de.odysseus.el.tree.impl.ast
Class AstNull

java.lang.Object
  extended by de.odysseus.el.tree.impl.ast.AstNode
      extended by de.odysseus.el.tree.impl.ast.AstRightValue
          extended by de.odysseus.el.tree.impl.ast.AstLiteral
              extended by de.odysseus.el.tree.impl.ast.AstNull
All Implemented Interfaces:
ExpressionNode, Node

public final class AstNull
extends AstLiteral


Constructor Summary
AstNull()
           
 
Method Summary
 void appendStructure(java.lang.StringBuilder b, Bindings bindings)
           
 java.lang.Object eval(Bindings bindings, ELContext context)
           
 java.lang.String toString()
           
 
Methods inherited from class de.odysseus.el.tree.impl.ast.AstLiteral
getCardinality, getChild
 
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
 

Constructor Detail

AstNull

public AstNull()
Method Detail

eval

public java.lang.Object eval(Bindings bindings,
                             ELContext context)
Specified by:
eval in class AstNode

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

Copyright © 2006-2009 Odysseus Software GmbH.