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 <h1 title="Uses of Package org.apache.calcite.plan" class="title">Uses of Package<br>org.apache.calcite.plan</h1>
 </div>
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 <li class="blockList">
 <table class="useSummary">
 <caption><span>Packages that use <a href="package-summary.html">org.apache.calcite.plan</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Package</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.cassandra">org.apache.calcite.adapter.cassandra</a></th>
 <td class="colLast">
 <div class="block">Cassandra query provider.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.csv">org.apache.calcite.adapter.csv</a></th>
 <td class="colLast">
 <div class="block">Calcite query provider that reads from CSV (comma-separated value) files.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.druid">org.apache.calcite.adapter.druid</a></th>
 <td class="colLast">
 <div class="block">Query provider based on a Druid database.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.elasticsearch">org.apache.calcite.adapter.elasticsearch</a></th>
 <td class="colLast">
 <div class="block">Query provider based on an Elasticsearch2 DB.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.enumerable">org.apache.calcite.adapter.enumerable</a></th>
 <td class="colLast">
 <div class="block">Query optimizer rules for Java calling convention.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.file">org.apache.calcite.adapter.file</a></th>
 <td class="colLast">
 <div class="block">Calcite query provider that reads from web tables (HTML).</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.geode.rel">org.apache.calcite.adapter.geode.rel</a></th>
 <td class="colLast">
 <div class="block">Query provider based on Apache Geode (Gemfire) In Memory Data Grid</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.jdbc">org.apache.calcite.adapter.jdbc</a></th>
 <td class="colLast">
 <div class="block">Query provider based on a JDBC data source.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.mongodb">org.apache.calcite.adapter.mongodb</a></th>
 <td class="colLast">
 <div class="block">Query provider based on a MongoDB database.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.pig">org.apache.calcite.adapter.pig</a></th>
 <td class="colLast">
 <div class="block">Pig query provider.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.spark">org.apache.calcite.adapter.spark</a></th>
 <td class="colLast">
 <div class="block">Adapter based on the Apache Spark data management system.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.splunk">org.apache.calcite.adapter.splunk</a></th>
 <td class="colLast">
 <div class="block">Splunk query provider.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.interpreter">org.apache.calcite.interpreter</a></th>
 <td class="colLast">
 <div class="block">Provides an implementation of relational expressions using an interpreter.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.jdbc">org.apache.calcite.jdbc</a></th>
 <td class="colLast">
 <div class="block">JDBC driver for Calcite.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.materialize">org.apache.calcite.materialize</a></th>
 <td class="colLast">
 <div class="block">Management of materialized query results.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.plan">org.apache.calcite.plan</a></th>
 <td class="colLast">
 <div class="block">Defines interfaces for constructing rule-based optimizers of
  relational expressions.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.plan.hep">org.apache.calcite.plan.hep</a></th>
 <td class="colLast">
 <div class="block">Provides a heuristic planner implementation for the interfaces in
  <a href="package-summary.html"><code>org.apache.calcite.plan</code></a>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.plan.volcano">org.apache.calcite.plan.volcano</a></th>
 <td class="colLast">
 <div class="block">Optimizes relational expressions.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.prepare">org.apache.calcite.prepare</a></th>
 <td class="colLast">
 <div class="block">Preparation of queries (parsing, planning and implementation).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rel">org.apache.calcite.rel</a></th>
 <td class="colLast">
 <div class="block">Defines relational expressions.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rel.convert">org.apache.calcite.rel.convert</a></th>
 <td class="colLast">
 <div class="block">Defines relational expressions and rules for converting between calling
  conventions.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rel.core">org.apache.calcite.rel.core</a></th>
 <td class="colLast">
 <div class="block">Defines core relational expressions.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rel.externalize">org.apache.calcite.rel.externalize</a></th>
 <td class="colLast">
 <div class="block">Facilities to externalize <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel"><code>RelNode</code></a>s to and from
  XML and JSON format.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rel.logical">org.apache.calcite.rel.logical</a></th>
 <td class="colLast">
 <div class="block">Defines logical relational expressions.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rel.metadata">org.apache.calcite.rel.metadata</a></th>
 <td class="colLast">
 <div class="block">Defines metadata interfaces and utilities for relational
  expressions.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rel.mutable">org.apache.calcite.rel.mutable</a></th>
 <td class="colLast">
 <div class="block">Defines mutable relational expressions.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rel.rules">org.apache.calcite.rel.rules</a></th>
 <td class="colLast">
 <div class="block">Provides a core set of planner rules.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rel.stream">org.apache.calcite.rel.stream</a></th>
 <td class="colLast">
 <div class="block">Defines relational expressions for streaming.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rex">org.apache.calcite.rex</a></th>
 <td class="colLast">
 <div class="block">Provides a language for representing row-expressions.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.schema">org.apache.calcite.schema</a></th>
 <td class="colLast">
 <div class="block">Schema SPI.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.schema.impl">org.apache.calcite.schema.impl</a></th>
 <td class="colLast">
 <div class="block">Utilities to help implement Calcite's SPIs.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.sql">org.apache.calcite.sql</a></th>
 <td class="colLast">
 <div class="block">Provides a SQL parser and object model.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.sql.ddl">org.apache.calcite.sql.ddl</a></th>
 <td class="colLast">
 <div class="block">Parse tree for SQL DDL statements.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.sql.fun">org.apache.calcite.sql.fun</a></th>
 <td class="colLast">
 <div class="block">Defines the set of standard SQL row-level functions and
  operators.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.sql.validate">org.apache.calcite.sql.validate</a></th>
 <td class="colLast">
 <div class="block">SQL validation.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.sql2rel">org.apache.calcite.sql2rel</a></th>
 <td class="colLast">
 <div class="block">Translates a SQL parse tree to relational expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.statistic">org.apache.calcite.statistic</a></th>
 <td class="colLast">
 <div class="block">Implementations of statistics providers.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.tools">org.apache.calcite.tools</a></th>
 <td class="colLast">
 <div class="block">Provides utility classes.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.adapter.cassandra">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.plan</a> used by <a href="../adapter/cassandra/package-summary.html">org.apache.calcite.adapter.cassandra</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Convention.html#org.apache.calcite.adapter.cassandra">Convention</a></th>
 <td class="colLast">
 <div class="block">Calling convention trait.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCluster.html#org.apache.calcite.adapter.cassandra">RelOptCluster</a></th>
 <td class="colLast">
 <div class="block">An environment for related relational expressions during the
  optimization of a query.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCost.html#org.apache.calcite.adapter.cassandra">RelOptCost</a></th>
 <td class="colLast">
 <div class="block">RelOptCost defines an interface for optimizer cost in terms of number of rows
  processed, CPU cost, and I/O cost.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptNode.html#org.apache.calcite.adapter.cassandra">RelOptNode</a></th>
 <td class="colLast">
 <div class="block">Node in a planner.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptPlanner.html#org.apache.calcite.adapter.cassandra">RelOptPlanner</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptPlanner</code> is a query optimizer: it transforms a relational
  expression into a semantically equivalent relational expression, according to
  a given set of rules and a cost model.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRule.html#org.apache.calcite.adapter.cassandra">RelOptRule</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptRule</code> transforms an expression into another.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRuleCall.html#org.apache.calcite.adapter.cassandra">RelOptRuleCall</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptRuleCall</code> is an invocation of a <a href="RelOptRule.html" title="class in org.apache.calcite.plan"><code>RelOptRule</code></a> with a
  set of <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel"><code>relational expression</code></a>s as arguments.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRuleOperand.html#org.apache.calcite.adapter.cassandra">RelOptRuleOperand</a></th>
 <td class="colLast">
 <div class="block">Operand that determines whether a <a href="RelOptRule.html" title="class in org.apache.calcite.plan"><code>RelOptRule</code></a>
  can be applied to a particular expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.html#org.apache.calcite.adapter.cassandra">RelOptTable</a></th>
 <td class="colLast">
 <div class="block">Represents a relational dataset in a <a href="RelOptSchema.html" title="interface in org.apache.calcite.plan"><code>RelOptSchema</code></a>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.ToRelContext.html#org.apache.calcite.adapter.cassandra">RelOptTable.ToRelContext</a></th>
 <td class="colLast">
 <div class="block">Contains the context needed to convert a a table into a relational
  expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTraitSet.html#org.apache.calcite.adapter.cassandra">RelTraitSet</a></th>
 <td class="colLast">
 <div class="block">RelTraitSet represents an ordered set of <a href="RelTrait.html" title="interface in org.apache.calcite.plan"><code>RelTrait</code></a>s.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.adapter.csv">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.plan</a> used by <a href="../adapter/csv/package-summary.html">org.apache.calcite.adapter.csv</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCluster.html#org.apache.calcite.adapter.csv">RelOptCluster</a></th>
 <td class="colLast">
 <div class="block">An environment for related relational expressions during the
  optimization of a query.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCost.html#org.apache.calcite.adapter.csv">RelOptCost</a></th>
 <td class="colLast">
 <div class="block">RelOptCost defines an interface for optimizer cost in terms of number of rows
  processed, CPU cost, and I/O cost.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptNode.html#org.apache.calcite.adapter.csv">RelOptNode</a></th>
 <td class="colLast">
 <div class="block">Node in a planner.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptPlanner.html#org.apache.calcite.adapter.csv">RelOptPlanner</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptPlanner</code> is a query optimizer: it transforms a relational
  expression into a semantically equivalent relational expression, according to
  a given set of rules and a cost model.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRule.html#org.apache.calcite.adapter.csv">RelOptRule</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptRule</code> transforms an expression into another.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRuleCall.html#org.apache.calcite.adapter.csv">RelOptRuleCall</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptRuleCall</code> is an invocation of a <a href="RelOptRule.html" title="class in org.apache.calcite.plan"><code>RelOptRule</code></a> with a
  set of <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel"><code>relational expression</code></a>s as arguments.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.html#org.apache.calcite.adapter.csv">RelOptTable</a></th>
 <td class="colLast">
 <div class="block">Represents a relational dataset in a <a href="RelOptSchema.html" title="interface in org.apache.calcite.plan"><code>RelOptSchema</code></a>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.ToRelContext.html#org.apache.calcite.adapter.csv">RelOptTable.ToRelContext</a></th>
 <td class="colLast">
 <div class="block">Contains the context needed to convert a a table into a relational
  expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTraitSet.html#org.apache.calcite.adapter.csv">RelTraitSet</a></th>
 <td class="colLast">
 <div class="block">RelTraitSet represents an ordered set of <a href="RelTrait.html" title="interface in org.apache.calcite.plan"><code>RelTrait</code></a>s.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.adapter.druid">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.plan</a> used by <a href="../adapter/druid/package-summary.html">org.apache.calcite.adapter.druid</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCluster.html#org.apache.calcite.adapter.druid">RelOptCluster</a></th>
 <td class="colLast">
 <div class="block">An environment for related relational expressions during the
  optimization of a query.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCost.html#org.apache.calcite.adapter.druid">RelOptCost</a></th>
 <td class="colLast">
 <div class="block">RelOptCost defines an interface for optimizer cost in terms of number of rows
  processed, CPU cost, and I/O cost.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptNode.html#org.apache.calcite.adapter.druid">RelOptNode</a></th>
 <td class="colLast">
 <div class="block">Node in a planner.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptPlanner.html#org.apache.calcite.adapter.druid">RelOptPlanner</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptPlanner</code> is a query optimizer: it transforms a relational
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 <th class="colFirst" scope="col">Class</th>
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 <th class="colFirst" scope="row"><a href="class-use/Convention.html#org.apache.calcite.adapter.elasticsearch">Convention</a></th>
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 <th class="colFirst" scope="col">Class</th>
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 <th class="colFirst" scope="row"><a href="class-use/Convention.html#org.apache.calcite.adapter.enumerable">Convention</a></th>
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 <th class="colFirst" scope="col">Class</th>
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 <th class="colFirst" scope="row"><a href="class-use/RelOptCluster.html#org.apache.calcite.adapter.file">RelOptCluster</a></th>
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 <tr>
 <th class="colFirst" scope="col">Class</th>
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 <th class="colFirst" scope="row"><a href="class-use/RelTraitSet.html#org.apache.calcite.adapter.mongodb">RelTraitSet</a></th>
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 <th class="colFirst" scope="col">Class</th>
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 <th class="colFirst" scope="row"><a href="class-use/Context.html#org.apache.calcite.adapter.pig">Context</a></th>
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 <th class="colFirst" scope="row"><a href="class-use/RelOptCluster.html#org.apache.calcite.adapter.pig">RelOptCluster</a></th>
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 <th class="colFirst" scope="row"><a href="class-use/RelOptPlanner.html#org.apache.calcite.adapter.pig">RelOptPlanner</a></th>
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 <th class="colFirst" scope="row"><a href="class-use/RelOptRule.html#org.apache.calcite.adapter.pig">RelOptRule</a></th>
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 <th class="colFirst" scope="row"><a href="class-use/RelOptPlanner.html#org.apache.calcite.adapter.spark">RelOptPlanner</a></th>
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 <th class="colFirst" scope="col">Class</th>
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 <th class="colFirst" scope="col">Class</th>
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 <th class="colFirst" scope="row"><a href="class-use/Convention.html#org.apache.calcite.interpreter">Convention</a></th>
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 <th class="colFirst" scope="col">Class</th>
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 <th class="colFirst" scope="row"><a href="class-use/RelOptPlanner.html#org.apache.calcite.jdbc">RelOptPlanner</a></th>
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 <th class="colFirst" scope="row"><a href="class-use/Context.html#org.apache.calcite.plan">Context</a></th>
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 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptListener.RelEquivalenceEvent.html#org.apache.calcite.plan">RelOptListener.RelEquivalenceEvent</a></th>
 <td class="colLast">
 <div class="block">Event indicating that a relational expression has been found to
  be equivalent to an equivalence class.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptListener.RelEvent.html#org.apache.calcite.plan">RelOptListener.RelEvent</a></th>
 <td class="colLast">
 <div class="block">Event class for abstract event dealing with a relational expression.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptListener.RuleAttemptedEvent.html#org.apache.calcite.plan">RelOptListener.RuleAttemptedEvent</a></th>
 <td class="colLast">
 <div class="block">Event indicating that a planner rule has been attempted.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptListener.RuleEvent.html#org.apache.calcite.plan">RelOptListener.RuleEvent</a></th>
 <td class="colLast">
 <div class="block">Event indicating that a planner rule has fired.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptListener.RuleProductionEvent.html#org.apache.calcite.plan">RelOptListener.RuleProductionEvent</a></th>
 <td class="colLast">
 <div class="block">Event indicating that a planner rule has produced a result.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptMaterialization.html#org.apache.calcite.plan">RelOptMaterialization</a></th>
 <td class="colLast">
 <div class="block">Records that a particular query is materialized by a particular table.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptMaterialization.ProjectFilterTable.html#org.apache.calcite.plan">RelOptMaterialization.ProjectFilterTable</a></th>
 <td class="colLast">
 <div class="block">A table scan and optional project mapping and filter condition.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptNode.html#org.apache.calcite.plan">RelOptNode</a></th>
 <td class="colLast">
 <div class="block">Node in a planner.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptPlanner.html#org.apache.calcite.plan">RelOptPlanner</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptPlanner</code> is a query optimizer: it transforms a relational
  expression into a semantically equivalent relational expression, according to
  a given set of rules and a cost model.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptPredicateList.html#org.apache.calcite.plan">RelOptPredicateList</a></th>
 <td class="colLast">
 <div class="block">Predicates that are known to hold in the output of a particular relational
  expression.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptQuery.html#org.apache.calcite.plan">RelOptQuery</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptQuery</code> represents a set of
  <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel"><code>relational expressions</code></a> which derive from the same
  <code>select</code> statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRule.html#org.apache.calcite.plan">RelOptRule</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptRule</code> transforms an expression into another.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRule.ConverterRelOptRuleOperand.html#org.apache.calcite.plan">RelOptRule.ConverterRelOptRuleOperand</a></th>
 <td class="colLast">
 <div class="block">Operand to an instance of the converter rule.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRuleCall.html#org.apache.calcite.plan">RelOptRuleCall</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptRuleCall</code> is an invocation of a <a href="RelOptRule.html" title="class in org.apache.calcite.plan"><code>RelOptRule</code></a> with a
  set of <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel"><code>relational expression</code></a>s as arguments.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRuleOperand.html#org.apache.calcite.plan">RelOptRuleOperand</a></th>
 <td class="colLast">
 <div class="block">Operand that determines whether a <a href="RelOptRule.html" title="class in org.apache.calcite.plan"><code>RelOptRule</code></a>
  can be applied to a particular expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRuleOperandChildPolicy.html#org.apache.calcite.plan">RelOptRuleOperandChildPolicy</a></th>
 <td class="colLast">
 <div class="block">Policy by which operands will be matched by relational expressions with
  any number of children.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRuleOperandChildren.html#org.apache.calcite.plan">RelOptRuleOperandChildren</a></th>
 <td class="colLast">
 <div class="block">Children of a <a href="RelOptRuleOperand.html" title="class in org.apache.calcite.plan"><code>RelOptRuleOperand</code></a> and the
  policy for matching them.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptSchema.html#org.apache.calcite.plan">RelOptSchema</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptSchema</code> is a set of <a href="RelOptTable.html" title="interface in org.apache.calcite.plan"><code>RelOptTable</code></a> objects.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.html#org.apache.calcite.plan">RelOptTable</a></th>
 <td class="colLast">
 <div class="block">Represents a relational dataset in a <a href="RelOptSchema.html" title="interface in org.apache.calcite.plan"><code>RelOptSchema</code></a>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.ToRelContext.html#org.apache.calcite.plan">RelOptTable.ToRelContext</a></th>
 <td class="colLast">
 <div class="block">Contains the context needed to convert a a table into a relational
  expression.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.ViewExpander.html#org.apache.calcite.plan">RelOptTable.ViewExpander</a></th>
 <td class="colLast">
 <div class="block">Can expand a view into relational expressions.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptUtil.Exists.html#org.apache.calcite.plan">RelOptUtil.Exists</a></th>
 <td class="colLast">
 <div class="block">Result of calling
  <a href="RelOptUtil.html#createExistsPlan(org.apache.calcite.plan.RelOptCluster,org.apache.calcite.rel.RelNode,java.util.List,org.apache.calcite.rex.RexLiteral,java.lang.String)"><code>RelOptUtil.createExistsPlan(org.apache.calcite.plan.RelOptCluster, org.apache.calcite.rel.RelNode, java.util.List&lt;org.apache.calcite.rex.RexNode&gt;, org.apache.calcite.rex.RexLiteral, java.lang.String)</code></a></div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptUtil.InputFinder.html#org.apache.calcite.plan">RelOptUtil.InputFinder</a></th>
 <td class="colLast">
 <div class="block">Visitor which builds a bitmap of the inputs used by an expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptUtil.Logic.html#org.apache.calcite.plan">RelOptUtil.Logic</a></th>
 <td class="colLast">
 <div class="block">Policies for handling two- and three-valued boolean logic.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptUtil.Side.html#org.apache.calcite.plan">RelOptUtil.Side</a></th>
 <td class="colLast">
 <div class="block">Categorizes whether a bit set contains bits left and right of a
  line.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptUtil.SubQueryType.html#org.apache.calcite.plan">RelOptUtil.SubQueryType</a></th>
 <td class="colLast">
 <div class="block">What kind of sub-query.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptUtil.VariableUsedVisitor.html#org.apache.calcite.plan">RelOptUtil.VariableUsedVisitor</a></th>
 <td class="colLast">
 <div class="block">Visitor that finds all variables used in an expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTrait.html#org.apache.calcite.plan">RelTrait</a></th>
 <td class="colLast">
 <div class="block">RelTrait represents the manifestation of a relational expression trait within
  a trait definition.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTraitDef.html#org.apache.calcite.plan">RelTraitDef</a></th>
 <td class="colLast">
 <div class="block">RelTraitDef represents a class of <a href="RelTrait.html" title="interface in org.apache.calcite.plan"><code>RelTrait</code></a>s.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTraitSet.html#org.apache.calcite.plan">RelTraitSet</a></th>
 <td class="colLast">
 <div class="block">RelTraitSet represents an ordered set of <a href="RelTrait.html" title="interface in org.apache.calcite.plan"><code>RelTrait</code></a>s.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTraitSet.Cache.html#org.apache.calcite.plan">RelTraitSet.Cache</a></th>
 <td class="colLast">
 <div class="block">Cache of trait sets.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RexImplicationChecker.InputRefUsage.html#org.apache.calcite.plan">RexImplicationChecker.InputRefUsage</a></th>
 <td class="colLast">
 <div class="block">Usage of a <a href="../rex/RexInputRef.html" title="class in org.apache.calcite.rex"><code>RexInputRef</code></a> in an expression.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RexImplicationChecker.InputUsageFinder.html#org.apache.calcite.plan">RexImplicationChecker.InputUsageFinder</a></th>
 <td class="colLast">
 <div class="block">Visitor that builds a usage map of inputs used by an expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Strong.html#org.apache.calcite.plan">Strong</a></th>
 <td class="colLast">
 <div class="block">Utilities for strong predicates.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Strong.Policy.html#org.apache.calcite.plan">Strong.Policy</a></th>
 <td class="colLast">
 <div class="block">How whether an operator's operands are null affects whether a call to
  that operator evaluates to null.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/SubstitutionVisitor.html#org.apache.calcite.plan">SubstitutionVisitor</a></th>
 <td class="colLast">
 <div class="block">Substitutes part of a tree of relational expressions with another tree.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/SubstitutionVisitor.AbstractUnifyRule.html#org.apache.calcite.plan">SubstitutionVisitor.AbstractUnifyRule</a></th>
 <td class="colLast">
 <div class="block">Abstract base class for implementing <a href="SubstitutionVisitor.UnifyRule.html" title="class in org.apache.calcite.plan"><code>SubstitutionVisitor.UnifyRule</code></a>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/SubstitutionVisitor.AggregateOnProjectToAggregateUnifyRule.html#org.apache.calcite.plan">SubstitutionVisitor.AggregateOnProjectToAggregateUnifyRule</a></th>
 <td class="colLast">
 <div class="block">Implementation of <a href="SubstitutionVisitor.UnifyRule.html" title="class in org.apache.calcite.plan"><code>SubstitutionVisitor.UnifyRule</code></a> that matches a
  <a href="../rel/mutable/MutableAggregate.html" title="class in org.apache.calcite.rel.mutable"><code>MutableAggregate</code></a> on
  a <a href="../rel/mutable/MutableProject.html" title="class in org.apache.calcite.rel.mutable"><code>MutableProject</code></a> query to an <a href="../rel/mutable/MutableAggregate.html" title="class in org.apache.calcite.rel.mutable"><code>MutableAggregate</code></a> target.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/SubstitutionVisitor.AggregateToAggregateUnifyRule.html#org.apache.calcite.plan">SubstitutionVisitor.AggregateToAggregateUnifyRule</a></th>
 <td class="colLast">
 <div class="block">Implementation of <a href="SubstitutionVisitor.UnifyRule.html" title="class in org.apache.calcite.plan"><code>SubstitutionVisitor.UnifyRule</code></a> that matches a
  <a href="../rel/logical/LogicalAggregate.html" title="class in org.apache.calcite.rel.logical"><code>LogicalAggregate</code></a> to a
  <a href="../rel/logical/LogicalAggregate.html" title="class in org.apache.calcite.rel.logical"><code>LogicalAggregate</code></a>, provided
  that they have the same child.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/SubstitutionVisitor.FilterOnProjectRule.html#org.apache.calcite.plan">SubstitutionVisitor.FilterOnProjectRule</a></th>
 <td class="colLast">
 <div class="block">Rule that converts a <a href="../rel/logical/LogicalFilter.html" title="class in org.apache.calcite.rel.logical"><code>LogicalFilter</code></a>
  on top of a <a href="../rel/logical/LogicalProject.html" title="class in org.apache.calcite.rel.logical"><code>LogicalProject</code></a> into a
  trivial filter (on a boolean column).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/SubstitutionVisitor.FilterToFilterUnifyRule.html#org.apache.calcite.plan">SubstitutionVisitor.FilterToFilterUnifyRule</a></th>
 <td class="colLast">
 <div class="block">Implementation of <a href="SubstitutionVisitor.UnifyRule.html" title="class in org.apache.calcite.plan"><code>SubstitutionVisitor.UnifyRule</code></a> that matches a
  <a href="../rel/mutable/MutableFilter.html" title="class in org.apache.calcite.rel.mutable"><code>MutableFilter</code></a>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/SubstitutionVisitor.FilterToProjectUnifyRule.html#org.apache.calcite.plan">SubstitutionVisitor.FilterToProjectUnifyRule</a></th>
 <td class="colLast">
 <div class="block">Implementation of <a href="SubstitutionVisitor.UnifyRule.html" title="class in org.apache.calcite.plan"><code>SubstitutionVisitor.UnifyRule</code></a> that matches a <a href="../rel/mutable/MutableFilter.html" title="class in org.apache.calcite.rel.mutable"><code>MutableFilter</code></a>
  to a <a href="../rel/mutable/MutableProject.html" title="class in org.apache.calcite.rel.mutable"><code>MutableProject</code></a>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/SubstitutionVisitor.MatchFailed.html#org.apache.calcite.plan">SubstitutionVisitor.MatchFailed</a></th>
 <td class="colLast">
 <div class="block">Exception thrown to exit a matcher.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/SubstitutionVisitor.Operand.html#org.apache.calcite.plan">SubstitutionVisitor.Operand</a></th>
 <td class="colLast">
 <div class="block">Operand to a <a href="SubstitutionVisitor.UnifyRule.html" title="class in org.apache.calcite.plan"><code>SubstitutionVisitor.UnifyRule</code></a>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/SubstitutionVisitor.ProjectToFilterUnifyRule.html#org.apache.calcite.plan">SubstitutionVisitor.ProjectToFilterUnifyRule</a></th>
 <td class="colLast">
 <div class="block">Implementation of <a href="SubstitutionVisitor.UnifyRule.html" title="class in org.apache.calcite.plan"><code>SubstitutionVisitor.UnifyRule</code></a> that matches a <a href="../rel/mutable/MutableProject.html" title="class in org.apache.calcite.rel.mutable"><code>MutableProject</code></a>
  to a <a href="../rel/mutable/MutableFilter.html" title="class in org.apache.calcite.rel.mutable"><code>MutableFilter</code></a>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/SubstitutionVisitor.ProjectToProjectUnifyRule.html#org.apache.calcite.plan">SubstitutionVisitor.ProjectToProjectUnifyRule</a></th>
 <td class="colLast">
 <div class="block">Implementation of <a href="SubstitutionVisitor.UnifyRule.html" title="class in org.apache.calcite.plan"><code>SubstitutionVisitor.UnifyRule</code></a> that matches
  <a href="../rel/logical/LogicalProject.html" title="class in org.apache.calcite.rel.logical"><code>LogicalProject</code></a>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/SubstitutionVisitor.Replacement.html#org.apache.calcite.plan">SubstitutionVisitor.Replacement</a></th>
 <td class="colLast">
 <div class="block">Represents a replacement action: before &rarr; after.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/SubstitutionVisitor.ScanToProjectUnifyRule.html#org.apache.calcite.plan">SubstitutionVisitor.ScanToProjectUnifyRule</a></th>
 <td class="colLast">
 <div class="block">Implementation of <a href="SubstitutionVisitor.UnifyRule.html" title="class in org.apache.calcite.plan"><code>SubstitutionVisitor.UnifyRule</code></a> that matches
  <a href="../rel/logical/LogicalTableScan.html" title="class in org.apache.calcite.rel.logical"><code>LogicalTableScan</code></a>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/SubstitutionVisitor.TrivialRule.html#org.apache.calcite.plan">SubstitutionVisitor.TrivialRule</a></th>
 <td class="colLast">
 <div class="block">Implementation of <a href="SubstitutionVisitor.UnifyRule.html" title="class in org.apache.calcite.plan"><code>SubstitutionVisitor.UnifyRule</code></a> that matches if the query is already
  equal to the target.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/SubstitutionVisitor.UnifyResult.html#org.apache.calcite.plan">SubstitutionVisitor.UnifyResult</a></th>
 <td class="colLast">
 <div class="block">Result of an application of a <a href="SubstitutionVisitor.UnifyRule.html" title="class in org.apache.calcite.plan"><code>SubstitutionVisitor.UnifyRule</code></a> indicating that the
  rule successfully matched <code>query</code> against <code>target</code> and
  generated a <code>result</code> that is equivalent to <code>query</code> and
  contains <code>target</code>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/SubstitutionVisitor.UnifyRule.html#org.apache.calcite.plan">SubstitutionVisitor.UnifyRule</a></th>
 <td class="colLast">
 <div class="block">Rule that attempts to match a query relational expression
  against a target relational expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/SubstitutionVisitor.UnifyRuleCall.html#org.apache.calcite.plan">SubstitutionVisitor.UnifyRuleCall</a></th>
 <td class="colLast">
 <div class="block">Arguments to an application of a <a href="SubstitutionVisitor.UnifyRule.html" title="class in org.apache.calcite.plan"><code>SubstitutionVisitor.UnifyRule</code></a>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableAccessMap.Mode.html#org.apache.calcite.plan">TableAccessMap.Mode</a></th>
 <td class="colLast">
 <div class="block">Access mode.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.plan.hep">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.plan</a> used by <a href="hep/package-summary.html">org.apache.calcite.plan.hep</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/AbstractRelOptPlanner.html#org.apache.calcite.plan.hep">AbstractRelOptPlanner</a></th>
 <td class="colLast">
 <div class="block">Abstract base for implementations of the <a href="RelOptPlanner.html" title="interface in org.apache.calcite.plan"><code>RelOptPlanner</code></a> interface.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Context.html#org.apache.calcite.plan.hep">Context</a></th>
 <td class="colLast">
 <div class="block">Provides library users a way to store data within the planner session and
  access it within rules.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCost.html#org.apache.calcite.plan.hep">RelOptCost</a></th>
 <td class="colLast">
 <div class="block">RelOptCost defines an interface for optimizer cost in terms of number of rows
  processed, CPU cost, and I/O cost.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCostFactory.html#org.apache.calcite.plan.hep">RelOptCostFactory</a></th>
 <td class="colLast">
 <div class="block">Cost model for query planning.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptMaterialization.html#org.apache.calcite.plan.hep">RelOptMaterialization</a></th>
 <td class="colLast">
 <div class="block">Records that a particular query is materialized by a particular table.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptNode.html#org.apache.calcite.plan.hep">RelOptNode</a></th>
 <td class="colLast">
 <div class="block">Node in a planner.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptPlanner.html#org.apache.calcite.plan.hep">RelOptPlanner</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptPlanner</code> is a query optimizer: it transforms a relational
  expression into a semantically equivalent relational expression, according to
  a given set of rules and a cost model.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRule.html#org.apache.calcite.plan.hep">RelOptRule</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptRule</code> transforms an expression into another.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRuleCall.html#org.apache.calcite.plan.hep">RelOptRuleCall</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptRuleCall</code> is an invocation of a <a href="RelOptRule.html" title="class in org.apache.calcite.plan"><code>RelOptRule</code></a> with a
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 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRuleOperand.html#org.apache.calcite.plan.hep">RelOptRuleOperand</a></th>
 <td class="colLast">
 <div class="block">Operand that determines whether a <a href="RelOptRule.html" title="class in org.apache.calcite.plan"><code>RelOptRule</code></a>
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 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTrait.html#org.apache.calcite.plan.hep">RelTrait</a></th>
 <td class="colLast">
 <div class="block">RelTrait represents the manifestation of a relational expression trait within
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 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTraitSet.html#org.apache.calcite.plan.hep">RelTraitSet</a></th>
 <td class="colLast">
 <div class="block">RelTraitSet represents an ordered set of <a href="RelTrait.html" title="interface in org.apache.calcite.plan"><code>RelTrait</code></a>s.</div>
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 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.plan</a> used by <a href="volcano/package-summary.html">org.apache.calcite.plan.volcano</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/AbstractRelOptPlanner.html#org.apache.calcite.plan.volcano">AbstractRelOptPlanner</a></th>
 <td class="colLast">
 <div class="block">Abstract base for implementations of the <a href="RelOptPlanner.html" title="interface in org.apache.calcite.plan"><code>RelOptPlanner</code></a> interface.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Context.html#org.apache.calcite.plan.volcano">Context</a></th>
 <td class="colLast">
 <div class="block">Provides library users a way to store data within the planner session and
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 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCluster.html#org.apache.calcite.plan.volcano">RelOptCluster</a></th>
 <td class="colLast">
 <div class="block">An environment for related relational expressions during the
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 </td>
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 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCost.html#org.apache.calcite.plan.volcano">RelOptCost</a></th>
 <td class="colLast">
 <div class="block">RelOptCost defines an interface for optimizer cost in terms of number of rows
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 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCostFactory.html#org.apache.calcite.plan.volcano">RelOptCostFactory</a></th>
 <td class="colLast">
 <div class="block">Cost model for query planning.</div>
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 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptLattice.html#org.apache.calcite.plan.volcano">RelOptLattice</a></th>
 <td class="colLast">
 <div class="block">Use of a lattice by the query optimizer.</div>
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 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptListener.html#org.apache.calcite.plan.volcano">RelOptListener</a></th>
 <td class="colLast">
 <div class="block">RelOptListener defines an interface for listening to events which occur
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 <td class="colLast">
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 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptNode.html#org.apache.calcite.plan.volcano">RelOptNode</a></th>
 <td class="colLast">
 <div class="block">Node in a planner.</div>
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 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptPlanner.html#org.apache.calcite.plan.volcano">RelOptPlanner</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptPlanner</code> is a query optimizer: it transforms a relational
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 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRule.html#org.apache.calcite.plan.volcano">RelOptRule</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptRule</code> transforms an expression into another.</div>
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 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRuleCall.html#org.apache.calcite.plan.volcano">RelOptRuleCall</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptRuleCall</code> is an invocation of a <a href="RelOptRule.html" title="class in org.apache.calcite.plan"><code>RelOptRule</code></a> with a
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 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRuleOperand.html#org.apache.calcite.plan.volcano">RelOptRuleOperand</a></th>
 <td class="colLast">
 <div class="block">Operand that determines whether a <a href="RelOptRule.html" title="class in org.apache.calcite.plan"><code>RelOptRule</code></a>
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 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptSchema.html#org.apache.calcite.plan.volcano">RelOptSchema</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptSchema</code> is a set of <a href="RelOptTable.html" title="interface in org.apache.calcite.plan"><code>RelOptTable</code></a> objects.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.html#org.apache.calcite.plan.volcano">RelOptTable</a></th>
 <td class="colLast">
 <div class="block">Represents a relational dataset in a <a href="RelOptSchema.html" title="interface in org.apache.calcite.plan"><code>RelOptSchema</code></a>.</div>
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 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTraitDef.html#org.apache.calcite.plan.volcano">RelTraitDef</a></th>
 <td class="colLast">
 <div class="block">RelTraitDef represents a class of <a href="RelTrait.html" title="interface in org.apache.calcite.plan"><code>RelTrait</code></a>s.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTraitSet.html#org.apache.calcite.plan.volcano">RelTraitSet</a></th>
 <td class="colLast">
 <div class="block">RelTraitSet represents an ordered set of <a href="RelTrait.html" title="interface in org.apache.calcite.plan"><code>RelTrait</code></a>s.</div>
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 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.plan</a> used by <a href="../prepare/package-summary.html">org.apache.calcite.prepare</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Context.html#org.apache.calcite.prepare">Context</a></th>
 <td class="colLast">
 <div class="block">Provides library users a way to store data within the planner session and
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 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Convention.html#org.apache.calcite.prepare">Convention</a></th>
 <td class="colLast">
 <div class="block">Calling convention trait.</div>
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 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCluster.html#org.apache.calcite.prepare">RelOptCluster</a></th>
 <td class="colLast">
 <div class="block">An environment for related relational expressions during the
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 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCostFactory.html#org.apache.calcite.prepare">RelOptCostFactory</a></th>
 <td class="colLast">
 <div class="block">Cost model for query planning.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptPlanner.html#org.apache.calcite.prepare">RelOptPlanner</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptPlanner</code> is a query optimizer: it transforms a relational
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 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRule.html#org.apache.calcite.prepare">RelOptRule</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptRule</code> transforms an expression into another.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptSchema.html#org.apache.calcite.prepare">RelOptSchema</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptSchema</code> is a set of <a href="RelOptTable.html" title="interface in org.apache.calcite.plan"><code>RelOptTable</code></a> objects.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.html#org.apache.calcite.prepare">RelOptTable</a></th>
 <td class="colLast">
 <div class="block">Represents a relational dataset in a <a href="RelOptSchema.html" title="interface in org.apache.calcite.plan"><code>RelOptSchema</code></a>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.ToRelContext.html#org.apache.calcite.prepare">RelOptTable.ToRelContext</a></th>
 <td class="colLast">
 <div class="block">Contains the context needed to convert a a table into a relational
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 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.ViewExpander.html#org.apache.calcite.prepare">RelOptTable.ViewExpander</a></th>
 <td class="colLast">
 <div class="block">Can expand a view into relational expressions.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTraitDef.html#org.apache.calcite.prepare">RelTraitDef</a></th>
 <td class="colLast">
 <div class="block">RelTraitDef represents a class of <a href="RelTrait.html" title="interface in org.apache.calcite.plan"><code>RelTrait</code></a>s.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTraitSet.html#org.apache.calcite.prepare">RelTraitSet</a></th>
 <td class="colLast">
 <div class="block">RelTraitSet represents an ordered set of <a href="RelTrait.html" title="interface in org.apache.calcite.plan"><code>RelTrait</code></a>s.</div>
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 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.plan</a> used by <a href="../rel/package-summary.html">org.apache.calcite.rel</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Convention.html#org.apache.calcite.rel">Convention</a></th>
 <td class="colLast">
 <div class="block">Calling convention trait.</div>
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 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelMultipleTrait.html#org.apache.calcite.rel">RelMultipleTrait</a></th>
 <td class="colLast">
 <div class="block">Trait for which a given relational expression can have multiple values.</div>
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 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCluster.html#org.apache.calcite.rel">RelOptCluster</a></th>
 <td class="colLast">
 <div class="block">An environment for related relational expressions during the
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 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCost.html#org.apache.calcite.rel">RelOptCost</a></th>
 <td class="colLast">
 <div class="block">RelOptCost defines an interface for optimizer cost in terms of number of rows
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 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptNode.html#org.apache.calcite.rel">RelOptNode</a></th>
 <td class="colLast">
 <div class="block">Node in a planner.</div>
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 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptPlanner.html#org.apache.calcite.rel">RelOptPlanner</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptPlanner</code> is a query optimizer: it transforms a relational
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 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptQuery.html#org.apache.calcite.rel">RelOptQuery</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptQuery</code> represents a set of
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 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.html#org.apache.calcite.rel">RelOptTable</a></th>
 <td class="colLast">
 <div class="block">Represents a relational dataset in a <a href="RelOptSchema.html" title="interface in org.apache.calcite.plan"><code>RelOptSchema</code></a>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTrait.html#org.apache.calcite.rel">RelTrait</a></th>
 <td class="colLast">
 <div class="block">RelTrait represents the manifestation of a relational expression trait within
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 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTraitDef.html#org.apache.calcite.rel">RelTraitDef</a></th>
 <td class="colLast">
 <div class="block">RelTraitDef represents a class of <a href="RelTrait.html" title="interface in org.apache.calcite.plan"><code>RelTrait</code></a>s.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTraitSet.html#org.apache.calcite.rel">RelTraitSet</a></th>
 <td class="colLast">
 <div class="block">RelTraitSet represents an ordered set of <a href="RelTrait.html" title="interface in org.apache.calcite.plan"><code>RelTrait</code></a>s.</div>
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 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Convention.html#org.apache.calcite.rel.convert">Convention</a></th>
 <td class="colLast">
 <div class="block">Calling convention trait.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCluster.html#org.apache.calcite.rel.convert">RelOptCluster</a></th>
 <td class="colLast">
 <div class="block">An environment for related relational expressions during the
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 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCost.html#org.apache.calcite.rel.convert">RelOptCost</a></th>
 <td class="colLast">
 <div class="block">RelOptCost defines an interface for optimizer cost in terms of number of rows
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 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptNode.html#org.apache.calcite.rel.convert">RelOptNode</a></th>
 <td class="colLast">
 <div class="block">Node in a planner.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptPlanner.html#org.apache.calcite.rel.convert">RelOptPlanner</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptPlanner</code> is a query optimizer: it transforms a relational
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 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRule.html#org.apache.calcite.rel.convert">RelOptRule</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptRule</code> transforms an expression into another.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRuleCall.html#org.apache.calcite.rel.convert">RelOptRuleCall</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptRuleCall</code> is an invocation of a <a href="RelOptRule.html" title="class in org.apache.calcite.plan"><code>RelOptRule</code></a> with a
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 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTrait.html#org.apache.calcite.rel.convert">RelTrait</a></th>
 <td class="colLast">
 <div class="block">RelTrait represents the manifestation of a relational expression trait within
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 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTraitDef.html#org.apache.calcite.rel.convert">RelTraitDef</a></th>
 <td class="colLast">
 <div class="block">RelTraitDef represents a class of <a href="RelTrait.html" title="interface in org.apache.calcite.plan"><code>RelTrait</code></a>s.</div>
 </td>
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 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTraitSet.html#org.apache.calcite.rel.convert">RelTraitSet</a></th>
 <td class="colLast">
 <div class="block">RelTraitSet represents an ordered set of <a href="RelTrait.html" title="interface in org.apache.calcite.plan"><code>RelTrait</code></a>s.</div>
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 <tr>
 <th class="colFirst" scope="col">Class</th>
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 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCluster.html#org.apache.calcite.rel.core">RelOptCluster</a></th>
 <td class="colLast">
 <div class="block">An environment for related relational expressions during the
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 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCost.html#org.apache.calcite.rel.core">RelOptCost</a></th>
 <td class="colLast">
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 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptNode.html#org.apache.calcite.rel.core">RelOptNode</a></th>
 <td class="colLast">
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 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptPlanner.html#org.apache.calcite.rel.core">RelOptPlanner</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptPlanner</code> is a query optimizer: it transforms a relational
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 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptSamplingParameters.html#org.apache.calcite.rel.core">RelOptSamplingParameters</a></th>
 <td class="colLast">
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 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.html#org.apache.calcite.rel.core">RelOptTable</a></th>
 <td class="colLast">
 <div class="block">Represents a relational dataset in a <a href="RelOptSchema.html" title="interface in org.apache.calcite.plan"><code>RelOptSchema</code></a>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.ViewExpander.html#org.apache.calcite.rel.core">RelOptTable.ViewExpander</a></th>
 <td class="colLast">
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 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTraitSet.html#org.apache.calcite.rel.core">RelTraitSet</a></th>
 <td class="colLast">
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 <th class="colFirst" scope="col">Class</th>
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 <th class="colFirst" scope="row"><a href="class-use/RelOptCluster.html#org.apache.calcite.rel.externalize">RelOptCluster</a></th>
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 <th class="colFirst" scope="row"><a href="class-use/RelOptCluster.html#org.apache.calcite.rel.logical">RelOptCluster</a></th>
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 <th class="colFirst" scope="col">Class</th>
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 <th class="colFirst" scope="row"><a href="class-use/RelOptCluster.html#org.apache.calcite.sql2rel">RelOptCluster</a></th>
 <td class="colLast">
 <div class="block">An environment for related relational expressions during the
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 <th class="colFirst" scope="row"><a href="class-use/RelOptNode.html#org.apache.calcite.sql2rel">RelOptNode</a></th>
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 <div class="block">Node in a planner.</div>
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 <th class="colFirst" scope="row"><a href="class-use/RelOptPlanner.html#org.apache.calcite.sql2rel">RelOptPlanner</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptPlanner</code> is a query optimizer: it transforms a relational
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 <th class="colFirst" scope="row"><a href="class-use/RelOptRule.html#org.apache.calcite.sql2rel">RelOptRule</a></th>
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 <div class="block">A <code>RelOptRule</code> transforms an expression into another.</div>
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 <td class="colLast">
 <div class="block">A <code>RelOptRuleCall</code> is an invocation of a <a href="RelOptRule.html" title="class in org.apache.calcite.plan"><code>RelOptRule</code></a> with a
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 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.html#org.apache.calcite.sql2rel">RelOptTable</a></th>
 <td class="colLast">
 <div class="block">Represents a relational dataset in a <a href="RelOptSchema.html" title="interface in org.apache.calcite.plan"><code>RelOptSchema</code></a>.</div>
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 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.ToRelContext.html#org.apache.calcite.sql2rel">RelOptTable.ToRelContext</a></th>
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 <div class="block">Contains the context needed to convert a a table into a relational
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 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.ViewExpander.html#org.apache.calcite.sql2rel">RelOptTable.ViewExpander</a></th>
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 <div class="block">Result of calling
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 <th class="colFirst" scope="row"><a href="class-use/RelOptUtil.Logic.html#org.apache.calcite.sql2rel">RelOptUtil.Logic</a></th>
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 <div class="block">Policies for handling two- and three-valued boolean logic.</div>
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 <th class="colFirst" scope="row"><a href="class-use/RelOptUtil.SubQueryType.html#org.apache.calcite.sql2rel">RelOptUtil.SubQueryType</a></th>
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 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCluster.html#org.apache.calcite.statistic">RelOptCluster</a></th>
 <td class="colLast">
 <div class="block">An environment for related relational expressions during the
  optimization of a query.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptSchema.html#org.apache.calcite.statistic">RelOptSchema</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptSchema</code> is a set of <a href="RelOptTable.html" title="interface in org.apache.calcite.plan"><code>RelOptTable</code></a> objects.</div>
 </td>
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 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.html#org.apache.calcite.statistic">RelOptTable</a></th>
 <td class="colLast">
 <div class="block">Represents a relational dataset in a <a href="RelOptSchema.html" title="interface in org.apache.calcite.plan"><code>RelOptSchema</code></a>.</div>
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 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Context.html#org.apache.calcite.tools">Context</a></th>
 <td class="colLast">
 <div class="block">Provides library users a way to store data within the planner session and
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 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCluster.html#org.apache.calcite.tools">RelOptCluster</a></th>
 <td class="colLast">
 <div class="block">An environment for related relational expressions during the
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 </td>
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 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptCostFactory.html#org.apache.calcite.tools">RelOptCostFactory</a></th>
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 <th class="colFirst" scope="row"><a href="class-use/RelOptPlanner.html#org.apache.calcite.tools">RelOptPlanner</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptPlanner</code> is a query optimizer: it transforms a relational
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 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptRule.html#org.apache.calcite.tools">RelOptRule</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptRule</code> transforms an expression into another.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptSchema.html#org.apache.calcite.tools">RelOptSchema</a></th>
 <td class="colLast">
 <div class="block">A <code>RelOptSchema</code> is a set of <a href="RelOptTable.html" title="interface in org.apache.calcite.plan"><code>RelOptTable</code></a> objects.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelOptTable.ViewExpander.html#org.apache.calcite.tools">RelOptTable.ViewExpander</a></th>
 <td class="colLast">
 <div class="block">Can expand a view into relational expressions.</div>
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 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTraitDef.html#org.apache.calcite.tools">RelTraitDef</a></th>
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 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelTraitSet.html#org.apache.calcite.tools">RelTraitSet</a></th>
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 <div class="block">RelTraitSet represents an ordered set of <a href="RelTrait.html" title="interface in org.apache.calcite.plan"><code>RelTrait</code></a>s.</div>
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