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| <title>Planner (Apache Calcite calcite API)</title> |
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| <div class="aboutLanguage"><b>Apache Calcite</b></div> |
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| <li>Summary: </li> |
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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.tools</a></div> |
| <h1 title="Interface Planner" class="title">Interface Planner</h1> |
| </div> |
| <div class="contentContainer"> |
| <section class="description"> |
| <dl> |
| <dt>All Superinterfaces:</dt> |
| <dd><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang" class="externalLink">AutoCloseable</a></code></dd> |
| </dl> |
| <dl> |
| <dt>All Known Implementing Classes:</dt> |
| <dd><code><a href="../prepare/PlannerImpl.html" title="class in org.apache.calcite.prepare">PlannerImpl</a></code></dd> |
| </dl> |
| <hr> |
| <pre>public interface <span class="typeNameLabel">Planner</span> |
| extends <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang" class="externalLink">AutoCloseable</a></pre> |
| <div class="block">A façade that covers Calcite's query planning process: parse SQL, |
| validate the parse tree, convert the parse tree to a relational expression, |
| and optimize the relational expression. |
| |
| <p>Planner is NOT thread safe. However, it can be reused for |
| different queries. The consumer of this interface is responsible for calling |
| reset() after each use of Planner that corresponds to a different |
| query.</div> |
| </section> |
| <section class="summary"> |
| <ul class="blockList"> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <h2>Method Summary</h2> |
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| <div role="tablist" aria-orientation="horizontal"><button role="tab" aria-selected="true" aria-controls="memberSummary_tabpanel" tabindex="0" onkeydown="switchTab(event)" id="t0" class="activeTableTab">All Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t2" class="tableTab" onclick="show(2);">Instance Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t3" class="tableTab" onclick="show(4);">Abstract Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t5" class="tableTab" onclick="show(16);">Default Methods</button><button role="tab" aria-selected="false" aria-controls="memberSummary_tabpanel" tabindex="-1" onkeydown="switchTab(event)" id="t6" class="tableTab" onclick="show(32);">Deprecated Methods</button></div> |
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| <table aria-labelledby="t0"> |
| <thead> |
| <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> |
| </thead> |
| <tbody> |
| <tr class="altColor" id="i0"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#close()">close</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Releases all internal resources utilized while this <code>Planner</code> |
| exists.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i1"> |
| <td class="colFirst"><code><a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convert(org.apache.calcite.sql.SqlNode)">convert</a></span>​(<a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> sql)</code></th> |
| <td class="colLast"> |
| <div class="block"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="deprecationComment">Use <a href="#rel(org.apache.calcite.sql.SqlNode)"><code>rel(org.apache.calcite.sql.SqlNode)</code></a>.</div> |
| </div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i2"> |
| <td class="colFirst"><code><a href="../plan/RelTraitSet.html" title="class in org.apache.calcite.plan">RelTraitSet</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getEmptyTraitSet()">getEmptyTraitSet</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor" id="i3"> |
| <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 class="altColor" id="i4"> |
| <td class="colFirst"><code><a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#parse(java.io.Reader)">parse</a></span>​(<a href="https://docs.oracle.com/javase/9/docs/api/java/io/Reader.html?is-external=true" title="class or interface in java.io" class="externalLink">Reader</a> source)</code></th> |
| <td class="colLast"> |
| <div class="block">Parses and validates a SQL statement.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i5"> |
| <td class="colFirst"><code>default <a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#parse(java.lang.String)">parse</a></span>​(<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> sql)</code></th> |
| <td class="colLast"> |
| <div class="block">Parses and validates a SQL statement.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i6"> |
| <td class="colFirst"><code><a href="../rel/RelRoot.html" title="class in org.apache.calcite.rel">RelRoot</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#rel(org.apache.calcite.sql.SqlNode)">rel</a></span>​(<a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> sql)</code></th> |
| <td class="colLast"> |
| <div class="block">Converts a SQL parse tree into a tree of relational expressions.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i7"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#reset()">reset</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Resets this <code>Planner</code> to be used with a new query.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i8"> |
| <td class="colFirst"><code><a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#transform(int,org.apache.calcite.plan.RelTraitSet,org.apache.calcite.rel.RelNode)">transform</a></span>​(int ruleSetIndex, |
| <a href="../plan/RelTraitSet.html" title="class in org.apache.calcite.plan">RelTraitSet</a> requiredOutputTraits, |
| <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel)</code></th> |
| <td class="colLast"> |
| <div class="block">Converts one relational expression tree into another relational expression |
| based on a particular rule set and requires set of traits.</div> |
| </td> |
| </tr> |
| <tr class="rowColor" id="i9"> |
| <td class="colFirst"><code><a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#validate(org.apache.calcite.sql.SqlNode)">validate</a></span>​(<a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> sqlNode)</code></th> |
| <td class="colLast"> |
| <div class="block">Validates a SQL statement.</div> |
| </td> |
| </tr> |
| <tr class="altColor" id="i10"> |
| <td class="colFirst"><code><a href="../util/Pair.html" title="class in org.apache.calcite.util">Pair</a><<a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>,​<a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#validateAndGetType(org.apache.calcite.sql.SqlNode)">validateAndGetType</a></span>​(<a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> sqlNode)</code></th> |
| <td class="colLast"> |
| <div class="block">Validates a SQL statement.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| </div> |
| </section> |
| </li> |
| </ul> |
| </section> |
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| <h3><a id="parse(java.lang.String)">parse</a></h3> |
| <div class="memberSignature"><span class="modifiers">default</span> <span class="returnType"><a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></span> <span class="memberName">parse</span>​(<span class="arguments"><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> sql)</span> |
| throws <span class="exceptions"><a href="../sql/parser/SqlParseException.html" title="class in org.apache.calcite.sql.parser">SqlParseException</a></span></div> |
| <div class="block">Parses and validates a SQL statement.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>sql</code> - The SQL statement to parse.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The root node of the SQL parse tree.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../sql/parser/SqlParseException.html" title="class in org.apache.calcite.sql.parser">SqlParseException</a></code> - on parse error</dd> |
| </dl> |
| </section> |
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| <section class="detail"> |
| <h3><a id="parse(java.io.Reader)">parse</a></h3> |
| <div class="memberSignature"><span class="returnType"><a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></span> <span class="memberName">parse</span>​(<span class="arguments"><a href="https://docs.oracle.com/javase/9/docs/api/java/io/Reader.html?is-external=true" title="class or interface in java.io" class="externalLink">Reader</a> source)</span> |
| throws <span class="exceptions"><a href="../sql/parser/SqlParseException.html" title="class in org.apache.calcite.sql.parser">SqlParseException</a></span></div> |
| <div class="block">Parses and validates a SQL statement.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>source</code> - A reader which will provide the SQL statement to parse.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The root node of the SQL parse tree.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../sql/parser/SqlParseException.html" title="class in org.apache.calcite.sql.parser">SqlParseException</a></code> - on parse error</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="validate(org.apache.calcite.sql.SqlNode)">validate</a></h3> |
| <div class="memberSignature"><span class="returnType"><a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a></span> <span class="memberName">validate</span>​(<span class="arguments"><a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> sqlNode)</span> |
| throws <span class="exceptions"><a href="ValidationException.html" title="class in org.apache.calcite.tools">ValidationException</a></span></div> |
| <div class="block">Validates a SQL statement.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>sqlNode</code> - Root node of the SQL parse tree.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Validated node</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="ValidationException.html" title="class in org.apache.calcite.tools">ValidationException</a></code> - if not valid</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="validateAndGetType(org.apache.calcite.sql.SqlNode)">validateAndGetType</a></h3> |
| <div class="memberSignature"><span class="returnType"><a href="../util/Pair.html" title="class in org.apache.calcite.util">Pair</a><<a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>,​<a href="../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>></span> <span class="memberName">validateAndGetType</span>​(<span class="arguments"><a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> sqlNode)</span> |
| throws <span class="exceptions"><a href="ValidationException.html" title="class in org.apache.calcite.tools">ValidationException</a></span></div> |
| <div class="block">Validates a SQL statement.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>sqlNode</code> - Root node of the SQL parse tree.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Validated node and its validated type.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="ValidationException.html" title="class in org.apache.calcite.tools">ValidationException</a></code> - if not valid</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="rel(org.apache.calcite.sql.SqlNode)">rel</a></h3> |
| <div class="memberSignature"><span class="returnType"><a href="../rel/RelRoot.html" title="class in org.apache.calcite.rel">RelRoot</a></span> <span class="memberName">rel</span>​(<span class="arguments"><a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> sql)</span> |
| throws <span class="exceptions"><a href="RelConversionException.html" title="class in org.apache.calcite.tools">RelConversionException</a></span></div> |
| <div class="block">Converts a SQL parse tree into a tree of relational expressions. |
| |
| <p>You must call <a href="#validate(org.apache.calcite.sql.SqlNode)"><code>validate(org.apache.calcite.sql.SqlNode)</code></a> first.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>sql</code> - The root node of the SQL parse tree.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The root node of the newly generated RelNode tree.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="RelConversionException.html" title="class in org.apache.calcite.tools">RelConversionException</a></code> - if the node |
| cannot be converted or has not been validated</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="convert(org.apache.calcite.sql.SqlNode)">convert</a></h3> |
| <div class="memberSignature"><span class="annotations"><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang" class="externalLink">@Deprecated</a> |
| </span><span class="returnType"><a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></span> <span class="memberName">convert</span>​(<span class="arguments"><a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a> sql)</span> |
| throws <span class="exceptions"><a href="RelConversionException.html" title="class in org.apache.calcite.tools">RelConversionException</a></span></div> |
| <div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span> |
| <div class="deprecationComment">Use <a href="#rel(org.apache.calcite.sql.SqlNode)"><code>rel(org.apache.calcite.sql.SqlNode)</code></a>.</div> |
| </div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="RelConversionException.html" title="class in org.apache.calcite.tools">RelConversionException</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="getTypeFactory()">getTypeFactory</a></h3> |
| <div class="memberSignature"><span class="returnType"><a href="../rel/type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a></span> <span class="memberName">getTypeFactory</span>()</div> |
| <div class="block">Returns the type factory.</div> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="transform(int,org.apache.calcite.plan.RelTraitSet,org.apache.calcite.rel.RelNode)">transform</a></h3> |
| <div class="memberSignature"><span class="returnType"><a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></span> <span class="memberName">transform</span>​(<span class="arguments">int ruleSetIndex, |
| <a href="../plan/RelTraitSet.html" title="class in org.apache.calcite.plan">RelTraitSet</a> requiredOutputTraits, |
| <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel)</span> |
| throws <span class="exceptions"><a href="RelConversionException.html" title="class in org.apache.calcite.tools">RelConversionException</a></span></div> |
| <div class="block">Converts one relational expression tree into another relational expression |
| based on a particular rule set and requires set of traits.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>ruleSetIndex</code> - The RuleSet to use for conversion purposes. Note that |
| this is zero-indexed and is based on the list and order |
| of RuleSets provided in the construction of this |
| Planner.</dd> |
| <dd><code>requiredOutputTraits</code> - The set of RelTraits required of the root node |
| at the termination of the planning cycle.</dd> |
| <dd><code>rel</code> - The root of the RelNode tree to convert.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The root of the new RelNode tree.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="RelConversionException.html" title="class in org.apache.calcite.tools">RelConversionException</a></code> - on conversion |
| error</dd> |
| </dl> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="reset()">reset</a></h3> |
| <div class="memberSignature"><span class="returnType">void</span> <span class="memberName">reset</span>()</div> |
| <div class="block">Resets this <code>Planner</code> to be used with a new query. This |
| should be called between each new query.</div> |
| </section> |
| </li> |
| <li class="blockList"> |
| <section class="detail"> |
| <h3><a id="close()">close</a></h3> |
| <div class="memberSignature"><span class="returnType">void</span> <span class="memberName">close</span>()</div> |
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| <div class="memberSignature"><span class="returnType"><a href="../plan/RelTraitSet.html" title="class in org.apache.calcite.plan">RelTraitSet</a></span> <span class="memberName">getEmptyTraitSet</span>()</div> |
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