Exclude system index for queries that restrict the result set to nodetypes not
availble in the "jcr:system" subtree
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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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