Package org.apache.calcite.linq4j.tree

Class ConstantExpression

java.lang.Object

org.apache.calcite.linq4j.tree.AbstractNode

org.apache.calcite.linq4j.tree.Expression

org.apache.calcite.linq4j.tree.ConstantExpression

All Implemented Interfaces:

Node

Direct Known Subclasses:

ConstantUntypedNull

public class ConstantExpression
extends Expression

Represents an expression that has a constant value.

Field Summary

Fields

Modifier and Type	Field	Description
final @Nullable Object	value

Fields inherited from class org.apache.calcite.linq4j.tree.AbstractNode

nodeType, type

Constructor Summary

Constructors

Constructor	Description
ConstantExpression(Type type, @Nullable Object value)

Method Summary

Modifier and Type	Method	Description
Expression	accept(Shuttle shuttle)
<R> R	accept(Visitor<R> visitor)
boolean	equals(@Nullable Object o)
@Nullable Object	evaluate(org.apache.calcite.linq4j.tree.Evaluator evaluator)
int	hashCode()

Methods inherited from class org.apache.calcite.linq4j.tree.Expression

canReduce

Methods inherited from class org.apache.calcite.linq4j.tree.AbstractNode

accept, getNodeType, getType, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

value

public final @Nullable Object value

Constructor Details

ConstantExpression

public ConstantExpression(Type type,
 @Nullable Object value)

Method Details

evaluate

public @Nullable Object evaluate(org.apache.calcite.linq4j.tree.Evaluator evaluator)

Overrides:

evaluate in class AbstractNode

accept

public Expression accept(Shuttle shuttle)

Specified by:

accept in interface Node

Specified by:

accept in class Expression

accept

public <R> R accept(Visitor<R> visitor)

equals

public boolean equals(@Nullable Object o)

Overrides:

equals in class AbstractNode

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractNode