[svn r17519] search: add tables to manage search engine data

- specific fields
  - add sql to create tables specific_field_values and specific_field, that will manage search engine terms dinamically
- search_engine_ref
  - add table to globally map dokeos resources to search engine documents
- search results
  - add search_show_unlinked_results option and its values to change results visibility

main/install/dokeos_main_corp.sql

@@ -1,10 +1,41 @@
 INSERT INTO settings_current 
 (variable, subkey, type, category, selected_value, title, comment, scope, subkeytext)
 VALUES
-('search_enabled',NULL,'radio','Tools','false','EnableSearchTitle','EnableSearchComment',NULL,NULL);
+('search_enabled',NULL,'radio','Tools','false','EnableSearchTitle','EnableSearchComment',NULL,NULL),
+('search_show_unlinked_results',NULL,'radio','Tools','true','SearchShowUnlinkedResultsTitle','SearchShowUnlinkedResultsComment',NULL,NULL);
 
 INSERT INTO settings_options 
 (variable, value, display_text)
 VALUES
 ('search_enabled', 'true', 'Yes'),
-('search_enabled', 'false', 'No');
+('search_enabled', 'false', 'No'),
+('search_show_unlinked_results', 'true', 'SearchShowUnlinkedResults'),
+('search_show_unlinked_results', 'false', 'SearchHideUnlinkedResults');
+
+
+-- specific fields tables
+ CREATE TABLE specific_field (
+id INT NOT NULL AUTO_INCREMENT PRIMARY KEY ,
+code char(1) NOT NULL,
+name VARCHAR( 200 ) NOT NULL
+);
+
+CREATE TABLE specific_field_values (
+id INT NOT NULL AUTO_INCREMENT PRIMARY KEY ,
+course_code VARCHAR( 40 ) NOT NULL ,
+tool_id VARCHAR( 100 ) NOT NULL ,
+ref_id INT NOT NULL ,
+field_id INT NOT NULL ,
+value VARCHAR( 200 ) NOT NULL
+);
+ALTER TABLE specific_field ADD CONSTRAINT unique_specific_field__code UNIQUE (code);
+
+-- search engine references to map dokeos resources
+CREATE TABLE search_engine_ref (
+id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
+course_code VARCHAR( 40 ) NOT NULL,
+tool_id VARCHAR( 100 ) NOT NULL,
+ref_id_high_level INT NOT NULL,
+ref_id_second_level INT NULL,
+search_did INT NOT NULL
+);