Netscape NETSCAPE DIRECTORY SERVER 6.2 - GATEWAY CUSTOMIZATION, Manual

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Functions for Managing Computed Attributes
538 Netscape Directory Server Plug-In Programmer’s Guide • December 2003
slapi_compute_add_evaluator()
Registers the specified function as an evaluator that the server will call to generate
a computed attribute.
Syntax
#include “slapi-plugin.h”
int slapi_compute_add_evaluator( slapi_compute_callback_t function);
Parameters
This function takes the following parameters:
Returns
This function returns one of the following values:
• 0 if the function is successfully registered.
•
ENOMEM
if memory cannot be allocated to register this function.
Description
The
slapi_compute_add_evaluator()
function registers a function of the
slapi_compute_callback_t
type as an evaluator of computed attributes.
Before the server sends an entry as a search result back to the client, the server
determines if any of the requested attributes are computed attributes and generates
the values for those attributes.
Table 15-32 Routines for Computed Attributes
Function Description
slapi_compute_add_evaluator() Registers a function as an evaluator that the server will call to
generate a computed attribute.
slapi_compute_add_search_rewriter() Registers callbacks for filter and search rewriting.
compute_rewrite_search_filter() Call evaluator
functions to see if there is a match with a search
filter.
function
Function registered by the plug-in that will be used in
evaluating the computed attributes.