Minor refactoring of SPSDescriptor
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Key: DERBY-4918
URL: https://issues.apache.org/jira/browse/DERBY-4918
Project: Derby
Issue Type: Improvement
Components: SQL
Affects Versions: 10.8.0.0
Reporter: Kristian Waagan
Assignee: Kristian Waagan
Priority: Minor
The class SPSDescriptor is kind of hard to understand, and doesn't quite follow
the pattern used by other tuple descriptors. Parts of the code don't agree with
the documentation (i.e. SPS_TYPE_TRIGGER marked as not implemented)
This issue tracks work to make the class easier to understand and to modify.
The critical part that may need to be changed is the use of synchronized
(this). The problem is that database locks are obtained within the critical
regions, and in some special cases this causes deadlocks. I'm not yet certain
this can be fixed at this level (only), but I'll continue investigation.
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