Package net.sf.saxon.trace

Class TimingCodeInjector

java.lang.Object

net.sf.saxon.trace.TraceCodeInjector

net.sf.saxon.trace.TimingCodeInjector

All Implemented Interfaces:

CodeInjector

public class TimingCodeInjector
extends TraceCodeInjector

A code injector that wraps the body of a template or function in a TraceExpression, which causes the TimingTraceListener to be notified at the start and end of the function/template evaluation

Constructor Summary

Constructors

Constructor	Description
TimingCodeInjector()

Method Summary

Modifier and Type	Method	Description
Expression	inject(Expression exp, StaticContext env, int construct, StructuredQName qName)	If tracing, wrap an expression in a trace instruction
Clause	injectClause(Clause target, StaticContext env, Container container)	If tracing, add a clause to a FLWOR expression that can be used to monitor requests for tuples to be processed

Methods inherited from class java.lang.Object

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

Constructor Detail

TimingCodeInjector

public TimingCodeInjector()

Method Detail

inject

public Expression inject(Expression exp,
                         StaticContext env,
                         int construct,
                         StructuredQName qName)

If tracing, wrap an expression in a trace instruction

Specified by:

inject in interface CodeInjector

Overrides:

inject in class TraceCodeInjector

Parameters:

exp - the expression to be wrapped

env - the static context

construct - integer constant identifying the kind of construct

qName - the name of the construct (if applicable)

Returns:

the expression that does the tracing

injectClause

public Clause injectClause(Clause target,
                           StaticContext env,
                           Container container)

If tracing, add a clause to a FLWOR expression that can be used to monitor requests for tuples to be processed

Specified by:

injectClause in interface CodeInjector

Overrides:

injectClause in class TraceCodeInjector

Parameters:

target - the clause whose evaluation is to be traced (or otherwise monitored)

env -

container - the container of the containing FLWORExpression @return the new clause to do the tracing; or null if no tracing is required at this point