net.sf.saxon.expr
Interface ComparisonExpression

All Superinterfaces:
Serializable
All Known Implementing Classes:
CompareToIntegerConstant, EquivalenceComparison, GeneralComparison, GeneralComparison20, GeneralComparisonEE, SingletonComparison, ValueComparison

public interface ComparisonExpression
extends Serializable

Interface implemented by expressions that perform a comparison


Method Summary
 boolean convertsUntypedToOther()
          Determine whether untyped atomic values should be converted to the type of the other operand
 AtomicComparer getAtomicComparer()
          Get the AtomicComparer used to compare atomic values.
 Expression[] getOperands()
          Get the two operands of the comparison
 int getSingletonOperator()
          Get the primitive (singleton) operator used: one of Token.FEQ, Token.FNE, Token.FLT, Token.FGT, Token.FLE, Token.FGE
 

Method Detail

getAtomicComparer

AtomicComparer getAtomicComparer()
Get the AtomicComparer used to compare atomic values. This encapsulates any collation that is used


getSingletonOperator

int getSingletonOperator()
Get the primitive (singleton) operator used: one of Token.FEQ, Token.FNE, Token.FLT, Token.FGT, Token.FLE, Token.FGE


getOperands

Expression[] getOperands()
Get the two operands of the comparison


convertsUntypedToOther

boolean convertsUntypedToOther()
Determine whether untyped atomic values should be converted to the type of the other operand

Returns:
true if untyped values should be converted to the type of the other operand, false if they should be converted to strings.


Copyright (c) 2004-2010 Saxonica Limited. All rights reserved.