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- <?php
- // +----------------------------------------------------------------------+
- // | PHP Version 4 |
- // +----------------------------------------------------------------------+
- // | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox, |
- // | Stig. S. Bakken, Lukas Smith, Frank M. Kromann |
- // | All rights reserved. |
- // +----------------------------------------------------------------------+
- // | MDB is a merge of PEAR DB and Metabases that provides a unified DB |
- // | API as well as database abstraction for PHP applications. |
- // | This LICENSE is in the BSD license style. |
- // | |
- // | Redistribution and use in source and binary forms, with or without |
- // | modification, are permitted provided that the following conditions |
- // | are met: |
- // | |
- // | Redistributions of source code must retain the above copyright |
- // | notice, this list of conditions and the following disclaimer. |
- // | |
- // | Redistributions in binary form must reproduce the above copyright |
- // | notice, this list of conditions and the following disclaimer in the |
- // | documentation and/or other materials provided with the distribution. |
- // | |
- // | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
- // | Lukas Smith nor the names of his contributors may be used to endorse |
- // | or promote products derived from this software without specific prior|
- // | written permission. |
- // | |
- // | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
- // | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
- // | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
- // | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
- // | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
- // | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
- // | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
- // | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
- // | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
- // | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
- // | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
- // | POSSIBILITY OF SUCH DAMAGE. |
- // +----------------------------------------------------------------------+
- // | Author: Lukas Smith <smith@dybnet.de> |
- // +----------------------------------------------------------------------+
- //
- // $Id: fbsql.php,v 1.7.4.5 2004/01/08 13:43:01 lsmith Exp $
- //
-
- if(!defined('MDB_MANAGER_FBSQL_INCLUDED'))
- {
- define('MDB_MANAGER_FBSQL_INCLUDED', 1);
-
- require_once('MDB/Modules/Manager/Common.php');
-
- /**
- * MDB FrontBase driver for the management modules
- *
- * @package MDB
- * @category Database
- * @access private
- * @author Lukas Smith <smith@dybnet.de>
- * @author Frank M. Kromann <frank@kromann.info>
- */
- class MDB_Manager_fbsql extends MDB_Manager_Common
- {
- // }}}
- // {{{ createDatabase()
-
- /**
- * create a new database
- *
- * @param object $dbs database object that is extended by this class
- * @param string $name name of the database that should be created
- * @return mixed MDB_OK on success, a MDB error on failure
- * @access public
- */
- function createDatabase(&$db, $name)
- {
- if (MDB::isError($result = $db->connect())) {
- return($result);
- }
- if (!fbsql_create_db($name, $db->connection)) {
- return($db->fbsqlRaiseError());
- }
-
- return(MDB_OK);
- }
-
- // }}}
- // {{{ dropDatabase()
-
- /**
- * drop an existing database
- *
- * @param object $dbs database object that is extended by this class
- * @param string $name name of the database that should be dropped
- * @return mixed MDB_OK on success, a MDB error on failure
- * @access public
- */
- function dropDatabase(&$db, $name)
- {
- if (MDB::isError($result = $db->connect())) {
- return($result);
- }
- if (!fbsql_stop_db($name, $db->connection)) {
- return($db->fbsqlRaiseError());
- }
- if (!fbsql_drop_db($name, $db->connection)) {
- return($db->fbsqlRaiseError());
- }
- return($db->disconnect());
- }
-
- // }}}
- // {{{ createTable()
-
- /**
- * create a new table
- *
- * @param object $dbs database object that is extended by this class
- * @param string $name Name of the database that should be created
- * @param array $fields Associative array that contains the definition of each field of the new table
- * The indexes of the array entries are the names of the fields of the table an
- * the array entry values are associative arrays like those that are meant to be
- * passed with the field definitions to get[Type]Declaration() functions.
- *
- * Example
- * array(
- *
- * 'id' => array(
- * 'type' => 'integer',
- * 'unsigned' => 1
- * 'notnull' => 1
- * 'default' => 0
- * ),
- * 'name' => array(
- * 'type' => 'text',
- * 'length' => 12
- * ),
- * 'password' => array(
- * 'type' => 'text',
- * 'length' => 12
- * )
- * );
- * @return mixed MDB_OK on success, a MDB error on failure
- * @access public
- */
- function createTable(&$db, $name, $fields)
- {
- if (!isset($name) || !strcmp($name, '')) {
- return($db->raiseError(MDB_ERROR_CANNOT_CREATE, NULL, NULL, 'no valid table name specified'));
- }
- if (count($fields) == 0) {
- return($db->raiseError(MDB_ERROR_CANNOT_CREATE, NULL, NULL, 'no fields specified for table "'.$name.'"'));
- }
- if (MDB::isError($query_fields = $db->getFieldDeclarationList($fields))) {
- return($db->raiseError(MDB_ERROR_CANNOT_CREATE, NULL, NULL, 'unkown error'));
- }
- $query = "CREATE TABLE $name ($query_fields)";
-
- return($db->query($query));
- }
-
- // }}}
- // {{{ dropTable()
-
- /**
- * drop an existing table
- *
- * @param object $dbs database object that is extended by this class
- * @param string $name name of the table that should be dropped
- * @return mixed MDB_OK on success, a MDB error on failure
- * @access public
- */
- function dropTable(&$db, $name)
- {
- return($db->query("DROP TABLE $name CASCADE"));
- }
-
- // }}}
- // {{{ alterTable()
-
- /**
- * alter an existing table
- *
- * @param object $dbs database object that is extended by this class
- * @param string $name name of the table that is intended to be changed.
- * @param array $changes 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.
- *
- * AddedFields
- *
- * 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.
- *
- * RemovedFields
- *
- * 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.
- *
- * RenamedFields
- *
- * 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.
- *
- * ChangedFields
- *
- * 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 ChangedFields 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',
- * 'AddedFields' => array(
- * 'quota' => array(
- * 'type' => 'integer',
- * 'unsigned' => 1
- * 'Declaration' => 'quota INT'
- * )
- * ),
- * 'RemovedFields' => array(
- * 'file_limit' => array(),
- * 'time_limit' => array()
- * ),
- * 'ChangedFields' => array(
- * 'gender' => array(
- * 'default' => 'M',
- * 'ChangeDefault' => 1,
- * 'Declaration' => "gender CHAR(1) DEFAULT 'M'"
- * )
- * ),
- * 'RenamedFields' => array(
- * 'sex' => array(
- * 'name' => 'gender',
- * 'Declaration' => "gender CHAR(1) DEFAULT 'M'"
- * )
- * )
- * )
- *
- * @param boolean $check indicates whether the function should just check if the DBMS driver
- * can perform the requested table alterations if the value is true or
- * actually perform them otherwise.
- * @access public
- *
- * @return mixed MDB_OK on success, a MDB error on failure
- */
- function alterTable(&$db, $name, $changes, $check)
- {
- if ($check) {
- for($change = 0,reset($changes);
- $change < count($changes);
- next($changes), $change++)
- {
- switch(key($changes)) {
- case 'AddedFields':
- case 'RemovedFields':
- case 'ChangedFields':
- case 'RenamedFields':
- case 'name':
- break;
- default:
- return($db->raiseError(MDB_ERROR_CANNOT_ALTER, NULL, NULL,
- 'Alter table: change type "'.Key($changes).'" not yet supported'));
- }
- }
- return(MDB_OK);
- } else {
- $query = (isset($changes['name']) ? 'RENAME AS '.$changes['name'] : '');
- if (isset($changes['AddedFields'])) {
- $fields = $changes['AddedFields'];
- for($field = 0, reset($fields);
- $field<count($fields);
- next($fields), $field++)
- {
- if (strcmp($query, '')) {
- $query .= ',';
- }
- $query .= 'ADD '.$fields[key($fields)]['Declaration'];
- }
- }
- if (isset($changes['RemovedFields'])) {
- $fields = $changes['RemovedFields'];
- for($field = 0,reset($fields);
- $field<count($fields);
- next($fields), $field++)
- {
- if (strcmp($query, '')) {
- $query .= ',';
- }
- $query .= 'DROP '.key($fields);
- }
- }
- $renamed_fields = array();
- if (isset($changes['RenamedFields'])) {
- $fields = $changes['RenamedFields'];
- for($field = 0,reset($fields);
- $field<count($fields);
- next($fields), $field++)
- {
- $renamed_fields[$fields[key($fields)]['name']] = key($fields);
- }
- }
- if (isset($changes['ChangedFields'])) {
- $fields = $changes['ChangedFields'];
- for($field = 0,reset($fields);
- $field<count($fields);
- next($fields), $field++)
- {
- if (strcmp($query, '')) {
- $query .= ',';
- }
- if (isset($renamed_fields[key($fields)])) {
- $field_name = $renamed_fields[key($fields)];
- unset($renamed_fields[key($fields)]);
- } else {
- $field_name = key($fields);
- }
- $query .= "CHANGE $field_name ".$fields[key($fields)]['Declaration'];
- }
- }
- if (count($renamed_fields))
- {
- for($field = 0,reset($renamed_fields);
- $field<count($renamed_fields);
- next($renamed_fields), $field++)
- {
- if (strcmp($query, '')) {
- $query .= ',';
- }
- $old_field_name = $renamed_fields[Key($renamed_fields)];
- $query .= "CHANGE $old_field_name ".$changes['RenamedFields'][$old_field_name]['Declaration'];
- }
- }
- return($db->query("ALTER TABLE $name $query"));
- }
- }
-
- // }}}
- // {{{ listDatabases()
-
- /**
- * list all databases
- *
- * @param object $dbs database object that is extended by this class
- * @return mixed data array on success, a MDB error on failure
- * @access public
- */
- function listDatabases(&$db)
- {
- $result = $db->queryCol('SHOW DATABASES');
- if(MDB::isError($result)) {
- return($result);
- }
- return($result);
- }
-
- // }}}
- // {{{ listUsers()
-
- /**
- * list all users
- *
- * @param object $dbs database object that is extended by this class
- * @return mixed data array on success, a MDB error on failure
- * @access public
- */
- function listUsers(&$db)
- {
- $result = $db->queryCol('SELECT DISTINCT USER FROM USER');
- if(MDB::isError($result)) {
- return($result);
- }
- return($result);
- }
-
- // }}}
- // {{{ listTables()
-
- /**
- * list all tables in the current database
- *
- * @param object $dbs database object that is extended by this class
- * @return mixed data array on success, a MDB error on failure
- * @access public
- */
- function listTables(&$db)
- {
- $table_names = $db->queryCol('SHOW TABLES');
- if(MDB::isError($table_names)) {
- return($table_names);
- }
- for($i = 0, $j = count($table_names), $tables = array(); $i < $j; ++$i)
- {
- if (!$this->_isSequenceName($db, $table_names[$i]))
- $tables[] = $table_names[$i];
- }
- return($tables);
- }
-
- // }}}
- // {{{ listTableFields()
-
- /**
- * list all fields in a tables in the current database
- *
- * @param object $dbs database object that is extended by this class
- * @param string $table name of table that should be used in method
- * @return mixed data array on success, a MDB error on failure
- * @access public
- */
- function listTableFields(&$db, $table)
- {
- $result = $db->query("SHOW COLUMNS FROM $table");
- if(MDB::isError($result)) {
- return($result);
- }
- $columns = $db->getColumnNames($result);
- if(MDB::isError($columns)) {
- $db->freeResult($columns);
- return($columns);
- }
- if(!isset($columns['field'])) {
- $db->freeResult($result);
- return($db->raiseError(MDB_ERROR_MANAGER, NULL, NULL,
- 'List table fields: show columns does not return the table field names'));
- }
- $field_column = $columns['field'];
- for($fields = array(), $field = 0; !$db->endOfResult($result); ++$field) {
- $field_name = $db->fetch($result, $field, $field_column);
- if ($field_name != $db->dummy_primary_key)
- $fields[] = $field_name;
- }
- $db->freeResult($result);
- return($fields);
- }
-
- // }}}
- // {{{ getTableFieldDefinition()
-
- /**
- * get the stucture of a field into an array
- *
- * @param object $dbs database object that is extended by this class
- * @param string $table name of table that should be used in method
- * @param string $field_name name of field that should be used in method
- * @return mixed data array on success, a MDB error on failure
- * @access public
- */
- function getTableFieldDefinition(&$db, $table, $field_name)
- {
- if ($field_name == $db->dummy_primary_key) {
- return($db->raiseError(MDB_ERROR_MANAGER, NULL, NULL,
- 'Get table field definiton: '.$db->dummy_primary_key.' is an hidden column'));
- }
- $result = $db->query("SHOW COLUMNS FROM $table");
- if(MDB::isError($result)) {
- return($result);
- }
- $columns = $db->getColumnNames($result);
- if(MDB::isError($columns)) {
- $db->freeResult($columns);
- return($columns);
- }
- if (!isset($columns[$column = 'field'])
- || !isset($columns[$column = 'type']))
- {
- $db->freeResult($result);
- return($db->raiseError(MDB_ERROR_MANAGER, NULL, NULL,
- 'Get table field definition: show columns does not return the column '.$column));
- }
- $field_column = $columns['field'];
- $type_column = $columns['type'];
- while (is_array($row = $db->fetchInto($result))) {
- if ($field_name == $row[$field_column]) {
- $db_type = strtolower($row[$type_column]);
- $db_type = strtok($db_type, '(), ');
- if ($db_type == 'national') {
- $db_type = strtok('(), ');
- }
- $length = strtok('(), ');
- $decimal = strtok('(), ');
- $type = array();
- switch($db_type) {
- case 'tinyint':
- case 'smallint':
- case 'mediumint':
- case 'int':
- case 'integer':
- case 'bigint':
- $type[0] = 'integer';
- if($length == '1') {
- $type[1] = 'boolean';
- if (preg_match('/^[is|has]/', $field_name)) {
- $type = array_reverse($type);
- }
- }
- break;
- case 'tinytext':
- case 'mediumtext':
- case 'longtext':
- case 'text':
- case 'char':
- case 'varchar':
- $type[0] = 'text';
- if($decimal == 'binary') {
- $type[1] = 'blob';
- } elseif($length == '1') {
- $type[1] = 'boolean';
- if (preg_match('/[is|has]/', $field_name)) {
- $type = array_reverse($type);
- }
- } elseif(strstr($db_type, 'text'))
- $type[1] = 'clob';
- break;
- case 'enum':
- preg_match_all('/\'.+\'/U',$row[$type_column], $matches);
- $length = 0;
- if(is_array($matches)) {
- foreach($matches[0] as $value) {
- $length = max($length, strlen($value)-2);
- }
- }
- unset($decimal);
- case 'set':
- $type[0] = 'text';
- $type[1] = 'integer';
- break;
- case 'date':
- $type[0] = 'date';
- break;
- case 'datetime':
- case 'timestamp':
- $type[0] = 'timestamp';
- break;
- case 'time':
- $type[0] = 'time';
- break;
- case 'float':
- case 'double':
- case 'real':
- $type[0] = 'float';
- break;
- case 'decimal':
- case 'numeric':
- $type[0] = 'decimal';
- break;
- case 'tinyblob':
- case 'mediumblob':
- case 'longblob':
- case 'blob':
- $type[0] = 'blob';
- $type[1] = 'text';
- break;
- case 'year':
- $type[0] = 'integer';
- $type[1] = 'date';
- break;
- default:
- return($db->raiseError(MDB_ERROR_MANAGER, NULL, NULL,
- 'List table fields: unknown database attribute type'));
- }
- unset($notnull);
- if (isset($columns['null'])
- && $row[$columns['null']] != 'YES')
- {
- $notnull = 1;
- }
- unset($default);
- if (isset($columns['default'])
- && isset($row[$columns['default']]))
- {
- $default = $row[$columns['default']];
- }
- $definition = array();
- for($field_choices = array(), $datatype = 0; $datatype < count($type); $datatype++) {
- $field_choices[$datatype] = array('type' => $type[$datatype]);
- if(isset($notnull)) {
- $field_choices[$datatype]['notnull'] = 1;
- }
- if(isset($default)) {
- $field_choices[$datatype]['default'] = $default;
- }
- if($type[$datatype] != 'boolean'
- && $type[$datatype] != 'time'
- && $type[$datatype] != 'date'
- && $type[$datatype] != 'timestamp')
- {
- if(strlen($length)) {
- $field_choices[$datatype]['length'] = $length;
- }
- }
- }
- $definition[0] = $field_choices;
- if (isset($columns['extra'])
- && isset($row[$columns['extra']])
- && $row[$columns['extra']] == 'auto_increment')
- {
- $implicit_sequence = array();
- $implicit_sequence['on'] = array();
- $implicit_sequence['on']['table'] = $table;
- $implicit_sequence['on']['field'] = $field_name;
- $definition[1]['name'] = $table.'_'.$field_name;
- $definition[1]['definition'] = $implicit_sequence;
- }
- if (isset($columns['key'])
- && isset($row[$columns['key']])
- && $row[$columns['key']] == 'PRI')
- {
- // check that its not just a unique field
- if(MDB::isError($indexes = $db->queryAll("SHOW INDEX FROM $table", NULL, MDB_FETCHMODE_ASSOC))) {
- return($indexes);
- }
- $is_primary = FALSE;
- foreach($indexes as $index) {
- if ($index['Key_name'] == 'PRIMARY' && $index['Column_name'] == $field_name) {
- $is_primary = TRUE;
- break;
- }
- }
- if($is_primary) {
- $implicit_index = array();
- $implicit_index['unique'] = 1;
- $implicit_index['FIELDS'][$field_name] = '';
- $definition[2]['name'] = $field_name;
- $definition[2]['definition'] = $implicit_index;
- }
- }
- $db->freeResult($result);
- return($definition);
- }
- }
- if(!$db->options['autofree']) {
- $db->freeResult($result);
- }
- if(MDB::isError($row)) {
- return($row);
- }
- return($db->raiseError(MDB_ERROR_MANAGER, NULL, NULL,
- 'Get table field definition: it was not specified an existing table column'));
- }
-
- // }}}
- // {{{ createIndex()
-
- /**
- * get the stucture of a field into an array
- *
- * @param object $dbs database object that is extended by this class
- * @param string $table name of the table on which the index is to be created
- * @param string $name name of the index to be created
- * @param array $definition associative array that defines properties of the index to be created.
- * Currently, only one property named FIELDS is supported. This property
- * is also an associative with the names of the index fields as array
- * indexes. Each entry of this array is set to another type of associative
- * array that specifies properties of the index that are specific to
- * each field.
- *
- * Currently, only the sorting property is supported. It should be used
- * to define the sorting direction of the index. It may be set to either
- * ascending or descending.
- *
- * Not all DBMS support index sorting direction configuration. The DBMS
- * drivers of those that do not support it ignore this property. Use the
- * function support() to determine whether the DBMS driver can manage indexes.
-
- * Example
- * array(
- * 'FIELDS' => array(
- * 'user_name' => array(
- * 'sorting' => 'ascending'
- * ),
- * 'last_login' => array()
- * )
- * )
- * @return mixed MDB_OK on success, a MDB error on failure
- * @access public
- */
- function createIndex(&$db, $table, $name, $definition)
- {
- $query = "CREATE ".(isset($definition['unique']) ? 'UNIQUE INDEX' : 'INDEX')." $name on $table (";
- for($field = 0, reset($definition['FIELDS']);
- $field < count($definition['FIELDS']);
- $field++, next($definition['FIELDS']))
- {
- if ($field > 0) {
- $query .= ',';
- }
- $query .= key($definition['FIELDS']);
- }
- $query .= ')';
- return($db->query($query));
- }
-
- // }}}
- // {{{ dropIndex()
-
- /**
- * drop existing index
- *
- * @param object $dbs database object that is extended by this class
- * @param string $table name of table that should be used in method
- * @param string $name name of the index to be dropped
- * @return mixed MDB_OK on success, a MDB error on failure
- * @access public
- */
- function dropIndex(&$db, $table, $name)
- {
- return($db->query("ALTER TABLE $table DROP INDEX $name"));
- }
-
- // }}}
- // {{{ listTableIndexes()
-
- /**
- * list all indexes in a table
- *
- * @param object $dbs database object that is extended by this class
- * @param string $table name of table that should be used in method
- * @return mixed data array on success, a MDB error on failure
- * @access public
- */
- function listTableIndexes(&$db, $table)
- {
- if(MDB::isError($result = $db->query("SHOW INDEX FROM $table"))) {
- return($result);
- }
- $indexes_all = $db->fetchCol($result, 'Key_name');
- for($found = $indexes = array(), $index = 0, $indexes_all_cnt = count($indexes_all);
- $index < $indexes_all_cnt;
- $index++)
- {
- if ($indexes_all[$index] != 'PRIMARY'
- && !isset($found[$indexes_all[$index]]))
- {
- $indexes[] = $indexes_all[$index];
- $found[$indexes_all[$index]] = 1;
- }
- }
- return($indexes);
- }
-
- // }}}
- // {{{ getTableIndexDefinition()
-
- /**
- * get the stucture of an index into an array
- *
- * @param object $dbs database object that is extended by this class
- * @param string $table name of table that should be used in method
- * @param string $index_name name of index that should be used in method
- * @return mixed data array on success, a MDB error on failure
- * @access public
- */
- function getTableIndexDefinition(&$db, $table, $index_name)
- {
- if($index_name == 'PRIMARY') {
- return($db->raiseError(MDB_ERROR_MANAGER, NULL, NULL, 'Get table index definition: PRIMARY is an hidden index'));
- }
- if(MDB::isError($result = $db->query("SHOW INDEX FROM $table"))) {
- return($result);
- }
- $definition = array();
- while (is_array($row = $db->fetchInto($result, MDB_FETCHMODE_ASSOC))) {
- $key_name = $row['Key_name'];
- if(!strcmp($index_name, $key_name)) {
- if(!$row['Non_unique']) {
- $definition[$index_name]['unique'] = 1;
- }
- $column_name = $row['Column_name'];
- $definition['FIELDS'][$column_name] = array();
- if(isset($row['Collation'])) {
- $definition['FIELDS'][$column_name]['sorting'] = ($row['Collation'] == 'A' ? 'ascending' : 'descending');
- }
- }
- }
- $db->freeResult($result);
- if (!isset($definition['FIELDS'])) {
- return($db->raiseError(MDB_ERROR_MANAGER, NULL, NULL, 'Get table index definition: it was not specified an existing table index'));
- }
- return($definition);
- }
-
- // }}}
- // {{{ createSequence()
-
- /**
- * create sequence
- *
- * @param object $dbs database object that is extended by this class
- * @param string $seq_name name of the sequence to be created
- * @param string $start start value of the sequence; default is 1
- * @return mixed MDB_OK on success, a MDB error on failure
- * @access public
- */
- function createSequence(&$db, $seq_name, $start)
- {
- $sequence_name = $db->getSequenceName($seq_name);
- $res = $db->query("CREATE TABLE $sequence_name
- (sequence INTEGER DEFAULT UNIQUE, dummy int, PRIMARY KEY(sequence))");
- $res = $db->query("set unique = 1 for $sequence_name");
- if (MDB::isError($res)) {
- return($res);
- }
- if ($start == 1) {
- return(MDB_OK);
- }
- $res = $db->query("INSERT INTO $sequence_name (sequence) VALUES (".($start-1).')');
- if (!MDB::isError($res)) {
- return(MDB_OK);
- }
- // Handle error
- $result = $db->query("DROP TABLE $sequence_name");
- if (MDB::isError($result)) {
- return($db->raiseError(MDB_ERROR, NULL, NULL,
- 'Create sequence: could not drop inconsistent sequence table ('.
- $result->getMessage().' ('.$result->getUserinfo().'))'));
- }
- return($db->raiseError(MDB_ERROR, NULL, NULL,
- 'Create sequence: could not create sequence table ('.
- $res->getMessage().' ('.$res->getUserinfo().'))'));
- }
-
- // }}}
- // {{{ dropSequence()
-
- /**
- * drop existing sequence
- *
- * @param object $dbs database object that is extended by this class
- * @param string $seq_name name of the sequence to be dropped
- * @return mixed MDB_OK on success, a MDB error on failure
- * @access public
- */
- function dropSequence(&$db, $seq_name)
- {
- $sequence_name = $db->getSequenceName($seq_name);
- return($db->query("DROP TABLE $sequence_name CASCADE"));
- }
-
- // }}}
- // {{{ listSequences()
-
- /**
- * list all sequences in the current database
- *
- * @param object $dbs database object that is extended by this class
- * @return mixed data array on success, a MDB error on failure
- * @access public
- */
- function listSequences(&$db)
- {
- $table_names = $db->queryCol('SHOW TABLES');
- if(MDB::isError($table_names)) {
- return($table_names);
- }
- for($i = 0, $j = count($table_names), $sequences = array(); $i < $j; ++$i)
- {
- if ($sqn = $this->_isSequenceName($db, $table_names[$i]))
- $sequences[] = $sqn;
- }
- return($sequences);
- }
-
- // }}}
- }
-
- };
- ?>
-