Eric Wittmann created SRAMP-389:
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Summary: Performance issue in s-ramp client when using custom properties in
query results
Key: SRAMP-389
URL:
https://issues.jboss.org/browse/SRAMP-389
Project: S-RAMP
Issue Type: Bug
Security Level: Public (Everyone can see)
Affects Versions: 0.4.0 - Tomcat Support
Reporter: Eric Wittmann
Assignee: David virgil naranjo
Fix For: 0.5.0 - API Management
There is a feature in s-ramp queries where the client can request that each artifact
returned by a query also include a specific subset of the artifact's custom
properties. This is in addition to the standard set of meta-data that is always returned
when a query is performed.
We currently use this feature in the dtgov WorkflowQueryService class to return the
'query' and 'workflow' custom properties (so they can be displayed in the
UI list).
Getting these custom properties while processing the result set is very slow (see
ArtifactSummary::getCustomPropertyValue).
I haven't actually verified this, but I *believe* the reason this is slow is because a
new JAXB context is created for each ArtifactSummary in the query result list. Creating a
JAXB context is a heavy weight operation.
If this is truly the cause, we should try to share the JAXB context in some way. We need
to determine whether it is thread-safe, in which case we should have a single JAXB context
(singleton). If not, we should create it on a ThreadLocal.
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