net.sf.saxon.expr.instruct
Class TraceInstruction

java.lang.Object
  net.sf.saxon.expr.Expression
      net.sf.saxon.expr.instruct.Instruction
          net.sf.saxon.expr.instruct.TraceWrapper
              net.sf.saxon.expr.instruct.TraceInstruction

All Implemented Interfaces:

Serializable, SourceLocator, LocationProvider, SaxonLocator, EvaluableItem, TailCallReturner, SequenceIterable, InstructionInfo, Locator

public class TraceInstruction
extends TraceWrapper

A run-time instruction which wraps a real instruction and traces its entry and exit to the TraceListener

See Also:

Serialized Form

Field Summary

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

EVALUATE_METHOD, EVENT_FEED_METHOD, ITEM_FEED_METHOD, ITERATE_METHOD, locationId, PROCESS_METHOD, PUSH_SELECTION, staticProperties, WATCH_METHOD

Constructor Summary

TraceInstruction(Expression child, InstructionInfo details)
Create a Trace instruction

Method Summary

Expression	copy() Copy an expression.
InstructionInfo	getInstructionInfo() Get the instruction details

Methods inherited from class net.sf.saxon.expr.instruct.TraceWrapper

checkForUpdatingSubexpressions, computeDependencies, createsNewNodes, evaluateItem, evaluatePendingUpdates, explain, getCardinality, getDependencies, getImplementationMethod, getInstructionNameCode, getItemType, isUpdatingExpression, isVacuousExpression, iterate, iterateSubExpressions, optimize, processLeavingTail, promote, replaceSubExpression, simplify, typeCheck

Methods inherited from class net.sf.saxon.expr.instruct.Instruction

assembleParams, assembleTunnelParams, computeCardinality, computeSpecialProperties, dynamicError, evaluateAsString, getConstructType, getExpressionName, getInstructionName, getIteratorFromProcessMethod, getSourceLocator, isXSLT, process, promoteInst

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

addToPathMap, adoptChildExpression, checkPermittedContents, computeStaticProperties, doPromotion, dynamicError, effectiveBooleanValue, explain, getColumnNumber, getColumnNumber, getContainer, getEvaluationMethod, getExecutable, getHostLanguage, getIntrinsicDependencies, getLineNumber, getLineNumber, getLocationId, getLocationProvider, getObjectName, getProperties, getProperty, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, getSystemId, hasLoopingSubexpression, implementsStaticTypeCheck, isSubtreeExpression, iterateEvents, iterateSameFocusSubExpressions, markTailFunctionCalls, resetLocalStaticProperties, setContainer, setEvaluationMethod, setFiltered, setFlattened, setLocationId, staticTypeCheck, suppressValidation, toString, typeError

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface javax.xml.transform.SourceLocator

getColumnNumber, getLineNumber, getPublicId, getSystemId

Constructor Detail

TraceInstruction

public TraceInstruction(Expression child,
                        InstructionInfo details)

Create a Trace instruction

Parameters:

child - the child instruction to be evaluated

details - the details to be output. This will usually relate to a function or template header.

Method Detail

getInstructionInfo

public InstructionInfo getInstructionInfo()

Get the instruction details

Overrides:

getInstructionInfo in class TraceWrapper

Returns:

the details of the child instruction (the instruction being traced)

copy

public Expression copy()

Description copied from class: TraceWrapper

Copy an expression. This makes a deep copy.

Overrides:

copy in class TraceWrapper

Returns:

the copy of the original expression