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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.calcite.materialize</a></div> |
| <h2 title="Class LatticeSuggester" class="title">Class LatticeSuggester</h2> |
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| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.calcite.materialize.LatticeSuggester</li> |
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| <pre>public class <span class="typeNameLabel">LatticeSuggester</span> |
| extends java.lang.Object</pre> |
| <div class="block">Algorithm that suggests a set of lattices.</div> |
| </li> |
| </ul> |
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| <h3>Nested Class Summary</h3> |
| <table class="memberSummary"> |
| <caption><span>Nested Classes</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Class</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="LatticeSuggester.BaseColRef.html" title="class in org.apache.calcite.materialize">LatticeSuggester.BaseColRef</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Reference to a base column.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="LatticeSuggester.ColRef.html" title="class in org.apache.calcite.materialize">LatticeSuggester.ColRef</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Column reference.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="LatticeSuggester.DerivedColRef.html" title="class in org.apache.calcite.materialize">LatticeSuggester.DerivedColRef</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Reference to a derived column (that is, an expression).</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>(package private) static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="LatticeSuggester.Frame.html" title="class in org.apache.calcite.materialize">LatticeSuggester.Frame</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Information about the parent of fields from a relational expression.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="LatticeSuggester.Hop.html" title="class in org.apache.calcite.materialize">LatticeSuggester.Hop</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">A hop is a join condition.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="LatticeSuggester.MutableMeasure.html" title="class in org.apache.calcite.materialize">LatticeSuggester.MutableMeasure</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">An aggregate call.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="LatticeSuggester.Query.html" title="class in org.apache.calcite.materialize">LatticeSuggester.Query</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Holds state for a particular query graph.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="LatticeSuggester.StepRef.html" title="class in org.apache.calcite.materialize">LatticeSuggester.StepRef</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Use of a step within a query.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="LatticeSuggester.TableRef.html" title="class in org.apache.calcite.materialize">LatticeSuggester.TableRef</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Use of a table within a query.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
| <!-- =========== FIELD SUMMARY =========== --> |
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| </a> |
| <h3>Field Summary</h3> |
| <table class="memberSummary"> |
| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Field</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#evolve">evolve</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Whether to try to extend an existing lattice when adding a lattice.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>(package private) java.util.Map<java.lang.String,​<a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#latticeMap">latticeMap</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Lattices, indexed by digest.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private java.util.Map<<a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a>,​<a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#obsoleteLatticeMap">obsoleteLatticeMap</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Lattices that have been made obsolete.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private static <a href="../plan/hep/HepProgram.html" title="class in org.apache.calcite.plan.hep">HepProgram</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#PROGRAM">PROGRAM</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>(package private) <a href="LatticeSpace.html" title="class in org.apache.calcite.materialize">LatticeSpace</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#space">space</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
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| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Constructor</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.tools.FrameworkConfig)">LatticeSuggester</a></span>​(<a href="../tools/FrameworkConfig.html" title="interface in org.apache.calcite.tools">FrameworkConfig</a> config)</code></th> |
| <td class="colLast"> |
| <div class="block">Creates a LatticeSuggester.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>java.util.List<<a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#addQuery(org.apache.calcite.rel.RelNode)">addQuery</a></span>​(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> r)</code></th> |
| <td class="colLast"> |
| <div class="block">Adds a query.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#copyMeasures(org.apache.calcite.materialize.Lattice.Builder,org.apache.calcite.materialize.Lattice)">copyMeasures</a></span>​(<a href="Lattice.Builder.html" title="class in org.apache.calcite.materialize">Lattice.Builder</a> builder, |
| <a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a> lattice)</code></th> |
| <td class="colLast"> |
| <div class="block">Copies measures and column usages from an existing lattice into a builder, |
| using a mapper to translate old-to-new columns, so that the new lattice can |
| inherit from the old.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>private static java.lang.String</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#deriveAlias(org.apache.calcite.materialize.LatticeSuggester.MutableMeasure,org.apache.calcite.materialize.LatticeSuggester.DerivedColRef)">deriveAlias</a></span>​(<a href="LatticeSuggester.MutableMeasure.html" title="class in org.apache.calcite.materialize">LatticeSuggester.MutableMeasure</a> measure, |
| <a href="LatticeSuggester.DerivedColRef.html" title="class in org.apache.calcite.materialize">LatticeSuggester.DerivedColRef</a> derivedColRef)</code></th> |
| <td class="colLast"> |
| <div class="block">Derives the alias of an expression that is the argument to a measure.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>private <a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#findMatch(org.apache.calcite.materialize.Lattice,org.apache.calcite.materialize.MutableNode)">findMatch</a></span>​(<a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a> lattice, |
| <a href="MutableNode.html" title="class in org.apache.calcite.materialize">MutableNode</a> mutableNode)</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the best match for a lattice.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>private <a href="LatticeSuggester.Frame.html" title="class in org.apache.calcite.materialize">LatticeSuggester.Frame</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#frame(org.apache.calcite.materialize.LatticeSuggester.Query,org.apache.calcite.rel.RelNode)">frame</a></span>​(<a href="LatticeSuggester.Query.html" title="class in org.apache.calcite.materialize">LatticeSuggester.Query</a> q, |
| <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> r)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>java.util.Set<<a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getLatticeSet()">getLatticeSet</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Returns the minimal set of lattices necessary to cover all of the queries |
| seen.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>private int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#matchQuality(org.apache.calcite.materialize.Lattice,org.apache.calcite.materialize.Lattice)">matchQuality</a></span>​(<a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a> lattice, |
| <a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a> target)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>private static <E> java.util.Set<E></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#minus(java.util.Collection,java.util.Collection)">minus</a></span>​(java.util.Collection<E> c, |
| java.util.Collection<E> c2)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| </table> |
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| <li class="blockList"><a id="methods.inherited.from.class.java.lang.Object"> |
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| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ FIELD DETAIL =========== --> |
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| <h3>Field Detail</h3> |
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| <h4>space</h4> |
| <pre>final <a href="LatticeSpace.html" title="class in org.apache.calcite.materialize">LatticeSpace</a> space</pre> |
| </li> |
| </ul> |
| <a id="PROGRAM"> |
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| <h4>PROGRAM</h4> |
| <pre>private static final <a href="../plan/hep/HepProgram.html" title="class in org.apache.calcite.plan.hep">HepProgram</a> PROGRAM</pre> |
| </li> |
| </ul> |
| <a id="latticeMap"> |
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| <h4>latticeMap</h4> |
| <pre>final java.util.Map<java.lang.String,​<a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a>> latticeMap</pre> |
| <div class="block">Lattices, indexed by digest. Uses LinkedHashMap for determinacy.</div> |
| </li> |
| </ul> |
| <a id="obsoleteLatticeMap"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>obsoleteLatticeMap</h4> |
| <pre>private final java.util.Map<<a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a>,​<a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a>> obsoleteLatticeMap</pre> |
| <div class="block">Lattices that have been made obsolete. Key is the obsolete lattice, value |
| is the lattice that superseded it.</div> |
| </li> |
| </ul> |
| <a id="evolve"> |
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| </a> |
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| <h4>evolve</h4> |
| <pre>private final boolean evolve</pre> |
| <div class="block">Whether to try to extend an existing lattice when adding a lattice.</div> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| <h3>Constructor Detail</h3> |
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| <h4>LatticeSuggester</h4> |
| <pre>public LatticeSuggester​(<a href="../tools/FrameworkConfig.html" title="interface in org.apache.calcite.tools">FrameworkConfig</a> config)</pre> |
| <div class="block">Creates a LatticeSuggester.</div> |
| </li> |
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| <h3>Method Detail</h3> |
| <a id="getLatticeSet()"> |
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| </a> |
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| <li class="blockList"> |
| <h4>getLatticeSet</h4> |
| <pre class="methodSignature">public java.util.Set<<a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a>> getLatticeSet()</pre> |
| <div class="block">Returns the minimal set of lattices necessary to cover all of the queries |
| seen. Any lattices that are subsumed by other lattices are not included.</div> |
| </li> |
| </ul> |
| <a id="addQuery(org.apache.calcite.rel.RelNode)"> |
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| </a> |
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| <h4>addQuery</h4> |
| <pre class="methodSignature">public java.util.List<<a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a>> addQuery​(<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> r)</pre> |
| <div class="block">Adds a query. |
| |
| <p>It may fit within an existing lattice (or lattices). Or it may need a |
| new lattice, or an extension to an existing lattice.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>r</code> - Relational expression for a query</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>A list of join graphs: usually 1; more if the query contains a |
| cartesian product; zero if the query graph is cyclic</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="deriveAlias(org.apache.calcite.materialize.LatticeSuggester.MutableMeasure,org.apache.calcite.materialize.LatticeSuggester.DerivedColRef)"> |
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| <h4>deriveAlias</h4> |
| <pre class="methodSignature">private static java.lang.String deriveAlias​(<a href="LatticeSuggester.MutableMeasure.html" title="class in org.apache.calcite.materialize">LatticeSuggester.MutableMeasure</a> measure, |
| <a href="LatticeSuggester.DerivedColRef.html" title="class in org.apache.calcite.materialize">LatticeSuggester.DerivedColRef</a> derivedColRef)</pre> |
| <div class="block">Derives the alias of an expression that is the argument to a measure. |
| |
| <p>For example, if the measure is called "sum_profit" and the aggregate |
| function is "sum", returns "profit".</div> |
| </li> |
| </ul> |
| <a id="findMatch(org.apache.calcite.materialize.Lattice,org.apache.calcite.materialize.MutableNode)"> |
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| <h4>findMatch</h4> |
| <pre class="methodSignature">private <a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a> findMatch​(<a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a> lattice, |
| <a href="MutableNode.html" title="class in org.apache.calcite.materialize">MutableNode</a> mutableNode)</pre> |
| <div class="block">Returns the best match for a lattice. If no match, registers the lattice |
| and returns it. Never returns null.</div> |
| </li> |
| </ul> |
| <a id="copyMeasures(org.apache.calcite.materialize.Lattice.Builder,org.apache.calcite.materialize.Lattice)"> |
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| </a> |
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| <h4>copyMeasures</h4> |
| <pre class="methodSignature">private void copyMeasures​(<a href="Lattice.Builder.html" title="class in org.apache.calcite.materialize">Lattice.Builder</a> builder, |
| <a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a> lattice)</pre> |
| <div class="block">Copies measures and column usages from an existing lattice into a builder, |
| using a mapper to translate old-to-new columns, so that the new lattice can |
| inherit from the old.</div> |
| </li> |
| </ul> |
| <a id="matchQuality(org.apache.calcite.materialize.Lattice,org.apache.calcite.materialize.Lattice)"> |
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| <h4>matchQuality</h4> |
| <pre class="methodSignature">private int matchQuality​(<a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a> lattice, |
| <a href="Lattice.html" title="class in org.apache.calcite.materialize">Lattice</a> target)</pre> |
| </li> |
| </ul> |
| <a id="minus(java.util.Collection,java.util.Collection)"> |
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| <h4>minus</h4> |
| <pre class="methodSignature">private static <E> java.util.Set<E> minus​(java.util.Collection<E> c, |
| java.util.Collection<E> c2)</pre> |
| </li> |
| </ul> |
| <a id="frame(org.apache.calcite.materialize.LatticeSuggester.Query,org.apache.calcite.rel.RelNode)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>frame</h4> |
| <pre class="methodSignature">private <a href="LatticeSuggester.Frame.html" title="class in org.apache.calcite.materialize">LatticeSuggester.Frame</a> frame​(<a href="LatticeSuggester.Query.html" title="class in org.apache.calcite.materialize">LatticeSuggester.Query</a> q, |
| <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a> r)</pre> |
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