/**
* Get existing data on transformations applied for
* columns in a particular table
*
* @param string $db Database name looking for
*
* @return \mysqli_result Result of executed SQL query
*/
public function getExistingTransformationData($db)
{
$cfgRelation = \PMA_getRelationsParam();
// Get the existing transformation details of the same database
// from pma__column_info table
$pma_transformation_sql = sprintf("SELECT * FROM %s.%s WHERE `db_name` = '%s'", \PMA_Util::backquote($cfgRelation['db']), \PMA_Util::backquote($cfgRelation['column_info']), \PMA_Util::sqlAddSlashes($db));
return $this->dbi->tryQuery($pma_transformation_sql);
}
/**
* Function to handle foreign key updates
*
* @param array $destination_foreign_db destination foreign database
* @param array $multi_edit_columns_name multi edit column names
* @param array $destination_foreign_table destination foreign table
* @param array $destination_foreign_column destination foreign column
* @param array $options_array options array
* @param string $table current table
* @param array $existrel_foreign db, table, column
*
* @return array
*/
public function updateForeignKeys($destination_foreign_db, $multi_edit_columns_name, $destination_foreign_table, $destination_foreign_column, $options_array, $table, $existrel_foreign)
{
$html_output = '';
$preview_sql_data = '';
$display_query = '';
$seen_error = false;
foreach ($destination_foreign_db as $master_field_md5 => $foreign_db) {
$create = false;
$drop = false;
// Map the fieldname's md5 back to its real name
$master_field = $multi_edit_columns_name[$master_field_md5];
$foreign_table = $destination_foreign_table[$master_field_md5];
$foreign_field = $destination_foreign_column[$master_field_md5];
if (isset($existrel_foreign[$master_field_md5]['ref_db_name'])) {
$ref_db_name = $existrel_foreign[$master_field_md5]['ref_db_name'];
} else {
$ref_db_name = $GLOBALS['db'];
}
$empty_fields = false;
foreach ($master_field as $key => $one_field) {
if (!empty($one_field) && empty($foreign_field[$key]) || empty($one_field) && !empty($foreign_field[$key])) {
$empty_fields = true;
}
if (empty($one_field) && empty($foreign_field[$key])) {
unset($master_field[$key]);
unset($foreign_field[$key]);
}
}
if (!empty($foreign_db) && !empty($foreign_table) && !$empty_fields) {
if (isset($existrel_foreign[$master_field_md5])) {
$constraint_name = $existrel_foreign[$master_field_md5]['constraint'];
$on_delete = !empty($existrel_foreign[$master_field_md5]['on_delete']) ? $existrel_foreign[$master_field_md5]['on_delete'] : 'RESTRICT';
$on_update = !empty($existrel_foreign[$master_field_md5]['on_update']) ? $existrel_foreign[$master_field_md5]['on_update'] : 'RESTRICT';
if ($ref_db_name != $foreign_db || $existrel_foreign[$master_field_md5]['ref_table_name'] != $foreign_table || $existrel_foreign[$master_field_md5]['ref_index_list'] != $foreign_field || $existrel_foreign[$master_field_md5]['index_list'] != $master_field || $_REQUEST['constraint_name'][$master_field_md5] != $constraint_name || $_REQUEST['on_delete'][$master_field_md5] != $on_delete || $_REQUEST['on_update'][$master_field_md5] != $on_update) {
// another foreign key is already defined for this field
// or an option has been changed for ON DELETE or ON UPDATE
$drop = true;
$create = true;
}
// end if... else....
} else {
// no key defined for this field(s)
$create = true;
}
} elseif (isset($existrel_foreign[$master_field_md5])) {
$drop = true;
}
// end if... else....
$tmp_error_drop = false;
if ($drop) {
$drop_query = 'ALTER TABLE ' . PMA_Util::backquote($table) . ' DROP FOREIGN KEY ' . PMA_Util::backquote($existrel_foreign[$master_field_md5]['constraint']) . ';';
if (!isset($_REQUEST['preview_sql'])) {
$display_query .= $drop_query . "\n";
$this->_dbi->tryQuery($drop_query);
$tmp_error_drop = $this->_dbi->getError();
if (!empty($tmp_error_drop)) {
$seen_error = true;
$html_output .= PMA_Util::mysqlDie($tmp_error_drop, $drop_query, false, '', false);
continue;
}
} else {
$preview_sql_data .= $drop_query . "\n";
}
}
$tmp_error_create = false;
if (!$create) {
continue;
}
$create_query = $this->_getSQLToCreateForeignKey($table, $master_field, $foreign_db, $foreign_table, $foreign_field, $_REQUEST['constraint_name'][$master_field_md5], $options_array[$_REQUEST['on_delete'][$master_field_md5]], $options_array[$_REQUEST['on_update'][$master_field_md5]]);
if (!isset($_REQUEST['preview_sql'])) {
$display_query .= $create_query . "\n";
$this->_dbi->tryQuery($create_query);
$tmp_error_create = $this->_dbi->getError();
if (!empty($tmp_error_create)) {
$seen_error = true;
if (substr($tmp_error_create, 1, 4) == '1005') {
$message = PMA_Message::error(__('Error creating foreign key on %1$s (check data ' . 'types)'));
$message->addParam(implode(', ', $master_field));
$html_output .= $message->getDisplay();
} else {
$html_output .= PMA_Util::mysqlDie($tmp_error_create, $create_query, false, '', false);
}
$html_output .= PMA_Util::showMySQLDocu('InnoDB_foreign_key_constraints') . "\n";
}
} else {
$preview_sql_data .= $create_query . "\n";
}
// this is an alteration and the old constraint has been dropped
// without creation of a new one
if ($drop && $create && empty($tmp_error_drop) && !empty($tmp_error_create)) {
// a rollback may be better here
$sql_query_recreate = '# Restoring the dropped constraint...' . "\n";
$sql_query_recreate .= $this->_getSQLToCreateForeignKey($table, $master_field, $existrel_foreign[$master_field_md5]['ref_db_name'], $existrel_foreign[$master_field_md5]['ref_table_name'], $existrel_foreign[$master_field_md5]['ref_index_list'], $existrel_foreign[$master_field_md5]['constraint'], $options_array[$existrel_foreign[$master_field_md5]['on_delete']], $options_array[$existrel_foreign[$master_field_md5]['on_update']]);
if (!isset($_REQUEST['preview_sql'])) {
$display_query .= $sql_query_recreate . "\n";
$this->_dbi->tryQuery($sql_query_recreate);
} else {
$preview_sql_data .= $sql_query_recreate;
}
}
}
// end foreach
return array($html_output, $preview_sql_data, $display_query, $seen_error);
}
/**
* Handle compatibility options
*
* @param PMA_DatabaseInterface $dbi Database interface
* @param array $request Request array
*
* @return void
*/
private function _setSQLMode($dbi, $request)
{
$sql_modes = array();
if (isset($request['sql_compatibility']) && 'NONE' != $request['sql_compatibility']) {
$sql_modes[] = $request['sql_compatibility'];
}
if (isset($request['sql_no_auto_value_on_zero'])) {
$sql_modes[] = 'NO_AUTO_VALUE_ON_ZERO';
}
if (count($sql_modes) > 0) {
$dbi->tryQuery('SET SQL_MODE="' . implode(',', $sql_modes) . '"');
}
}
