org.apache.calcite.prepare

Class CalcitePrepareImpl.CalcitePreparingStmt

java.lang.Object

org.apache.calcite.prepare.Prepare

org.apache.calcite.prepare.CalcitePrepareImpl.CalcitePreparingStmt

All Implemented Interfaces:

RelOptTable.ViewExpander

Direct Known Subclasses:

CalciteMaterializer

Enclosing class:

CalcitePrepareImpl

static class CalcitePrepareImpl.CalcitePreparingStmt
extends Prepare
implements RelOptTable.ViewExpander

Holds state for the process of preparing a SQL statement.

Nested Class Summary

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

Modifier and Type	Field and Description
protected SqlRexConvertletTable	convertletTable
private int	expansionDepth
private Map<String,Object>	internalParameters
protected RelOptPlanner	planner
private EnumerableRel.Prefer	prefer
protected CalcitePrepareImpl	prepare
protected RexBuilder	rexBuilder
protected CalciteSchema	schema
private SqlValidator	sqlValidator
protected RelDataTypeFactory	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
CalcitePreparingStmt(CalcitePrepareImpl prepare, CalcitePrepare.Context context, Prepare.CatalogReader catalogReader, RelDataTypeFactory typeFactory, CalciteSchema schema, EnumerableRel.Prefer prefer, RelOptPlanner planner, Convention resultConvention, SqlRexConvertletTable convertletTable)

Method Summary

Modifier and Type	Method and Description
protected Prepare.PreparedResult	createPreparedExplanation(RelDataType resultType, RelDataType parameterRowType, RelRoot root, SqlExplainFormat format, SqlExplainLevel detailLevel)
protected SqlValidator	createSqlValidator(Prepare.CatalogReader catalogReader)
protected RelNode	decorrelate(SqlToRelConverter sqlToRelConverter, SqlNode query, RelNode rootRel)
RelRoot	expandView(RelDataType rowType, String queryString, List<String> schemaPath, List<String> viewPath) Returns a relational expression that is to be substituted for an access to a SQL view.
RelNode	flattenTypes(RelNode rootRel, boolean restructure)
protected List<CalciteSchema.LatticeEntry>	getLattices()
protected List<Prepare.Materialization>	getMaterializations()
protected SqlToRelConverter	getSqlToRelConverter(SqlValidator validator, Prepare.CatalogReader catalogReader, SqlToRelConverter.Config config) Protected method to allow subclasses to override construction of SqlToRelConverter.
protected SqlValidator	getSqlValidator()
protected Prepare.PreparedResult	implement(RelRoot root) Implements a physical query plan.
protected void	init(Class runtimeContextClass)
private Prepare.PreparedResult	prepare_(com.google.common.base.Supplier<RelNode> fn, RelDataType resultType)
Prepare.PreparedResult	prepareQueryable(Queryable queryable, RelDataType resultType)
Prepare.PreparedResult	prepareRel(RelNode rel)

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

Field Detail

planner

protected final RelOptPlanner planner

rexBuilder

protected final RexBuilder rexBuilder

prepare

protected final CalcitePrepareImpl prepare

schema

protected final CalciteSchema schema

typeFactory

protected final RelDataTypeFactory typeFactory

convertletTable

protected final SqlRexConvertletTable convertletTable

prefer

private final EnumerableRel.Prefer prefer

internalParameters

private final Map<String,Object> internalParameters

expansionDepth

private int expansionDepth

sqlValidator

private SqlValidator sqlValidator

Constructor Detail

CalcitePreparingStmt

CalcitePreparingStmt(CalcitePrepareImpl prepare,
                     CalcitePrepare.Context context,
                     Prepare.CatalogReader catalogReader,
                     RelDataTypeFactory typeFactory,
                     CalciteSchema schema,
                     EnumerableRel.Prefer prefer,
                     RelOptPlanner planner,
                     Convention resultConvention,
                     SqlRexConvertletTable convertletTable)

Method Detail

init

protected void init(Class runtimeContextClass)

Specified by:

init in class Prepare

prepareQueryable

public Prepare.PreparedResult prepareQueryable(Queryable queryable,
                                               RelDataType resultType)

prepareRel

public Prepare.PreparedResult prepareRel(RelNode rel)

prepare_

private Prepare.PreparedResult prepare_(com.google.common.base.Supplier<RelNode> fn,
                                        RelDataType resultType)

getSqlToRelConverter

protected SqlToRelConverter getSqlToRelConverter(SqlValidator validator,
                                                 Prepare.CatalogReader catalogReader,
                                                 SqlToRelConverter.Config config)

Description copied from class: Prepare

Protected method to allow subclasses to override construction of SqlToRelConverter.

Specified by:

getSqlToRelConverter in class Prepare

flattenTypes

public RelNode flattenTypes(RelNode rootRel,
                            boolean restructure)

Specified by:

flattenTypes in class Prepare

decorrelate

protected RelNode decorrelate(SqlToRelConverter sqlToRelConverter,
                              SqlNode query,
                              RelNode rootRel)

Specified by:

decorrelate in class Prepare

expandView

public RelRoot expandView(RelDataType rowType,
                          String queryString,
                          List<String> schemaPath,
                          List<String> viewPath)

Description copied from interface: RelOptTable.ViewExpander

Returns a relational expression that is to be substituted for an access to a SQL view.

Specified by:

expandView in interface RelOptTable.ViewExpander

Overrides:

expandView in class Prepare

Parameters:

rowType - Row type of the view

queryString - Body of the view

schemaPath - Path of a schema wherein to find referenced tables

viewPath - Path of the view, ending with its name; may be null

Returns:

Relational expression

createSqlValidator

protected SqlValidator createSqlValidator(Prepare.CatalogReader catalogReader)

getSqlValidator

protected SqlValidator getSqlValidator()

Specified by:

getSqlValidator in class Prepare

createPreparedExplanation

protected Prepare.PreparedResult createPreparedExplanation(RelDataType resultType,
                                                           RelDataType parameterRowType,
                                                           RelRoot root,
                                                           SqlExplainFormat format,
                                                           SqlExplainLevel detailLevel)

Specified by:

createPreparedExplanation in class Prepare

implement

protected Prepare.PreparedResult implement(RelRoot root)

Description copied from class: Prepare

Implements a physical query plan.

Specified by:

implement in class Prepare

Parameters:

root - Root of the relational expression tree

Returns:

an executable plan

getMaterializations

protected List<Prepare.Materialization> getMaterializations()

Specified by:

getMaterializations in class Prepare

getLattices

protected List<CalciteSchema.LatticeEntry> getLattices()

Specified by:

getLattices in class Prepare