org.apache.velocity.runtime.parser.node

Class ASTOrNode

java.lang.Object

org.apache.velocity.runtime.parser.node.SimpleNode

org.apache.velocity.runtime.parser.node.ASTBinaryOperator

org.apache.velocity.runtime.parser.node.ASTLogicalOperator

org.apache.velocity.runtime.parser.node.ASTOrNode

All Implemented Interfaces:

Node, Renderable

public class ASTOrNode
extends ASTLogicalOperator

Please look at the Parser.jjt file which is what controls the generation of this class.

Version:

$Id$

Author:

Jason van Zyl, Geir Magnusson Jr.

Field Summary

Fields inherited from class org.apache.velocity.runtime.parser.node.SimpleNode

children, column, first, firstImage, id, info, invalid, last, lastImage, line, literal, log, parent, parser, rsvc, state, template

Constructor Summary

Constructors

Constructor and Description
ASTOrNode(int id)
ASTOrNode(Parser p, int id)

Method Summary

Modifier and Type	Method and Description
boolean	evaluate(InternalContextAdapter context) the logical or :
String	getLiteralOperator() get the string representing the mathematical operator
Object	jjtAccept(ParserVisitor visitor, Object data)
Object	value(InternalContextAdapter context) Returns the value of the expression.

Methods inherited from class org.apache.velocity.runtime.parser.node.ASTLogicalOperator

init

Methods inherited from class org.apache.velocity.runtime.parser.node.ASTBinaryOperator

literal

Methods inherited from class org.apache.velocity.runtime.parser.node.SimpleNode

childrenAccept, cleanupParserAndTokens, dump, dump, dump, execute, getColumn, getFirstToken, getFirstTokenImage, getInfo, getLastToken, getLastTokenImage, getLine, getLocation, getParser, getRuntimeServices, getTemplate, getTemplateName, getType, isInvalid, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, render, saveTokenImages, setFirstToken, setInfo, setInvalid, toString, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ASTOrNode

public ASTOrNode(int id)

Parameters:

id -

ASTOrNode

public ASTOrNode(Parser p,
                 int id)

Parameters:

p -

id -

Method Detail

getLiteralOperator

public String getLiteralOperator()

Description copied from class: ASTBinaryOperator

get the string representing the mathematical operator

Specified by:

getLiteralOperator in class ASTBinaryOperator

Returns:

operator string

jjtAccept

public Object jjtAccept(ParserVisitor visitor,
                        Object data)

Specified by:

jjtAccept in interface Node

Overrides:

jjtAccept in class SimpleNode

Returns:

The Node execution result object.

See Also:

SimpleNode.jjtAccept(org.apache.velocity.runtime.parser.node.ParserVisitor, java.lang.Object)

value

public Object value(InternalContextAdapter context)
             throws MethodInvocationException

Returns the value of the expression. Since the value of the expression is simply the boolean result of evaluate(), lets return that.

Specified by:

value in interface Node

Overrides:

value in class SimpleNode

Parameters:

context -

Returns:

The Expression value.

Throws:

MethodInvocationException

See Also:

Node.value(org.apache.velocity.context.InternalContextAdapter)

evaluate

public boolean evaluate(InternalContextAdapter context)
                 throws MethodInvocationException

the logical or :

      left || null -> left
      null || right -> right
      null || null -> false
      left || right ->  left || right
    

Specified by:

evaluate in interface Node

Overrides:

evaluate in class SimpleNode

Parameters:

context -

Returns:

The evaluation result.

Throws:

MethodInvocationException

See Also:

Node.evaluate(org.apache.velocity.context.InternalContextAdapter)