/**
* Construct a data object.
* @param mixed $src record source. It can be
* - false: an empty object is created
* - an integer: loads the record that has record id equal to $src
* - an object: creates an object with field data taken from the members
* of $src
* - an array: creates an object with the field data taken from the
* elements of $src
* @param mixed $field_map mapping for field names from $src. If it is a
* string, then it will be treated as a prefix for field names. If it is
* an array, then it is a mapping of destination field names to source
* field names.
* @param array $associations pre-fetched associated objects (to avoid
* needing to re-fetch)
* @param boolean $from_db whether or not the record source object/array
* comes from the database
* @param array $extradatafields extra data from the $src object/array
* associated with the record that should be kept in the data object (such
* as counts of related records)
* @param moodle_database $database database object to use (null for the
* default database)
*/
public function __construct($src = false, $field_map = null, array $associations = array(), $from_db = false, array $extradatafields = array(), moodle_database $database = null)
{
global $DB;
if (!isset(self::$_unset)) {
self::$_unset = new stdClass();
}
// mark all the fields as unset
$reflect = new ReflectionClass(get_class($this));
$prefix_len = strlen(self::FIELD_PREFIX);
foreach ($reflect->getProperties() as $prop) {
if (strncmp($prop->getName(), self::FIELD_PREFIX, $prefix_len) === 0) {
$field_name = $prop->getName();
$this->{$field_name} = self::$_unset;
}
}
if ($database === null) {
$this->_db = $DB;
} else {
$this->_db = $database;
}
// initialize the object fields
if ($src === false) {
$this->_setup_extradata((object) array(), $extradatafields);
} else {
if (is_numeric($src)) {
$this->_dbfield_id = $src;
$this->_setup_extradata((object) array(), $extradatafields);
} else {
if (is_object($src)) {
$this->_load_data_from_record($src, false, $field_map, $from_db, $extradatafields);
} else {
if (is_array($src)) {
$this->_load_data_from_record((object) $src, false, $field_map, $from_db, $extradatafields);
} else {
throw new data_object_exception('data_object_construct_invalid_source', 'local_eliscore');
}
}
}
}
$this->_associated_objects = $associations;
}
