net.sf.saxon.expr

Interface ComparisonExpression

All Known Implementing Classes:

CompareToConstant, CompareToIntegerConstant, CompareToStringConstant, EquivalenceComparison, GeneralComparison, GeneralComparison20, GeneralComparisonEE, ValueComparison

public interface ComparisonExpression

Interface implemented by expressions that perform a comparison

Method Summary

Modifier and Type	Method and Description
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.
Operand	getLhs() Get the left-hand operand of the comparison
Expression	getLhsExpression() Get the left-hand expression
Operand	getRhs() Get the right-hand operand of the comparison
Expression	getRhsExpression() Get the right-hand expression
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

Returns:

the comparer

getSingletonOperator

int getSingletonOperator()

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

Returns:

the operator, as defined in class Token

getLhs

Operand getLhs()

Get the left-hand operand of the comparison

Returns:

the first operand

getRhs

Operand getRhs()

Get the right-hand operand of the comparison

Returns:

the second operand

getLhsExpression

Expression getLhsExpression()

Get the left-hand expression

Returns:

the first operand expression

getRhsExpression

Expression getRhsExpression()

Get the right-hand expression

Returns:

the second operand expression

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.