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doctrine2/lib/Doctrine/AuditLog.php

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<?php
/*
* $Id$
*
* 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 COPYRIGHT
* OWNER 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.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.phpdoctrine.com>.
*/
/**
* Doctrine_AuditLog
*
* @package Doctrine
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @category Object Relational Mapping
* @link www.phpdoctrine.com
* @since 1.0
* @version $Revision$
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
*/
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class Doctrine_AuditLog
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{
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protected $_options = array(
'className' => '%CLASS%Version',
'deleteTrigger' => '%TABLE%_ddt',
'updateTrigger' => '%TABLE%_dut',
'versionTable' => '%TABLE%_dvt',
'identifier' => '__version',
);
protected $_table;
public function __construct(Doctrine_Table $table)
{
$this->_table = $table;
}
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public function audit()
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{
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$conn = $this->_table->getConnection();
// begin new transaction
$conn->beginTransaction();
try {
// create the version table and the triggers
$this->createVersionTable();
$conn->execute($this->deleteTriggerSql());
$conn->execute($this->updateTriggerSql());
// commit structure changes
$conn->commit();
} catch(Doctrine_Connection_Exception $e) {
$conn->rollback();
}
}
public function createVersionTable()
{
$data = $this->_table->getExportableFormat(false);
$conn = $this->_table->getConnection();
$data['tableName'] = str_replace('%TABLE%', $data['tableName'], $this->_options['versionTable']);
foreach ($data['columns'] as $name => $def) {
unset($data['columns'][$name]['autoinc']);
unset($data['columns'][$name]['autoincrement']);
unset($data['columns'][$name]['sequence']);
unset($data['columns'][$name]['seq']);
}
$data['columns'] = array_merge(array($this->_options['identifier'] =>
array('type' => 'integer',
'primary' => true,
'autoinc' => true)), $data['columns']);
$definition = 'class ' . str_replace('%CLASS%', $this->_table->getComponentName(), $this->_options['className'])
. ' extends Doctrine_Record { '
. 'public function setTableDefinition() { '
. '$this->hasColumns(' . var_export($data['columns'], true) . ');'
. '$this->option(\'tableName\', \'' . $data['tableName'] . '\'); } }';
print $definition;
eval( $definition );
$data['options']['primary'] = array($this->_options['identifier']);
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$conn->export->createTable($data['tableName'], $data['columns'], $data['options']);
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}
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/**
* deleteTriggerSql
*
* returns the sql needed for the delete trigger creation
*/
public function deleteTriggerSql()
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{
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$conn = $this->_table->getConnection();
$columnNames = $this->_table->getColumnNames();
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$oldColumns = array_map(array($this, 'formatOld'), $columnNames);
$sql = 'CREATE TRIGGER '
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. $conn->quoteIdentifier($this->_table->getTableName()) . '_ddt' . ' DELETE ON '
. $conn->quoteIdentifier($this->_table->getTableName())
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. ' BEGIN'
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. ' INSERT INTO ' . $this->_table->getTableName() . '_dvt ('
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. implode(', ', array_map(array($conn, 'quoteIdentifier'), $columnNames))
. ') VALUES ('
. implode(', ', array_map(array($conn, 'quoteIdentifier'), $oldColumns))
. ');'
. ' END;';
return $sql;
}
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/**
* updateTriggerSql
*
* returns the sql needed for the update trigger creation
*/
public function updateTriggerSql()
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{
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$conn = $this->_table->getConnection();
$columnNames = $this->_table->getColumnNames();
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$oldColumns = array_map(array($this, 'formatOld'), $columnNames);
$sql = 'CREATE TRIGGER '
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. $conn->quoteIdentifier($this->_table->getTableName()) . '_dut' . ' UPDATE ON '
. $conn->quoteIdentifier($this->_table->getTableName())
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. ' BEGIN'
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. ' INSERT INTO ' . $this->_table->getTableName() . '_dvt ('
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. implode(', ', array_map(array($conn, 'quoteIdentifier'), $columnNames))
. ') VALUES ('
. implode(', ', array_map(array($conn, 'quoteIdentifier'), $oldColumns))
. ');'
. ' END;';
return $sql;
}
public function formatOld($column)
{
return 'old.' . $column;
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}
}