1 .TH SLAPO-VALSORT 5 "RELEASEDATE" "OpenLDAP LDVERSION"
2 .\" Copyright 2005-2014 The OpenLDAP Foundation All Rights Reserved.
3 .\" Copying restrictions apply. See COPYRIGHT/LICENSE.
6 slapo\-valsort \- Value Sorting overlay to slapd
10 The Value Sorting overlay can be used with a backend database to sort the
11 values of specific multi-valued attributes within a subtree. The sorting
12 occurs whenever the attributes are returned in a search response.
14 Sorting can be specified in ascending or descending order, using either
15 numeric or alphanumeric sort methods. Additionally, a "weighted" sort can
16 be specified, which uses a numeric weight prepended to the attribute values.
17 The weighted sort is always performed in ascending order, but may be combined
18 with the other methods for values that all have equal weights. The weight
19 is specified by prepending an integer weight {<\fIweight\fP>}
20 in front of each value of the attribute for which weighted sorting is
21 desired. This weighting factor is stripped off and not returned in search
22 results unless the valsort control is specified (1.3.6.1.4.1.4203.666.5.14).
24 The valsort control requires a value consisting of a Sequence that contains
25 a boolean flag. The weighting factor is only returned if the boolean value is TRUE. In
27 format, the required value must conform to "{b}" syntax.
32 options apply to the Value Sorting overlay.
33 They should appear after the
37 valsort\-attr <\fIattribute\fP> <\fIbaseDN\fP> (<\fIsort-method\fP> | weighted [<\fIsort-method\fP>])
38 Configure a sorting method for the specified
40 in the subtree rooted at
49 .BR numeric\-descend .
52 method is specified, a secondary
54 may also be specified. It is an
55 error to specify an alphanumeric
57 for an attribute with Integer
58 or NumericString syntax, and it is an error to specify a numeric
60 for an attribute with a syntax other than Integer or NumericString.
65 suffix dc=example,dc=com
68 valsort\-attr member ou=groups,dc=example,dc=com alpha\-ascend
73 with the valsort control, the control value must be set appropriately.
74 The following octets represent the desired "{b}" encoding:
77 0x30 0x03 0x01 0x01 0xff
80 The control can be sent from the command-line using the base64
81 encoding of the value:
84 ldapsearch -E 1.3.6.1.4.1.4203.666.5.14=::MAMBAf8=
89 \fIETCDIR/slapd.conf\fP
90 default \fBslapd\fP configuration file
93 .BR slapd\-config (5).
96 This module was written in 2005 by Howard Chu of Symas Corporation. The
97 work was sponsored by Stanford University.