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Posted to dev@uima.apache.org by "Marshall Schor (JIRA)" <de...@uima.apache.org> on 2014/03/03 20:22:24 UTC
[jira] [Created] (UIMA-3663) UimaConterxt_ImplBase code to generate
uniqueIdentifier may not be unique
Marshall Schor created UIMA-3663:
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Summary: UimaConterxt_ImplBase code to generate uniqueIdentifier may not be unique
Key: UIMA-3663
URL: https://issues.apache.org/jira/browse/UIMA-3663
Project: UIMA
Issue Type: Bug
Components: Core Java Framework
Affects Versions: 2.5.0SDK
Reporter: Marshall Schor
Assignee: Marshall Schor
Priority: Trivial
Fix For: 2.5.1SDK
Code in the construction of UimaConterxt_ImplBase calls UID() to get a unique id. One use is as a way to allow (for scaled-out apps) unique identification of otherwise similar MBeans, using different mbean names. MBean names cannot have colons or dashes. This code removes those from the string value returned by UID(). This means that 2 different UIDs that differ only in having some part have a minus sign, could be confused with another not having this. A small test case shows this can arise if > 32768 UIMA Contexts are created within one millisecond. While extremely unlikely, this is easily avoided, for example, by substituting _ for the characters, rather than deleting them.
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