associative array that contains the details of each type of change that is intended to be performed. The types of changes that are currently supported are defined as follows: name New name for the table. added_fields Associative array with the names of fields to be added as indexes of the array. The value of each entry of the array should be set to another associative array with the properties of the fields to be added. The properties of the fields should be the same as defined by the Metabase parser. Additionally, there should be an entry named Declaration that is expected to contain the portion of the field declaration already in DBMS specific SQL code as it is used in the CREATE TABLE statement. removed_fields Associative array with the names of fields to be removed as indexes of the array. Currently the values assigned to each entry are ignored. An empty array should be used for future compatibility. renamed_fields Associative array with the names of fields to be renamed as indexes of the array. The value of each entry of the array should be set to another associative array with the entry named name with the new field name and the entry named Declaration that is expected to contain the portion of the field declaration already in DBMS specific SQL code as it is used in the CREATE TABLE statement. changed_fields Associative array with the names of the fields to be changed as indexes of the array. Keep in mind that if it is intended to change either the name of a field and any other properties, the changed_fields array entries should have the new names of the fields as array indexes. The value of each entry of the array should be set to another associative array with the properties of the fields to that are meant to be changed as array entries. These entries should be assigned to the new values of the respective properties. The properties of the fields should be the same as defined by the Metabase parser. If the default property is meant to be added, removed or changed, there should also be an entry with index ChangedDefault assigned to 1. Similarly, if the notnull constraint is to be added or removed, there should also be an entry with index ChangedNotNull assigned to 1. Additionally, there should be an entry named Declaration that is expected to contain the portion of the field changed declaration already in DBMS specific SQL code as it is used in the CREATE TABLE statement. Example array( 'name' => 'userlist', 'added_fields' => array( 'quota' => array( 'type' => 'integer', 'unsigned' => 1 'declaration' => 'quota INT' ) ), 'removed_fields' => array( 'file_limit' => array(), 'time_limit' => array() ), 'changed_fields' => array( 'gender' => array( 'default' => 'M', 'change_default' => 1, 'declaration' => "gender CHAR(1) DEFAULT 'M'" ) ), 'renamed_fields' => array( 'sex' => array( 'name' => 'gender', 'declaration' => "gender CHAR(1) DEFAULT 'M'" ) ) ) |
