Package org.apache.calcite.adapter.pig

Class PigRelFactories.PigFilterFactory

java.lang.Object

org.apache.calcite.adapter.pig.PigRelFactories.PigFilterFactory

All Implemented Interfaces:

RelFactories.FilterFactory

Enclosing class:

PigRelFactories

public static class PigRelFactories.PigFilterFactory
extends Object
implements RelFactories.FilterFactory

Implementation of RelFactories.FilterFactory that returns a PigFilter.

Field Summary

Fields

Modifier and Type	Field	Description
static final PigRelFactories.PigFilterFactory	INSTANCE

Constructor Summary

Constructors

Constructor	Description
PigFilterFactory()

Method Summary

Modifier and Type	Method	Description
RelNode	createFilter(RelNode input, RexNode condition, Set<CorrelationId> variablesSet)	Creates a filter.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.calcite.rel.core.RelFactories.FilterFactory

createFilter

Field Details

INSTANCE

public static final PigRelFactories.PigFilterFactory INSTANCE

Constructor Details

PigFilterFactory

public PigFilterFactory()

Method Details

createFilter

public RelNode createFilter(RelNode input,
 RexNode condition,
 Set<CorrelationId> variablesSet)

Description copied from interface: RelFactories.FilterFactory

Creates a filter.

Some implementations of Filter do not support correlation variables, and for these, this method will throw if variablesSet is not empty.

Specified by:

createFilter in interface RelFactories.FilterFactory

Parameters:

input - Input relational expression

condition - Filter condition; only rows for which this condition evaluates to TRUE will be emitted

variablesSet - Correlating variables that are set when reading a row from the input, and which may be referenced from inside the condition