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<div class="subTitle">org.apache.calcite.tools</div>
<h2 title="接口 Planner" class="title">接口 Planner</h2>
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<dl>
<dt>所有超级接口:</dt>
<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="java.lang中的类或接口">AutoCloseable</a></dd>
</dl>
<dl>
<dt>所有已知实现类:</dt>
<dd><a href="../../../../org/apache/calcite/prepare/PlannerImpl.html" title="org.apache.calcite.prepare中的类">PlannerImpl</a></dd>
</dl>
<hr>
<br>
<pre>public interface <span class="typeNameLabel">Planner</span>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="java.lang中的类或接口">AutoCloseable</a></pre>
<div class="block">A fa&ccedil;ade 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>
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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">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">实例方法</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">抽象方法</a></span><span class="tabEnd">&nbsp;</span></span><span id="t5" class="tableTab"><span><a href="javascript:show(16);">默认方法</a></span><span class="tabEnd">&nbsp;</span></span><span id="t6" class="tableTab"><span><a href="javascript:show(32);">已过时的方法</a></span><span class="tabEnd">&nbsp;</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>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/tools/Planner.html#close--">close</a></span>()</code>
<div class="block">Releases all internal resources utilized while this <code>Planner</code>
exists.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/tools/Planner.html#convert-org.apache.calcite.sql.SqlNode-">convert</a></span>(<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;sql)</code>
<div class="block"><span class="deprecatedLabel">已过时。</span>&nbsp;
<div class="block"><span class="deprecationComment">Use <a href="../../../../org/apache/calcite/tools/Planner.html#rel-org.apache.calcite.sql.SqlNode-"><code>rel(org.apache.calcite.sql.SqlNode)</code></a>.</span></div>
</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/plan/RelTraitSet.html" title="org.apache.calcite.plan中的类">RelTraitSet</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/tools/Planner.html#getEmptyTraitSet--">getEmptyTraitSet</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/rel/type/RelDataTypeFactory.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeFactory</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/tools/Planner.html#getTypeFactory--">getTypeFactory</a></span>()</code>
<div class="block">Returns the type factory.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/tools/Planner.html#parse-java.io.Reader-">parse</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/Reader.html?is-external=true" title="java.io中的类或接口">Reader</a>&nbsp;source)</code>
<div class="block">Parses and validates a SQL statement.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>default <a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/tools/Planner.html#parse-java.lang.String-">parse</a></span>(<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>&nbsp;sql)</code>
<div class="block">Parses and validates a SQL statement.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/rel/RelRoot.html" title="org.apache.calcite.rel中的类">RelRoot</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/tools/Planner.html#rel-org.apache.calcite.sql.SqlNode-">rel</a></span>(<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;sql)</code>
<div class="block">Converts a SQL parse tree into a tree of relational expressions.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/tools/Planner.html#reset--">reset</a></span>()</code>
<div class="block">Resets this <code>Planner</code> to be used with a new query.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/tools/Planner.html#transform-int-org.apache.calcite.plan.RelTraitSet-org.apache.calcite.rel.RelNode-">transform</a></span>(int&nbsp;ruleSetIndex,
<a href="../../../../org/apache/calcite/plan/RelTraitSet.html" title="org.apache.calcite.plan中的类">RelTraitSet</a>&nbsp;requiredOutputTraits,
<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel)</code>
<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 id="i9" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/tools/Planner.html#validate-org.apache.calcite.sql.SqlNode-">validate</a></span>(<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;sqlNode)</code>
<div class="block">Validates a SQL statement.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/util/Pair.html" title="org.apache.calcite.util中的类">Pair</a>&lt;<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>,<a href="../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/tools/Planner.html#validateAndGetType-org.apache.calcite.sql.SqlNode-">validateAndGetType</a></span>(<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;sqlNode)</code>
<div class="block">Validates a SQL statement.</div>
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<h3>方法详细资料</h3>
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<h4>parse</h4>
<pre>default&nbsp;<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;parse(<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>&nbsp;sql)
throws <a href="../../../../org/apache/calcite/sql/parser/SqlParseException.html" title="org.apache.calcite.sql.parser中的类">SqlParseException</a></pre>
<div class="block">Parses and validates a SQL statement.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>sql</code> - The SQL statement to parse.</dd>
<dt><span class="returnLabel">返回:</span></dt>
<dd>The root node of the SQL parse tree.</dd>
<dt><span class="throwsLabel">抛出:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/sql/parser/SqlParseException.html" title="org.apache.calcite.sql.parser中的类">SqlParseException</a></code> - on parse error</dd>
</dl>
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<h4>parse</h4>
<pre><a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;parse(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/Reader.html?is-external=true" title="java.io中的类或接口">Reader</a>&nbsp;source)
throws <a href="../../../../org/apache/calcite/sql/parser/SqlParseException.html" title="org.apache.calcite.sql.parser中的类">SqlParseException</a></pre>
<div class="block">Parses and validates a SQL statement.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>source</code> - A reader which will provide the SQL statement to parse.</dd>
<dt><span class="returnLabel">返回:</span></dt>
<dd>The root node of the SQL parse tree.</dd>
<dt><span class="throwsLabel">抛出:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/sql/parser/SqlParseException.html" title="org.apache.calcite.sql.parser中的类">SqlParseException</a></code> - on parse error</dd>
</dl>
</li>
</ul>
<a name="validate-org.apache.calcite.sql.SqlNode-">
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<h4>validate</h4>
<pre><a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;validate(<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;sqlNode)
throws <a href="../../../../org/apache/calcite/tools/ValidationException.html" title="org.apache.calcite.tools中的类">ValidationException</a></pre>
<div class="block">Validates a SQL statement.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>sqlNode</code> - Root node of the SQL parse tree.</dd>
<dt><span class="returnLabel">返回:</span></dt>
<dd>Validated node</dd>
<dt><span class="throwsLabel">抛出:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/tools/ValidationException.html" title="org.apache.calcite.tools中的类">ValidationException</a></code> - if not valid</dd>
</dl>
</li>
</ul>
<a name="validateAndGetType-org.apache.calcite.sql.SqlNode-">
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<h4>validateAndGetType</h4>
<pre><a href="../../../../org/apache/calcite/util/Pair.html" title="org.apache.calcite.util中的类">Pair</a>&lt;<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>,<a href="../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a>&gt;&nbsp;validateAndGetType(<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;sqlNode)
throws <a href="../../../../org/apache/calcite/tools/ValidationException.html" title="org.apache.calcite.tools中的类">ValidationException</a></pre>
<div class="block">Validates a SQL statement.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>sqlNode</code> - Root node of the SQL parse tree.</dd>
<dt><span class="returnLabel">返回:</span></dt>
<dd>Validated node and its validated type.</dd>
<dt><span class="throwsLabel">抛出:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/tools/ValidationException.html" title="org.apache.calcite.tools中的类">ValidationException</a></code> - if not valid</dd>
</dl>
</li>
</ul>
<a name="rel-org.apache.calcite.sql.SqlNode-">
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<h4>rel</h4>
<pre><a href="../../../../org/apache/calcite/rel/RelRoot.html" title="org.apache.calcite.rel中的类">RelRoot</a>&nbsp;rel(<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;sql)
throws <a href="../../../../org/apache/calcite/tools/RelConversionException.html" title="org.apache.calcite.tools中的类">RelConversionException</a></pre>
<div class="block">Converts a SQL parse tree into a tree of relational expressions.
<p>You must call <a href="../../../../org/apache/calcite/tools/Planner.html#validate-org.apache.calcite.sql.SqlNode-"><code>validate(org.apache.calcite.sql.SqlNode)</code></a> first.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>sql</code> - The root node of the SQL parse tree.</dd>
<dt><span class="returnLabel">返回:</span></dt>
<dd>The root node of the newly generated RelNode tree.</dd>
<dt><span class="throwsLabel">抛出:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/tools/RelConversionException.html" title="org.apache.calcite.tools中的类">RelConversionException</a></code> - if the node
cannot be converted or has not been validated</dd>
</dl>
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</ul>
<a name="convert-org.apache.calcite.sql.SqlNode-">
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<h4>convert</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="java.lang中的类或接口">@Deprecated</a>
<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;convert(<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;sql)
throws <a href="../../../../org/apache/calcite/tools/RelConversionException.html" title="org.apache.calcite.tools中的类">RelConversionException</a></pre>
<div class="block"><span class="deprecatedLabel">已过时。</span>&nbsp;<span class="deprecationComment">Use <a href="../../../../org/apache/calcite/tools/Planner.html#rel-org.apache.calcite.sql.SqlNode-"><code>rel(org.apache.calcite.sql.SqlNode)</code></a>.</span></div>
<dl>
<dt><span class="throwsLabel">抛出:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/tools/RelConversionException.html" title="org.apache.calcite.tools中的类">RelConversionException</a></code></dd>
</dl>
</li>
</ul>
<a name="getTypeFactory--">
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<h4>getTypeFactory</h4>
<pre><a href="../../../../org/apache/calcite/rel/type/RelDataTypeFactory.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeFactory</a>&nbsp;getTypeFactory()</pre>
<div class="block">Returns the type factory.</div>
</li>
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<a name="transform-int-org.apache.calcite.plan.RelTraitSet-org.apache.calcite.rel.RelNode-">
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<h4>transform</h4>
<pre><a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;transform(int&nbsp;ruleSetIndex,
<a href="../../../../org/apache/calcite/plan/RelTraitSet.html" title="org.apache.calcite.plan中的类">RelTraitSet</a>&nbsp;requiredOutputTraits,
<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel)
throws <a href="../../../../org/apache/calcite/tools/RelConversionException.html" title="org.apache.calcite.tools中的类">RelConversionException</a></pre>
<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">参数:</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">返回:</span></dt>
<dd>The root of the new RelNode tree.</dd>
<dt><span class="throwsLabel">抛出:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/tools/RelConversionException.html" title="org.apache.calcite.tools中的类">RelConversionException</a></code> - on conversion
error</dd>
</dl>
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<h4>reset</h4>
<pre>void&nbsp;reset()</pre>
<div class="block">Resets this <code>Planner</code> to be used with a new query. This
should be called between each new query.</div>
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<a name="close--">
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<h4>close</h4>
<pre>void&nbsp;close()</pre>
<div class="block">Releases all internal resources utilized while this <code>Planner</code>
exists. Once called, this Planner object is no longer valid.</div>
<dl>
<dt><span class="overrideSpecifyLabel">指定者:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true#close--" title="java.lang中的类或接口">close</a></code>&nbsp;在接口中&nbsp;<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="java.lang中的类或接口">AutoCloseable</a></code></dd>
</dl>
</li>
</ul>
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<h4>getEmptyTraitSet</h4>
<pre><a href="../../../../org/apache/calcite/plan/RelTraitSet.html" title="org.apache.calcite.plan中的类">RelTraitSet</a>&nbsp;getEmptyTraitSet()</pre>
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