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.TH SLAPO-VALSORT 5 "RELEASEDATE" "OpenLDAP LDVERSION"
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2008-01-08 08:19:56 +08:00
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.\" Copyright 2005-2008 The OpenLDAP Foundation All Rights Reserved.
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.\" Copying restrictions apply. See COPYRIGHT/LICENSE.
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.\" $OpenLDAP$
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.SH NAME
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slapo-valsort \- Value Sorting overlay to slapd
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.SH SYNOPSIS
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ETCDIR/slapd.conf
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.SH DESCRIPTION
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The Value Sorting overlay can be used with a backend database to sort the
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values of specific multi-valued attributes within a subtree. The sorting
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occurs whenever the attributes are returned in a search response.
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.LP
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Sorting can be specified in ascending or descending order, using either
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numeric or alphanumeric sort methods. Additionally, a "weighted" sort can
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be specified, which uses a numeric weight prepended to the attribute values.
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The weighted sort is always performed in ascending order, but may be combined
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with the other methods for values that all have equal weights. The weight
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is specified by prepending an integer weight {<\fIweight\fP>}
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in front of each value of the attribute for which weighted sorting is
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desired. This weighting factor is stripped off and never returned in
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search results.
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.SH CONFIGURATION
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These
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.I slapd.conf
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options apply to the Value Sorting overlay.
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They should appear after the
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.B overlay
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directive.
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.TP
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valsort-attr <\fIattribute\fP> <\fIbaseDN\fP> (<\fIsort-method\fP> | weighted [<\fIsort-method\fP>])
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Configure a sorting method for the specified
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.I attribute
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in the subtree rooted at
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.IR baseDN .
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The
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.I sort-method
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may be one of
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.BR alpha-ascend ,
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.BR alpha-descend ,
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.BR numeric-ascend ,
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or
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.BR numeric-descend .
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If the special
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.B weighted
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method is specified, a secondary
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.I sort-method
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may also be specified. It is an
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error to specify an alphanumeric
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.I sort-method
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for an attribute with Integer
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or NumericString syntax, and it is an error to specify a numeric
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.I sort-method
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for an attribute with a syntax other than Integer or NumericString.
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.SH EXAMPLES
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.LP
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.nf
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database bdb
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suffix dc=example,dc=com
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...
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overlay valsort
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valsort-attr member ou=groups,dc=example,dc=com alpha-ascend
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.fi
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.SH FILES
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.TP
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\fIETCDIR/slapd.conf\fP
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default \fBslapd\fP configuration file
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.SH SEE ALSO
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.BR slapd.conf (5).
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.SH ACKNOWLEDGEMENTS
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.P
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This module was written in 2005 by Howard Chu of Symas Corporation. The
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work was sponsored by Stanford University.
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