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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.sql.type</a></div> |
| <h1 title="Class LiteralOperandTypeChecker" class="title">Class LiteralOperandTypeChecker</h1> |
| </div> |
| <div class="contentContainer"> |
| <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">java.lang.Object</a> |
| <div class="inheritance">org.apache.calcite.sql.type.LiteralOperandTypeChecker</div> |
| </div> |
| <section class="description"> |
| <dl> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><code><a href="SqlOperandTypeChecker.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeChecker</a></code>, <code><a href="SqlSingleOperandTypeChecker.html" title="interface in org.apache.calcite.sql.type">SqlSingleOperandTypeChecker</a></code></dd> |
| </dl> |
| <hr> |
| <pre>public class <span class="typeNameLabel">LiteralOperandTypeChecker</span> |
| extends <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a> |
| implements <a href="SqlSingleOperandTypeChecker.html" title="interface in org.apache.calcite.sql.type">SqlSingleOperandTypeChecker</a></pre> |
| <div class="block">Parameter type-checking strategy type must be a literal (whether null is |
| allowed is determined by the constructor). <code>CAST(NULL as ...)</code> is |
| considered to be a NULL literal but not <code>CAST(CAST(NULL as ...) AS |
| ...)</code></div> |
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| <h2>Nested classes/interfaces inherited from interface org.apache.calcite.sql.type.<a href="SqlOperandTypeChecker.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeChecker</a></h2> |
| <a id="nested.classes.inherited.from.class.org.apache.calcite.sql.type.SqlOperandTypeChecker"> |
| <!-- --> |
| </a><code><a href="SqlOperandTypeChecker.Consistency.html" title="enum in org.apache.calcite.sql.type">SqlOperandTypeChecker.Consistency</a></code></div> |
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| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <thead> |
| <tr> |
| <th class="colFirst" scope="col">Constructor</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="altColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(boolean)">LiteralOperandTypeChecker</a></span>​(boolean allowNull)</code></th> |
| <td class="colLast"> </td> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="altColor" id="i0"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#checkOperandTypes(org.apache.calcite.sql.SqlCallBinding,boolean)">checkOperandTypes</a></span>​(<a href="../SqlCallBinding.html" title="class in org.apache.calcite.sql">SqlCallBinding</a> callBinding, |
| boolean throwOnFailure)</code></th> |
| <td class="colLast"> |
| <div class="block">Checks the types of all operands to an operator call.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i1"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#checkSingleOperandType(org.apache.calcite.sql.SqlCallBinding,org.apache.calcite.sql.SqlNode,int,boolean)">checkSingleOperandType</a></span>​(<a href="../SqlCallBinding.html" title="class in org.apache.calcite.sql">SqlCallBinding</a> callBinding, |
| <a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> node, |
| int iFormalOperand, |
| boolean throwOnFailure)</code></th> |
| <td class="colLast"> |
| <div class="block">Checks the type of a single operand against a particular ordinal position |
| within a formal operator signature.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i2"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getAllowedSignatures(org.apache.calcite.sql.SqlOperator,java.lang.String)">getAllowedSignatures</a></span>​(<a href="../SqlOperator.html" title="class in org.apache.calcite.sql">SqlOperator</a> op, |
| <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> opName)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a string describing the allowed formal signatures of a call, e.g.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i3"> |
| <td class="colFirst"><code><a href="SqlOperandTypeChecker.Consistency.html" title="enum in org.apache.calcite.sql.type">SqlOperandTypeChecker.Consistency</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getConsistency()">getConsistency</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the strategy for making the arguments have consistency types.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i4"> |
| <td class="colFirst"><code><a href="../SqlOperandCountRange.html" title="interface in org.apache.calcite.sql">SqlOperandCountRange</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getOperandCountRange()">getOperandCountRange</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the range of operand counts allowed in a call.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i5"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isOptional(int)">isOptional</a></span>​(int i)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether the <code>i</code>th operand is optional.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| </div> |
| <div class="inheritedList"> |
| <h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></h3> |
| <a id="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang" class="externalLink">clone</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang" class="externalLink">equals</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink">finalize</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink">getClass</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang" class="externalLink">hashCode</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink">notifyAll</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang" class="externalLink">toString</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink">wait</a></code></div> |
| <div class="inheritedList"> |
| <h3>Methods inherited from interface org.apache.calcite.sql.type.<a href="SqlOperandTypeChecker.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeChecker</a></h3> |
| <a id="methods.inherited.from.class.org.apache.calcite.sql.type.SqlOperandTypeChecker"> |
| <!-- --> |
| </a><code><a href="SqlOperandTypeChecker.html#isFixedParameters()">isFixedParameters</a>, <a href="SqlOperandTypeChecker.html#typeInference()">typeInference</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="blockList"> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| <section class="constructorDetails"><a id="constructor.detail"> |
| <!-- --> |
| </a> |
| <h2>Constructor Details</h2> |
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| <section class="detail"> |
| <h3><a id="<init>(boolean)">LiteralOperandTypeChecker</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="memberName">LiteralOperandTypeChecker</span>​(<span class="arguments">boolean allowNull)</span></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li class="blockList"> |
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| <h2>Method Details</h2> |
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| <section class="detail"> |
| <h3><a id="isOptional(int)">isOptional</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">boolean</span> <span class="memberName">isOptional</span>​(<span class="arguments">int i)</span></div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="SqlOperandTypeChecker.html#isOptional(int)">SqlOperandTypeChecker</a></code></span></div> |
| <div class="block">Returns whether the <code>i</code>th operand is optional.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="SqlOperandTypeChecker.html#isOptional(int)">isOptional</a></code> in interface <code><a href="SqlOperandTypeChecker.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeChecker</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="checkSingleOperandType(org.apache.calcite.sql.SqlCallBinding,org.apache.calcite.sql.SqlNode,int,boolean)">checkSingleOperandType</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">boolean</span> <span class="memberName">checkSingleOperandType</span>​(<span class="arguments"><a href="../SqlCallBinding.html" title="class in org.apache.calcite.sql">SqlCallBinding</a> callBinding, |
| <a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> node, |
| int iFormalOperand, |
| boolean throwOnFailure)</span></div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="SqlSingleOperandTypeChecker.html#checkSingleOperandType(org.apache.calcite.sql.SqlCallBinding,org.apache.calcite.sql.SqlNode,int,boolean)">SqlSingleOperandTypeChecker</a></code></span></div> |
| <div class="block">Checks the type of a single operand against a particular ordinal position |
| within a formal operator signature. Note that the actual ordinal position |
| of the operand being checked may be <em>different</em> from the position |
| of the formal operand. |
| |
| <p>For example, when validating the actual call |
| |
| <blockquote> |
| <pre>C(X, Y, Z)</pre> |
| </blockquote> |
| |
| <p>the strategy for validating the operand Z might involve checking its |
| type against the formal signature OP(W). In this case, |
| <code>iFormalOperand</code> would be zero, even though the position of Z |
| within call C is two. |
| |
| <p>Caution that we could not(shouldn't) implement implicit type coercion for this checker, |
| implicit type coercion has side effect(modify the AST), if this single operand checker is |
| subsumed in a composite rule(OR or AND), we can not make any side effect if we |
| can not make sure that all the single operands type check are passed(with type coercion). |
| But there is an exception: only if the call has just one operand, for this case, |
| use <a href="SqlOperandTypeChecker.html#checkOperandTypes(org.apache.calcite.sql.SqlCallBinding,boolean)"><code>SqlOperandTypeChecker.checkOperandTypes(org.apache.calcite.sql.SqlCallBinding, boolean)</code></a> instead.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="SqlSingleOperandTypeChecker.html#checkSingleOperandType(org.apache.calcite.sql.SqlCallBinding,org.apache.calcite.sql.SqlNode,int,boolean)">checkSingleOperandType</a></code> in interface <code><a href="SqlSingleOperandTypeChecker.html" title="interface in org.apache.calcite.sql.type">SqlSingleOperandTypeChecker</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>callBinding</code> - description of the call being checked; this is only |
| provided for context when throwing an exception; the |
| implementation should <em>NOT</em> examine the |
| operands of the call as part of the check</dd> |
| <dd><code>node</code> - the actual operand to be checked</dd> |
| <dd><code>iFormalOperand</code> - the 0-based formal operand ordinal</dd> |
| <dd><code>throwOnFailure</code> - whether to throw an exception if check fails |
| (otherwise returns false in that case)</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>whether check succeeded</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="checkOperandTypes(org.apache.calcite.sql.SqlCallBinding,boolean)">checkOperandTypes</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType">boolean</span> <span class="memberName">checkOperandTypes</span>​(<span class="arguments"><a href="../SqlCallBinding.html" title="class in org.apache.calcite.sql">SqlCallBinding</a> callBinding, |
| boolean throwOnFailure)</span></div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="SqlOperandTypeChecker.html#checkOperandTypes(org.apache.calcite.sql.SqlCallBinding,boolean)">SqlOperandTypeChecker</a></code></span></div> |
| <div class="block">Checks the types of all operands to an operator call.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="SqlOperandTypeChecker.html#checkOperandTypes(org.apache.calcite.sql.SqlCallBinding,boolean)">checkOperandTypes</a></code> in interface <code><a href="SqlOperandTypeChecker.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeChecker</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>callBinding</code> - description of the call to be checked</dd> |
| <dd><code>throwOnFailure</code> - whether to throw an exception if check fails |
| (otherwise returns false in that case)</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>whether check succeeded</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getOperandCountRange()">getOperandCountRange</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType"><a href="../SqlOperandCountRange.html" title="interface in org.apache.calcite.sql">SqlOperandCountRange</a></span> <span class="memberName">getOperandCountRange</span>()</div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="SqlOperandTypeChecker.html#getOperandCountRange()">SqlOperandTypeChecker</a></code></span></div> |
| <div class="block">Returns the range of operand counts allowed in a call.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="SqlOperandTypeChecker.html#getOperandCountRange()">getOperandCountRange</a></code> in interface <code><a href="SqlOperandTypeChecker.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeChecker</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getAllowedSignatures(org.apache.calcite.sql.SqlOperator,java.lang.String)">getAllowedSignatures</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></span> <span class="memberName">getAllowedSignatures</span>​(<span class="arguments"><a href="../SqlOperator.html" title="class in org.apache.calcite.sql">SqlOperator</a> op, |
| <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> opName)</span></div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="SqlOperandTypeChecker.html#getAllowedSignatures(org.apache.calcite.sql.SqlOperator,java.lang.String)">SqlOperandTypeChecker</a></code></span></div> |
| <div class="block">Returns a string describing the allowed formal signatures of a call, e.g. |
| "SUBSTR(VARCHAR, INTEGER, INTEGER)".</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="SqlOperandTypeChecker.html#getAllowedSignatures(org.apache.calcite.sql.SqlOperator,java.lang.String)">getAllowedSignatures</a></code> in interface <code><a href="SqlOperandTypeChecker.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeChecker</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>op</code> - the operator being checked</dd> |
| <dd><code>opName</code> - name to use for the operator in case of aliasing</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>generated string</dd> |
| </dl> |
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| <h3><a id="getConsistency()">getConsistency</a></h3> |
| <div class="memberSignature"><span class="modifiers">public</span> <span class="returnType"><a href="SqlOperandTypeChecker.Consistency.html" title="enum in org.apache.calcite.sql.type">SqlOperandTypeChecker.Consistency</a></span> <span class="memberName">getConsistency</span>()</div> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="SqlOperandTypeChecker.html#getConsistency()">SqlOperandTypeChecker</a></code></span></div> |
| <div class="block">Returns the strategy for making the arguments have consistency types.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="SqlOperandTypeChecker.html#getConsistency()">getConsistency</a></code> in interface <code><a href="SqlOperandTypeChecker.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeChecker</a></code></dd> |
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