001/**
002 * Copyright 2005-2016 The Kuali Foundation
003 *
004 * Licensed under the Educational Community License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.opensource.org/licenses/ecl2.php
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.kuali.rice.devtools.jpa.eclipselink.conv.parser.helper.resolver;
017
018import java.util.ArrayList;
019import java.util.Collection;
020import java.util.HashMap;
021import java.util.Map;
022
023public final class BidirectionalOwnerRegistry {
024
025    private final Map<String, Collection<String>> manyToManyOwnerAssignment = new HashMap<String, Collection<String>>();
026    private final Map<String, Collection<String>> manyToOneOwnerAssignment = new HashMap<String, Collection<String>>();
027
028    private static class BidirectionalOwnerRegistryHolder {
029        static final BidirectionalOwnerRegistry INSTANCE = new BidirectionalOwnerRegistry();
030    }
031
032    private BidirectionalOwnerRegistry() {
033        //for singleton
034    }
035
036    public static BidirectionalOwnerRegistry getInstance() {
037        return BidirectionalOwnerRegistryHolder.INSTANCE;
038    }
039
040    public boolean isOwnerThisClassManyToMany(String thisClass, String itemClass) {
041        final Collection<String> ownedByThisClass = manyToManyOwnerAssignment.get(thisClass);
042        return ownedByThisClass != null && ownedByThisClass.contains(itemClass);
043    }
044
045    public boolean isOwnerItemClassManyToMany(String thisClass, String itemClass) {
046        final Collection<String> ownedByItemClass = manyToManyOwnerAssignment.get(itemClass);
047        return ownedByItemClass != null && ownedByItemClass.contains(thisClass);
048    }
049
050    public void assignThisClassAsOwnerManyToMany(String thisClass, String itemClass) {
051        Collection<String> ownedByThisClass = manyToManyOwnerAssignment.get(thisClass);
052        if (ownedByThisClass == null) {
053            ownedByThisClass = new ArrayList<String>();
054        }
055
056        ownedByThisClass.add(itemClass);
057        manyToManyOwnerAssignment.put(thisClass, ownedByThisClass);
058    }
059
060    public boolean isOwnerThisClassManyToOne(String thisClass, String itemClass) {
061        final Collection<String> ownedByThisClass = manyToOneOwnerAssignment.get(thisClass);
062        return ownedByThisClass != null && ownedByThisClass.contains(itemClass);
063    }
064
065    public boolean isOwnerItemClassManyToOne(String thisClass, String itemClass) {
066        final Collection<String> ownedByItemClass = manyToOneOwnerAssignment.get(itemClass);
067        return ownedByItemClass != null && ownedByItemClass.contains(thisClass);
068    }
069
070    public void assignItemClassAsOwnerManyToOne(String thisClass, String itemClass) {
071        Collection<String> ownedByItemClass = manyToOneOwnerAssignment.get(itemClass);
072        if (ownedByItemClass == null) {
073            ownedByItemClass = new ArrayList<String>();
074        }
075
076        ownedByItemClass.add(thisClass);
077        manyToOneOwnerAssignment.put(itemClass, ownedByItemClass);
078    }
079}