net.sf.saxon.expr

Class GeneralComparison20

java.lang.Object

net.sf.saxon.expr.Expression

net.sf.saxon.expr.BinaryExpression

net.sf.saxon.expr.GeneralComparison

net.sf.saxon.expr.GeneralComparison20

All Implemented Interfaces:

SourceLocator, Callable, ComparisonExpression, IdentityComparable, InstructionInfo

public class GeneralComparison20
extends GeneralComparison

The class GeneralComparison20 specializes GeneralComparison for the case where the comparison is done with 2.0 semantics (i.e. with backwards compatibility off). It differs from the superclass in that it will never turn the expression into a GeneralComparison10, which could lead to non-terminating optimizations

Field Summary

Fields inherited from class net.sf.saxon.expr.GeneralComparison

comparer, comparisonCardinality, MANY_TO_MANY, MANY_TO_ONE, needsRuntimeCheck, ONE_TO_ONE, singletonOperator

Fields inherited from class net.sf.saxon.expr.BinaryExpression

operand0, operand1, operator

Fields inherited from class net.sf.saxon.expr.Expression

EFFECTIVE_BOOLEAN_VALUE, EVALUATE_METHOD, ITEM_FEED_METHOD, ITERATE_METHOD, locationId, MAX_SEQUENCE_LENGTH, MAX_STRING_LENGTH, PROCESS_METHOD, staticProperties, UNBOUNDED_LOWER, UNBOUNDED_UPPER, WATCH_METHOD

Constructor Summary

Constructors

Constructor and Description
GeneralComparison20(Expression p0, int op, Expression p1) Create a relational expression identifying the two operands and the operator

Method Summary

Methods

Modifier and Type	Method and Description
Expression	copy() Copy an expression.
ExpressionCompiler	getExpressionCompiler() Return the compiler of the GeneralComparison20 expression
protected GeneralComparison	getInverseComparison()

Methods inherited from class net.sf.saxon.expr.GeneralComparison

call, compare, computeCardinality, convertsUntypedToOther, effectiveBooleanValue, evaluateItem, evaluateManyToMany, explainExtraAttributes, getAtomicComparer, getComparisonCardinality, getCorrespondingSingletonOperator, getExpressionName, getItemType, getSingletonOperator, getStreamingAdjunct, needsRuntimeCheck, optimize, quickCompare, setAtomicComparer, setComparisonCardinality, setNeedsRuntimeCheck, simplify, typeCheck

Methods inherited from class net.sf.saxon.expr.BinaryExpression

computeSpecialProperties, displayOperator, equals, explain, getArguments, getOperands, getOperator, hashCode, isAssociative, isCommutative, isInverse, operands, promote, replaceOperand, setFlattened, toShortString, toString

Methods inherited from class net.sf.saxon.expr.Expression

addToPathMap, adoptChildExpression, checkForUpdatingSubexpressions, checkPermittedContents, clearStreamabilityData, computeDependencies, computeStaticProperties, doPromotion, dynamicError, evaluateAsString, evaluatePendingUpdates, explain, getCardinality, getColumnNumber, getConfiguration, getConstructType, getContainer, getDependencies, getEvaluationMethod, getHostLanguage, getImplementationMethod, getIntegerBounds, getIntrinsicDependencies, getLineNumber, getLocationId, getObjectName, getPosture, getProperties, getProperty, getPublicId, getSlotsUsed, getSpecialProperties, getStreamability, getSweep, getSystemId, hasVariableBinding, identityHashCode, implementsStaticTypeCheck, isIdentical, isSubtreeExpression, isUpdatingExpression, isVacuousExpression, iterate, iterateEvents, makeStreamingAdjunct, markTailFunctionCalls, operandList, process, resetLocalStaticProperties, setContainer, setEvaluationMethod, setFiltered, setLocationId, setPostureAndSweep, staticTypeCheck, suppressValidation, toPattern, toStreamingPattern, typeError, unordered

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface net.sf.saxon.expr.ComparisonExpression

getOperands

Constructor Detail

GeneralComparison20

public GeneralComparison20(Expression p0,
                   int op,
                   Expression p1)

Create a relational expression identifying the two operands and the operator

Parameters:

p0 - the left-hand operand

op - the operator, as a token returned by the Tokenizer (e.g. Token.LT)

p1 - the right-hand operand

Method Detail

copy

public Expression copy()

Copy an expression. This makes a deep copy.

Overrides:

copy in class GeneralComparison

Returns:

the copy of the original expression

getInverseComparison

protected GeneralComparison getInverseComparison()

Overrides:

getInverseComparison in class GeneralComparison

getExpressionCompiler

public ExpressionCompiler getExpressionCompiler()

Return the compiler of the GeneralComparison20 expression

Overrides:

getExpressionCompiler in class GeneralComparison

Returns:

the relevant ExpressionCompiler