Bug #19
closed
Tracing of FLWOR expressions
100%
Description
SourceForge user: mhkay
The new 9.4 implementation of FLWOR expressions does not allow fine-grained tracing/monitoring at the clause level, which is problem for tools that implement a debugger. A patch (rather extensive) to fix this deficiency is being placed in Subversion. The patch introduces a new kind of FLWOR clause, the TraceClause, and a new method on the CodeInjector allowing TraceClauses to be injectied into a FLWOR pipeline; the TraceClause notifies the TraceListener of each tuple at run time, whether the pipeline is run in pull or push mode.
Updated by Anonymous over 12 years ago
SourceForge user: mhkay
A further patch has been added in Subversion revision 667 which makes namespace information available to a TraceListener when invoked at the level of a clause in a FLWOR expression. This is needed by one of the debuggers that operates with Saxon.
Updated by Anonymous about 12 years ago
SourceForge user: mhkay
The second patch, to provide namespace information to the trace listener, is incomplete in the version issued with 9.4.0.2. A new patch is therefore being raised which makes further changes to the TraceClause and ClauseInfo.
Updated by Michael Kay almost 12 years ago
- Status changed from Resolved to Closed
- % Done changed from 0 to 100
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