/**
* Loads object ids (UOID) to array
* @param bool $force Whether to force loading or not
* @return bool
*/
protected function _load($force = false)
{
// if loaded and no forcing
if (!$force && $this->loaded) {
// done
return true;
}
// only need to initialize if array is not set
if (is_array($this->array)) {
$this->loaded = true;
return true;
}
// initialize array with an empty array
$this->array = array();
// get manager through object
if (!($em = $this->o->epGetManager())) {
$this->loaded = true;
return true;
}
// get all relationship ids
if ($array = $em->getRelationIds($this->o, $this->fm, $this->o->epGetClassMap())) {
$this->array = $array;
}
return $this->loaded = true;
}
/**
* Make where part of a SQL select to get children values
* @param epDbObject $db the db connection
* @param epObject $o the child object for query
* @param int $depth how many children down we are
* @param string $parent the parent of this child
* @return array('from', 'where')
* @author Oak Nauhygon <*****@*****.**>
* @author Trevan Richins <*****@*****.**>
*/
public static function sqlSelectChildren($db, $o, $depth, $parent)
{
// array to keep new tables in 'from'
$from = array();
// array to keep new expression in 'where'
$where = array();
// get the class map for the child object
$cm = $o->epGetClassMap();
// get all vars in the object
$vars = $o->epGetVars();
// if object has oid, select use oid
if ($oid = $o->epGetObjectId()) {
$where[] = $db->quoteId($cm->getOidColumn()) . ' = ' . $oid;
return array('from' => $from, 'where' => $where);
}
// mark child object under search (to avoid loops)
$o->epSetSearching(true);
// total number of vars (primitive or non-primitive) collected
$n = 0;
// new depth
$depth++;
// number of non-primitive (relationship) fields collected
$nprim_id = 0;
// loop through vars
while (list($var, $val) = each($vars)) {
// get field map
if (!($fm =& $cm->getField($var))) {
// should not happen
continue;
}
// exclude null values (including empty strings)
if (is_null($val) || !$val && $fm->getType() == epFieldMap::DT_CHAR) {
continue;
}
// is it a primitive var?
if ($fm->isPrimitive()) {
$where[] = $db->quoteId($parent) . '.' . $db->quoteId($fm->getColumnName()) . ' = ' . $db->quote($val, $fm);
// done for this var
$n++;
continue;
}
// okay we are dealing with a non-primitive (relationship) var
if ($val instanceof epArray) {
foreach ($val as $obj) {
// skip object that is under searching
if (!$obj || $obj->epIsSearching()) {
continue;
}
// get 'where' and 'from' from relationship
$from_where = epObj2Sql::sqlSelectRelations($db, $fm, $cm, $obj->epGetClassMap()->getTable(), $depth . $nprim_id, $parent);
$where = array_merge($where, $from_where['where']);
$from = array_merge($from, $from_where['from']);
// get 'where' and 'from' from relationship
$from_where = epObj2Sql::sqlSelectChildren($db, $obj, $depth, '_' . $depth . $nprim_id);
$where = array_merge($where, $from_where['where']);
$from = array_merge($from, $from_where['from']);
$nprim_id++;
}
} else {
if ($val instanceof epObject && !$val->epIsSearching()) {
// get 'where' and 'from' from relationship
$from_where = epObj2Sql::sqlSelectRelations($db, $fm, $cm, $val->epGetClassMap()->getTable(), $depth . $nprim_id, $parent);
$where = array_merge($where, $from_where['where']);
$from = array_merge($from, $from_where['from']);
// get 'where' and 'from' from relationship
$from_where = epObj2Sql::sqlSelectChildren($db, $val, $depth, '_' . $depth . $nprim_id);
$where = array_merge($where, $from_where['where']);
$from = array_merge($from, $from_where['from']);
$nprim_id++;
}
}
$n++;
}
// reset search flag on child object
$o->epSetSearching(false);
return array('from' => $from, 'where' => $where);
}