com.novell.xml.xpath
Class BinaryExpr

java.lang.Object
  com.novell.xml.xpath.BinaryExpr

All Implemented Interfaces:

Expression

Direct Known Subclasses:

BooleanExpr, NumberExpr, UnionExpr

public abstract class BinaryExpr

extends Object

implements Expression

Base class for binary operand expressions.

Field Summary

protected Expression	lhs
protected Expression	rhs

Constructor Summary

protected

BinaryExpr(Expression lhs, Expression rhs) Construct the binary expression.

Method Summary

void	dump(PrintWriter writer, int indent) Print the expression in a readable form for debugging.
boolean	isConstant() Return true if the expression is a constant value.
void	registerForReset(XPathResetRegistrar registrar) Register this expression or any subexpression that implements XPathResetCache with an object that wants to call resetCache()

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.novell.xml.xpath.Expression

evaluate, getResultType

Field Detail

lhs

protected Expression lhs

rhs

protected Expression rhs

Constructor Detail

BinaryExpr

protected BinaryExpr(Expression lhs,
                     Expression rhs)

Construct the binary expression.

Parameters:

lhs - The left hand operand.

rhs - The right-hand operand.

Method Detail

isConstant

public boolean isConstant()

Return true if the expression is a constant value.

Specified by:

isConstant in interface Expression

Returns:

True is expression is constant, false otherwise.

registerForReset

public void registerForReset(XPathResetRegistrar registrar)

Register this expression or any subexpression that implements XPathResetCache with an object that wants to call resetCache()

Specified by:

registerForReset in interface Expression

dump

public void dump(PrintWriter writer,
                 int indent)

Print the expression in a readable form for debugging.

Specified by:

dump in interface Expression

Parameters:

writer - The output device.

indent - Number of tabs to indent the result.