adminguide.txt.svn-base

PHP 知识管理系统（基于树结构的知识管理系统）, 英文原版的PHP源码。

SEARCH2 Administrator Guide
===========================

Note: The most up-to-date version of this can be found on the wiki at http://wiki.knowledgetree.com/Search2

Configuration
-------------

[search]
; The number of results per page
; defaults to 25
resultsPerPage = default

; The date format used when making queries using widgets
; defaults to Y-m-d .... NOTE Future development
dateFormat = default

[indexer]
; The core indexing class
coreClass=PHPLuceneIndexer

; The number of documents to be indexed in a cron session
; defaults to 20
batchDocuments = default

; The location of the lucene indexes
luceneDirectory=${varDirectory}/indexes

; The url for the Java Lucene Server. This should match up the the Lucene Server configuration.
; Defaults to http://localhost:8875
javaLuceneURL = default

Setting up the Lucene Directory
-------------------------------

If using the Java Lucene Server, simply start the server. Ensure that it is configured correctly. Some more information is available
in ktroot/bin/luceneserver/README.TXT

Edit the config.ini and ensure that the 'javaLuceneURL' field is correct.

If using the PHP Lucene Server, you need to run the search2/indexing/bin/recreateIndex.php.

Migration
---------

Migrating to the new server requires that the content of the full text tables are extracted and inserted into the Lucene indexes.
This is done using the search2/indexing/bin/migrate.php script. (this feature can be heavy - care should be taken when implementing)

Registering new extractors
--------------------------

If a new extractor has been added to the search2/indexing/extractors folder, the search2/indexing/bin/registerTypes.php script must be run to associate them with
the correct mime types. Note that old associations will not be overwritten.

Search Results Ranking
----------------------

Review the 'search_ranking' table to find the weightings associated with matching subexpressions. These may be modified to improve the
relevance of search results according to your needs.

Status
------

TODO:
The lucene indexers should provide some statistics on the lucene index. It should provide some general information on the index, but a diagnostics
function should be available to ensure that the correct version of the documents are indexed and possibly reschedule indexing if there is a mismatch for
some reason. (this feature could be heavy on the system - care should be taken when implementing)

Background Tasks
----------------
search2/indexing/bin/cronIndexer.php - task to batch index files.
search2/indexing/bin/optimise.php    - task to optimise the lucene index.

The indexing script should be run frequently - say every 5 minutes. The config.ini allows for the number of documents to be indexed to be configured. This
defaults to 20. If the frequency is shortened, you may want to decrease the number of documents that will be indexed so that there is no serious load that can
impact on the performance of the system.

The lucene index requires optimisation to ensure that performance is optimal. This could be run once a day around midnight, or weekly depending on frequency
of updates to the index.

HOWTO - how to run a php script from the command line
-----------------------------------------------------

php -Cq script.php