Search moodle.org's
Developer Documentation
Developer Documentation
- Bug fixes for general core bugs in 3.11.x will end 14 Nov 2022 (12 months plus 6 months extension).
- Bug fixes for security issues in 3.11.x will end 13 Nov 2023 (18 months plus 12 months extension).
- PHP version: minimum PHP 7.3.0 Note: minimum PHP version has increased since Moodle 3.10. PHP 7.4.x is supported too.
/lib/ddl/ -> oracle_sql_generator.php (source)
Oracle specific SQL code generator.
| Copyright: | 1999 onwards Martin Dougiamas http://dougiamas.com |
| License: | http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later |
| File Size: | 756 lines (35 kb) |
| Included or required: | 0 times |
| Referenced: | 0 times |
| Includes or requires: | 0 files |
Defines 1 class
oracle_sql_generator:: (20 methods):
getResetSequenceSQL()
getTableName()
getCreateIndexSQL()
getCreateTempTableSQL()
getDropTableSQL()
getTypeSQL()
getCreateSequenceSQL()
getCreateTriggerSQL()
getDropSequenceSQL()
getCommentSQL()
getDropTableExtraSQL()
getRenameTableExtraSQL()
getAlterFieldSQL()
getCreateDefaultSQL()
getDropDefaultSQL()
getSequenceFromDB()
getTriggerFromDB()
isNameInUse()
addslashes()
getReservedWords()
Class: oracle_sql_generator - X-Ref
This class generate SQL code to be used against OracleIt extends XMLDBgenerator so everything can be
overridden as needed to generate correct SQL.
| getResetSequenceSQL($table) X-Ref |
| Reset a sequence to the id field of a table. param: xmldb_table|string $table name of table or the table object. return: array of sql statements |
| getTableName(xmldb_table $xmldb_table, $quoted=true) X-Ref |
| Given one xmldb_table, returns it's correct name, depending of all the parametrization Overridden to allow change of names in temp tables param: xmldb_table table whose name we want param: boolean to specify if the name must be quoted (if reserved word, only!) return: string the correct name of the table |
| getCreateIndexSQL($xmldb_table, $xmldb_index) X-Ref |
| No description |
| getCreateTempTableSQL($xmldb_table) X-Ref |
| Given one correct xmldb_table, returns the SQL statements to create temporary table (inside one array). param: xmldb_table $xmldb_table The xmldb_table object instance. return: array of sql statements |
| getDropTableSQL($xmldb_table) X-Ref |
| Given one correct xmldb_table, returns the SQL statements to drop it (inside one array). param: xmldb_table $xmldb_table The table to drop. return: array SQL statement(s) for dropping the specified table. |
| getTypeSQL($xmldb_type, $xmldb_length=null, $xmldb_decimals=null) X-Ref |
| Given one XMLDB Type, length and decimals, returns the DB proper SQL type. param: int $xmldb_type The xmldb_type defined constant. XMLDB_TYPE_INTEGER and other XMLDB_TYPE_* constants. param: int $xmldb_length The length of that data type. param: int $xmldb_decimals The decimal places of precision of the data type. return: string The DB defined data type. |
| getCreateSequenceSQL($xmldb_table, $xmldb_field) X-Ref |
| Returns the code (array of statements) needed to create one sequence for the xmldb_table and xmldb_field passed in. param: xmldb_table $xmldb_table The xmldb_table object instance. param: xmldb_field $xmldb_field The xmldb_field object instance. return: array Array of SQL statements to create the sequence. |
| getCreateTriggerSQL($xmldb_table, $xmldb_field, $sequence_name) X-Ref |
| Returns the code needed to create one trigger for the xmldb_table and xmldb_field passed param: xmldb_table $xmldb_table The xmldb_table object instance. param: xmldb_field $xmldb_field The xmldb_field object instance. param: string $sequence_name return: array Array of SQL statements to create the sequence. |
| getDropSequenceSQL($xmldb_table, $xmldb_field, $include_trigger=false) X-Ref |
| Returns the code needed to drop one sequence for the xmldb_table and xmldb_field passed Can, optionally, specify if the underlying trigger will be also dropped param: xmldb_table $xmldb_table The xmldb_table object instance. param: xmldb_field $xmldb_field The xmldb_field object instance. param: bool $include_trigger return: array Array of SQL statements to create the sequence. |
| getCommentSQL($xmldb_table) X-Ref |
| Returns the code (array of statements) needed to add one comment to the table. param: xmldb_table $xmldb_table The xmldb_table object instance. return: array Array of SQL statements to add one comment to the table. |
| getDropTableExtraSQL($xmldb_table) X-Ref |
| Returns the code (array of statements) needed to execute extra statements on table drop param: xmldb_table $xmldb_table The xmldb_table object instance. return: array Array of extra SQL statements to drop a table. |
| getRenameTableExtraSQL($xmldb_table, $newname) X-Ref |
| Returns the code (array of statements) needed to execute extra statements on table rename. param: xmldb_table $xmldb_table The xmldb_table object instance. param: string $newname The new name for the table. return: array Array of extra SQL statements to rename a table. |
| getAlterFieldSQL($xmldb_table, $xmldb_field, $skip_type_clause = NULL, $skip_default_clause = NULL, $skip_notnull_clause = NULL) X-Ref |
| Given one xmldb_table and one xmldb_field, return the SQL statements needed to alter the field in the table. Oracle has some severe limits: - clob and blob fields doesn't allow type to be specified - error is dropped if the null/not null clause is specified and hasn't changed - changes in precision/decimals of numeric fields drop an ORA-1440 error param: xmldb_table $xmldb_table The table related to $xmldb_field. param: xmldb_field $xmldb_field The instance of xmldb_field to create the SQL from. param: string $skip_type_clause The type clause on alter columns, NULL by default. param: string $skip_default_clause The default clause on alter columns, NULL by default. param: string $skip_notnull_clause The null/notnull clause on alter columns, NULL by default. return: string The field altering SQL statement. |
| getCreateDefaultSQL($xmldb_table, $xmldb_field) X-Ref |
| Given one xmldb_table and one xmldb_field, return the SQL statements needed to add its default (usually invoked from getModifyDefaultSQL() param: xmldb_table $xmldb_table The xmldb_table object instance. param: xmldb_field $xmldb_field The xmldb_field object instance. return: array Array of SQL statements to create a field's default. |
| getDropDefaultSQL($xmldb_table, $xmldb_field) X-Ref |
| Given one xmldb_table and one xmldb_field, return the SQL statements needed to drop its default (usually invoked from getModifyDefaultSQL() Note that this method may be dropped in future. param: xmldb_table $xmldb_table The xmldb_table object instance. param: xmldb_field $xmldb_field The xmldb_field object instance. return: array Array of SQL statements to create a field's default. |
| getSequenceFromDB($xmldb_table) X-Ref |
| Given one xmldb_table returns one string with the sequence of the table in the table (fetched from DB) The sequence name for oracle is calculated by looking the corresponding trigger and retrieving the sequence name from it (because sequences are independent elements) param: xmldb_table $xmldb_table The xmldb_table object instance. return: string|bool If no sequence is found, returns false |
| getTriggerFromDB($xmldb_table) X-Ref |
| Given one xmldb_table returns one string with the trigger in the table (fetched from DB) param: xmldb_table $xmldb_table The xmldb_table object instance. return: string|bool If no trigger is found, returns false |
| isNameInUse($object_name, $type, $table_name) X-Ref |
| Given one object name and it's type (pk, uk, fk, ck, ix, uix, seq, trg). (MySQL requires the whole xmldb_table object to be specified, so we add it always) This is invoked from getNameForObject(). Only some DB have this implemented. param: string $object_name The object's name to check for. param: string $type The object's type (pk, uk, fk, ck, ix, uix, seq, trg). param: string $table_name The table's name to check in return: bool If such name is currently in use (true) or no (false) |
| addslashes($s) X-Ref |
| Adds slashes to string. param: string $s return: string The escaped string. |
| getReservedWords() X-Ref |
| Returns an array of reserved words (lowercase) for this DB return: array An array of database specific reserved words |
