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Bug #4182

closed

No trace execution point around main XQuery body expression

Added by Michael Kay over 3 years ago. Updated over 3 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Category:
Diagnostics
Sprint/Milestone:
-
Start date:
2019-03-27
Due date:
% Done:

100%

Estimated time:
Legacy ID:
Applies to branch:
9.9, trunk
Fix Committed on Branch:
9.9, trunk
Fixed in Maintenance Release:
Platforms:

Description

When trace code is injected into a query during query compilation, trace instructions are injected at strategic points, e.g. round expressions that construct new nodes, around the body of a function, around the branches of a conditional, etc. This is designed to enable a useful level of tracing if the injected code is used to trace execution.

There is no trace point around the main expression of a query, which makes things difficult for certain kinds of tracing application, e.g. one that wants to instrument timings or monitor code coverage.

This is being fixed by adding a new trace point with locationKind = XQUERY_BODY. The effect is that when a query is run with the -T option, there is an extra wrapper element around the entire trace output.

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