org.apache.calcite.prepare

Class CalciteMaterializer

java.lang.Object

org.apache.calcite.prepare.Prepare

org.apache.calcite.prepare.CalcitePrepareImpl.CalcitePreparingStmt

org.apache.calcite.prepare.CalciteMaterializer

All Implemented Interfaces:

RelOptTable.ViewExpander

class CalciteMaterializer
extends CalcitePrepareImpl.CalcitePreparingStmt

Context for populating a Prepare.Materialization.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) static class	CalciteMaterializer.Callback Called when we discover a star table that matches.
(package private) static class	CalciteMaterializer.RelNullShuttle Implementation of RelShuttle that returns each relational expression unchanged.

Nested classes/interfaces inherited from class org.apache.calcite.prepare.Prepare

Prepare.AbstractPreparingTable, Prepare.CatalogReader, Prepare.Materialization, Prepare.PreparedExplain, Prepare.PreparedResult, Prepare.PreparedResultImpl, Prepare.PreparingTable

Field Summary

Fields inherited from class org.apache.calcite.prepare.CalcitePrepareImpl.CalcitePreparingStmt

convertletTable, planner, prepare, rexBuilder, schema, typeFactory

Fields inherited from class org.apache.calcite.prepare.Prepare

catalogReader, context, fieldOrigins, LOGGER, parameterRowType, resultConvention, THREAD_EXPAND, THREAD_TRIM, timingTracer

Constructor Summary

Constructors

Constructor and Description
CalciteMaterializer(CalcitePrepareImpl prepare, CalcitePrepare.Context context, Prepare.CatalogReader catalogReader, CalciteSchema schema, RelOptPlanner planner, SqlRexConvertletTable convertletTable)

Method Summary

Modifier and Type	Method and Description
(package private) void	populate(Prepare.Materialization materialization) Populates a materialization record, converting a table path (essentially a list of strings, like ["hr", "sales"]) into a table object that can be used in the planning process.
private void	useStar(CalciteSchema schema, Prepare.Materialization materialization) Converts a relational expression to use a StarTable defined in schema.
private Iterable<CalciteMaterializer.Callback>	useStar(CalciteSchema schema, RelNode queryRel) Converts a relational expression to use a StarTable defined in schema.

Methods inherited from class org.apache.calcite.prepare.CalcitePrepareImpl.CalcitePreparingStmt

createPreparedExplanation, createSqlValidator, decorrelate, expandView, flattenTypes, getLattices, getMaterializations, getSqlToRelConverter, getSqlValidator, implement, init, prepareQueryable, prepareRel

Methods inherited from class org.apache.calcite.prepare.Prepare

getDesiredRootTraitSet, getProgram, mapTableModOp, optimize, prepareSql, prepareSql, trimUnusedFields

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CalciteMaterializer

CalciteMaterializer(CalcitePrepareImpl prepare,
                    CalcitePrepare.Context context,
                    Prepare.CatalogReader catalogReader,
                    CalciteSchema schema,
                    RelOptPlanner planner,
                    SqlRexConvertletTable convertletTable)

Method Detail

populate

void populate(Prepare.Materialization materialization)

Populates a materialization record, converting a table path (essentially a list of strings, like ["hr", "sales"]) into a table object that can be used in the planning process.

useStar

private void useStar(CalciteSchema schema,
                     Prepare.Materialization materialization)

Converts a relational expression to use a StarTable defined in schema. Uses the first star table that fits.

useStar

private Iterable<CalciteMaterializer.Callback> useStar(CalciteSchema schema,
                                                       RelNode queryRel)

Converts a relational expression to use a StarTable defined in schema. Uses the first star table that fits.