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Posted to dev@jena.apache.org by "Andy Seaborne (JIRA)" <ji...@apache.org> on 2011/07/18 10:18:59 UTC
[jira] [Created] (JENA-81) Partial failure to see prefixes in
persistent storage
Partial failure to see prefixes in persistent storage
-----------------------------------------------------
Key: JENA-81
URL: https://issues.apache.org/jira/browse/JENA-81
Project: Jena
Issue Type: Bug
Components: Jena, TDB
Reporter: Andy Seaborne
PrefixMappingImpl only looks in its local data structures to service findMapping. findMapping is private.
But calls to get() are used to cache prefixes from persistent store so a findmMappign call before touching a prefix wil casuse findMapping not to find it.
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[jira] [Resolved] (JENA-81) Partial failure to see prefixes in
persistent storage
Posted by "Andy Seaborne (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/JENA-81?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andy Seaborne resolved JENA-81.
-------------------------------
Resolution: Fixed
Assignee: Andy Seaborne
The workaround seems satisfactory - it merely does the caching easily. But the caching is likely to happen anyway so any risk of very, very large prefix maps using too much memory is not increased significantly.
> Partial failure to see prefixes in persistent storage
> -----------------------------------------------------
>
> Key: JENA-81
> URL: https://issues.apache.org/jira/browse/JENA-81
> Project: Jena
> Issue Type: Bug
> Components: Jena, TDB
> Reporter: Andy Seaborne
> Assignee: Andy Seaborne
> Priority: Minor
> Attachments: Report_Prefixes.java
>
>
> PrefixMappingImpl only looks in its local data structures to service findMapping. findMapping is private.
> But calls to get() are used to cache prefixes from persistent store so a findmMappign call before touching a prefix wil casuse findMapping not to find it.
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[jira] [Commented] (JENA-81) Partial failure to see prefixes in
persistent storage
Posted by "Andy Seaborne (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/JENA-81?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13066850#comment-13066850 ]
Andy Seaborne commented on JENA-81:
-----------------------------------
Possible fixes:
1/ Write a PrefixMapping implementation that is persistent storage friendly.
2/ When creating a graph object in TDB, flush all prefixes in the PrefixMappingImpl cache.
(2) is a TDB-specific and has been applied to DatasetPrefixesTDB. However, it is potential unnecessary work.
> Partial failure to see prefixes in persistent storage
> -----------------------------------------------------
>
> Key: JENA-81
> URL: https://issues.apache.org/jira/browse/JENA-81
> Project: Jena
> Issue Type: Bug
> Components: Jena, TDB
> Reporter: Andy Seaborne
> Attachments: Report_Prefixes.java
>
>
> PrefixMappingImpl only looks in its local data structures to service findMapping. findMapping is private.
> But calls to get() are used to cache prefixes from persistent store so a findmMappign call before touching a prefix wil casuse findMapping not to find it.
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[jira] [Closed] (JENA-81) Partial failure to see prefixes in
persistent storage
Posted by "Andy Seaborne (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/JENA-81?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andy Seaborne closed JENA-81.
-----------------------------
> Partial failure to see prefixes in persistent storage
> -----------------------------------------------------
>
> Key: JENA-81
> URL: https://issues.apache.org/jira/browse/JENA-81
> Project: Jena
> Issue Type: Bug
> Components: Jena, TDB
> Reporter: Andy Seaborne
> Assignee: Andy Seaborne
> Priority: Minor
> Attachments: Report_Prefixes.java
>
>
> PrefixMappingImpl only looks in its local data structures to service findMapping. findMapping is private.
> But calls to get() are used to cache prefixes from persistent store so a findmMappign call before touching a prefix wil casuse findMapping not to find it.
--
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For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Updated] (JENA-81) Partial failure to see prefixes in
persistent storage
Posted by "Andy Seaborne (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/JENA-81?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andy Seaborne updated JENA-81:
------------------------------
Attachment: Report_Prefixes.java
Test case - active the m.getNsPrefixMap() call to see the difference (TDB 0.8.10).
> Partial failure to see prefixes in persistent storage
> -----------------------------------------------------
>
> Key: JENA-81
> URL: https://issues.apache.org/jira/browse/JENA-81
> Project: Jena
> Issue Type: Bug
> Components: Jena, TDB
> Reporter: Andy Seaborne
> Attachments: Report_Prefixes.java
>
>
> PrefixMappingImpl only looks in its local data structures to service findMapping. findMapping is private.
> But calls to get() are used to cache prefixes from persistent store so a findmMappign call before touching a prefix wil casuse findMapping not to find it.
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Updated] (JENA-81) Partial failure to see prefixes in
persistent storage
Posted by "Andy Seaborne (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/JENA-81?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andy Seaborne updated JENA-81:
------------------------------
Priority: Minor (was: Major)
Priority "minor" because a workaround has been applied.
> Partial failure to see prefixes in persistent storage
> -----------------------------------------------------
>
> Key: JENA-81
> URL: https://issues.apache.org/jira/browse/JENA-81
> Project: Jena
> Issue Type: Bug
> Components: Jena, TDB
> Reporter: Andy Seaborne
> Priority: Minor
> Attachments: Report_Prefixes.java
>
>
> PrefixMappingImpl only looks in its local data structures to service findMapping. findMapping is private.
> But calls to get() are used to cache prefixes from persistent store so a findmMappign call before touching a prefix wil casuse findMapping not to find it.
--
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