org.apache.hadoop.hive.ql.optimizer.calcite.rules

Class HiveRelFieldTrimmer

java.lang.Object

org.apache.calcite.sql2rel.RelFieldTrimmer

org.apache.hadoop.hive.ql.optimizer.calcite.rules.HiveRelFieldTrimmer

All Implemented Interfaces:

org.apache.calcite.util.ReflectiveVisitor

public class HiveRelFieldTrimmer
extends org.apache.calcite.sql2rel.RelFieldTrimmer

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.calcite.sql2rel.RelFieldTrimmer

org.apache.calcite.sql2rel.RelFieldTrimmer.TrimResult

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.slf4j.Logger	LOG

Constructor Summary

Constructors

Constructor and Description
HiveRelFieldTrimmer(org.apache.calcite.sql.validate.SqlValidator validator, org.apache.calcite.tools.RelBuilder relBuilder)
HiveRelFieldTrimmer(org.apache.calcite.sql.validate.SqlValidator validator, org.apache.calcite.tools.RelBuilder relBuilder, boolean fetchStats)
HiveRelFieldTrimmer(org.apache.calcite.sql.validate.SqlValidator validator, org.apache.calcite.tools.RelBuilder relBuilder, ColumnAccessInfo columnAccessInfo, Map<HiveProject,Table> viewToTableSchema)

Method Summary

Modifier and Type	Method and Description
protected org.apache.calcite.sql2rel.RelFieldTrimmer.TrimResult	result(org.apache.calcite.rel.RelNode r, org.apache.calcite.util.mapping.Mapping mapping)
protected org.apache.calcite.sql2rel.RelFieldTrimmer.TrimResult	trimChild(org.apache.calcite.rel.RelNode rel, org.apache.calcite.rel.RelNode input, org.apache.calcite.util.ImmutableBitSet fieldsUsed, Set<org.apache.calcite.rel.type.RelDataTypeField> extraFields) Trims the fields of an input relational expression.
org.apache.calcite.sql2rel.RelFieldTrimmer.TrimResult	trimFields(org.apache.calcite.adapter.druid.DruidQuery dq, org.apache.calcite.util.ImmutableBitSet fieldsUsed, Set<org.apache.calcite.rel.type.RelDataTypeField> extraFields) Variant of RelFieldTrimmer.trimFields(RelNode, ImmutableBitSet, Set) for DruidQuery.
org.apache.calcite.sql2rel.RelFieldTrimmer.TrimResult	trimFields(HiveMultiJoin join, org.apache.calcite.util.ImmutableBitSet fieldsUsed, Set<org.apache.calcite.rel.type.RelDataTypeField> extraFields) Variant of RelFieldTrimmer.trimFields(RelNode, ImmutableBitSet, Set) for HiveMultiJoin.
org.apache.calcite.sql2rel.RelFieldTrimmer.TrimResult	trimFields(org.apache.calcite.rel.core.Project project, org.apache.calcite.util.ImmutableBitSet fieldsUsed, Set<org.apache.calcite.rel.type.RelDataTypeField> extraFields) Variant of RelFieldTrimmer.trimFields(RelNode, ImmutableBitSet, Set) for LogicalProject.
org.apache.calcite.sql2rel.RelFieldTrimmer.TrimResult	trimFields(org.apache.calcite.rel.core.TableScan tableAccessRel, org.apache.calcite.util.ImmutableBitSet fieldsUsed, Set<org.apache.calcite.rel.type.RelDataTypeField> extraFields)

Methods inherited from class org.apache.calcite.sql2rel.RelFieldTrimmer

createMapping, dispatchTrimFields, dummyProject, trim, trimChildRestore, trimFields, trimFields, trimFields, trimFields, trimFields, trimFields, trimFields, trimFields, trimFields

Methods inherited from class java.lang.Object

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

Field Detail

LOG

protected static final org.slf4j.Logger LOG

Constructor Detail

HiveRelFieldTrimmer

public HiveRelFieldTrimmer(org.apache.calcite.sql.validate.SqlValidator validator,
                           org.apache.calcite.tools.RelBuilder relBuilder)

HiveRelFieldTrimmer

public HiveRelFieldTrimmer(org.apache.calcite.sql.validate.SqlValidator validator,
                           org.apache.calcite.tools.RelBuilder relBuilder,
                           ColumnAccessInfo columnAccessInfo,
                           Map<HiveProject,Table> viewToTableSchema)

HiveRelFieldTrimmer

public HiveRelFieldTrimmer(org.apache.calcite.sql.validate.SqlValidator validator,
                           org.apache.calcite.tools.RelBuilder relBuilder,
                           boolean fetchStats)

Method Detail

trimChild

protected org.apache.calcite.sql2rel.RelFieldTrimmer.TrimResult trimChild(org.apache.calcite.rel.RelNode rel,
                                                                          org.apache.calcite.rel.RelNode input,
                                                                          org.apache.calcite.util.ImmutableBitSet fieldsUsed,
                                                                          Set<org.apache.calcite.rel.type.RelDataTypeField> extraFields)

Trims the fields of an input relational expression.

Overrides:

trimChild in class org.apache.calcite.sql2rel.RelFieldTrimmer

Parameters:

rel - Relational expression

input - Input relational expression, whose fields to trim

fieldsUsed - Bitmap of fields needed by the consumer

Returns:

New relational expression and its field mapping

trimFields

public org.apache.calcite.sql2rel.RelFieldTrimmer.TrimResult trimFields(HiveMultiJoin join,
                                                                        org.apache.calcite.util.ImmutableBitSet fieldsUsed,
                                                                        Set<org.apache.calcite.rel.type.RelDataTypeField> extraFields)

Variant of RelFieldTrimmer.trimFields(RelNode, ImmutableBitSet, Set) for HiveMultiJoin.

trimFields

public org.apache.calcite.sql2rel.RelFieldTrimmer.TrimResult trimFields(org.apache.calcite.adapter.druid.DruidQuery dq,
                                                                        org.apache.calcite.util.ImmutableBitSet fieldsUsed,
                                                                        Set<org.apache.calcite.rel.type.RelDataTypeField> extraFields)

Variant of RelFieldTrimmer.trimFields(RelNode, ImmutableBitSet, Set) for DruidQuery.

trimFields

public org.apache.calcite.sql2rel.RelFieldTrimmer.TrimResult trimFields(org.apache.calcite.rel.core.Project project,
                                                                        org.apache.calcite.util.ImmutableBitSet fieldsUsed,
                                                                        Set<org.apache.calcite.rel.type.RelDataTypeField> extraFields)

Variant of RelFieldTrimmer.trimFields(RelNode, ImmutableBitSet, Set) for LogicalProject.

Overrides:

trimFields in class org.apache.calcite.sql2rel.RelFieldTrimmer

trimFields

public org.apache.calcite.sql2rel.RelFieldTrimmer.TrimResult trimFields(org.apache.calcite.rel.core.TableScan tableAccessRel,
                                                                        org.apache.calcite.util.ImmutableBitSet fieldsUsed,
                                                                        Set<org.apache.calcite.rel.type.RelDataTypeField> extraFields)

Overrides:

trimFields in class org.apache.calcite.sql2rel.RelFieldTrimmer

result

protected org.apache.calcite.sql2rel.RelFieldTrimmer.TrimResult result(org.apache.calcite.rel.RelNode r,
                                                                       org.apache.calcite.util.mapping.Mapping mapping)

Overrides:

result in class org.apache.calcite.sql2rel.RelFieldTrimmer