Examples with MultiMap org.datanucleus.util.MultiMap used on opensource projects

Example 1 with MultiMap

use of org.datanucleus.util.MultiMap in project datanucleus-core by datanucleus.

the class FetchGroupManager method addFetchGroup.

/**
 * Method to add a dynamic fetch group.
 * @param grp The fetch group
 */
public synchronized void addFetchGroup(FetchGroup grp) {
    if (fetchGroupByName == null) {
        fetchGroupByName = new MultiMap();
    }
    // Check for existing group with this name for this type
    Collection<FetchGroup> coll = (Collection<FetchGroup>) fetchGroupByName.get(grp.getName());
    if (coll != null) {
        // Check for existing entry for this name and class
        Iterator<FetchGroup> iter = coll.iterator();
        while (iter.hasNext()) {
            FetchGroup existingGrp = iter.next();
            if (existingGrp.getName().equals(grp.getName()) && existingGrp.getType().getName().equals(grp.getType().getName())) {
                // Already have a group for this name+class so replace it
                // Remove the old group from use
                existingGrp.disconnectFromListeners();
                // Remove the old group
                iter.remove();
            }
        }
    }
    fetchGroupByName.put(grp.getName(), grp);
}