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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.plan</a></div> |
| <h2 title="Class RelOptMaterializations" class="title">Class RelOptMaterializations</h2> |
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| <pre>public abstract class <span class="typeNameLabel">RelOptMaterializations</span> |
| extends java.lang.Object</pre> |
| <div class="block">Utility methods for using |
| materialized views and lattices for queries.</div> |
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| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">RelOptMaterializations</a></span>()</code></th> |
| <td class="colLast"> </td> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>static java.util.List<<a href="RelOptMaterialization.html" title="class in org.apache.calcite.plan">RelOptMaterialization</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getApplicableMaterializations(org.apache.calcite.rel.RelNode,java.util.List)">getApplicableMaterializations</a></span>​(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| java.util.List<<a href="RelOptMaterialization.html" title="class in org.apache.calcite.plan">RelOptMaterialization</a>> materializations)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a list of materializations that can potentially be used by the query.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>private static java.util.List<<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#substitute(org.apache.calcite.rel.RelNode,org.apache.calcite.plan.RelOptMaterialization)">substitute</a></span>​(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> root, |
| <a href="RelOptMaterialization.html" title="class in org.apache.calcite.plan">RelOptMaterialization</a> materialization)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static java.util.List<<a href="../util/Pair.html" title="class in org.apache.calcite.util">Pair</a><<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>,​<a href="RelOptLattice.html" title="class in org.apache.calcite.plan">RelOptLattice</a>>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#useLattices(org.apache.calcite.rel.RelNode,java.util.List)">useLattices</a></span>​(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| java.util.List<<a href="RelOptLattice.html" title="class in org.apache.calcite.plan">RelOptLattice</a>> lattices)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a list of RelNode transformed from all possible lattice uses.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static java.util.List<<a href="../util/Pair.html" title="class in org.apache.calcite.util">Pair</a><<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>,​java.util.List<<a href="RelOptMaterialization.html" title="class in org.apache.calcite.plan">RelOptMaterialization</a>>>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#useMaterializedViews(org.apache.calcite.rel.RelNode,java.util.List)">useMaterializedViews</a></span>​(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| java.util.List<<a href="RelOptMaterialization.html" title="class in org.apache.calcite.plan">RelOptMaterialization</a>> materializations)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns a list of RelNode transformed from all possible combination of |
| materialized view uses.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>private static boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#usesTable(java.util.List,java.util.Set,org.apache.calcite.util.graph.Graphs.FrozenGraph)">usesTable</a></span>​(java.util.List<java.lang.String> qualifiedName, |
| java.util.Set<<a href="RelOptTable.html" title="interface in org.apache.calcite.plan">RelOptTable</a>> usedTables, |
| <a href="../util/graph/Graphs.FrozenGraph.html" title="class in org.apache.calcite.util.graph">Graphs.FrozenGraph</a><java.util.List<java.lang.String>,​<a href="../util/graph/DefaultEdge.html" title="class in org.apache.calcite.util.graph">DefaultEdge</a>> usesGraph)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns whether <code>table</code> uses one or more of the tables in |
| <code>usedTables</code>.</div> |
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| <h4>RelOptMaterializations</h4> |
| <pre>public RelOptMaterializations()</pre> |
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| <h4>useMaterializedViews</h4> |
| <pre class="methodSignature">public static java.util.List<<a href="../util/Pair.html" title="class in org.apache.calcite.util">Pair</a><<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>,​java.util.List<<a href="RelOptMaterialization.html" title="class in org.apache.calcite.plan">RelOptMaterialization</a>>>> useMaterializedViews​(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| java.util.List<<a href="RelOptMaterialization.html" title="class in org.apache.calcite.plan">RelOptMaterialization</a>> materializations)</pre> |
| <div class="block">Returns a list of RelNode transformed from all possible combination of |
| materialized view uses. Big queries will likely have more than one |
| transformed RelNode, e.g., (t1 group by c1) join (t2 group by c2).</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>rel</code> - the original RelNode</dd> |
| <dd><code>materializations</code> - the materialized view list</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the list of transformed RelNode together with their corresponding |
| materialized views used in the transformation.</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>useLattices</h4> |
| <pre class="methodSignature">public static java.util.List<<a href="../util/Pair.html" title="class in org.apache.calcite.util">Pair</a><<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>,​<a href="RelOptLattice.html" title="class in org.apache.calcite.plan">RelOptLattice</a>>> useLattices​(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| java.util.List<<a href="RelOptLattice.html" title="class in org.apache.calcite.plan">RelOptLattice</a>> lattices)</pre> |
| <div class="block">Returns a list of RelNode transformed from all possible lattice uses.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>rel</code> - the original RelNode</dd> |
| <dd><code>lattices</code> - the lattice list</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the list of transformed RelNode together with their corresponding |
| lattice used in the transformation.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getApplicableMaterializations(org.apache.calcite.rel.RelNode,java.util.List)"> |
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| <h4>getApplicableMaterializations</h4> |
| <pre class="methodSignature">public static java.util.List<<a href="RelOptMaterialization.html" title="class in org.apache.calcite.plan">RelOptMaterialization</a>> getApplicableMaterializations​(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rel, |
| java.util.List<<a href="RelOptMaterialization.html" title="class in org.apache.calcite.plan">RelOptMaterialization</a>> materializations)</pre> |
| <div class="block">Returns a list of materializations that can potentially be used by the query.</div> |
| </li> |
| </ul> |
| <a id="substitute(org.apache.calcite.rel.RelNode,org.apache.calcite.plan.RelOptMaterialization)"> |
| <!-- --> |
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| <h4>substitute</h4> |
| <pre class="methodSignature">private static java.util.List<<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>> substitute​(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> root, |
| <a href="RelOptMaterialization.html" title="class in org.apache.calcite.plan">RelOptMaterialization</a> materialization)</pre> |
| </li> |
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| <h4>usesTable</h4> |
| <pre class="methodSignature">private static boolean usesTable​(java.util.List<java.lang.String> qualifiedName, |
| java.util.Set<<a href="RelOptTable.html" title="interface in org.apache.calcite.plan">RelOptTable</a>> usedTables, |
| <a href="../util/graph/Graphs.FrozenGraph.html" title="class in org.apache.calcite.util.graph">Graphs.FrozenGraph</a><java.util.List<java.lang.String>,​<a href="../util/graph/DefaultEdge.html" title="class in org.apache.calcite.util.graph">DefaultEdge</a>> usesGraph)</pre> |
| <div class="block">Returns whether <code>table</code> uses one or more of the tables in |
| <code>usedTables</code>.</div> |
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