slapo-valsort(5) — Linux manual page


SLAPO-VALSORT(5)           File Formats Manual          SLAPO-VALSORT(5)

NAME         top

       slapo-valsort - Value Sorting overlay to slapd

SYNOPSIS         top


DESCRIPTION         top

       The Value Sorting overlay can be used with a backend database to
       sort the values of specific multi-valued attributes within a
       subtree. The sorting occurs whenever the attributes are returned
       in a search response.

       Sorting can be specified in ascending or descending order, using
       either numeric or alphanumeric sort methods. Additionally, a
       "weighted" sort can be specified, which uses a numeric weight
       prepended to the attribute values.  The weighted sort is always
       performed in ascending order, but may be combined with the other
       methods for values that all have equal weights. The weight is
       specified by prepending an integer weight {<weight>} in front of
       each value of the attribute for which weighted sorting is
       desired. This weighting factor is stripped off and not returned
       in search results unless the valsort control is specified

       The valsort control requires a value consisting of a Sequence
       that contains a boolean flag. The weighting factor is only
       returned if the boolean value is TRUE. In lber-encode(3) format,
       the required value must conform to "{b}" syntax.


       These slapd.conf options apply to the Value Sorting overlay.
       They should appear after the overlay directive.

       valsort-attr <attribute> <baseDN> (<sort-method> | weighted
              Configure a sorting method for the specified attribute in
              the subtree rooted at baseDN.  The sort-method may be one
              of alpha-ascend, alpha-descend, numeric-ascend, or
              numeric-descend.  If the special weighted method is
              specified, a secondary sort-method may also be specified.
              It is an error to specify an alphanumeric sort-method for
              an attribute with Integer or NumericString syntax, and it
              is an error to specify a numeric sort-method for an
              attribute with a syntax other than Integer or

EXAMPLES         top

            database mdb
            suffix dc=example,dc=com
            overlay valsort
            valsort-attr member ou=groups,dc=example,dc=com alpha-ascend

       To invoke ldapsearch(1) with the valsort control, the control
       value must be set appropriately.  The following octets represent
       the desired "{b}" encoding:

            0x30 0x03 0x01 0x01 0xff

       The control can be sent from the command-line using the base64
       encoding of the value:

            ldapsearch -E

FILES         top

              default slapd configuration file

SEE ALSO         top

       slapd.conf(5), slapd-config(5).


       This module was written in 2005 by Howard Chu of Symas
       Corporation. The work was sponsored by Stanford University.

COLOPHON         top

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Pages that refer to this page: slapd.overlays(5)