456 lines
15 KiB
PHP
456 lines
15 KiB
PHP
|
<?php
|
||
|
// vim: set et ts=4 sw=4 fdm=marker:
|
||
|
// +----------------------------------------------------------------------+
|
||
|
// | PHP versions 4 and 5 |
|
||
|
// +----------------------------------------------------------------------+
|
||
|
// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox, |
|
||
|
// | Stig. S. Bakken, Lukas Smith, Lorenzo Alberton |
|
||
|
// | 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> |
|
||
|
// | Lorenzo Alberton <l.alberton@quipo.it> |
|
||
|
// +----------------------------------------------------------------------+
|
||
|
//
|
||
|
// $Id$
|
||
|
|
||
|
require_once 'MDB2/Driver/Datatype/Common.php';
|
||
|
|
||
|
/**
|
||
|
* MDB2 Firebird/Interbase driver
|
||
|
*
|
||
|
* @package MDB2
|
||
|
* @category Database
|
||
|
* @author Lukas Smith <smith@pooteeweet.org>
|
||
|
* @author Lorenzo Alberton <l.alberton@quipo.it>
|
||
|
*/
|
||
|
class MDB2_Driver_Datatype_ibase extends MDB2_Driver_Datatype_Common
|
||
|
{
|
||
|
// {{{ _baseConvertResult()
|
||
|
|
||
|
/**
|
||
|
* General type conversion method
|
||
|
*
|
||
|
* @param mixed $value refernce to a value to be converted
|
||
|
* @param string $type specifies which type to convert to
|
||
|
* @param boolean $rtrim [optional] when TRUE [default], apply rtrim() to text
|
||
|
* @return object a MDB2 error on failure
|
||
|
* @access protected
|
||
|
*/
|
||
|
function _baseConvertResult($value, $type, $rtrim = true)
|
||
|
{
|
||
|
if (null === $value) {
|
||
|
return null;
|
||
|
}
|
||
|
$db = $this->getDBInstance();
|
||
|
if (MDB2::isError($db)) {
|
||
|
return $db;
|
||
|
}
|
||
|
if (MDB2::isError($connection)) {
|
||
|
return $connection;
|
||
|
}
|
||
|
|
||
|
switch ($type) {
|
||
|
case 'text':
|
||
|
$blob_info = @ibase_blob_info($connection, $value);
|
||
|
if (is_array($blob_info) && $blob_info['length'] > 0) {
|
||
|
//LOB => fetch into variable
|
||
|
$clob = $this->_baseConvertResult($value, 'clob', $rtrim);
|
||
|
if (!MDB2::isError($clob) && is_resource($clob)) {
|
||
|
$clob_value = '';
|
||
|
while (!feof($clob)) {
|
||
|
$clob_value .= fread($clob, 8192);
|
||
|
}
|
||
|
$this->destroyLOB($clob);
|
||
|
}
|
||
|
$value = $clob_value;
|
||
|
}
|
||
|
if ($rtrim) {
|
||
|
$value = rtrim($value);
|
||
|
}
|
||
|
return $value;
|
||
|
case 'timestamp':
|
||
|
return substr($value, 0, strlen('YYYY-MM-DD HH:MM:SS'));
|
||
|
}
|
||
|
return parent::_baseConvertResult($value, $type, $rtrim);
|
||
|
}
|
||
|
|
||
|
// }}}
|
||
|
// {{{ _getCharsetFieldDeclaration()
|
||
|
|
||
|
/**
|
||
|
* Obtain DBMS specific SQL code portion needed to set the CHARACTER SET
|
||
|
* of a field declaration to be used in statements like CREATE TABLE.
|
||
|
*
|
||
|
* @param string $charset name of the charset
|
||
|
* @return string DBMS specific SQL code portion needed to set the CHARACTER SET
|
||
|
* of a field declaration.
|
||
|
*/
|
||
|
function _getCharsetFieldDeclaration($charset)
|
||
|
{
|
||
|
return 'CHARACTER SET '.$charset;
|
||
|
}
|
||
|
|
||
|
// }}}
|
||
|
// {{{ _getCollationFieldDeclaration()
|
||
|
|
||
|
/**
|
||
|
* Obtain DBMS specific SQL code portion needed to set the COLLATION
|
||
|
* of a field declaration to be used in statements like CREATE TABLE.
|
||
|
*
|
||
|
* @param string $collation name of the collation
|
||
|
* @return string DBMS specific SQL code portion needed to set the COLLATION
|
||
|
* of a field declaration.
|
||
|
*/
|
||
|
function _getCollationFieldDeclaration($collation)
|
||
|
{
|
||
|
return 'COLLATE '.$collation;
|
||
|
}
|
||
|
|
||
|
// }}}
|
||
|
// {{{ getTypeDeclaration()
|
||
|
|
||
|
/**
|
||
|
* Obtain DBMS specific SQL code portion needed to declare an text type
|
||
|
* field to be used in statements like CREATE TABLE.
|
||
|
*
|
||
|
* @param array $field associative array with the name of the properties
|
||
|
* of the field being declared as array indexes. Currently, the types
|
||
|
* of supported field properties are as follows:
|
||
|
*
|
||
|
* length
|
||
|
* Integer value that determines the maximum length of the text
|
||
|
* field. If this argument is missing the field should be
|
||
|
* declared to have the longest length allowed by the DBMS.
|
||
|
*
|
||
|
* default
|
||
|
* Text value to be used as default for this field.
|
||
|
*
|
||
|
* notnull
|
||
|
* Boolean flag that indicates whether this field is constrained
|
||
|
* to not be set to null.
|
||
|
* @return string DBMS specific SQL code portion that should be used to
|
||
|
* declare the specified field.
|
||
|
* @access public
|
||
|
*/
|
||
|
function getTypeDeclaration($field)
|
||
|
{
|
||
|
$db = $this->getDBInstance();
|
||
|
if (MDB2::isError($db)) {
|
||
|
return $db;
|
||
|
}
|
||
|
|
||
|
switch ($field['type']) {
|
||
|
case 'text':
|
||
|
$length = !empty($field['length'])
|
||
|
? $field['length'] : $db->options['default_text_field_length'];
|
||
|
$fixed = !empty($field['fixed']) ? $field['fixed'] : false;
|
||
|
return $fixed ? 'CHAR('.$length.')' : 'VARCHAR('.$length.')';
|
||
|
case 'clob':
|
||
|
return 'BLOB SUB_TYPE 1';
|
||
|
case 'blob':
|
||
|
return 'BLOB SUB_TYPE 0';
|
||
|
case 'integer':
|
||
|
return 'INT';
|
||
|
case 'boolean':
|
||
|
return 'SMALLINT';
|
||
|
case 'date':
|
||
|
return 'DATE';
|
||
|
case 'time':
|
||
|
return 'TIME';
|
||
|
case 'timestamp':
|
||
|
return 'TIMESTAMP';
|
||
|
case 'float':
|
||
|
return 'DOUBLE PRECISION';
|
||
|
case 'decimal':
|
||
|
$length = !empty($field['length']) ? $field['length'] : 18;
|
||
|
$scale = !empty($field['scale']) ? $field['scale'] : $db->options['decimal_places'];
|
||
|
return 'DECIMAL('.$length.','.$scale.')';
|
||
|
}
|
||
|
return '';
|
||
|
}
|
||
|
|
||
|
// }}}
|
||
|
// {{{ _quoteLOB()
|
||
|
|
||
|
/**
|
||
|
* Convert a text value into a DBMS specific format that is suitable to
|
||
|
* compose query statements.
|
||
|
*
|
||
|
* @param string $value text string value that is intended to be converted.
|
||
|
* @param bool $quote determines if the value should be quoted and escaped
|
||
|
* @param bool $escape_wildcards if to escape escape wildcards
|
||
|
* @return string text string that represents the given argument value in
|
||
|
* a DBMS specific format.
|
||
|
* @access protected
|
||
|
*/
|
||
|
function _quoteLOB($value, $quote, $escape_wildcards)
|
||
|
{
|
||
|
$db = $this->getDBInstance();
|
||
|
if (MDB2::isError($db)) {
|
||
|
return $db;
|
||
|
}
|
||
|
|
||
|
$connection = $db->getConnection();
|
||
|
if (MDB2::isError($connection)) {
|
||
|
return $connection;
|
||
|
}
|
||
|
|
||
|
$close = true;
|
||
|
if (is_resource($value)) {
|
||
|
$close = false;
|
||
|
} elseif (preg_match('/^(\w+:\/\/)(.*)$/', $value, $match)) {
|
||
|
if ($match[1] == 'file://') {
|
||
|
$value = $match[2];
|
||
|
}
|
||
|
$value = @fopen($value, 'r');
|
||
|
} else {
|
||
|
$fp = @tmpfile();
|
||
|
@fwrite($fp, $value);
|
||
|
@rewind($fp);
|
||
|
$value = $fp;
|
||
|
}
|
||
|
$blob_id = @ibase_blob_import($connection, $value);
|
||
|
|
||
|
if ($close) {
|
||
|
@fclose($value);
|
||
|
}
|
||
|
return $blob_id;
|
||
|
}
|
||
|
|
||
|
// }}}
|
||
|
// {{{ _retrieveLOB()
|
||
|
|
||
|
/**
|
||
|
* retrieve LOB from the database
|
||
|
*
|
||
|
* @param array $lob array
|
||
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
||
|
* @access protected
|
||
|
*/
|
||
|
function _retrieveLOB(&$lob)
|
||
|
{
|
||
|
if (empty($lob['handle'])) {
|
||
|
$db = $this->getDBInstance();
|
||
|
if (MDB2::isError($db)) {
|
||
|
return $db;
|
||
|
}
|
||
|
$connection = $db->getConnection();
|
||
|
if (MDB2::isError($connection)) {
|
||
|
return $connection;
|
||
|
}
|
||
|
$lob['handle'] = @ibase_blob_open($connection, $lob['resource']);
|
||
|
if (!$lob['handle']) {
|
||
|
$db = $this->getDBInstance();
|
||
|
if (MDB2::isError($db)) {
|
||
|
return $db;
|
||
|
}
|
||
|
|
||
|
return $db->raiseError(null, null, null,
|
||
|
'Could not open fetched large object field', __FUNCTION__);
|
||
|
}
|
||
|
}
|
||
|
$lob['loaded'] = true;
|
||
|
return MDB2_OK;
|
||
|
}
|
||
|
|
||
|
// }}}
|
||
|
// {{{ _readLOB()
|
||
|
|
||
|
/**
|
||
|
* Read data from large object input stream.
|
||
|
*
|
||
|
* @param array $lob array
|
||
|
* @param blob $data reference to a variable that will hold data to be
|
||
|
* read from the large object input stream
|
||
|
* @param int $length integer value that indicates the largest ammount of
|
||
|
* data to be read from the large object input stream.
|
||
|
* @return mixed length on success, a MDB2 error on failure
|
||
|
* @access protected
|
||
|
*/
|
||
|
function _readLOB(&$lob, $length)
|
||
|
{
|
||
|
$data = @ibase_blob_get($lob['handle'], $length);
|
||
|
if (!is_string($data)) {
|
||
|
$db = $this->getDBInstance();
|
||
|
if (MDB2::isError($db)) {
|
||
|
return $db;
|
||
|
}
|
||
|
|
||
|
return $db->raiseError(null, null, null,
|
||
|
'Unable to read LOB', __FUNCTION__);
|
||
|
}
|
||
|
return $data;
|
||
|
}
|
||
|
|
||
|
// }}}
|
||
|
// {{{ _destroyLOB()
|
||
|
|
||
|
/**
|
||
|
* Free any resources allocated during the lifetime of the large object
|
||
|
* handler object.
|
||
|
*
|
||
|
* @param array $lob array
|
||
|
* @access protected
|
||
|
*/
|
||
|
function _destroyLOB(&$lob)
|
||
|
{
|
||
|
if (isset($lob['handle'])) {
|
||
|
@ibase_blob_close($lob['handle']);
|
||
|
unset($lob['handle']);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// }}}
|
||
|
// {{{ patternEscapeString()
|
||
|
|
||
|
/**
|
||
|
* build string to define escape pattern string
|
||
|
*
|
||
|
* @access public
|
||
|
*
|
||
|
* @return string define escape pattern
|
||
|
*/
|
||
|
function patternEscapeString()
|
||
|
{
|
||
|
$db = $this->getDBInstance();
|
||
|
if (MDB2::isError($db)) {
|
||
|
return $db;
|
||
|
}
|
||
|
return " ESCAPE '". $db->string_quoting['escape_pattern'] ."'";
|
||
|
}
|
||
|
|
||
|
// }}}
|
||
|
// {{{ _mapNativeDatatype()
|
||
|
|
||
|
/**
|
||
|
* Maps a native array description of a field to a MDB2 datatype and length
|
||
|
*
|
||
|
* @param array $field native field description
|
||
|
* @return array containing the various possible types, length, sign, fixed
|
||
|
* @access public
|
||
|
*/
|
||
|
function _mapNativeDatatype($field)
|
||
|
{
|
||
|
$length = $field['length'];
|
||
|
if ((int)$length <= 0) {
|
||
|
$length = null;
|
||
|
}
|
||
|
$type = array();
|
||
|
$unsigned = $fixed = null;
|
||
|
$db_type = strtolower($field['type']);
|
||
|
$field['field_sub_type'] = !empty($field['field_sub_type'])
|
||
|
? strtolower($field['field_sub_type']) : null;
|
||
|
switch ($db_type) {
|
||
|
case 'smallint':
|
||
|
case 'integer':
|
||
|
case 'int64':
|
||
|
//these may be 'numeric' or 'decimal'
|
||
|
if (isset($field['field_sub_type'])) {
|
||
|
$field['type'] = $field['field_sub_type'];
|
||
|
return $this->mapNativeDatatype($field);
|
||
|
}
|
||
|
case 'bigint':
|
||
|
case 'quad':
|
||
|
$type[] = 'integer';
|
||
|
if ($length == '1') {
|
||
|
$type[] = 'boolean';
|
||
|
if (preg_match('/^(is|has)/', $field['name'])) {
|
||
|
$type = array_reverse($type);
|
||
|
}
|
||
|
}
|
||
|
break;
|
||
|
case 'varchar':
|
||
|
$fixed = false;
|
||
|
case 'char':
|
||
|
case 'cstring':
|
||
|
$type[] = 'text';
|
||
|
if ($length == '1') {
|
||
|
$type[] = 'boolean';
|
||
|
if (preg_match('/^(is|has)/', $field['name'])) {
|
||
|
$type = array_reverse($type);
|
||
|
}
|
||
|
}
|
||
|
if ($fixed !== false) {
|
||
|
$fixed = true;
|
||
|
}
|
||
|
break;
|
||
|
case 'date':
|
||
|
$type[] = 'date';
|
||
|
$length = null;
|
||
|
break;
|
||
|
case 'timestamp':
|
||
|
$type[] = 'timestamp';
|
||
|
$length = null;
|
||
|
break;
|
||
|
case 'time':
|
||
|
$type[] = 'time';
|
||
|
$length = null;
|
||
|
break;
|
||
|
case 'float':
|
||
|
case 'double':
|
||
|
case 'double precision':
|
||
|
case 'd_float':
|
||
|
$type[] = 'float';
|
||
|
break;
|
||
|
case 'decimal':
|
||
|
case 'numeric':
|
||
|
$type[] = 'decimal';
|
||
|
$length = $field['precision'].','.$field['scale'];
|
||
|
break;
|
||
|
case 'blob':
|
||
|
$type[] = ($field['field_sub_type'] == 'text') ? 'clob' : 'blob';
|
||
|
$length = null;
|
||
|
break;
|
||
|
default:
|
||
|
$db = $this->getDBInstance();
|
||
|
if (MDB2::isError($db)) {
|
||
|
return $db;
|
||
|
}
|
||
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
||
|
'unknown database attribute type: '.$db_type, __FUNCTION__);
|
||
|
}
|
||
|
|
||
|
if ((int)$length <= 0) {
|
||
|
$length = null;
|
||
|
}
|
||
|
|
||
|
return array($type, $length, $unsigned, $fixed);
|
||
|
}
|
||
|
|
||
|
// }}}
|
||
|
}
|
||
|
?>
|