private function _compile_select()
{
$values = array();
$sql = 'SELECT ' . (isset($this->select_distinct) ? 'DISTINCT ' : '');
$sql .= Columns::create($this->_parameter('select'))->sql();
if (isset($this->from)) {
$sql .= "\nFROM " . implode(', ', $this->_parameter('from'));
}
if (isset($this->join)) {
foreach ($this->_parameter('join') as $join) {
$type = $join['direction'] !== null ? strtoupper($join['direction']) . ' ' : '';
$sql .= "\n{$type}JOIN " . Columns::create($join['table'])->sql();
$on = Conditions::create()->add($join['on'])->compile();
$sql .= "\n\tON " . $on['sql'];
$values = array_merge($values, $on['values']);
}
}
if (isset($this->where)) {
$where = Conditions::create()->add($this->_parameter('where'))->compile();
$sql .= "\nWHERE " . $where['sql'];
$values = array_merge($values, $where['values']);
}
if (isset($this->group_by)) {
$sql .= "\nGROUP BY " . Columns::create($this->_parameter('group_by'))->sql();
}
if (isset($this->order_by)) {
$sql .= "\nORDER BY ";
$order_by = array();
foreach ($this->_parameter('order_by') as $column) {
$s = Columns::create($column['column'])->sql();
if (isset($column['collate'])) {
$s .= " COLLATE {$column['collate']}";
}
if (isset($column['order'])) {
$s .= ' ' . strtoupper($column['order']);
}
$order_by[] = $s;
}
$sql .= implode(', ', $order_by);
}
if (isset($this->limit)) {
$sql .= "\nLIMIT " . $this->_parameter_first('limit');
}
return array('sql' => $sql, 'values' => $values);
}
public function testCreate()
{
$c = \Snowfire\Database\Query\Columns::create('column');
$this->assertEquals('`column`', $c->sql());
}