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ported interbase sequence functionality, still needs refactoring

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zYne 2007-01-05 23:39:09 +00:00
parent ebfc0788e4
commit 3f9565e638
1 changed files with 68 additions and 1 deletions
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69
lib/Doctrine/Sequence/Firebird.php
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@ -32,5 +32,72 @@ Doctrine::autoload('Doctrine_Sequence');
*/
class Doctrine_Sequence_Firebird extends Doctrine_Sequence
{
/**
* Returns the next free id of a sequence
*
* @param string $seqName name of the sequence
* @param bool when true missing sequences are automatic created
*
* @return integer next id in the given sequence
*/
public function nextID($seqName, $ondemand = true)
{
$sequence_name = $this->getSequenceName($seq_name);
$query = 'SELECT GEN_ID('.$sequence_name.', 1) as the_value FROM RDB$DATABASE';
$this->expectError('*');
$result = $this->queryOne($query, 'integer');
$this->popExpect();
if (PEAR::isError($result)) {
if ($ondemand) {
$this->loadModule('Manager', null, true);
// Since we are creating the sequence on demand
// we know the first id = 1 so initialize the
// sequence at 2
$result = $this->manager->createSequence($seq_name, 2);
if (PEAR::isError($result)) {
return $this->raiseError($result, null, null,
'on demand sequence could not be created', __FUNCTION__);
} else {
// First ID of a newly created sequence is 1
// return 1;
// BUT generators are not always reset, so return the actual value
return $this->currID($seq_name);
}
}
}
return $result;
}
/**
* Returns the autoincrement ID if supported or $id or fetches the current
* ID in a sequence called: $table.(empty($field) ? '' : '_'.$field)
*
* @param string name of the table into which a new row was inserted
* @param string name of the field into which a new row was inserted
*/
public function lastInsertID($table = null, $field = null)
{
throw new Doctrine_Sequence_Exception('method not implemented');
}
/**
* Returns the current id of a sequence
*
* @param string $seqName name of the sequence
*
* @return integer current id in the given sequence
*/
public function currID($seqName)
{
$sequence_name = $this->getSequenceName($seq_name);
$query = 'SELECT GEN_ID('.$sequence_name.', 0) as the_value FROM RDB$DATABASE';
$value = $this->queryOne($query);
if (PEAR::isError($value)) {
return $this->raiseError($result, null, null,
'Unable to select from ' . $seq_name, __FUNCTION__);
}
if (!is_numeric($value)) {
return $this->raiseError(MDB2_ERROR, null, null,
'could not find value in sequence table', __FUNCTION__);
}
return $value;
}
}