001    /*
002     * Copyright 2011 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     */
016    package org.kuali.kfs.module.cg.businessobject;
017    
018    /**
019     * Interface for BO instances that may be designated as "primary", e.g., within a collection.
020     */
021    public interface Primaryable {
022    
023        /**
024         * @return whether this BO instance is the primary one within a collection. This is normally exclusive of any other BOs in the
025         *         same collection.
026         */
027        public boolean isPrimary();
028    }