bboss.org.apache.velocity.runtime.parser.node

Class ASTEQNode

java.lang.Object

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

bboss.org.apache.velocity.runtime.parser.node.ASTEQNode

All Implemented Interfaces:

Node, Renderable

public class ASTEQNode
extends SimpleNode

Handles arg1 == arg2 This operator requires that the LHS and RHS are both of the same Class OR both are subclasses of java.lang.Number

Field Summary

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

children, first, id, info, invalid, last, log, parent, parser, rsvc, state, templateName

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
boolean	evaluate(InternalContextAdapter context) Calculates the value of the logical expression arg1 == arg2 All class types are supported.
java.lang.Object	jjtAccept(ParserVisitor visitor, java.lang.Object data)
java.lang.Object	value(InternalContextAdapter context)

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

childrenAccept, dump, execute, getChildren, getColumn, getFirstToken, getInfo, getLastToken, getLine, getLocation, getRuntimeServices, getTemplateName, getType, init, isInvalid, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, literal, render, setFirstToken, setInfo, setInvalid, toString, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ASTEQNode

public ASTEQNode(int id)

Parameters:

id -

ASTEQNode

public ASTEQNode(Parser p,
                 int id)

Parameters:

p -

id -

Method Detail

jjtAccept

public java.lang.Object jjtAccept(ParserVisitor visitor,
                                  java.lang.Object data)

Specified by:

jjtAccept in interface Node

Overrides:

jjtAccept in class SimpleNode

Returns:

The Node execution result object.

See Also:

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

evaluate

public boolean evaluate(InternalContextAdapter context)
                 throws MethodInvocationException

Calculates the value of the logical expression arg1 == arg2 All class types are supported. Uses equals() to determine equivalence. This should work as we represent with the types we already support, and anything else that implements equals() to mean more than identical references.

Specified by:

evaluate in interface Node

Overrides:

evaluate in class SimpleNode

Parameters:

context - internal context used to evaluate the LHS and RHS

Returns:

true if equivalent, false if not equivalent, false if not compatible arguments, or false if either LHS or RHS is null

Throws:

MethodInvocationException

See Also:

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

value

public java.lang.Object value(InternalContextAdapter context)
                       throws MethodInvocationException

Specified by:

value in interface Node

Overrides:

value in class SimpleNode

Returns:

The node value.

Throws:

MethodInvocationException

See Also:

SimpleNode.value(bboss.org.apache.velocity.context.InternalContextAdapter)