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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.sql2rel</a></div> |
| <h2 title="Interface SqlRexContext" class="title">Interface SqlRexContext</h2> |
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| <dt>All Known Implementing Classes:</dt> |
| <dd><code><a href="SqlToRelConverter.Blackboard.html" title="class in org.apache.calcite.sql2rel">SqlToRelConverter.Blackboard</a></code></dd> |
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| <pre>public interface <span class="typeNameLabel">SqlRexContext</span></pre> |
| <div class="block">Contains the context necessary for a <a href="SqlRexConvertlet.html" title="interface in org.apache.calcite.sql2rel"><code>SqlRexConvertlet</code></a> to convert a |
| <a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql"><code>SqlNode</code></a> expression into a <a href="../rex/RexNode.html" title="class in org.apache.calcite.rex"><code>RexNode</code></a>.</div> |
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| <h3>Method Summary</h3> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertExpression(org.apache.calcite.sql.SqlNode)">convertExpression</a></span>​(<a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> expr)</code></th> |
| <td class="colLast"> |
| <div class="block">Converts an expression from <a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql"><code>SqlNode</code></a> to <a href="../rex/RexNode.html" title="class in org.apache.calcite.rex"><code>RexNode</code></a> format.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertLiteral(org.apache.calcite.sql.SqlLiteral)">convertLiteral</a></span>​(<a href="../sql/SqlLiteral.html" title="class in org.apache.calcite.sql">SqlLiteral</a> literal)</code></th> |
| <td class="colLast"> |
| <div class="block">Converts a literal.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getGroupCount()">getGroupCount</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">If the operator call occurs in an aggregate query, returns the number of |
| columns in the GROUP BY clause.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="InitializerExpressionFactory.html" title="interface in org.apache.calcite.sql2rel">InitializerExpressionFactory</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getInitializerExpressionFactory()">getInitializerExpressionFactory</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the factory which supplies default values for INSERT, UPDATE, and |
| NEW.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getRexBuilder()">getRexBuilder</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the <a href="../rex/RexBuilder.html" title="class in org.apache.calcite.rex"><code>RexBuilder</code></a> to use to create <a href="../rex/RexNode.html" title="class in org.apache.calcite.rex"><code>RexNode</code></a> objects.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="../rex/RexRangeRef.html" title="class in org.apache.calcite.rex">RexRangeRef</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSubQueryExpr(org.apache.calcite.sql.SqlCall)">getSubQueryExpr</a></span>​(<a href="../sql/SqlCall.html" title="class in org.apache.calcite.sql">SqlCall</a> call)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the expression used to access a given IN or EXISTS |
| <a href="../sql/SqlSelect.html" title="class in org.apache.calcite.sql"><code>sub-query</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code><a href="../rel/type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTypeFactory()">getTypeFactory</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the type factory.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code><a href="../sql/validate/SqlValidator.html" title="interface in org.apache.calcite.sql.validate">SqlValidator</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getValidator()">getValidator</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the validator.</div> |
| </td> |
| </tr> |
| </table> |
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| <a id="convertExpression(org.apache.calcite.sql.SqlNode)"> |
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| <li class="blockList"> |
| <h4>convertExpression</h4> |
| <pre class="methodSignature"><a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a> convertExpression​(<a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> expr)</pre> |
| <div class="block">Converts an expression from <a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql"><code>SqlNode</code></a> to <a href="../rex/RexNode.html" title="class in org.apache.calcite.rex"><code>RexNode</code></a> format.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>expr</code> - Expression to translate</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Converted expression</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getGroupCount()"> |
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| <h4>getGroupCount</h4> |
| <pre class="methodSignature">int getGroupCount()</pre> |
| <div class="block">If the operator call occurs in an aggregate query, returns the number of |
| columns in the GROUP BY clause. For example, for "SELECT count(*) FROM emp |
| GROUP BY deptno, gender", returns 2. |
| If the operator call occurs in window aggregate query, then returns 1 if |
| the window is guaranteed to be non-empty, or 0 if the window might be |
| empty. |
| |
| <p>Returns 0 if the query is implicitly "GROUP BY ()" because of an |
| aggregate expression. For example, "SELECT sum(sal) FROM emp".</p> |
| |
| <p>Returns -1 if the query is not an aggregate query.</p></div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>0 if the query is implicitly GROUP BY (), -1 if the query is not |
| and aggregate query</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../sql/SqlOperatorBinding.html#getGroupCount()"><code>SqlOperatorBinding.getGroupCount()</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getRexBuilder()"> |
| <!-- --> |
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| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getRexBuilder</h4> |
| <pre class="methodSignature"><a href="../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a> getRexBuilder()</pre> |
| <div class="block">Returns the <a href="../rex/RexBuilder.html" title="class in org.apache.calcite.rex"><code>RexBuilder</code></a> to use to create <a href="../rex/RexNode.html" title="class in org.apache.calcite.rex"><code>RexNode</code></a> objects.</div> |
| </li> |
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| <a id="getSubQueryExpr(org.apache.calcite.sql.SqlCall)"> |
| <!-- --> |
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| <h4>getSubQueryExpr</h4> |
| <pre class="methodSignature"><a href="../rex/RexRangeRef.html" title="class in org.apache.calcite.rex">RexRangeRef</a> getSubQueryExpr​(<a href="../sql/SqlCall.html" title="class in org.apache.calcite.sql">SqlCall</a> call)</pre> |
| <div class="block">Returns the expression used to access a given IN or EXISTS |
| <a href="../sql/SqlSelect.html" title="class in org.apache.calcite.sql"><code>sub-query</code></a>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>call</code> - IN or EXISTS expression</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Expression used to access current row of sub-query</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>getTypeFactory</h4> |
| <pre class="methodSignature"><a href="../rel/type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a> getTypeFactory()</pre> |
| <div class="block">Returns the type factory.</div> |
| </li> |
| </ul> |
| <a id="getInitializerExpressionFactory()"> |
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| <h4>getInitializerExpressionFactory</h4> |
| <pre class="methodSignature"><a href="InitializerExpressionFactory.html" title="interface in org.apache.calcite.sql2rel">InitializerExpressionFactory</a> getInitializerExpressionFactory()</pre> |
| <div class="block">Returns the factory which supplies default values for INSERT, UPDATE, and |
| NEW.</div> |
| </li> |
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| <h4>getValidator</h4> |
| <pre class="methodSignature"><a href="../sql/validate/SqlValidator.html" title="interface in org.apache.calcite.sql.validate">SqlValidator</a> getValidator()</pre> |
| <div class="block">Returns the validator.</div> |
| </li> |
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| <h4>convertLiteral</h4> |
| <pre class="methodSignature"><a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a> convertLiteral​(<a href="../sql/SqlLiteral.html" title="class in org.apache.calcite.sql">SqlLiteral</a> literal)</pre> |
| <div class="block">Converts a literal.</div> |
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