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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 RelOptLattice" class="title">Class RelOptLattice</h2> |
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| <li>java.lang.Object</li> |
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| <li>org.apache.calcite.plan.RelOptLattice</li> |
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| <pre>public class <span class="typeNameLabel">RelOptLattice</span> |
| extends java.lang.Object</pre> |
| <div class="block">Use of a lattice by the query optimizer.</div> |
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| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="../materialize/Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#lattice">lattice</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="RelOptTable.html" title="interface in org.apache.calcite.plan">RelOptTable</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#starRelOptTable">starRelOptTable</a></span></code></th> |
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| <th class="colFirst" scope="col">Constructor</th> |
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| <tr class="altColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.materialize.Lattice,org.apache.calcite.plan.RelOptTable)">RelOptLattice</a></span>​(<a href="../materialize/Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a> lattice, |
| <a href="RelOptTable.html" title="interface in org.apache.calcite.plan">RelOptTable</a> starRelOptTable)</code></th> |
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| <td class="colFirst"><code><a href="../util/Pair.html" title="class in org.apache.calcite.util">Pair</a><<a href="../jdbc/CalciteSchema.TableEntry.html" title="class in org.apache.calcite.jdbc">CalciteSchema.TableEntry</a>,​<a href="../materialize/TileKey.html" title="class in org.apache.calcite.materialize">TileKey</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getAggregate(org.apache.calcite.plan.RelOptPlanner,org.apache.calcite.util.ImmutableBitSet,java.util.List)">getAggregate</a></span>​(<a href="RelOptPlanner.html" title="interface in org.apache.calcite.plan">RelOptPlanner</a> planner, |
| <a href="../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a> groupSet, |
| java.util.List<<a href="../materialize/Lattice.Measure.html" title="class in org.apache.calcite.materialize">Lattice.Measure</a>> measureList)</code></th> |
| <td class="colLast"> |
| <div class="block">Retrieves a materialized table that will satisfy an aggregate query on |
| the star table.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#rewrite(org.apache.calcite.rel.RelNode)">rewrite</a></span>​(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> node)</code></th> |
| <td class="colLast"> |
| <div class="block">Rewrites a relational expression to use a lattice.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><a href="RelOptTable.html" title="interface in org.apache.calcite.plan">RelOptTable</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#rootTable()">rootTable</a></span>()</code></th> |
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| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
| </ul> |
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| <a id="lattice"> |
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| <li class="blockList"> |
| <h4>lattice</h4> |
| <pre>public final <a href="../materialize/Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a> lattice</pre> |
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| <h4>starRelOptTable</h4> |
| <pre>public final <a href="RelOptTable.html" title="interface in org.apache.calcite.plan">RelOptTable</a> starRelOptTable</pre> |
| </li> |
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| <h4>RelOptLattice</h4> |
| <pre>public RelOptLattice​(<a href="../materialize/Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a> lattice, |
| <a href="RelOptTable.html" title="interface in org.apache.calcite.plan">RelOptTable</a> starRelOptTable)</pre> |
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| <h4>rootTable</h4> |
| <pre class="methodSignature">public <a href="RelOptTable.html" title="interface in org.apache.calcite.plan">RelOptTable</a> rootTable()</pre> |
| </li> |
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| <a id="rewrite(org.apache.calcite.rel.RelNode)"> |
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| <h4>rewrite</h4> |
| <pre class="methodSignature">public <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> rewrite​(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> node)</pre> |
| <div class="block">Rewrites a relational expression to use a lattice. |
| |
| <p>Returns null if a rewrite is not possible.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>node</code> - Relational expression</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Rewritten query</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getAggregate(org.apache.calcite.plan.RelOptPlanner,org.apache.calcite.util.ImmutableBitSet,java.util.List)"> |
| <!-- --> |
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| <h4>getAggregate</h4> |
| <pre class="methodSignature">public <a href="../util/Pair.html" title="class in org.apache.calcite.util">Pair</a><<a href="../jdbc/CalciteSchema.TableEntry.html" title="class in org.apache.calcite.jdbc">CalciteSchema.TableEntry</a>,​<a href="../materialize/TileKey.html" title="class in org.apache.calcite.materialize">TileKey</a>> getAggregate​(<a href="RelOptPlanner.html" title="interface in org.apache.calcite.plan">RelOptPlanner</a> planner, |
| <a href="../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a> groupSet, |
| java.util.List<<a href="../materialize/Lattice.Measure.html" title="class in org.apache.calcite.materialize">Lattice.Measure</a>> measureList)</pre> |
| <div class="block">Retrieves a materialized table that will satisfy an aggregate query on |
| the star table. |
| |
| <p>The current implementation creates a materialization and populates it, |
| provided that <a href="../materialize/Lattice.html#auto"><code>Lattice.auto</code></a> is true. |
| |
| <p>Future implementations might return materializations at a different |
| level of aggregation, from which the desired result can be obtained by |
| rolling up.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>planner</code> - Current planner</dd> |
| <dd><code>groupSet</code> - Grouping key</dd> |
| <dd><code>measureList</code> - Calls to aggregate functions</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Materialized table</dd> |
| </dl> |
| </li> |
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