org.apache.calcite.rex

Class RexExecutorImpl

java.lang.Object

org.apache.calcite.rex.RexExecutorImpl

All Implemented Interfaces:

RelOptPlanner.Executor

public class RexExecutorImpl
extends Object
implements RelOptPlanner.Executor

Evaluates a RexNode expression.

Constructor Summary

Constructors

Constructor and Description
RexExecutorImpl(DataContext dataContext)

Method Summary

Methods

Modifier and Type	Method and Description
RexExecutable	getExecutable(RexBuilder rexBuilder, List<RexNode> exps, RelDataType rowType) Creates an RexExecutable that allows to apply the generated code during query processing (filter, projection).
void	reduce(RexBuilder rexBuilder, List<RexNode> constExps, List<RexNode> reducedValues) Do constant reduction using generated code.

Methods inherited from class java.lang.Object

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

Constructor Detail

RexExecutorImpl

public RexExecutorImpl(DataContext dataContext)

Method Detail

getExecutable

public RexExecutable getExecutable(RexBuilder rexBuilder,
                          List<RexNode> exps,
                          RelDataType rowType)

Creates an RexExecutable that allows to apply the generated code during query processing (filter, projection).

Parameters:

rexBuilder - Rex builder

exps - Expressions

rowType - describes the structure of the input row.

reduce

public void reduce(RexBuilder rexBuilder,
          List<RexNode> constExps,
          List<RexNode> reducedValues)

Do constant reduction using generated code.

Specified by:

reduce in interface RelOptPlanner.Executor