[ https://issues.apache.org/jira/browse/OAK-2926?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14580259#comment-14580259 ]
Thomas Mueller commented on OAK-2926: ------------------------------------- https://svn.apache.org/r1684607 (1.0 branch - undo version change in package-info.java) > Fast result size estimate > ------------------------- > > Key: OAK-2926 > URL: https://issues.apache.org/jira/browse/OAK-2926 > Project: Jackrabbit Oak > Issue Type: New Feature > Components: query > Reporter: Thomas Mueller > Assignee: Thomas Mueller > Labels: performance > Fix For: 1.3.1, 1.2.3, 1.0.15 > > Attachments: OAK-2926-b-1.0.patch, OAK-2926-b-1.2.patch, > OAK-2926-b.patch, OAK-2926-c.patch, OAK-2926.patch > > > When asking for the correct result size of a query, the complete result needs > to be read, so that access rights checks are made, and (unless the index is > known to be up-to-date, and can process all conditions) so that the existence > and all query conditions are checked. > Jackrabbit 2.x supports a fast way to get an estimate of the result size, > without doing access rights checks. See also JCR-3858. > Please note that according to the JCR API, NodeIterator.getSize() may return > -1 (for "unknown"), and in Oak this is currently done if counting is slow. > This would also need to be disabled if a fast result size estimate is needed. -- This message was sent by Atlassian JIRA (v6.3.4#6332)