TraceInstruction

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

All Implemented Interfaces:

java.io.Serializable, javax.xml.transform.SourceLocator, LocationProvider, SaxonLocator, EvaluableItem, SequenceIterable, TailCallReturner, InstructionInfo, org.xml.sax.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, ITERATE_METHOD, locationId, PROCESS_METHOD, staticProperties
- Constructor Summary
  
  Constructors
  Constructor Description
  
  TraceInstruction(Expression child, InstructionInfo details)
  Create a Trace instruction
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  InstructionInfo getInstructionInfo()
  Get the instruction details
  - Methods inherited from class net.sf.saxon.expr.Expression
    addToPathMap, adoptChildExpression, checkForUpdatingSubexpressions, checkPermittedContents, computeStaticProperties, display, doPromotion, dynamicError, effectiveBooleanValue, evaluatePendingUpdates, explain, findParentOf, getColumnNumber, getColumnNumber, getContainer, getExecutable, getHostLanguage, getIntrinsicDependencies, getLineNumber, getLineNumber, getLocationId, getLocationProvider, getObjectName, getProperties, getProperty, getPublicId, getSlotsUsed, getSpecialProperties, getSystemId, getSystemId, hasLoopingSubexpression, implementsStaticTypeCheck, isUpdatingExpression, iterateEvents, markTailFunctionCalls, resetLocalStaticProperties, setContainer, setFiltered, setFlattened, setLocationId, staticTypeCheck, suppressValidation, toString, typeError
  - Methods inherited from class net.sf.saxon.instruct.Instruction
    assembleParams, assembleTunnelParams, computeCardinality, computeSpecialProperties, dynamicError, evaluateAsString, getConstructType, getImplementationMethod, getSourceLocator, isXSLT, process, promoteInst
  - 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
  - Methods inherited from class net.sf.saxon.instruct.TraceWrapper
    computeDependencies, copy, createsNewNodes, evaluateItem, explain, getCardinality, getDependencies, getInstructionNameCode, getItemType, iterate, iterateSubExpressions, optimize, processLeavingTail, promote, replaceSubExpression, simplify, typeCheck

Constructors
Constructor	Description
`TraceInstruction(Expression child, InstructionInfo details)`	Create a Trace instruction

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`InstructionInfo`	`getInstructionInfo()`	Get the instruction details

- 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)

Class TraceInstruction

Field Summary

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

Constructor Summary

Method Summary

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

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

Methods inherited from class java.lang.Object

Methods inherited from interface javax.xml.transform.SourceLocator

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

Constructor Detail

TraceInstruction

Method Detail

getInstructionInfo