org.camunda.bpm.engine.impl.juel
Class AstUnary

java.lang.Object
  org.camunda.bpm.engine.impl.juel.AstNode
      org.camunda.bpm.engine.impl.juel.AstRightValue
          org.camunda.bpm.engine.impl.juel.AstUnary

All Implemented Interfaces:

ExpressionNode, Node

public class AstUnary
extends AstRightValue

Nested Class Summary

static interface	AstUnary.Operator
static class	AstUnary.SimpleOperator

Field Summary

static AstUnary.Operator	EMPTY
static AstUnary.Operator	NEG
static AstUnary.Operator	NOT

Constructor Summary

AstUnary(AstNode child, AstUnary.Operator operator)

Method Summary

void	appendStructure(StringBuilder b, Bindings bindings)
Object	eval(Bindings bindings, ELContext context)
int	getCardinality() Get the node's number of children.
AstNode	getChild(int i) Get i'th child
AstUnary.Operator	getOperator()
String	toString()

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

Field Detail

EMPTY

public static final AstUnary.Operator EMPTY

NEG

public static final AstUnary.Operator NEG

NOT

public static final AstUnary.Operator NOT

Constructor Detail

AstUnary

public AstUnary(AstNode child,
                AstUnary.Operator operator)

Method Detail

getOperator

public AstUnary.Operator getOperator()

eval

public Object eval(Bindings bindings,
                   ELContext context)
            throws ELException

Specified by:

eval in class AstNode

Throws:

ELException

toString

public String toString()

Overrides:

toString in class Object

appendStructure

public void appendStructure(StringBuilder b,
                            Bindings bindings)

Specified by:

appendStructure in class AstNode

getCardinality

public int getCardinality()

Description copied from interface: Node

Get the node's number of children.

getChild

public AstNode getChild(int i)

Description copied from interface: Node

Get i'th child