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- <?php
- // +----------------------------------------------------------------------+
- // | PHP Version 4 |
- // +----------------------------------------------------------------------+
- // | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox, |
- // | Stig. S. Bakken, Lukas Smith |
- // | 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@backendmedia.com> |
- // +----------------------------------------------------------------------+
- //
- // $Id: Common.php,v 1.33.4.1 2004/01/08 13:43:01 lsmith Exp $
- //
-
- if(!defined('MDB_MANAGER_COMMON_INCLUDED'))
- {
- define('MDB_MANAGER_COMMON_INCLUDED', 1);
-
- /**
- * Base class for the management modules that is extended by each MDB driver
- *
- * @package MDB
- * @category Database
- * @access private
- * @author Lukas Smith <smith@backendmedia.com>
- */
-
- class MDB_Manager_Common
- {
- // }}}
- // {{{ getFieldDeclaration()
-
- /**
- * get declaration of a field
- *
- * @param object $dbs database object that is extended by this class
- * @param string $field_name name of the field to be created
- * @param string $field associative array with the name of the properties
- * of the field being declared as array indexes. Currently, the types
- * of supported field properties are as follows:
- *
- * default
- * Boolean value to be used as default for this field.
- *
- * notnull
- * Boolean flag that indicates whether this field is constrained
- * to not be set to NULL.
- * @return mixed string on success, a MDB error on failure
- * @access public
- */
- function getFieldDeclaration(&$db, $field_name, $field)
- {
- if (!strcmp($field_name, '')) {
- return($db->raiseError(MDB_ERROR_NOSUCHFIELD, NULL, NULL,
- 'Get field: it was not specified a valid field name ("'.$field_name.'")'));
- }
- switch($field['type']) {
- case 'integer':
- return($db->getIntegerDeclaration($field_name, $field));
- break;
- case 'text':
- return($db->getTextDeclaration($field_name, $field));
- break;
- case 'clob':
- return($db->getClobDeclaration($field_name, $field));
- break;
- case 'blob':
- return($db->getBlobDeclaration($field_name, $field));
- break;
- case 'boolean':
- return($db->getBooleanDeclaration($field_name, $field));
- break;
- case 'date':
- return($db->getDateDeclaration($field_name, $field));
- break;
- case 'timestamp':
- return($db->getTimestampDeclaration($field_name, $field));
- break;
- case 'time':
- return($db->getTimeDeclaration($field_name, $field));
- break;
- case 'float':
- return($db->getFloatDeclaration($field_name, $field));
- break;
- case 'decimal':
- return($db->getDecimalDeclaration($field_name, $field));
- break;
- default:
- return($db->raiseError(MDB_ERROR_UNSUPPORTED, NULL, NULL,
- 'Get field: type "'.$field['type'].'" is not yet supported'));
- break;
- }
- }
-
- // }}}
- // {{{ getFieldDeclarationList()
-
- /**
- * get declaration of a number of field in bulk
- *
- * @param object $dbs database object that is extended by this class
- * @param string $fields a multidimensional associative array.
- The first dimension determines the field name, while the second
- dimension is keyed with the name of the properties
- * of the field being declared as array indexes. Currently, the types
- * of supported field properties are as follows:
- *
- * default
- * Boolean value to be used as default for this field.
- *
- * notnull
- * Boolean flag that indicates whether this field is constrained
- * to not be set to NULL.
- *
- * default
- * Boolean value to be used as default for this field.
- *
- * notnull
- * Boolean flag that indicates whether this field is constrained
- * to not be set to NULL.
- * @return mixed string on success, a MDB error on failure
- * @access public
- */
- function getFieldDeclarationList(&$db, $fields)
- {
- if(is_array($fields)) {
- foreach($fields as $field_name => $field) {
- $query = $db->getFieldDeclaration($field_name, $field);
- if (MDB::isError($query)) {
- return($query);
- }
- $query_fields[] = $query;
- }
- return(implode(',',$query_fields));
- }
- return(PEAR::raiseError(NULL, MDB_ERROR_MANAGER, NULL, NULL,
- 'the definition of the table "'.$table_name.'" does not contain any fields', 'MDB_Error', TRUE));
- }
-
- // }}}
- // {{{ _isSequenceName()
- /**
- * list all tables in the current database
- *
- * @param object $dbs database object that is extended by this class
- * @param string $sqn string that containts name of a potential sequence
- * @return mixed name of the sequence if $sqn is a name of a sequence, else FALSE
- * @access private
- */
- function _isSequenceName(&$db, $sqn)
- {
- $seq_pattern = '/^'.preg_replace('/%s/', '([a-z0-9_]+)', $db->options['seqname_format']).'$/i';
- $seq_name = preg_replace($seq_pattern, '\\1', $sqn);
- if($seq_name && $sqn == $db->getSequenceName($seq_name)) {
- return($seq_name);
- }
- return(FALSE);
- }
-
- // }}}
- // {{{ 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, $database)
- {
- return($db->raiseError(MDB_ERROR_UNSUPPORTED, NULL, NULL,
- 'Create database: database creation is not supported'));
- }
-
- // }}}
- // {{{ 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, $database)
- {
- return($db->raiseError(MDB_ERROR_UNSUPPORTED, NULL, NULL,
- 'Drop database: database dropping is not supported'));
- }
-
- // }}}
- // {{{ 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($query_fields);
- }
- return($db->query("CREATE TABLE $name ($query_fields)"));
- }
-
- // }}}
- // {{{ 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"));
- }
-
- // }}}
- // {{{ 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 $check indicates whether the function should just check if the DBMS driver
- * can perform the requested table alterations if the value is true or
- * actually perform them otherwise.
- * @return mixed MDB_OK on success, a MDB error on failure
- * @access public
- */
- function alterTable(&$db, $name, $changes, $check)
- {
- return($db->raiseError(MDB_ERROR_UNSUPPORTED, NULL, NULL,
- 'Alter table: database table alterations are not supported'));
- }
-
- // }}}
- // {{{ 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)
- {
- return($db->raiseError(MDB_ERROR_NOT_CAPABLE, NULL, NULL,
- 'List Databases: list databases is not supported'));
- }
-
- // }}}
- // {{{ 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)
- {
- return($db->raiseError(MDB_ERROR_NOT_CAPABLE, NULL, NULL,
- 'List User: list user is not supported'));
- }
-
- // }}}
- // {{{ listViews()
-
- /**
- * list all views in the current database
- *
- * @param object $dbs database object that is extended by this class
- * @return mixed data array on success, a MDB error on failure
- * @access public
- */
- function listViews(&$db)
- {
- return($db->raiseError(MDB_ERROR_NOT_CAPABLE, NULL, NULL,
- 'List View: list view is not supported'));
- }
-
- // }}}
- // {{{ listFunctions()
-
- /**
- * list all functions in the current database
- *
- * @param object $dbs database object that is extended by this class
- * @return mixed data array on success, a MDB error on failure
- * @access public
- */
- function listFunctions(&$db)
- {
- return($db->raiseError(MDB_ERROR_NOT_CAPABLE, NULL, NULL,
- 'List Function: list function is not supported'));
- }
-
- // }}}
- // {{{ 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)
- {
- return($db->raiseError(MDB_ERROR_NOT_CAPABLE, NULL, NULL,
- 'List tables: list tables is not supported'));
- }
-
- // }}}
- // {{{ 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, $table)
- {
- return($db->raiseError(MDB_ERROR_NOT_CAPABLE, NULL, NULL,
- 'List table fields: list table fields is not supported'));
- }
-
- // }}}
- // {{{ 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 $fields name of field that should be used in method
- * @return mixed data array on success, a MDB error on failure
- * @access public
- */
- function getTableFieldDefinition(&$db, $table, $field)
- {
- return($db->raiseError(MDB_ERROR_NOT_CAPABLE, NULL, NULL,
- 'Get table field definition: table field definition is not supported'));
- }
-
- // }}}
- // {{{ 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)
- {
- $query = 'CREATE';
- if (isset($definition['unique'])) {
- $query .= ' UNIQUE';
- }
- $query .= " INDEX $name ON $table (";
- for($field = 0,reset($definition['FIELDS']);
- $field<count($definition['FIELDS']); $field++,next($definition['FIELDS']))
- {
- if ($field>0) {
- $query.= ', ';
- }
- $field_name = Key($definition['FIELDS']);
- $query.= $field_name;
- if ($db->support('IndexSorting') && isset($definition['FIELDS'][$field_name]['sorting'])) {
- switch($definition['FIELDS'][$field_name]['sorting']) {
- case 'ascending':
- $query.= ' ASC';
- break;
- case 'descending':
- $query.= ' DESC';
- break;
- }
- }
- }
- $query.= ')';
- return($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("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, $table)
- {
- return($db->raiseError(MDB_ERROR_NOT_CAPABLE, NULL, NULL,
- 'List table indexes: List Indexes is not supported'));
- }
-
- // }}}
- // {{{ 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 $index name of index that should be used in method
- * @return mixed data array on success, a MDB error on failure
- * @access public
- */
- function getTableIndexDefinition(&$db, $table, $index)
- {
- return($db->raiseError(MDB_ERROR_NOT_CAPABLE, NULL, NULL,
- 'Get table index definition: getting index definition is not supported'));
- }
-
- // }}}
- // {{{ 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, $name, $start)
- {
- return($db->raiseError(MDB_ERROR_NOT_CAPABLE, NULL, NULL,
- 'Create Sequence: sequence creation not supported'));
- }
-
- // }}}
- // {{{ 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, $name)
- {
- return($db->raiseError(MDB_ERROR_NOT_CAPABLE, NULL, NULL,
- 'Drop Sequence: sequence dropping not supported'));
- }
-
- // }}}
- // {{{ 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)
- {
- return($db->raiseError(MDB_ERROR_NOT_CAPABLE, NULL, NULL,
- 'List sequences: List sequences is not supported'));
- }
-
- // }}}
- // {{{ getSequenceDefinition()
-
- /**
- * get the stucture of a sequence into an array
- *
- * @param object $dbs database object that is extended by this class
- * @param string $sequence name of sequence that should be used in method
- * @return mixed data array on success, a MDB error on failure
- * @access public
- */
-
- // }}}
- // {{{ getSequenceDefinition()
-
- /**
- * get the stucture of a sequence into an array
- *
- * @param object $dbs database object that is extended by this class
- * @param string $sequence name of sequence that should be used in method
- * @return mixed data array on success, a MDB error on failure
- * @access public
- */
- function getSequenceDefinition(&$db, $sequence)
- {
- $start = $db->currId($sequence);
- if (MDB::isError($start)) {
- return($start);
- }
- if ($db->support('CurrId')) {
- $start++;
- } else {
- $db->warnings[] = 'database does not support getting current
- sequence value,the sequence value was incremented';
- }
- $definition = array();
- if($start != 1) {
- $definition = array('start' => $start);
- }
- return($definition);
- }
- }
-
- };
- ?>
-