Package net.sf.saxon.expr
Interface ComparisonExpression
- All Known Implementing Classes:
CompareToConstant
,CompareToIntegerConstant
,CompareToStringConstant
,GeneralComparison
,GeneralComparison20
,GeneralEqualityEE
,SwitchCaseComparison
,ValueComparison
public interface ComparisonExpression
Interface implemented by expressions that perform a comparison
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Method Summary
Modifier and TypeMethodDescriptionboolean
Determine whether untyped atomic values should be converted to the type of the other operandGet the AtomicComparer used to compare atomic values.getLhs()
Get the left-hand operand of the comparisonGet the left-hand expressiongetRhs()
Get the right-hand operand of the comparisonGet the right-hand expressionint
Get the primitive (singleton) operator used: one of Token.FEQ, Token.FNE, Token.FLT, Token.FGT, Token.FLE, Token.FGEGet the StringCollator used to compare string values.
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Method Details
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getAtomicComparer
AtomicComparer getAtomicComparer()Get the AtomicComparer used to compare atomic values. This encapsulates any collation that is used- Returns:
- the comparer
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getStringCollator
StringCollator getStringCollator()Get the StringCollator used to compare string values.- Returns:
- the collator. May return null if the expression will never be used to compare strings
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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
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getLhs
Operand getLhs()Get the left-hand operand of the comparison- Returns:
- the first operand
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getRhs
Operand getRhs()Get the right-hand operand of the comparison- Returns:
- the second operand
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getLhsExpression
Expression getLhsExpression()Get the left-hand expression- Returns:
- the first operand expression
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getRhsExpression
Expression getRhsExpression()Get the right-hand expression- Returns:
- the second operand expression
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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.
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