Package 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:

ComparisonExpression, ExportAgent, Locatable, IdentityComparable, Traceable

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

Nested Class Summary

Nested classes/interfaces inherited from class net.sf.saxon.expr.GeneralComparison

GeneralComparison.ComparisonCardinality

Field Summary

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

comparer, comparisonCardinality, doneWarnings, runtimeCheckNeeded, singletonOperator

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

operator

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

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

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
Expression	copy(RebindingMap rebindings)	Copy an expression.
protected GeneralComparison	getInverseComparison()

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

compare, computeCardinality, computeHashCode, convertsUntypedToOther, effectiveBooleanValue, equals, evaluateItem, evaluateManyToMany, explainExtraAttributes, getAtomicComparer, getComparisonCardinality, getCorrespondingSingletonOperator, getExpressionName, getIntrinsicDependencies, getItemType, getNamespaceResolver, getSingletonOperator, getStaticUType, getStreamerName, needsRuntimeCheck, optimize, setAtomicComparer, setComparisonCardinality, setNeedsRuntimeCheck, tag, typeCheck

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

computeSpecialProperties, displayOperator, export, getImplementationMethod, getLhs, getLhsExpression, getOperandRole, getOperator, getRhs, getRhsExpression, isAssociative, isCommutative, isInverse, operands, setFlattened, setLhsExpression, setRhsExpression, toShortString, toString

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

addToPathMap, adoptChildExpression, allowExtractingCommonSubexpressions, checkedOperands, checkForUpdatingSubexpressions, checkPermittedContents, computeDependencies, computeStaticProperties, dynamicError, evaluateAsString, evaluatePendingUpdates, explain, getCardinality, getConfiguration, getCost, getDependencies, getEvaluationMethod, getExtraProperty, getIntegerBounds, getInterpretedExpression, getLocalRetainedStaticContext, getLocation, getNetCost, getObjectName, getPackageData, getParentExpression, getProperties, getProperty, getRetainedStaticContext, getScopingExpression, getSlotsUsed, getSpecialProperties, getStaticBaseURI, getStaticBaseURIString, getStaticType, getTracingTag, hasCompatibleStaticContext, hashCode, hasSpecialProperty, hasVariableBinding, identityHashCode, implementsStaticTypeCheck, isCallOn, isEqual, isIdentical, isInstruction, isLiftable, isMultiThreaded, isStaticPropertiesKnown, isSubtreeExpression, isUpdatingExpression, isVacuousExpression, iterate, markTailFunctionCalls, operandList, operandSparseList, optimizeChildren, prepareForStreaming, process, resetLocalStaticProperties, restoreParentPointers, setEvaluationMethod, setExtraProperty, setFiltered, setLocation, setParentExpression, setRetainedStaticContext, setRetainedStaticContextLocally, setRetainedStaticContextThoroughly, setStaticProperty, simplify, simplifyChildren, staticTypeCheck, suppressValidation, toPattern, typeCheckChildren, typeError, unordered, verifyParentPointers

Methods inherited from class java.lang.Object

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

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

getLhs, getLhsExpression, getRhs, getRhsExpression

Methods inherited from interface net.sf.saxon.trace.Traceable

gatherProperties

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(RebindingMap rebindings)

Copy an expression. This makes a deep copy.

Specified by:

copy in class Expression

Parameters:

rebindings - variables that must be re-bound

Returns:

the copy of the original expression

getInverseComparison

protected GeneralComparison getInverseComparison()

Overrides:

getInverseComparison in class GeneralComparison