmTypeLabel">从类复制的说明: <code><a href="../../../../org/apache/calcite/rex/RexNode.html#getKind--">RexNode</a></code></span></div> |
| <div class="block">Returns the kind of node this is.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">覆盖:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/rex/RexNode.html#getKind--">getKind</a></code> 在类中 <code><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>Node kind, never null</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="isNull--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isNull</h4> |
| <pre>public boolean isNull()</pre> |
| <div class="block">Returns whether this literal's value is null.</div> |
| </li> |
| </ul> |
| <a name="getValue--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getValue</h4> |
| <pre>public <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> getValue()</pre> |
| <div class="block">Returns the value of this literal. |
| |
| <p>For backwards compatibility, returns DATE. TIME and TIMESTAMP as a |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Calendar.html?is-external=true" title="java.util中的类或接口"><code>Calendar</code></a> value in UTC time zone.</div> |
| </li> |
| </ul> |
| <a name="getValue2--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getValue2</h4> |
| <pre>public <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> getValue2()</pre> |
| <div class="block">Returns the value of this literal, in the form that the calculator |
| program builder wants it.</div> |
| </li> |
| </ul> |
| <a name="getValue3--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getValue3</h4> |
| <pre>public <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> getValue3()</pre> |
| <div class="block">Returns the value of this literal, in the form that the rex-to-lix |
| translator wants it.</div> |
| </li> |
| </ul> |
| <a name="getValue4--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getValue4</h4> |
| <pre>public <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> getValue4()</pre> |
| <div class="block">Returns the value of this literal, in the form that <a href="../../../../org/apache/calcite/rex/RexInterpreter.html" title="org.apache.calcite.rex中的类"><code>RexInterpreter</code></a> |
| wants it.</div> |
| </li> |
| </ul> |
| <a name="getValueAs-java.lang.Class-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getValueAs</h4> |
| <pre>public <T> T getValueAs(<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><T> clazz)</pre> |
| <div class="block">Returns the value of this literal as an instance of the specified class. |
| |
| <p>The following SQL types allow more than one form: |
| |
| <ul> |
| <li>CHAR as <a href="../../../../org/apache/calcite/util/NlsString.html" title="org.apache.calcite.util中的类"><code>NlsString</code></a> or <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"><code>String</code></a> |
| <li>TIME as <a href="../../../../org/apache/calcite/util/TimeString.html" title="org.apache.calcite.util中的类"><code>TimeString</code></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"><code>Integer</code></a> (milliseconds since midnight), |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Calendar.html?is-external=true" title="java.util中的类或接口"><code>Calendar</code></a> (in UTC) |
| <li>DATE as <a href="../../../../org/apache/calcite/util/DateString.html" title="org.apache.calcite.util中的类"><code>DateString</code></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"><code>Integer</code></a> (days since 1970-01-01), |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Calendar.html?is-external=true" title="java.util中的类或接口"><code>Calendar</code></a> |
| <li>TIMESTAMP as <a href="../../../../org/apache/calcite/util/TimestampString.html" title="org.apache.calcite.util中的类"><code>TimestampString</code></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> (milliseconds since 1970-01-01 00:00:00), |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Calendar.html?is-external=true" title="java.util中的类或接口"><code>Calendar</code></a> |
| <li>DECIMAL as <a href="https://docs.oracle.com/javase/8/docs/api/java/math/BigDecimal.html?is-external=true" title="java.math中的类或接口"><code>BigDecimal</code></a> or <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> |
| </ul> |
| |
| <p>Called with <code>clazz</code> = <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>, returns the value in |
| its native form.</div> |
| <dl> |
| <dt><span class="paramLabel">类型参数:</span></dt> |
| <dd><code>T</code> - Return type</dd> |
| <dt><span class="paramLabel">参数:</span></dt> |
| <dd><code>clazz</code> - Desired return type</dd> |
| <dt><span class="returnLabel">返回:</span></dt> |
| <dd>Value of this literal in the desired type</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="booleanValue-org.apache.calcite.rex.RexNode-"> |
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| </a> |
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| <h4>booleanValue</h4> |
| <pre>public static boolean booleanValue(<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a> node)</pre> |
| </li> |
| </ul> |
| <a name="isAlwaysTrue--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isAlwaysTrue</h4> |
| <pre>public boolean isAlwaysTrue()</pre> |
| <div class="block"><span class="descfrmTypeLabel">从类复制的说明: <code><a href="../../../../org/apache/calcite/rex/RexNode.html#isAlwaysTrue--">RexNode</a></code></span></div> |
| <div class="block">Returns whether this expression always returns true. (Such as if this |
| expression is equal to the literal <code>TRUE</code>.)</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">覆盖:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/rex/RexNode.html#isAlwaysTrue--">isAlwaysTrue</a></code> 在类中 <code><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="isAlwaysFalse--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isAlwaysFalse</h4> |
| <pre>public boolean isAlwaysFalse()</pre> |
| <div class="block"><span class="descfrmTypeLabel">从类复制的说明: <code><a href="../../../../org/apache/calcite/rex/RexNode.html#isAlwaysFalse--">RexNode</a></code></span></div> |
| <div class="block">Returns whether this expression always returns false. (Such as if this |
| expression is equal to the literal <code>FALSE</code>.)</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">覆盖:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/rex/RexNode.html#isAlwaysFalse--">isAlwaysFalse</a></code> 在类中 <code><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="equals-java.lang.Object-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>equals</h4> |
| <pre>public boolean equals(<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> obj)</pre> |
| <div class="block"><span class="descfrmTypeLabel">从类复制的说明: <code><a href="../../../../org/apache/calcite/rex/RexNode.html#equals-java.lang.Object-">RexNode</a></code></span></div> |
| <div class="block"> |
| |
| <p>Every node must implement <a href="../../../../org/apache/calcite/rex/RexNode.html#equals-java.lang.Object-"><code>RexNode.equals(java.lang.Object)</code></a> based on its content</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/rex/RexNode.html#equals-java.lang.Object-">equals</a></code> 在类中 <code><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="hashCode--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>hashCode</h4> |
| <pre>public int hashCode()</pre> |
| <div class="block"><span class="descfrmTypeLabel">从类复制的说明: <code><a href="../../../../org/apache/calcite/rex/RexNode.html#hashCode--">RexNode</a></code></span></div> |
| <div class="block"> |
| |
| <p>Every node must implement <a href="../../../../org/apache/calcite/rex/RexNode.html#hashCode--"><code>RexNode.hashCode()</code></a> consistent with |
| <a href="../../../../org/apache/calcite/rex/RexNode.html#equals-java.lang.Object-"><code>RexNode.equals(java.lang.Object)</code></a></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/rex/RexNode.html#hashCode--">hashCode</a></code> 在类中 <code><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="value-org.apache.calcite.rex.RexNode-"> |
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| </a> |
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| <h4>value</h4> |
| <pre>public static <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> value(<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a> node)</pre> |
| </li> |
| </ul> |
| <a name="intValue-org.apache.calcite.rex.RexNode-"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>intValue</h4> |
| <pre>public static int intValue(<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a> node)</pre> |
| </li> |
| </ul> |
| <a name="stringValue-org.apache.calcite.rex.RexNode-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>stringValue</h4> |
| <pre>public static <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> stringValue(<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a> node)</pre> |
| </li> |
| </ul> |
| <a name="isNullLiteral-org.apache.calcite.rex.RexNode-"> |
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| </a> |
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| <h4>isNullLiteral</h4> |
| <pre>public static boolean isNullLiteral(<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a> node)</pre> |
| </li> |
| </ul> |
| <a name="accept-org.apache.calcite.rex.RexVisitor-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>accept</h4> |
| <pre>public <R> R accept(<a href="../../../../org/apache/calcite/rex/RexVisitor.html" title="org.apache.calcite.rex中的接口">RexVisitor</a><R> visitor)</pre> |
| <div class="block"><span class="descfrmTypeLabel">从类复制的说明: <code><a href="../../../../org/apache/calcite/rex/RexNode.html#accept-org.apache.calcite.rex.RexVisitor-">RexNode</a></code></span></div> |
| <div class="block">Accepts a visitor, dispatching to the right overloaded |
| <a href="../../../../org/apache/calcite/rex/RexVisitor.html#visitInputRef-org.apache.calcite.rex.RexInputRef-"><code>visitXxx</code></a> method. |
| |
| <p>Also see <a href="../../../../org/apache/calcite/rex/RexUtil.html#apply-org.apache.calcite.rex.RexVisitor-java.util.List-org.apache.calcite.rex.RexNode-"><code>RexUtil.apply(RexVisitor, java.util.List, RexNode)</code></a>, |
| which applies a visitor to several expressions simultaneously.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/rex/RexNode.html#accept-org.apache.calcite.rex.RexVisitor-">accept</a></code> 在类中 <code><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="accept-org.apache.calcite.rex.RexBiVisitor-java.lang.Object-"> |
| <!-- --> |
| </a><a name="accept-org.apache.calcite.rex.RexBiVisitor-P-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>accept</h4> |
| <pre>public <R,P> R accept(<a href="../../../../org/apache/calcite/rex/RexBiVisitor.html" title="org.apache.calcite.rex中的接口">RexBiVisitor</a><R,P> visitor, |
| P arg)</pre> |
| <div class="block"><span class="descfrmTypeLabel">从类复制的说明: <code><a href="../../../../org/apache/calcite/rex/RexNode.html#accept-org.apache.calcite.rex.RexBiVisitor-P-">RexNode</a></code></span></div> |
| <div class="block">Accepts a visitor with a payload, dispatching to the right overloaded |
| <a href="../../../../org/apache/calcite/rex/RexBiVisitor.html#visitInputRef-org.apache.calcite.rex.RexInputRef-P-"><code>RexBiVisitor.visitInputRef(RexInputRef, Object)</code></a> visitXxx} method.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../org/apache/calcite/rex/RexNode.html#accept-org.apache.calcite.rex.RexBiVisitor-P-">accept</a></code> 在类中 <code><a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
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| <li>概要: </li> |
| <li><a href="#nested.classes.inherited.from.class.org.apache.calcite.rex.RexNode">嵌套</a> | </li> |
| <li><a href="#fields.inherited.from.class.org.apache.calcite.rex.RexNode">字段</a> | </li> |
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