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| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.calcite.sql2rel</a></div> |
| <h1 title="Interface SqlRexContext" class="title">Interface SqlRexContext</h1> |
| </div> |
| <section class="class-description" id="class-description"> |
| <dl class="notes"> |
| <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> |
| </dl> |
| <hr> |
| <div class="type-signature"><span class="modifiers">public interface </span><span class="element-name type-name-label">SqlRexContext</span></div> |
| <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> |
| </section> |
| <section class="summary"> |
| <ul class="summary-list"> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <section class="method-summary" id="method-summary"> |
| <h2>Method Summary</h2> |
| <div id="method-summary-table"> |
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| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Method</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#convertExpression(org.apache.calcite.sql.SqlNode)" class="member-name-link">convertExpression</a><wbr>(<a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> expr)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"> |
| <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> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#convertLiteral(org.apache.calcite.sql.SqlLiteral)" class="member-name-link">convertLiteral</a><wbr>(<a href="../sql/SqlLiteral.html" title="class in org.apache.calcite.sql">SqlLiteral</a> literal)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"> |
| <div class="block">Converts a literal.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code>int</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#getGroupCount()" class="member-name-link">getGroupCount</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"> |
| <div class="block">If the operator call occurs in an aggregate query, returns the number of |
| columns in the GROUP BY clause.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="InitializerExpressionFactory.html" title="interface in org.apache.calcite.sql2rel">InitializerExpressionFactory</a></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#getInitializerExpressionFactory()" class="member-name-link">getInitializerExpressionFactory</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"> |
| <div class="block">Returns the factory which supplies default values for INSERT, UPDATE, and |
| NEW.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#getRexBuilder()" class="member-name-link">getRexBuilder</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"> |
| <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> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="../rex/RexRangeRef.html" title="class in org.apache.calcite.rex">RexRangeRef</a></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#getSubQueryExpr(org.apache.calcite.sql.SqlCall)" class="member-name-link">getSubQueryExpr</a><wbr>(<a href="../sql/SqlCall.html" title="class in org.apache.calcite.sql">SqlCall</a> call)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"> |
| <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> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="../rel/type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#getTypeFactory()" class="member-name-link">getTypeFactory</a>()</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"> |
| <div class="block">Returns the type factory.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="../sql/validate/SqlValidator.html" title="interface in org.apache.calcite.sql.validate">SqlValidator</a></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#getValidator()" class="member-name-link">getValidator</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"> |
| <div class="block">Returns the validator.</div> |
| </div> |
| </div> |
| </div> |
| </div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li> |
| <section class="method-details" id="method-detail"> |
| <h2>Method Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="convertExpression(org.apache.calcite.sql.SqlNode)"> |
| <h3>convertExpression</h3> |
| <div class="member-signature"><span class="return-type"><a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></span> <span class="element-name">convertExpression</span><wbr><span class="parameters">(<a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> expr)</span></div> |
| <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 class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>expr</code> - Expression to translate</dd> |
| <dt>Returns:</dt> |
| <dd>Converted expression</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getGroupCount()"> |
| <h3>getGroupCount</h3> |
| <div class="member-signature"><span class="return-type">int</span> <span class="element-name">getGroupCount</span>()</div> |
| <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 class="notes"> |
| <dt>Returns:</dt> |
| <dd>0 if the query is implicitly GROUP BY (), -1 if the query is not |
| and aggregate query</dd> |
| <dt>See Also:</dt> |
| <dd> |
| <ul class="see-list-long"> |
| <li><a href="../sql/SqlOperatorBinding.html#getGroupCount()"><code>SqlOperatorBinding.getGroupCount()</code></a></li> |
| </ul> |
| </dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getRexBuilder()"> |
| <h3>getRexBuilder</h3> |
| <div class="member-signature"><span class="return-type"><a href="../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a></span> <span class="element-name">getRexBuilder</span>()</div> |
| <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> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getSubQueryExpr(org.apache.calcite.sql.SqlCall)"> |
| <h3>getSubQueryExpr</h3> |
| <div class="member-signature"><span class="return-type"><a href="../rex/RexRangeRef.html" title="class in org.apache.calcite.rex">RexRangeRef</a></span> <span class="element-name">getSubQueryExpr</span><wbr><span class="parameters">(<a href="../sql/SqlCall.html" title="class in org.apache.calcite.sql">SqlCall</a> call)</span></div> |
| <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 class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>call</code> - IN or EXISTS expression</dd> |
| <dt>Returns:</dt> |
| <dd>Expression used to access current row of sub-query</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getTypeFactory()"> |
| <h3>getTypeFactory</h3> |
| <div class="member-signature"><span class="return-type"><a href="../rel/type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a></span> <span class="element-name">getTypeFactory</span>()</div> |
| <div class="block">Returns the type factory.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getInitializerExpressionFactory()"> |
| <h3>getInitializerExpressionFactory</h3> |
| <div class="member-signature"><span class="return-type"><a href="InitializerExpressionFactory.html" title="interface in org.apache.calcite.sql2rel">InitializerExpressionFactory</a></span> <span class="element-name">getInitializerExpressionFactory</span>()</div> |
| <div class="block">Returns the factory which supplies default values for INSERT, UPDATE, and |
| NEW.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="getValidator()"> |
| <h3>getValidator</h3> |
| <div class="member-signature"><span class="return-type"><a href="../sql/validate/SqlValidator.html" title="interface in org.apache.calcite.sql.validate">SqlValidator</a></span> <span class="element-name">getValidator</span>()</div> |
| <div class="block">Returns the validator.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="convertLiteral(org.apache.calcite.sql.SqlLiteral)"> |
| <h3>convertLiteral</h3> |
| <div class="member-signature"><span class="return-type"><a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></span> <span class="element-name">convertLiteral</span><wbr><span class="parameters">(<a href="../sql/SqlLiteral.html" title="class in org.apache.calcite.sql">SqlLiteral</a> literal)</span></div> |
| <div class="block">Converts a literal.</div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
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