protected function _loadAndReturnRow($position)
{
if (!isset($this->_data[$position])) {
throw new Exception("Data for provided position does not exist");
}
// do we already have a row object for this position?
if (empty($this->_rows[$position])) {
$this->_rows[$position] = new $this->_rowClass(array('table' => $this->_table, 'data' => $this->_data[$position], 'stored' => $this->_stored, 'readOnly' => $this->_readOnly));
if ($this->_table instanceof \libDb\Table\AbstractTable) {
$info = $this->_table->info();
if ($this->_rows[$position] instanceof \libDb\Table\Row\RowAbstract) {
if ($info['cols'] == array_keys($this->_data[$position])) {
$this->_rows[$position]->setTable($this->getTable());
}
}
} else {
$this->_rows[$position]->setTable(null);
}
}
// return the row object
return $this->_rows[$position];
}
/**
* Set the table object, to re-establish a live connection
* to the database for a Row that has been de-serialized.
*
* @param \libDb\Table\AbstractTable $table
* @return boolean
* @throws \libDb\Table\Row\Exception
*/
public function setTable(libDb\Adapter\AbstractAdapter $table = null)
{
if ($table == null) {
$this->_table = null;
$this->_connected = false;
return false;
}
$tableClass = get_class($table);
if (!$table instanceof $this->_tableClass) {
throw new \libDb\Table\Row\Exception("The specified Table is of class {$tableClass}, expecting class to be instance of {$this->_tableClass}");
}
$this->_table = $table;
$this->_tableClass = $tableClass;
$info = $this->_table->info();
if ($info['cols'] != array_keys($this->_data)) {
throw new \libDb\Table\Row\Exception('The specified Table does not have the same columns as the Row');
}
if (!array_intersect((array) $this->_primary, $info['primary']) == (array) $this->_primary) {
throw new \libDb\Table\Row\Exception("The specified Table '{$tableClass}' does not have the same primary key as the Row");
}
$this->_connected = true;
return true;
}
/**
* Adds a FROM table and optional columns to the query.
*
* The table name can be expressed
*
* @param array|string|\libDb\Expr|AbstractTable $name The table name or an
associative array relating
table name to correlation
name.
* @param array|string|\libDb\Expr $cols The columns to select from this table.
* @param string $schema The schema name to specify, if any.
* @return Select This object.
*/
public function from($name, $cols = self::SQL_WILDCARD, $schema = null)
{
if ($name instanceof AbstractTable) {
$info = $name->info();
$name = $info[AbstractTable::NAME];
if (isset($info[AbstractTable::SCHEMA])) {
$schema = $info[AbstractTable::SCHEMA];
}
}
return $this->joinInner($name, null, $cols, $schema);
}
