bool udm_load_ispell_data ( resource agent, int var, string val1, string val2, int flag )
udm_load_ispell_data() loads ispell data.
Returns TRUE on success or FALSE on failure.
agent - agent link identifier, received after call
to udm_alloc_agent().
var - parameter, indicating the source for ispell
data. May have the following values:
After using this function to free memory allocated for ispell data, please
use udm_free_ispell_data(), even if you use UDM_ISPELL_TYPE_SERVER mode.
The fastest mode is UDM_ISPELL_TYPE_SERVER. UDM_ISPELL_TYPE_TEXT is slower
and UDM_ISPELL_TYPE_DB is the slowest. The above pattern is TRUE for
mnoGoSearch 3.1.10 - 3.1.11. It is planned to speed up DB mode in future
versions and it is going to be faster than TEXT mode.
UDM_ISPELL_TYPE_DB - indicates that ispell data should be loaded from SQL.
In this case, parameters val1 and val2
are ignored and should be left blank. flag
should be equal to 1.
Note: flag indicates that after loading ispell data
from defined source it should be sorted (it is necessary for correct
functioning of ispell). In case of loading ispell data from files
there may be several calls to udm_load_ispell_data(),
and there is no sense to sort data after every call, but only after
the last one. Since in db mode all the data is loaded by one call,
this parameter should have the value 1. In this mode
in case of error, e.g. if ispell tables are absent, the function will
return FALSE and code and error message will be accessible through
udm_error() and udm_errno().
UDM_ISPELL_TYPE_AFFIX - indicates that ispell data should be loaded from
file and initiates loading affixes file. In this case val1
defines double letter language code for which affixes are loaded,
and val2 - file path. Please note, that if
a relative path entered, the module looks for the file not in UDM_CONF_DIR,
but in relation to current path, i.e. to the path where the script is executed.
In case of error in this mode, e.g. if file is absent, the function will return
FALSE, and an error message will be displayed. Error message text cannot be
accessed through udm_error() and udm_errno(),
since those functions can only return messages associated with SQL. Please,
see flag parameter description in UDM_ISPELL_TYPE_DB.
UDM_ISPELL_TYPE_SPELL - indicates that ispell data should be loaded from
file and initiates loading of ispell dictionary file. In this case
val1 defines double letter language code for which
affixes are loaded,
and val2 - file path. Please note, that if a relative
path entered, the module looks for the file not in UDM_CONF_DIR, but in
relation to current path, i.e. to the path where the script is executed.
In case of error in this mode, e.g. if file is absent, the function will
return FALSE, and an error message will be displayed. Error message text
cannot be accessed through udm_error() and
udm_errno(), since those functions can only return messages
associated with SQL. Please, see flag parameter
description in UDM_ISPELL_TYPE_DB.
UDM_ISPELL_TYPE_SERVER - enables spell server support.
val1 parameter indicates
address of the host running spell server. val2 `
is not used yet, but in future releases it is going to indicate number
of port used by spell server. flag parameter in
this case is not needed since ispell data is stored
on spellserver already sorted.
Spelld server reads spell-data from a separate configuration file
(/usr/local/mnogosearch/etc/spelld.conf by default), sorts it and stores in
memory. With clients server communicates in two ways: to indexer all the
data is transferred (so that indexer starts faster), from search.cgi server
receives word to normalize and then passes over to client (search.cgi) list
of normalized word forms. This allows fastest, compared to db and text modes
processing of search queries (by omitting loading and sorting all the spell data).
udm_load_ispell_data() function in UDM_ISPELL_TYPE_SERVER
mode does not actually load ispell data, but only defines server address.
In fact, server is automatically used by udm_find()
function when performing search. In case of errors, e.g. if spellserver
is not running or invalid host indicated, there are no messages returned
and ispell conversion does not work.
Note:
This function is available in mnoGoSearch 3.1.12 or later.
Example:
<?php if (!udm_load_ispell_data($udm, UDM_ISPELL_TYPE_SERVER, '', '', 1)) { echo "Error loading ispell data from server<br />\n"; exit; } ?>
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