Package org.apache.velocity.runtime.parser.node

Class ASTEQNode

java.lang.Object

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

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

org.apache.velocity.runtime.parser.node.ASTComparisonNode

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

All Implemented Interfaces:

Cloneable, Node, Renderable

Direct Known Subclasses:

ASTNENode

public class ASTEQNode
extends ASTComparisonNode

Handles arg1 == arg2 This operator requires that the LHS and RHS are both of the same Class, both numbers or both coerce-able to strings.

Author:

Will Glass-Husain, Peter Romianowski, Nathan Bubna

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

Method Summary

Modifier and Type	Method	Description
boolean	compareNonNumber(Object left, Object right)
boolean	compareNull(Object left, Object right)	Always false by default, != and == subclasses must override this.
String	getLiteralOperator()	get the string representing the mathematical operator
boolean	numberTest(int compareResult)	performs the actual comparison

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

compareNumbers, evaluate, jjtAccept, value

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

init, literal

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

childrenAccept, cleanupParserAndTokens, clone, clone, 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 Details

ASTEQNode

public ASTEQNode(int id)

ASTEQNode

public ASTEQNode(Parser p,
 int id)

Method Details

compareNull

public boolean compareNull(Object left,
 Object right)

Description copied from class: ASTComparisonNode

Always false by default, != and == subclasses must override this.

Overrides:

compareNull in class ASTComparisonNode

Parameters:

left -

right -

Returns:

comparison result

getLiteralOperator

public String getLiteralOperator()

Description copied from class: ASTComparisonNode

get the string representing the mathematical operator

Specified by:

getLiteralOperator in class ASTComparisonNode

Returns:

operator string

numberTest

public boolean numberTest(int compareResult)

Description copied from class: ASTComparisonNode

performs the actual comparison

Specified by:

numberTest in class ASTComparisonNode

Parameters:

compareResult -

Returns:

comparison result

compareNonNumber

public boolean compareNonNumber(Object left,
 Object right)

Overrides:

compareNonNumber in class ASTComparisonNode