org.apache.calcite.rel.rules

Class CalcRelSplitter.RelType

java.lang.Object

org.apache.calcite.rel.rules.CalcRelSplitter.RelType

Enclosing class:

CalcRelSplitter

public abstract static class CalcRelSplitter.RelType
extends Object

Type of relational expression. Determines which kinds of expressions it can handle.

Field Summary

Fields

Modifier and Type	Field and Description
private String	name

Constructor Summary

Constructors

Constructor and Description
RelType(String name)

Method Summary

Modifier and Type	Method and Description
protected abstract boolean	canImplement(RexCall call)
protected abstract boolean	canImplement(RexDynamicParam param)
protected abstract boolean	canImplement(RexFieldAccess field)
protected abstract boolean	canImplement(RexLiteral literal)
boolean	canImplement(RexNode expr, boolean condition) Returns whether this RelType can implement a given expression.
boolean	canImplement(RexProgram program) Returns whether this tester's RelType can implement a given program.
protected RelNode	makeRel(RelOptCluster cluster, RelTraitSet traitSet, RelBuilder relBuilder, RelNode input, RexProgram program)
protected boolean	supportsCondition()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

name

private final String name

Constructor Detail

RelType

public RelType(String name)

Method Detail

toString

public String toString()

Overrides:

toString in class Object

canImplement

protected abstract boolean canImplement(RexFieldAccess field)

canImplement

protected abstract boolean canImplement(RexDynamicParam param)

canImplement

protected abstract boolean canImplement(RexLiteral literal)

canImplement

protected abstract boolean canImplement(RexCall call)

supportsCondition

protected boolean supportsCondition()

makeRel

protected RelNode makeRel(RelOptCluster cluster,
                          RelTraitSet traitSet,
                          RelBuilder relBuilder,
                          RelNode input,
                          RexProgram program)

canImplement

public boolean canImplement(RexNode expr,
                            boolean condition)

Returns whether this RelType can implement a given expression.

Parameters:

expr - Expression

condition - Whether expression is a condition

Returns:

Whether this RelType can implement a given expression.

canImplement

public boolean canImplement(RexProgram program)

Returns whether this tester's RelType can implement a given program.

Parameters:

program - Program

Returns:

Whether this tester's RelType can implement a given program.