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MDL-11016, MDL-11015 improvements to the tag, tag_instance and tag_correlation tables
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toyomoyo
parent
522b89d1aa
commit
c4956945c1
@ -1,5 +1,5 @@
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<?xml version="1.0" encoding="UTF-8" ?>
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<XMLDB PATH="lib/db" VERSION="20070827" COMMENT="XMLDB file for core Moodle tables"
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<XMLDB PATH="lib/db" VERSION="20070828" COMMENT="XMLDB file for core Moodle tables"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:noNamespaceSchemaLocation="../../lib/xmldb/xmldb.xsd"
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>
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@ -1585,17 +1585,18 @@
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<TABLE NAME="tag" COMMENT="Tag table - this generic table will replace the old "tags" table." PREVIOUS="grade_import_values" NEXT="tag_correlation">
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<FIELDS>
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<FIELD NAME="id" TYPE="int" LENGTH="11" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="userid"/>
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<FIELD NAME="userid" TYPE="int" LENGTH="11" NOTNULL="true" UNSIGNED="false" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="name"/>
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<FIELD NAME="userid" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="name"/>
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<FIELD NAME="name" TYPE="char" LENGTH="255" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="userid" NEXT="rawname"/>
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<FIELD NAME="rawname" TYPE="char" LENGTH="255" NOTNULL="true" SEQUENCE="false" ENUM="false" COMMENT="The raw, unnormalised name for the tag as entered by users" PREVIOUS="name" NEXT="tagtype"/>
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<FIELD NAME="tagtype" TYPE="char" LENGTH="255" NOTNULL="false" SEQUENCE="false" ENUM="false" PREVIOUS="rawname" NEXT="description"/>
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<FIELD NAME="description" TYPE="text" LENGTH="small" NOTNULL="false" SEQUENCE="false" ENUM="false" PREVIOUS="tagtype" NEXT="descriptionformat"/>
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<FIELD NAME="descriptionformat" TYPE="int" LENGTH="2" NOTNULL="true" UNSIGNED="false" SEQUENCE="false" ENUM="false" PREVIOUS="description" NEXT="flag"/>
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<FIELD NAME="descriptionformat" TYPE="int" LENGTH="2" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="description" NEXT="flag"/>
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<FIELD NAME="flag" TYPE="int" LENGTH="4" NOTNULL="false" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" COMMENT="a tag can be 'flagged' as inappropriate" PREVIOUS="descriptionformat" NEXT="timemodified"/>
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<FIELD NAME="timemodified" TYPE="int" LENGTH="10" NOTNULL="false" UNSIGNED="true" SEQUENCE="false" ENUM="false" PREVIOUS="flag"/>
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</FIELDS>
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<KEYS>
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<KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for tag"/>
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<KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for tag" NEXT="userid"/>
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<KEY NAME="userid" TYPE="foreign" FIELDS="userid" REFTABLE="user" REFFIELDS="id" PREVIOUS="primary"/>
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</KEYS>
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<INDEXES>
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<INDEX NAME="name" UNIQUE="true" FIELDS="name" COMMENT="tag names are unique"/>
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@ -1604,30 +1605,29 @@
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<TABLE NAME="tag_correlation" COMMENT="The rationale for the 'tag_correlation' table is performance. It works as a cache for a potentially heavy load query done at the 'tag_instance' table. So, the 'tag_correlation' table stores redundant information derived from the 'tag_instance' table" PREVIOUS="tag" NEXT="tag_instance">
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<FIELDS>
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<FIELD NAME="id" TYPE="int" LENGTH="11" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="tagid"/>
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<FIELD NAME="tagid" TYPE="int" LENGTH="11" NOTNULL="true" UNSIGNED="false" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="correlatedtags"/>
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<FIELD NAME="tagid" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="correlatedtags"/>
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<FIELD NAME="correlatedtags" TYPE="text" LENGTH="small" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="tagid"/>
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</FIELDS>
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<KEYS>
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<KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for tag_correlation"/>
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<KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for tag_correlation" NEXT="tagid"/>
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<KEY NAME="tagid" TYPE="foreign" FIELDS="tagid" REFTABLE="tag" REFFIELDS="id" PREVIOUS="primary"/>
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</KEYS>
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<INDEXES>
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<INDEX NAME="tagid" UNIQUE="true" FIELDS="tagid" COMMENT="tagid"/>
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</INDEXES>
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</TABLE>
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<TABLE NAME="tag_instance" COMMENT="tag_instance table holds the information of associations between tags and other items" PREVIOUS="tag_correlation" NEXT="groups">
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<FIELDS>
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<FIELD NAME="id" TYPE="int" LENGTH="11" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="tagid"/>
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<FIELD NAME="tagid" TYPE="int" LENGTH="11" NOTNULL="true" UNSIGNED="false" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="itemtype"/>
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<FIELD NAME="tagid" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="itemtype"/>
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<FIELD NAME="itemtype" TYPE="char" LENGTH="255" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="tagid" NEXT="itemid"/>
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<FIELD NAME="itemid" TYPE="int" LENGTH="11" NOTNULL="true" UNSIGNED="false" SEQUENCE="false" ENUM="false" PREVIOUS="itemtype" NEXT="ordering"/>
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<FIELD NAME="ordering" TYPE="int" LENGTH="10" NOTNULL="false" UNSIGNED="false" SEQUENCE="false" ENUM="false" COMMENT="Maintains the order of the tag instances of an item" PREVIOUS="itemid" NEXT="timemodified"/>
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<FIELD NAME="itemid" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="false" ENUM="false" PREVIOUS="itemtype" NEXT="ordering"/>
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<FIELD NAME="ordering" TYPE="int" LENGTH="10" NOTNULL="false" UNSIGNED="true" SEQUENCE="false" ENUM="false" COMMENT="Maintains the order of the tag instances of an item" PREVIOUS="itemid" NEXT="timemodified"/>
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<FIELD NAME="timemodified" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" COMMENT="timemodified" PREVIOUS="ordering"/>
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</FIELDS>
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<KEYS>
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<KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for tag_instance"/>
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<KEY NAME="primary" TYPE="primary" FIELDS="id" COMMENT="Primary key for tag_instance" NEXT="tagid"/>
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<KEY NAME="tagid" TYPE="foreign" FIELDS="tagid" REFTABLE="tag" REFFIELDS="id" PREVIOUS="primary"/>
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</KEYS>
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<INDEXES>
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<INDEX NAME="tagiditem" UNIQUE="true" FIELDS="tagid, itemtype, itemid"/>
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<INDEX NAME="itemtype-itemid-tagid" UNIQUE="true" FIELDS="itemtype, itemid, tagid"/>
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</INDEXES>
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</TABLE>
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<TABLE NAME="groups" COMMENT="Each record represents a group." PREVIOUS="tag_instance" NEXT="groupings">
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@ -1833,6 +1833,109 @@ function xmldb_main_upgrade($oldversion=0) {
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$table = new XMLDBTable('blog_tag_instance');
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drop_table($table);
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}
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/// MDL-11015, MDL-11016
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if ($result && $oldversion < 2007082800) {
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/// Changing type of field userid on table tag to int
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$table = new XMLDBTable('tag');
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$field = new XMLDBField('userid');
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$field->setAttributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, null, null, 'id');
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/// Launch change of type for field userid
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$result = $result && change_field_type($table, $field);
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/// Changing type of field descriptionformat on table tag to int
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$table = new XMLDBTable('tag');
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$field = new XMLDBField('descriptionformat');
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$field->setAttributes(XMLDB_TYPE_INTEGER, '2', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, null, '0', 'description');
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/// Launch change of type for field descriptionformat
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$result = $result && change_field_type($table, $field);
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/// Define key userid (foreign) to be added to tag
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$table = new XMLDBTable('tag');
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$key = new XMLDBKey('userid');
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$key->setAttributes(XMLDB_KEY_FOREIGN, array('userid'), 'user', array('id'));
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/// Launch add key userid
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$result = $result && add_key($table, $key);
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/// Define index tagiditem (unique) to be dropped form tag_instance
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$table = new XMLDBTable('tag_instance');
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$index = new XMLDBIndex('tagiditem');
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$index->setAttributes(XMLDB_INDEX_UNIQUE, array('tagid', 'itemtype', 'itemid'));
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/// Launch drop index tagiditem
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$result = $result && drop_index($table, $index);
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/// Changing type of field tagid on table tag_instance to int
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$table = new XMLDBTable('tag_instance');
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$field = new XMLDBField('tagid');
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$field->setAttributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, null, null, 'id');
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/// Launch change of type for field tagid
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$result = $result && change_field_type($table, $field);
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/// Define key tagid (foreign) to be added to tag_instance
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$table = new XMLDBTable('tag_instance');
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$key = new XMLDBKey('tagid');
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$key->setAttributes(XMLDB_KEY_FOREIGN, array('tagid'), 'tag', array('id'));
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/// Launch add key tagid
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$result = $result && add_key($table, $key);
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/// Changing sign of field itemid on table tag_instance to unsigned
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$table = new XMLDBTable('tag_instance');
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$field = new XMLDBField('itemid');
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$field->setAttributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, null, null, 'itemtype');
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/// Launch change of sign for field itemid
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$result = $result && change_field_unsigned($table, $field);
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/// Changing sign of field ordering on table tag_instance to unsigned
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$table = new XMLDBTable('tag_instance');
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$field = new XMLDBField('ordering');
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$field->setAttributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, null, null, null, null, null, 'itemid');
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/// Launch change of sign for field ordering
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$result = $result && change_field_unsigned($table, $field);
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/// Define index itemtype-itemid-tagid (unique) to be added to tag_instance
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$table = new XMLDBTable('tag_instance');
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$index = new XMLDBIndex('itemtype-itemid-tagid');
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$index->setAttributes(XMLDB_INDEX_UNIQUE, array('itemtype', 'itemid', 'tagid'));
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/// Launch add index itemtype-itemid-tagid
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$result = $result && add_index($table, $index);
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/// Define index tagid (unique) to be dropped form tag_correlation
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$table = new XMLDBTable('tag_correlation');
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$index = new XMLDBIndex('tagid');
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$index->setAttributes(XMLDB_INDEX_UNIQUE, array('tagid'));
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/// Launch drop index tagid
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$result = $result && drop_index($table, $index);
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/// Changing type of field tagid on table tag_correlation to int
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$table = new XMLDBTable('tag_correlation');
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$field = new XMLDBField('tagid');
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$field->setAttributes(XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, null, null, 'id');
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/// Launch change of type for field tagid
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$result = $result && change_field_type($table, $field);
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/// Define key tagid (foreign) to be added to tag_correlation
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$table = new XMLDBTable('tag_correlation');
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$key = new XMLDBKey('tagid');
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$key->setAttributes(XMLDB_KEY_FOREIGN, array('tagid'), 'tag', array('id'));
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/// Launch add key tagid
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$result = $result && add_key($table, $key);
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}
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return $result;
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}
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@ -6,7 +6,7 @@
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// This is compared against the values stored in the database to determine
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// whether upgrades should be performed (see lib/db/*.php)
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$version = 2007082701; // YYYYMMDD = date
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$version = 2007082800; // YYYYMMDD = date
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// XY = increments within a single day
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$release = '1.9 Beta +'; // Human-friendly version name
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