de.odysseus.el.tree.impl.ast

Class AstUnary

java.lang.Object

de.odysseus.el.tree.impl.ast.AstNode

de.odysseus.el.tree.impl.ast.AstRightValue

de.odysseus.el.tree.impl.ast.AstUnary

All Implemented Interfaces:

ExpressionNode, Node

public final class AstUnary
extends AstRightValue

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	AstUnary.Operator

Field Summary

Fields

Modifier and Type	Field and Description
static AstUnary.Operator	EMPTY
static AstUnary.Operator	NEG
static AstUnary.Operator	NOT

Constructor Summary

Constructors

Constructor and Description
AstUnary(AstNode child, AstUnary.Operator operator)

Method Summary

Methods

Modifier and Type	Method and Description
void	appendStructure(java.lang.StringBuilder b, Bindings bindings)
java.lang.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()
java.lang.String	toString()

Methods inherited from class de.odysseus.el.tree.impl.ast.AstRightValue

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

Methods inherited from class de.odysseus.el.tree.impl.ast.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 java.lang.Object eval(Bindings bindings,
                    ELContext context)
                      throws ELException

Specified by:

eval in class AstNode

Throws:

ELException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

appendStructure

public void appendStructure(java.lang.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