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Common.php
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Common.php
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<?php
// +----------------------------------------------------------------------+
// | PHP versions 4 and 5 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1998-2004 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> |
// +----------------------------------------------------------------------+
//
// $Id$
//
/**
* @package MDB2
* @category Database
*/
/**
* These are constants for the tableInfo-function
* they are bitwised or'ed. so if there are more constants to be defined
* in the future, adjust MDB2_TABLEINFO_FULL accordingly
*/
define('MDB2_TABLEINFO_ORDER', 1);
define('MDB2_TABLEINFO_ORDERTABLE', 2);
define('MDB2_TABLEINFO_FULL', 3);
/**
* Base class for the schema reverse engineering module that is extended by each MDB2 driver
*
* @package MDB2
* @category Database
* @author Lukas Smith <smith@pooteeweet.org>
*/
class MDB2_Driver_Reverse_Common extends MDB2_Module_Common
{
// }}}
// {{{ getTableFieldDefinition()
/**
* get the stucture of a field into an array
*
* @param string $table name of table that should be used in method
* @param string $fields name of field that should be used in method
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function getTableFieldDefinition($table, $field)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'getTableFieldDefinition: table field definition is not supported');
}
// }}}
// {{{ getTableIndexDefinition()
/**
* get the stucture of an index into an array
*
* @param string $table name of table that should be used in method
* @param string $index name of index that should be used in method
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function getTableIndexDefinition($table, $index)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'getTableIndexDefinition: getting index definition is not supported');
}
// }}}
// {{{ getSequenceDefinition()
/**
* get the stucture of a sequence into an array
*
* @param string $sequence name of sequence that should be used in method
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function getSequenceDefinition($sequence)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
$start = $db->currId($sequence);
if (PEAR::isError($start)) {
return $start;
}
if ($db->supports('current_id')) {
$start++;
} else {
$db->warnings[] = 'database does not support getting current
sequence value, the sequence value was incremented';
}
$definition = array();
if ($start != 1) {
$definition = array('start' => $start);
}
return $definition;
}
// }}}
// {{{ tableInfo()
/**
* Returns information about a table or a result set
*
* The format of the resulting array depends on which <var>$mode</var>
* you select. The sample output below is based on this query:
* <pre>
* SELECT tblFoo.fldID, tblFoo.fldPhone, tblBar.fldId
* FROM tblFoo
* JOIN tblBar ON tblFoo.fldId = tblBar.fldId
* </pre>
*
* <ul>
* <li>
*
* <kbd>null</kbd> (default)
* <pre>
* [0] => Array (
* [table] => tblFoo
* [name] => fldId
* [type] => int
* [len] => 11
* [flags] => primary_key not_null
* )
* [1] => Array (
* [table] => tblFoo
* [name] => fldPhone
* [type] => string
* [len] => 20
* [flags] =>
* )
* [2] => Array (
* [table] => tblBar
* [name] => fldId
* [type] => int
* [len] => 11
* [flags] => primary_key not_null
* )
* </pre>
*
* </li><li>
*
* <kbd>MDB2_TABLEINFO_ORDER</kbd>
*
* <p>In addition to the information found in the default output,
* a notation of the number of columns is provided by the
* <samp>num_fields</samp> element while the <samp>order</samp>
* element provides an array with the column names as the keys and
* their location index number (corresponding to the keys in the
* the default output) as the values.</p>
*
* <p>If a result set has identical field names, the last one is
* used.</p>
*
* <pre>
* [num_fields] => 3
* [order] => Array (
* [fldId] => 2
* [fldTrans] => 1
* )
* </pre>
*
* </li><li>
*
* <kbd>MDB2_TABLEINFO_ORDERTABLE</kbd>
*
* <p>Similar to <kbd>MDB2_TABLEINFO_ORDER</kbd> but adds more
* dimensions to the array in which the table names are keys and
* the field names are sub-keys. This is helpful for queries that
* join tables which have identical field names.</p>
*
* <pre>
* [num_fields] => 3
* [ordertable] => Array (
* [tblFoo] => Array (
* [fldId] => 0
* [fldPhone] => 1
* )
* [tblBar] => Array (
* [fldId] => 2
* )
* )
* </pre>
*
* </li>
* </ul>
*
* The <samp>flags</samp> element contains a space separated list
* of extra information about the field. This data is inconsistent
* between DBMS's due to the way each DBMS works.
* + <samp>primary_key</samp>
* + <samp>unique_key</samp>
* + <samp>multiple_key</samp>
* + <samp>not_null</samp>
*
* Most DBMS's only provide the <samp>table</samp> and <samp>flags</samp>
* elements if <var>$result</var> is a table name. The following DBMS's
* provide full information from queries:
* + fbsql
* + mysql
*
* If the 'portability' option has <samp>MDB2_PORTABILITY_FIX_CASE</samp>
* turned on, the names of tables and fields will be lower or upper cased.
*
* @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 $mode either unused or one of the tableInfo modes:
* <kbd>MDB2_TABLEINFO_ORDERTABLE</kbd>,
* <kbd>MDB2_TABLEINFO_ORDER</kbd> or
* <kbd>MDB2_TABLEINFO_FULL</kbd> (which does both).
* These are bitwise, so the first two can be
* combined using <kbd>|</kbd>.
*
* @return array an associative array with the information requested.
* A MDB2_Error object on failure.
*
* @see MDB2_Driver_Common::setOption()
*/
function tableInfo($result, $mode = null)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
'tableInfo: method not implemented');
}
}
?>

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