org.camunda.bpm.engine.impl.juel

Class AstNull

java.lang.Object

org.camunda.bpm.engine.impl.juel.AstNode

org.camunda.bpm.engine.impl.juel.AstRightValue

org.camunda.bpm.engine.impl.juel.AstLiteral

org.camunda.bpm.engine.impl.juel.AstNull

All Implemented Interfaces:

ExpressionNode, Node

public final class AstNull
extends AstLiteral

Constructor Summary

Constructors

Constructor and Description
AstNull()

Method Summary

Methods

Modifier and Type	Method and Description
void	appendStructure(StringBuilder b, Bindings bindings)
Object	eval(Bindings bindings, ELContext context)
String	toString()

Methods inherited from class org.camunda.bpm.engine.impl.juel.AstLiteral

getCardinality, getChild

Methods inherited from class org.camunda.bpm.engine.impl.juel.AstRightValue

getMethodInfo, getType, getValueReference, invoke, isLeftValue, isLiteralText, isMethodInvocation, isReadOnly, setValue

Methods inherited from class org.camunda.bpm.engine.impl.juel.AstNode

getStructuralId, getValue

Methods inherited from class java.lang.Object

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

Constructor Detail

AstNull

public AstNull()

Method Detail

eval

public Object eval(Bindings bindings,
          ELContext context)

Specified by:

eval in class AstNode

toString

public String toString()

Overrides:

toString in class Object

appendStructure

public void appendStructure(StringBuilder b,
                   Bindings bindings)

Specified by:

appendStructure in class AstNode