ClassDescriptor descriptor = context.getEntityDescriptor(idVar);
PropertyVisitor visitor = new PropertyVisitor() {
public boolean visitAttribute(AttributeProperty property) {
ObjAttribute oa = property.getAttribute();
Iterator<?> dbPathIterator = oa.getDbPathIterator();
EJBQLJoinAppender joinAppender = null;
String marker = null;
EJBQLTableId lhsId = new EJBQLTableId(idVar);
while (dbPathIterator.hasNext()) {
Object pathPart = dbPathIterator.next();
if (pathPart == null) {
throw new CayenneRuntimeException(
"ObjAttribute has no component: " + oa.getName());
}
else if (pathPart instanceof DbRelationship) {
if (marker == null) {
marker = EJBQLJoinAppender.makeJoinTailMarker(idVar);
joinAppender = context
.getTranslatorFactory()
.getJoinAppender(context);
}
DbRelationship dr = (DbRelationship) pathPart;
EJBQLTableId rhsId = new EJBQLTableId(lhsId, dr.getName());
joinAppender.appendOuterJoin(marker, lhsId, rhsId);
lhsId = rhsId;
}
else if (pathPart instanceof DbAttribute) {
appendColumn(idVar, oa, (DbAttribute) pathPart, fields, oa
.getType());
}
}
return true;
}