| // +----------------------------------------------------------------------+ // // $Id$ // require_once 'MDB2/Driver/Reverse/Common.php'; /** * MDB2 InterbaseBase driver for the reverse engineering module * * @package MDB2 * @category Database * @author Lukas Smith */ class MDB2_Driver_Reverse_ibase extends MDB2_Driver_Reverse_Common { // }}} // {{{ tableInfo() /** * Returns information about a table or a result set * * NOTE: only supports 'table' and 'flags' if $result * is a table name. * * @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 $mode a valid tableInfo mode * * @return array an associative array with the information requested. * A MDB2_Error object on failure. * * @see MDB2_Driver_Common::tableInfo() */ function tableInfo($result, $mode = null) { $db =& $this->getDBInstance(); if (PEAR::isError($db)) { return $db; } if (is_string($result)) { /* * Probably received a table name. * Create a result resource identifier. */ $id = $db->_doQuery("SELECT * FROM $result WHERE 1=0"); if (PEAR::isError($id)) { return $id; } $got_string = true; } elseif (MDB2::isResultCommon($result)) { /* * Probably received a result object. * Extract the result resource identifier. */ $id = $result->getResource(); $got_string = false; } else { /* * Probably received a result resource identifier. * Copy it. * Deprecated. Here for compatibility only. */ $id = $result; $got_string = false; } if (!is_resource($id)) { return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA); } if ($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'; } $count = @ibase_num_fields($id); $res = array(); if ($mode) { $res['num_fields'] = $count; } for ($i = 0; $i < $count; $i++) { $info = @ibase_field_info($id, $i); $res[$i] = array( 'table' => $got_string ? $case_func($result) : '', 'name' => $case_func($info['name']), 'type' => $info['type'], 'len' => $info['length'], 'flags' => ($got_string) ? $this->_ibaseFieldFlags($info['name'], $result) : '', ); if ($mode & MDB2_TABLEINFO_ORDER) { $res['order'][$res[$i]['name']] = $i; } if ($mode & MDB2_TABLEINFO_ORDERTABLE) { $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i; } } // free the result only if we were called on a table if ($got_string) { @ibase_free_result($id); } return $res; } // }}} // {{{ _ibaseFieldFlags() /** * Get the column's flags * * Supports "primary_key", "unique_key", "not_null", "default", * "computed" and "blob". * * @param string $field_name the name of the field * @param string $table_name the name of the table * * @return string the flags * * @access protected */ function _ibaseFieldFlags($field_name, $table_name) { $db =& $this->getDBInstance(); if (PEAR::isError($db)) { return $db; } $query = 'SELECT R.RDB$CONSTRAINT_TYPE CTYPE' .' FROM RDB$INDEX_SEGMENTS I' .' JOIN RDB$RELATION_CONSTRAINTS R ON I.RDB$INDEX_NAME=R.RDB$INDEX_NAME' .' WHERE I.RDB$FIELD_NAME=\'' . $field_name . '\'' .' AND UPPER(R.RDB$RELATION_NAME)=\'' . strtoupper($table_name) . '\''; $result = $db->_doQuery($query); if (PEAR::isError($result)) { return $result; } $flags = ''; if ($obj = @ibase_fetch_object($result)) { @ibase_free_result($result); if (isset($obj->CTYPE) && trim($obj->CTYPE) == 'PRIMARY KEY') { $flags.= 'primary_key '; } if (isset($obj->CTYPE) && trim($obj->CTYPE) == 'UNIQUE') { $flags.= 'unique_key '; } } $query = 'SELECT R.RDB$NULL_FLAG AS NFLAG,' .' R.RDB$DEFAULT_SOURCE AS DSOURCE,' .' F.RDB$FIELD_TYPE AS FTYPE,' .' F.RDB$COMPUTED_SOURCE AS CSOURCE' .' FROM RDB$RELATION_FIELDS R ' .' JOIN RDB$FIELDS F ON R.RDB$FIELD_SOURCE=F.RDB$FIELD_NAME' .' WHERE UPPER(R.RDB$RELATION_NAME)=\'' . strtoupper($table_name) . '\'' .' AND R.RDB$FIELD_NAME=\'' . $field_name . '\''; $result = $db->_doQuery($query); if (PEAR::isError($result)) { return $result; } if ($obj = @ibase_fetch_object($result)) { @ibase_free_result($result); if (isset($obj->NFLAG)) { $flags.= 'not_null '; } if (isset($obj->DSOURCE)) { $flags.= 'default '; } if (isset($obj->CSOURCE)) { $flags.= 'computed '; } if (isset($obj->FTYPE) && $obj->FTYPE == 261) { $flags.= 'blob '; } } return trim($flags); } } ?>