public function __construct(B2DBStatement $statement)
{
try {
$this->crit = $statement->getCriteria();
if ($this->crit instanceof B2DBCriteria) {
if ($this->crit->action == 'insert') {
$this->insert_id = $statement->getInsertID();
} elseif ($this->crit->action == 'select') {
while ($row = $statement->fetch()) {
$this->rows[] = new B2DBRow($row, $statement);
}
$this->max_ptr = count($this->rows);
$this->int_ptr = 0;
} elseif ($this->crit->action = 'count') {
$value = $statement->fetch();
$this->num_col = $value['num_col'];
}
}
} catch (Exception $e) {
throw $e;
}
}
/**
* Perform upgrade for a table, by comparing one table to an old version
* of the same table
*
* @param B2DBTable $old_table
*/
public function upgrade(B2DBTable $old_table)
{
if ($old_table->getVersion() != $this->getVersion() - 1) {
throw new B2DBException('Cannot upgrade from ' . get_class($old_table) . ' version ' . $old_table->getVersion() . ', must be version ' . ($this->getVersion() - 1));
}
$old_columns = $old_table->getColumns();
$new_columns = $this->getColumns();
$added_columns = array_diff_key($new_columns, $old_columns);
$altered_columns = array_diff($old_columns, $new_columns);
$dropped_columns = array_keys(array_diff_key($old_columns, $new_columns));
$sqls = array();
foreach ($added_columns as $column => $details) {
$sqls[] = $this->_getAddColumnSQL($column, $details);
}
if (count($sqls)) {
foreach ($sqls as $sqlStmt) {
$statement = B2DBStatement::getPreparedStatement($sqlStmt);
$res = $statement->performQuery('alter');
}
}
$this->_migrateData($old_table);
$sqls = array();
foreach ($altered_columns as $column) {
$sqls[] = $this->_getAlterColumnSQL($column, $new_columns[$column]);
}
foreach ($dropped_columns as $column) {
$sqls[] = $this->_getDropColumnSQL($column);
}
if (count($sqls)) {
foreach ($sqls as $sqlStmt) {
$statement = B2DBStatement::getPreparedStatement($sqlStmt);
$res = $statement->performQuery('alter');
}
}
}
/**
* Return the associated B2DBCriteria
*
* @return B2DBCriteria
*/
public function getCriteria()
{
return $this->_statement->getCriteria();
}
