1 This directoery contains the central implementation of
2 Moodle's Global Search Engine.
4 The Global Search Engine stores indexes about a huge quantity
5 of information from within modules, block or resources stored
6 by Moodle either in the database or the file system.
8 The administrator initialy indexes the existing content. Once this
9 first initialization performed, the search engine maintains indexes
10 regularily, adding new entries, deleting obsolete one or updating
11 some that have changed.
13 Search will produce links for acceding the information in a similar
14 context as usually accessed, from the current user point of view.
15 Results filtering removes from results any link to information the
16 current user would not be allowed to acces on a straight situation.
21 The search engine is now part of Moodle core distribution.
23 Some extra libraries might be added for converting physical documents to text
24 so it can be indexed. Moodle CVS (entry contrib/patches/global_search_libraries)
25 provides packs for antiword and xpdf GPL libraries the search engine is ready for
26 shockwave indexing, but will not provide Adobe Search converters that should be
27 obtained at http://www.adobe.com/licensing/developer/
29 1. Go to the block administration panel and setup once the Global Search
30 block. This will initialize useful parameters for the global search engine.
32 2. Insert a new Global Search block somewhere in a course or top-level screen.
34 3. Launch an empty search (you must be administrator).
36 4. Go to the statistics screen.
38 5. Activate indexation (indexersplash.php). Beware, if your Moodle has
39 a large amount of content, indexing process may be VERY LONG.
41 To search, go back to the search block and try a query.
43 Handled information for indexing
44 ################################
46 In the actual state, the engine indexes the following information:
48 - assignment descriptions
50 - database records (using textual fields only)
53 - glossary comments on entries
54 - Moodle native resources
55 - physical MSWord files as resources (.doc)
56 - physical Powerpoint files as resources (.ppt)
57 - physical PDF files as resources
58 - physical text files as resources (.txt)
59 - physical html files as resources (.htm and .html)
60 - physical xml files as resources (.xml)
65 Some third party plugins are also searchable using the new Search API implementation
72 The reviewed search engine API allows:
74 - indexing of blocks contents
75 - indexation of modules or blocks containing a complex information model
76 - securing the access to the results
77 - adding indexing handling for additional modules and plugins adding a php calibrated script
78 - adding physical filetype handling adding a php calibrated script
80 Global Search on NFS Mounted clusters
81 #####################################
83 This version contains a patched Lucene Zend implementation that allows using the Global Search engine in an NFS mounted shared volume for Web clustering. This implementation
84 remains highly experimental and not all tests have been processed. Some changes may
85 occur in the SoftLockManager that was added to the Lucene engine.
90 - Should be added more information to index such as forum and glossary attachements,
91 so will other standard module contents.
92 - extending the search capability to a mnet network information space by aggregating remote search responses.