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238 lines
9.1 KiB
PHP
238 lines
9.1 KiB
PHP
<?php
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// +----------------------------------------------------------------------+
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// | PHP versions 4 and 5 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox, |
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// | Stig. S. Bakken, Lukas Smith, Frank M. Kromann |
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// | All rights reserved. |
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// +----------------------------------------------------------------------+
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// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB |
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// | API as well as database abstraction for PHP applications. |
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// | This LICENSE is in the BSD license style. |
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// | |
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// | Redistribution and use in source and binary forms, with or without |
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// | modification, are permitted provided that the following conditions |
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// | are met: |
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// | |
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// | Redistributions of source code must retain the above copyright |
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// | notice, this list of conditions and the following disclaimer. |
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// | |
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// | Redistributions in binary form must reproduce the above copyright |
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// | notice, this list of conditions and the following disclaimer in the |
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// | documentation and/or other materials provided with the distribution. |
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// | |
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// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
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// | Lukas Smith nor the names of his contributors may be used to endorse |
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// | or promote products derived from this software without specific prior|
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// | written permission. |
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// | |
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// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
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// | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
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// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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// | POSSIBILITY OF SUCH DAMAGE. |
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// +----------------------------------------------------------------------+
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// | Author: Lukas Smith <smith@pooteeweet.org> |
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// +----------------------------------------------------------------------+
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//
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// $Id$
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//
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require_once 'MDB2/Driver/Reverse/Common.php';
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/**
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* MDB2 InterbaseBase driver for the reverse engineering module
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*
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* @package MDB2
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* @category Database
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* @author Lukas Smith <smith@dybnet.de>
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*/
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class MDB2_Driver_Reverse_ibase extends MDB2_Driver_Reverse_Common
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{
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// }}}
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// {{{ tableInfo()
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/**
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* Returns information about a table or a result set
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*
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* NOTE: only supports 'table' and 'flags' if <var>$result</var>
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* is a table name.
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*
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* @param object|string $result MDB2_result object from a query or a
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* string containing the name of a table.
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* While this also accepts a query result
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* resource identifier, this behavior is
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* deprecated.
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* @param int $mode a valid tableInfo mode
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*
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* @return array an associative array with the information requested.
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* A MDB2_Error object on failure.
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*
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* @see MDB2_Driver_Common::tableInfo()
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*/
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function tableInfo($result, $mode = null)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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if (is_string($result)) {
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/*
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* Probably received a table name.
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* Create a result resource identifier.
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*/
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$id = $db->_doQuery("SELECT * FROM $result WHERE 1=0");
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if (PEAR::isError($id)) {
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return $id;
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}
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$got_string = true;
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} elseif (MDB2::isResultCommon($result)) {
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/*
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* Probably received a result object.
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* Extract the result resource identifier.
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*/
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$id = $result->getResource();
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$got_string = false;
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} else {
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/*
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* Probably received a result resource identifier.
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* Copy it.
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* Deprecated. Here for compatibility only.
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*/
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$id = $result;
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$got_string = false;
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}
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if (!is_resource($id)) {
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return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA);
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}
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$case_func = 'strtolower';
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} else {
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$case_func = 'strtoupper';
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}
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} else {
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$case_func = 'strval';
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}
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$count = @ibase_num_fields($id);
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$res = array();
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if ($mode) {
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$res['num_fields'] = $count;
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}
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for ($i = 0; $i < $count; $i++) {
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$info = @ibase_field_info($id, $i);
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$res[$i] = array(
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'table' => $got_string ? $case_func($result) : '',
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'name' => $case_func($info['name']),
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'type' => $info['type'],
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'len' => $info['length'],
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'flags' => ($got_string)
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? $this->_ibaseFieldFlags($info['name'], $result) : '',
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);
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if ($mode & MDB2_TABLEINFO_ORDER) {
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$res['order'][$res[$i]['name']] = $i;
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}
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if ($mode & MDB2_TABLEINFO_ORDERTABLE) {
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$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
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}
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}
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// free the result only if we were called on a table
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if ($got_string) {
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@ibase_free_result($id);
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}
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return $res;
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}
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// }}}
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// {{{ _ibaseFieldFlags()
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/**
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* Get the column's flags
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*
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* Supports "primary_key", "unique_key", "not_null", "default",
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* "computed" and "blob".
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*
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* @param string $field_name the name of the field
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* @param string $table_name the name of the table
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*
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* @return string the flags
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*
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* @access protected
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*/
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function _ibaseFieldFlags($field_name, $table_name)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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$query = 'SELECT R.RDB$CONSTRAINT_TYPE CTYPE'
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.' FROM RDB$INDEX_SEGMENTS I'
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.' JOIN RDB$RELATION_CONSTRAINTS R ON I.RDB$INDEX_NAME=R.RDB$INDEX_NAME'
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.' WHERE I.RDB$FIELD_NAME=\'' . $field_name . '\''
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.' AND UPPER(R.RDB$RELATION_NAME)=\'' . strtoupper($table_name) . '\'';
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$result = $db->_doQuery($query);
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if (PEAR::isError($result)) {
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return $result;
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}
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$flags = '';
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if ($obj = @ibase_fetch_object($result)) {
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@ibase_free_result($result);
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if (isset($obj->CTYPE) && trim($obj->CTYPE) == 'PRIMARY KEY') {
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$flags.= 'primary_key ';
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}
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if (isset($obj->CTYPE) && trim($obj->CTYPE) == 'UNIQUE') {
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$flags.= 'unique_key ';
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}
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}
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$query = 'SELECT R.RDB$NULL_FLAG AS NFLAG,'
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.' R.RDB$DEFAULT_SOURCE AS DSOURCE,'
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.' F.RDB$FIELD_TYPE AS FTYPE,'
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.' F.RDB$COMPUTED_SOURCE AS CSOURCE'
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.' FROM RDB$RELATION_FIELDS R '
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.' JOIN RDB$FIELDS F ON R.RDB$FIELD_SOURCE=F.RDB$FIELD_NAME'
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.' WHERE UPPER(R.RDB$RELATION_NAME)=\'' . strtoupper($table_name) . '\''
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.' AND R.RDB$FIELD_NAME=\'' . $field_name . '\'';
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$result = $db->_doQuery($query);
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if (PEAR::isError($result)) {
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return $result;
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}
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if ($obj = @ibase_fetch_object($result)) {
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@ibase_free_result($result);
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if (isset($obj->NFLAG)) {
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$flags.= 'not_null ';
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}
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if (isset($obj->DSOURCE)) {
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$flags.= 'default ';
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}
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if (isset($obj->CSOURCE)) {
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$flags.= 'computed ';
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}
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if (isset($obj->FTYPE) && $obj->FTYPE == 261) {
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$flags.= 'blob ';
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}
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}
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return trim($flags);
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}
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}
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?>
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