public class Reverser extends UnaryExpression
operand
locationId, staticProperties
EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD
Constructor and Description |
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Reverser(Expression base) |
Modifier and Type | Method and Description |
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int |
computeSpecialProperties()
Get the static properties of this expression (other than its type).
|
protected java.lang.String |
displayOperator(Configuration config)
Give a string representation of the operator for use in diagnostics
|
boolean |
effectiveBooleanValue(XPathContext context)
Get the effective boolean value of the expression.
|
SequenceIterator |
iterate(XPathContext context)
Return an Iterator to iterate over the values of a sequence.
|
Expression |
promote(PromotionOffer offer)
Promote this expression if possible
|
computeCardinality, display, equals, getBaseExpression, getItemType, hashCode, iterateSubExpressions, optimize, replaceSubExpression, simplify, typeCheck
adoptChildExpression, checkPermittedContents, computeDependencies, computeStaticProperties, doPromotion, dynamicError, evaluateAsString, evaluateItem, getCardinality, getColumnNumber, getConstructType, getDependencies, getExecutable, getHostLanguage, getImplementationMethod, getInstructionInfo, getIntrinsicDependencies, getLineNumber, getLocationId, getLocationProvider, getParentExpression, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, hasBadParentPointer, markTailFunctionCalls, process, resetStaticProperties, setLocationId, setParentExpression, setParentExpression, suppressValidation, typeError
public Reverser(Expression base)
public int computeSpecialProperties()
UnaryExpression
computeSpecialProperties
in class UnaryExpression
public Expression promote(PromotionOffer offer) throws XPathException
promote
in interface Expression
promote
in class UnaryExpression
offer
- details of the offer, for example the offer to move
expressions that don't depend on the context to an outer level in
the containing expressionXPathException
- if any error is detectedpublic SequenceIterator iterate(XPathContext context) throws XPathException
ComputedExpression
iterate
in interface Expression
iterate
in class ComputedExpression
context
- supplies the context for evaluationXPathException
- if any dynamic error occurs evaluating the
expressionpublic boolean effectiveBooleanValue(XPathContext context) throws XPathException
ComputedExpression
effectiveBooleanValue
in interface Expression
effectiveBooleanValue
in class ComputedExpression
context
- The context in which the expression is to be evaluatedXPathException
- if any dynamic error occurs evaluating the
expressionprotected java.lang.String displayOperator(Configuration config)
displayOperator
in class UnaryExpression
config
-