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

java.lang.Object
  de.odysseus.el.tree.impl.ast.AstNode
      de.odysseus.el.tree.impl.ast.AstRightValue
          de.odysseus.el.tree.impl.ast.AstLiteral
              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