public class Trace extends SystemFunction
Modifier and Type | Class and Description |
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class |
Trace.TracingIterator
Tracing Iterator class
|
Modifier and Type | Field and Description |
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(package private) NamespaceResolver |
resolver |
operation
argument
locationId, staticProperties
EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD
Constructor and Description |
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Trace() |
Modifier and Type | Method and Description |
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int |
computeCardinality()
Get the static cardinality
|
int |
computeSpecialProperties()
Get the static properties of this expression (other than its type).
|
Item |
evaluateItem(XPathContext context)
Evaluate the function
|
SequenceIterator |
iterate(XPathContext context)
Iterate over the results of the function
|
Expression |
preEvaluate(StaticContext env)
preEvaluate: this method suppresses compile-time evaluation by doing nothing
|
Expression |
simplify(StaticContext env)
Simplify the function call.
|
addContextDocumentArgument, checkArguments, display, getDetails, getErrorCodeForTypeErrors, getItemType, getRequiredType, main, makeSystemFunction, setDetails, useContextItemAsDefault
checkArgumentCount, getDisplayName, getFunctionNameCode, getNumberOfArguments, iterateSubExpressions, optimize, promote, setArguments, setFunctionNameCode, simplifyArguments, typeCheck
adoptChildExpression, checkPermittedContents, computeDependencies, computeStaticProperties, doPromotion, dynamicError, dynamicError, effectiveBooleanValue, evaluateAsString, getCardinality, getColumnNumber, getConstructType, getDependencies, getExecutable, getHostLanguage, getImplementationMethod, getInstructionInfo, getIntrinsicDependencies, getLineNumber, getLocationId, getLocationProvider, getParentExpression, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, hasBadParentPointer, markTailFunctionCalls, process, resetStaticProperties, setLocationId, setParentExpression, suppressValidation, typeError, typeError
NamespaceResolver resolver
public Expression simplify(StaticContext env) throws XPathException
simplify
in interface Expression
simplify
in class FunctionCall
XPathException
- if an error is discovered during expression
rewritingpublic Expression preEvaluate(StaticContext env)
preEvaluate
in class FunctionCall
public int computeSpecialProperties()
computeSpecialProperties
in class SystemFunction
public int computeCardinality()
computeCardinality
in class SystemFunction
public Item evaluateItem(XPathContext context) throws XPathException
evaluateItem
in interface Expression
evaluateItem
in class ComputedExpression
context
- The context in which the expression is to be evaluatedXPathException
- if any dynamic error occurs evaluating the
expressionpublic SequenceIterator iterate(XPathContext context) throws XPathException
iterate
in interface Expression
iterate
in class ComputedExpression
context
- supplies the context for evaluationXPathException
- if any dynamic error occurs evaluating the
expression