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From "Christoph Kiehl (JIRA)" <j...@apache.org>
Subject [jira] Created: (JCR-1066) Exclude system index for queries that restrict the result set to nodetypes not availble in the "jcr:system" subtree
Date Thu, 16 Aug 2007 15:37:30 GMT
Exclude system index for queries that restrict the result set to nodetypes not availble in
the "jcr:system" subtree
-------------------------------------------------------------------------------------------------------------------

                 Key: JCR-1066
                 URL: https://issues.apache.org/jira/browse/JCR-1066
             Project: Jackrabbit
          Issue Type: Improvement
          Components: query
            Reporter: Christoph Kiehl
            Assignee: Christoph Kiehl
            Priority: Minor
             Fix For: 1.4


We already have code that is able to decide whether the system index needs to be included
in a search or not (see JCR-967). If I execute a query like "my:app//element(*, my:doc)" this
will only search the workspace index. Unfortunately this is slower than "//element(*, my:doc)",
since the first query can not be optimized as the second. In our case both queries return
the same result set because we use application specific node types. Even though the second
query includes the system index it is still faster than the first one. But it could be even
faster because it doesn't need to search the system index because nodes with the application
specific node type can't be added to the "jcr:system"-tree and are therefore are added never
to the system index (am I right?).

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