chamilo-lms/main/search/NOTES

Development information

  Compiling the modified OogieDocumentConverter.java(note target):
    javac -cp .:commons-cli-1.0.jar:commons-io-1.3.1.jar:edtftpj-1.5.2.jar:java_uno_accessbridge.jar:java_uno.jar:jodconverter-2.2.1.jar:jodconverter-cli-2.2.1.jar:juh-2.3.0.jar:jurt-2.3.0.jar:jut.jar:oogie.jar:ridl-2.3.0.jar:ridl.jar:slf4j-api-1.4.3.jar:slf4j-jdk14-1.4.3.jar:unoil-2.3.0.jar:xstream-1.2.2.jar -sourcepath commons-cli-1.0.jar:commons-io-1.3.1.jar:edtftpj-1.5.2.jar:java_uno_accessbridge.jar:java_uno.jar:jodconverter-2.2.1.jar:jodconverter-cli-2.2.1.jar:juh-2.3.0.jar:jurt-2.3.0.jar:jut.jar:oogie.jar:ridl-2.3.0.jar:ridl.jar:slf4j-api-1.4.3.jar:slf4j-jdk14-1.4.3.jar:unoil-2.3.0.jar:xstream-1.2.2.jar -target 1.5 OogieDocumentConverter.java

  Debugging help:
    error_log('info: id = <'. $id .'>');
    Display::display_normal_message(print_r($arrLP,1));

  DB modifications:
    ALTER TABLE lp_item ADD terms TEXT NULL ;
    ALTER TABLE lp_item ADD search_did INT(10) NULL
    -- on every course, so it's pending(TODO):
       -- script to generate it for all courses depending of the type of dokeos intalation(one db or many)
       -- create it when a course is created

  About search:
    Xapian support two main ways of search: probabilistic and boolean.
    - Probabilistic: search in all index_text() info indexed to xapian
    - Boolean: search in xapian terms(doc have the term or not), depending on prefix

  About terms:
    It's assumed that terms(tags) have only 1 word and are stored at a CVS string in dokeos DB
    Prefixs:
      Each term in xapian DB would have a prefix depending of the tipe of term. 
      Here is the actual propossed list:
      - 'T': tags(free tagging), stored in db
      - 'F': filetype(form source), not stored in db only one term
      - 'C': course id