/**
* Gets all elements by type from database
* @param string $elementClass The element type searched
* @param string $conditions The conditions string to apply (ex : Region.x < 10 AND World.size = 500)
* @param string $orderBy The order string to apply (ex : 'Region.x, City.name DESC')
* @param string $join the joined tables
* @return array The element list
*/
public static function getElementList($elementClass, $conditions = NULL, $orderBy = NULL, $join = NULL)
{
$tableName = DatabaseFactory::getElementTableName($elementClass);
if ($join !== NULL) {
list($select, $from, $joinTableNameList, $joinTableAttachements) = DatabaseFactory::getJoin($tableName, $join);
$request = 'SELECT ' . $select . $from;
} else {
$request = 'SELECT * FROM ' . $tableName;
}
if ($conditions !== NULL) {
$request .= ' WHERE ' . $conditions;
}
if ($orderBy !== NULL) {
$request .= ' ORDER BY ' . $orderBy;
}
$databaseConnection = $elementClass::getDatabaseConnection();
// For join requests, needs to fetch results by index (to handle several fields with same name)
if ($join === NULL) {
// Execute request on database
$resultType = MysqlDatabaseConnectionModel::ARRAY_TYPE_ASSOC;
$resultList = $databaseConnection->selectRequest($request, $resultType, false, false);
} else {
// Gets field list with resut to get them for joined tables
$resultType = MysqlDatabaseConnectionModel::ARRAY_TYPE_NUM;
list($resultList, $fieldNameList) = $databaseConnection->selectRequest($request, $resultType, TRUE, FALSE);
// Builds main element field list
$fieldIndex = 0;
$fieldNumber = count($fieldNameList);
$elementFieldNameList = array();
while ($fieldIndex < $fieldNumber) {
$fieldName = $fieldNameList[$fieldIndex++];
if (StringTool::endsWith($fieldName, DatabaseFactory::JOIN_TABLE_FIELD_SEPARATOR)) {
break;
}
$elementFieldNameList[$tableName][] = $fieldName;
}
// Builds joined elements field list
foreach ($joinTableNameList as &$joinTableName) {
while ($fieldIndex < $fieldNumber) {
$fieldName = $fieldNameList[$fieldIndex++];
if (StringTool::endsWith($fieldName, DatabaseFactory::JOIN_TABLE_FIELD_SEPARATOR)) {
break;
}
$elementFieldNameList[$joinTableName][] = $fieldName;
}
}
}
// Constructs typed elements from results
$elementList = array();
$retrievedElementList = array();
while ($result = MysqlDatabaseConnectionModel::fetch_array($resultList, $resultType)) {
$rowElementList = array();
if ($join === NULL) {
// Sets element
$element = Element::getElementFromArray($elementClass, $result);
$element->setId();
$elementList[$element->id] = $element;
} else {
// Additionnal tables requested
$fieldIndex = 0;
$fieldValues = array_values($result);
$rowElementList = array();
// Sets elements attributes for each table on the row
foreach ($elementFieldNameList as $elementTableName => $fieldNameList) {
$elementAttributeList = array();
foreach ($fieldNameList as $fieldName) {
$elementAttributeList[$fieldName] = $fieldValues[$fieldIndex++];
}
// Go next to avoid separator field
++$fieldIndex;
// Sets element
$element = Element::getElementFromArray(DatabaseFactory::getElementClassName($elementTableName), $elementAttributeList);
$element->setId();
// Ignores empty LJ elements from "_has_" tables
if ($element->id == '-') {
continue;
}
// Adds it to element list if it is the main table
if ($tableName == $elementTableName && !ArrayTool::array_key_exists($element->id, $elementList)) {
$elementList[$element->id] = $element;
}
$rowElementList[$elementTableName] = $element;
}
// Attaches elements with each other
foreach ($rowElementList as $rowElementTable => $rowElement) {
CacheFactory::addElement($rowElement);
// Checks if element has to be attached to another one
if (isset($joinTableAttachements[$rowElementTable])) {
foreach ($joinTableAttachements[$rowElementTable] as &$joinTableAttachement) {
if (isset($rowElementList[$joinTableAttachement])) {
if ($rowElementList[$joinTableAttachement]->getElementClass() != $rowElement->getElementClass() || $rowElementList[$joinTableAttachement]->id != $rowElement->id) {
$retrievedElementList[$joinTableAttachement][$rowElementList[$joinTableAttachement]->id][$rowElementTable][$rowElement->id] = $rowElement;
}
}
}
}
}
}
}
MysqlDatabaseConnectionModel::free_result($resultList);
return array($elementList, $retrievedElementList);
}