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<?php
// +----------------------------------------------------------------------+
// | PHP versions 4 and 5 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox, |
// | Stig. S. Bakken, Lukas Smith |
// | All rights reserved. |
// +----------------------------------------------------------------------+
// | MDB2 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@pooteeweet.org> |
// +----------------------------------------------------------------------+
//
// $Id: mysql.php 295587 2010-02-28 17:16:38Z quipo $
//
require_once 'MDB2/Driver/Reverse/Common.php';
/**
* MDB2 MySQL driver for the schema reverse engineering module
*
* @package MDB2
* @category Database
* @author Lukas Smith <smith@pooteeweet.org>
* @author Lorenzo Alberton <l.alberton@quipo.it>
*/
class MDB2_Driver_Reverse_mysql extends MDB2_Driver_Reverse_Common
{
// {{{ getTableFieldDefinition()
/**
* Get the structure of a field into an array
*
* @param string $table_name name of table that should be used in method
* @param string $field_name name of field that should be used in method
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function getTableFieldDefinition($table_name, $field_name)
{
$db = $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
$result = $db->loadModule('Datatype', null, true);
if (PEAR::isError($result)) {
return $result;
}
list($schema, $table) = $this->splitTableSchema($table_name);
$table = $db->quoteIdentifier($table, true);
$query = "SHOW FULL COLUMNS FROM $table LIKE ".$db->quote($field_name);
$columns = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC);
if (PEAR::isError($columns)) {
return $columns;
}
foreach ($columns as $column) {
$column = array_change_key_case($column, CASE_LOWER);
$column['name'] = $column['field'];
unset($column['field']);
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
if ($db->options['field_case'] == CASE_LOWER) {
$column['name'] = strtolower($column['name']);
} else {
$column['name'] = strtoupper($column['name']);
}
} else {
$column = array_change_key_case($column, $db->options['field_case']);
}
if ($field_name == $column['name']) {
$mapped_datatype = $db->datatype->mapNativeDatatype($column);
if (PEAR::isError($mapped_datatype)) {
return $mapped_datatype;
}
list($types, $length, $unsigned, $fixed) = $mapped_datatype;
$notnull = false;
if (empty($column['null']) || $column['null'] !== 'YES') {
$notnull = true;
}
$default = false;
if (array_key_exists('default', $column)) {
$default = $column['default'];
if ((null === $default) && $notnull) {
$default = '';
}
}
$definition[0] = array(
'notnull' => $notnull,
'nativetype' => preg_replace('/^([a-z]+)[^a-z].*/i', '\\1', $column['type'])
);
$autoincrement = false;
if (!empty($column['extra'])) {
if ($column['extra'] == 'auto_increment') {
$autoincrement = true;
} else {
$definition[0]['extra'] = $column['extra'];
}
}
$collate = null;
if (!empty($column['collation'])) {
$collate = $column['collation'];
$charset = preg_replace('/(.+?)(_.+)?/', '$1', $collate);
}
if (null !== $length) {
$definition[0]['length'] = $length;
}
if (null !== $unsigned) {
$definition[0]['unsigned'] = $unsigned;
}
if (null !== $fixed) {
$definition[0]['fixed'] = $fixed;
}
if ($default !== false) {
$definition[0]['default'] = $default;
}
if ($autoincrement !== false) {
$definition[0]['autoincrement'] = $autoincrement;
}
if (null !== $collate) {
$definition[0]['collate'] = $collate;
$definition[0]['charset'] = $charset;
}
foreach ($types as $key => $type) {
$definition[$key] = $definition[0];
if ($type == 'clob' || $type == 'blob') {
unset($definition[$key]['default']);
} elseif ($type == 'timestamp' && $notnull && empty($definition[$key]['default'])) {
$definition[$key]['default'] = '0000-00-00 00:00:00';
}
$definition[$key]['type'] = $type;
$definition[$key]['mdb2type'] = $type;
}
return $definition;
}
}
return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
'it was not specified an existing table column', __FUNCTION__);
}
// }}}
// {{{ getTableIndexDefinition()
/**
* Get the structure of an index into an array
*
* @param string $table_name name of table that should be used in method
* @param string $index_name name of index that should be used in method
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function getTableIndexDefinition($table_name, $index_name)
{
$db = $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
list($schema, $table) = $this->splitTableSchema($table_name);
$table = $db->quoteIdentifier($table, true);
$query = "SHOW INDEX FROM $table /*!50002 WHERE Key_name = %s */";
$index_name_mdb2 = $db->getIndexName($index_name);
$result = $db->queryRow(sprintf($query, $db->quote($index_name_mdb2)));
if (!PEAR::isError($result) && (null !== $result)) {
// apply 'idxname_format' only if the query succeeded, otherwise
// fallback to the given $index_name, without transformation
$index_name = $index_name_mdb2;
}
$result = $db->query(sprintf($query, $db->quote($index_name)));
if (PEAR::isError($result)) {
return $result;
}
$colpos = 1;
$definition = array();
while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
$row = array_change_key_case($row, CASE_LOWER);
$key_name = $row['key_name'];
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
if ($db->options['field_case'] == CASE_LOWER) {
$key_name = strtolower($key_name);
} else {
$key_name = strtoupper($key_name);
}
}
if ($index_name == $key_name) {
if (!$row['non_unique']) {
return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
$index_name . ' is not an existing table index', __FUNCTION__);
}
$column_name = $row['column_name'];
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
if ($db->options['field_case'] == CASE_LOWER) {
$column_name = strtolower($column_name);
} else {
$column_name = strtoupper($column_name);
}
}
$definition['fields'][$column_name] = array(
'position' => $colpos++
);
if (!empty($row['collation'])) {
$definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'A'
? 'ascending' : 'descending');
}
}
}
$result->free();
if (empty($definition['fields'])) {
return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
$index_name . ' is not an existing table index', __FUNCTION__);
}
return $definition;
}
// }}}
// {{{ getTableConstraintDefinition()
/**
* Get the structure of a constraint into an array
*
* @param string $table_name name of table that should be used in method
* @param string $constraint_name name of constraint that should be used in method
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function getTableConstraintDefinition($table_name, $constraint_name)
{
$db = $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
list($schema, $table) = $this->splitTableSchema($table_name);
$constraint_name_original = $constraint_name;
$table = $db->quoteIdentifier($table, true);
$query = "SHOW INDEX FROM $table /*!50002 WHERE Key_name = %s */";
if (strtolower($constraint_name) != 'primary') {
$constraint_name_mdb2 = $db->getIndexName($constraint_name);
$result = $db->queryRow(sprintf($query, $db->quote($constraint_name_mdb2)));
if (!PEAR::isError($result) && (null !== $result)) {
// apply 'idxname_format' only if the query succeeded, otherwise
// fallback to the given $index_name, without transformation
$constraint_name = $constraint_name_mdb2;
}
}
$result = $db->query(sprintf($query, $db->quote($constraint_name)));
if (PEAR::isError($result)) {
return $result;
}
$colpos = 1;
//default values, eventually overridden
$definition = array(
'primary' => false,
'unique' => false,
'foreign' => false,
'check' => false,
'fields' => array(),
'references' => array(
'table' => '',
'fields' => array(),
),
'onupdate' => '',
'ondelete' => '',
'match' => '',
'deferrable' => false,
'initiallydeferred' => false,
);
while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
$row = array_change_key_case($row, CASE_LOWER);
$key_name = $row['key_name'];
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
if ($db->options['field_case'] == CASE_LOWER) {
$key_name = strtolower($key_name);
} else {
$key_name = strtoupper($key_name);
}
}
if ($constraint_name == $key_name) {
if ($row['non_unique']) {
//FOREIGN KEY?
return $this->_getTableFKConstraintDefinition($table, $constraint_name_original, $definition);
}
if ($row['key_name'] == 'PRIMARY') {
$definition['primary'] = true;
} elseif (!$row['non_unique']) {
$definition['unique'] = true;
}
$column_name = $row['column_name'];
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
if ($db->options['field_case'] == CASE_LOWER) {
$column_name = strtolower($column_name);
} else {
$column_name = strtoupper($column_name);
}
}
$definition['fields'][$column_name] = array(
'position' => $colpos++
);
if (!empty($row['collation'])) {
$definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'A'
? 'ascending' : 'descending');
}
}
}
$result->free();
if (empty($definition['fields'])) {
return $this->_getTableFKConstraintDefinition($table, $constraint_name_original, $definition);
}
return $definition;
}
// }}}
// {{{ _getTableFKConstraintDefinition()
/**
* Get the FK definition from the CREATE TABLE statement
*
* @param string $table table name
* @param string $constraint_name constraint name
* @param array $definition default values for constraint definition
*
* @return array|PEAR_Error
* @access private
*/
function _getTableFKConstraintDefinition($table, $constraint_name, $definition)
{
$db = $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
//Use INFORMATION_SCHEMA instead?
//SELECT *
// FROM INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS
// WHERE CONSTRAINT_SCHEMA = '$dbname'
// AND TABLE_NAME = '$table'
// AND CONSTRAINT_NAME = '$constraint_name';
$query = 'SHOW CREATE TABLE '. $db->escape($table);
$constraint = $db->queryOne($query, 'text', 1);
if (!PEAR::isError($constraint) && !empty($constraint)) {
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
if ($db->options['field_case'] == CASE_LOWER) {
$constraint = strtolower($constraint);
} else {
$constraint = strtoupper($constraint);
}
}
$constraint_name_original = $constraint_name;
$constraint_name = $db->getIndexName($constraint_name);
$pattern = '/\bCONSTRAINT\s+'.$constraint_name.'\s+FOREIGN KEY\s+\(([^\)]+)\) \bREFERENCES\b ([^\s]+) \(([^\)]+)\)(?: ON DELETE ([^\s]+))?(?: ON UPDATE ([^\s]+))?/i';
if (!preg_match($pattern, str_replace('`', '', $constraint), $matches)) {
//fallback to original constraint name
$pattern = '/\bCONSTRAINT\s+'.$constraint_name_original.'\s+FOREIGN KEY\s+\(([^\)]+)\) \bREFERENCES\b ([^\s]+) \(([^\)]+)\)(?: ON DELETE ([^\s]+))?(?: ON UPDATE ([^\s]+))?/i';
}
if (preg_match($pattern, str_replace('`', '', $constraint), $matches)) {
$definition['foreign'] = true;
$column_names = explode(',', $matches[1]);
$referenced_cols = explode(',', $matches[3]);
$definition['references'] = array(
'table' => $matches[2],
'fields' => array(),
);
$colpos = 1;
foreach ($column_names as $column_name) {
$definition['fields'][trim($column_name)] = array(
'position' => $colpos++
);
}
$colpos = 1;
foreach ($referenced_cols as $column_name) {
$definition['references']['fields'][trim($column_name)] = array(
'position' => $colpos++
);
}
$definition['ondelete'] = empty($matches[4]) ? 'RESTRICT' : strtoupper($matches[4]);
$definition['onupdate'] = empty($matches[5]) ? 'RESTRICT' : strtoupper($matches[5]);
$definition['match'] = 'SIMPLE';
return $definition;
}
}
return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
$constraint_name . ' is not an existing table constraint', __FUNCTION__);
}
// }}}
// {{{ getTriggerDefinition()
/**
* Get the structure of a trigger into an array
*
* EXPERIMENTAL
*
* WARNING: this function is experimental and may change the returned value
* at any time until labelled as non-experimental
*
* @param string $trigger name of trigger that should be used in method
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function getTriggerDefinition($trigger)
{
$db = $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
$query = 'SELECT trigger_name,
event_object_table AS table_name,
action_statement AS trigger_body,
action_timing AS trigger_type,
event_manipulation AS trigger_event
FROM information_schema.triggers
WHERE trigger_name = '. $db->quote($trigger, 'text');
$types = array(
'trigger_name' => 'text',
'table_name' => 'text',
'trigger_body' => 'text',
'trigger_type' => 'text',
'trigger_event' => 'text',
);
$def = $db->queryRow($query, $types, MDB2_FETCHMODE_ASSOC);
if (PEAR::isError($def)) {
return $def;
}
$def['trigger_comment'] = '';
$def['trigger_enabled'] = true;
return $def;
}
// }}}
// {{{ tableInfo()
/**
* Returns information about a table or a result set
*
* @param object|string $result MDB2_result object from a query or a
* string containing the name of a table.
* While this also accepts a query result
* resource identifier, this behavior is
* deprecated.
* @param int $mode a valid tableInfo mode
*
* @return array an associative array with the information requested.
* A MDB2_Error object on failure.
*
* @see MDB2_Driver_Common::setOption()
*/
function tableInfo($result, $mode = null)
{
if (is_string($result)) {
return parent::tableInfo($result, $mode);
}
$db = $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
$resource = MDB2::isResultCommon($result) ? $result->getResource() : $result;
if (!is_resource($resource)) {
return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
'Could not generate result resource', __FUNCTION__);
}
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
if ($db->options['field_case'] == CASE_LOWER) {
$case_func = 'strtolower';
} else {
$case_func = 'strtoupper';
}
} else {
$case_func = 'strval';
}
$count = @mysql_num_fields($resource);
$res = array();
if ($mode) {
$res['num_fields'] = $count;
}
$db->loadModule('Datatype', null, true);
for ($i = 0; $i < $count; $i++) {
$res[$i] = array(
'table' => $case_func(@mysql_field_table($resource, $i)),
'name' => $case_func(@mysql_field_name($resource, $i)),
'type' => @mysql_field_type($resource, $i),
'length' => @mysql_field_len($resource, $i),
'flags' => @mysql_field_flags($resource, $i),
);
if ($res[$i]['type'] == 'string') {
$res[$i]['type'] = 'char';
} elseif ($res[$i]['type'] == 'unknown') {
$res[$i]['type'] = 'decimal';
}
$mdb2type_info = $db->datatype->mapNativeDatatype($res[$i]);
if (PEAR::isError($mdb2type_info)) {
return $mdb2type_info;
}
$res[$i]['mdb2type'] = $mdb2type_info[0][0];
if ($mode & MDB2_TABLEINFO_ORDER) {
$res['order'][$res[$i]['name']] = $i;
}
if ($mode & MDB2_TABLEINFO_ORDERTABLE) {
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
}
}
return $res;
}
}
?>

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