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| <h1 title="程序包" class="title">程序包 org.apache.calcite.materialize</h1> |
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| <div class="block">Management of materialized query results.</div> |
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| <p>请参阅: <a href="#package.description">说明</a></p> |
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| <th class="colFirst" scope="col">接口</th> |
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| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/LatticeStatisticProvider.html" title="org.apache.calcite.materialize中的接口">LatticeStatisticProvider</a></td> |
| <td class="colLast"> |
| <div class="block">Estimates row counts for a lattice and its attributes.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/LatticeStatisticProvider.Factory.html" title="org.apache.calcite.materialize中的接口">LatticeStatisticProvider.Factory</a></td> |
| <td class="colLast"> |
| <div class="block">Creates a <a href="../../../../org/apache/calcite/materialize/LatticeStatisticProvider.html" title="org.apache.calcite.materialize中的接口"><code>LatticeStatisticProvider</code></a> for a given |
| <a href="../../../../org/apache/calcite/materialize/Lattice.html" title="org.apache.calcite.materialize中的类"><code>Lattice</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/MaterializationService.TableFactory.html" title="org.apache.calcite.materialize中的接口">MaterializationService.TableFactory</a></td> |
| <td class="colLast"> |
| <div class="block">Creates tables that represent a materialized view.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/SqlStatisticProvider.html" title="org.apache.calcite.materialize中的接口">SqlStatisticProvider</a></td> |
| <td class="colLast"> |
| <div class="block">Estimates row counts for tables and columns, and whether combinations of |
| columns form primary/unique and foreign keys.</div> |
| </td> |
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| <th class="colFirst" scope="col">类</th> |
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| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/DelegatingLatticeStatisticProvider.html" title="org.apache.calcite.materialize中的类">DelegatingLatticeStatisticProvider</a></td> |
| <td class="colLast"> |
| <div class="block">Implementation of <a href="../../../../org/apache/calcite/materialize/LatticeStatisticProvider.html" title="org.apache.calcite.materialize中的接口"><code>LatticeStatisticProvider</code></a> that delegates |
| to an underlying provider.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/Lattice.html" title="org.apache.calcite.materialize中的类">Lattice</a></td> |
| <td class="colLast"> |
| <div class="block">Structure that allows materialized views based upon a star schema to be |
| recognized and recommended.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/Lattice.BaseColumn.html" title="org.apache.calcite.materialize中的类">Lattice.BaseColumn</a></td> |
| <td class="colLast"> |
| <div class="block">Column in a lattice.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/Lattice.Builder.html" title="org.apache.calcite.materialize中的类">Lattice.Builder</a></td> |
| <td class="colLast"> |
| <div class="block">Lattice builder.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/Lattice.Column.html" title="org.apache.calcite.materialize中的类">Lattice.Column</a></td> |
| <td class="colLast"> |
| <div class="block">Column in a lattice.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/Lattice.DerivedColumn.html" title="org.apache.calcite.materialize中的类">Lattice.DerivedColumn</a></td> |
| <td class="colLast"> |
| <div class="block">Column in a lattice that is based upon a SQL expression.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/Lattice.Measure.html" title="org.apache.calcite.materialize中的类">Lattice.Measure</a></td> |
| <td class="colLast"> |
| <div class="block">A measure within a <a href="../../../../org/apache/calcite/materialize/Lattice.html" title="org.apache.calcite.materialize中的类"><code>Lattice</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/Lattice.SqlWriter.html" title="org.apache.calcite.materialize中的类">Lattice.SqlWriter</a></td> |
| <td class="colLast"> |
| <div class="block">The information necessary to convert a column to SQL.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/Lattice.Tile.html" title="org.apache.calcite.materialize中的类">Lattice.Tile</a></td> |
| <td class="colLast"> |
| <div class="block">Materialized aggregate within a lattice.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/Lattice.TileBuilder.html" title="org.apache.calcite.materialize中的类">Lattice.TileBuilder</a></td> |
| <td class="colLast"> |
| <div class="block">Tile builder.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/LatticeChildNode.html" title="org.apache.calcite.materialize中的类">LatticeChildNode</a></td> |
| <td class="colLast"> |
| <div class="block">Non-root node in a <a href="../../../../org/apache/calcite/materialize/Lattice.html" title="org.apache.calcite.materialize中的类"><code>Lattice</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/LatticeNode.html" title="org.apache.calcite.materialize中的类">LatticeNode</a></td> |
| <td class="colLast"> |
| <div class="block">Source relation of a lattice.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/LatticeRootNode.html" title="org.apache.calcite.materialize中的类">LatticeRootNode</a></td> |
| <td class="colLast"> |
| <div class="block">Root node in a <a href="../../../../org/apache/calcite/materialize/Lattice.html" title="org.apache.calcite.materialize中的类"><code>Lattice</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/Lattices.html" title="org.apache.calcite.materialize中的类">Lattices</a></td> |
| <td class="colLast"> |
| <div class="block">Utilities for <a href="../../../../org/apache/calcite/materialize/Lattice.html" title="org.apache.calcite.materialize中的类"><code>Lattice</code></a>, <a href="../../../../org/apache/calcite/materialize/LatticeStatisticProvider.html" title="org.apache.calcite.materialize中的接口"><code>LatticeStatisticProvider</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/LatticeSuggester.html" title="org.apache.calcite.materialize中的类">LatticeSuggester</a></td> |
| <td class="colLast"> |
| <div class="block">Algorithm that suggests a set of lattices.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/LatticeTable.html" title="org.apache.calcite.materialize中的类">LatticeTable</a></td> |
| <td class="colLast"> |
| <div class="block">Table registered in the graph.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/MaterializationKey.html" title="org.apache.calcite.materialize中的类">MaterializationKey</a></td> |
| <td class="colLast"> |
| <div class="block">Unique identifier for a materialization.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/MaterializationService.html" title="org.apache.calcite.materialize中的类">MaterializationService</a></td> |
| <td class="colLast"> |
| <div class="block">Manages the collection of materialized tables known to the system, |
| and the process by which they become valid and invalid.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/MaterializationService.DefaultTableFactory.html" title="org.apache.calcite.materialize中的类">MaterializationService.DefaultTableFactory</a></td> |
| <td class="colLast"> |
| <div class="block">Default implementation of <a href="../../../../org/apache/calcite/materialize/MaterializationService.TableFactory.html" title="org.apache.calcite.materialize中的接口"><code>MaterializationService.TableFactory</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/TileKey.html" title="org.apache.calcite.materialize中的类">TileKey</a></td> |
| <td class="colLast"> |
| <div class="block">Definition of a particular combination of dimensions and measures of a |
| lattice that is the basis of a materialization.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/calcite/materialize/TileSuggester.html" title="org.apache.calcite.materialize中的类">TileSuggester</a></td> |
| <td class="colLast"> |
| <div class="block">Algorithm that suggests a set of initial tiles (materialized aggregate views) |
| for a given lattice.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
| </ul> |
| <a name="package.description"> |
| <!-- --> |
| </a> |
| <h2 title="程序包org.apache.calcite.materialize的说明">程序包org.apache.calcite.materialize的说明</h2> |
| <div class="block">Management of materialized query results. |
| |
| <p>An actor (<code>MaterializationActor</code>) |
| maintains the state of all |
| materializations in the system and is wrapped in a service |
| (<a href="../../../../org/apache/calcite/materialize/MaterializationService.html" title="org.apache.calcite.materialize中的类"><code>MaterializationService</code></a>) |
| for access from other parts of the system.</p> |
| |
| <p>Optimizer rules allow Calcite to rewrite queries using materializations, |
| if they are valid (that is, contain the same result as executing their |
| defining query) and lower cost. |
| |
| <p>In future, the actor may manage the process of updating materializations, |
| instantiating materializations from the intermediate results of queries, and |
| recognize what materializations would be useful based on actual query load.</div> |
| </div> |
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