Full_Name: Howard Chu Version: 2.3, HEAD OS: URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (76.168.84.21) Submitted by: hyc

The dnSubtreeMatch, dnOneLevelMatch, dnSubordinateMatch, and dnSuperiorMatch matching rules added in OpenLDAP 2.3 can be used in extended filter clauses to get finer control over the scope of a search. Currently back-bdb/back-hdb don't do any indexing for extended filters, which can make these filters pretty expensive to evaluate.

But these specific rules can take advantage of the dn2id index, which already maintains all the necessary index information. If these extensions are going to be used frequently, we should add index support here.