001    /**
002     * Copyright 2005-2014 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.rice.krad.util;
017    
018    import org.kuali.rice.krad.bo.BusinessObject;
019    import org.kuali.rice.krad.bo.ExternalizableBusinessObject;
020    
021    /**
022     * A class with utilities related to externalizable business objects
023     */
024    public final class ExternalizableBusinessObjectUtils {
025        private static final org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(ExternalizableBusinessObjectUtils.class);
026    
027            private ExternalizableBusinessObjectUtils() {
028                    throw new UnsupportedOperationException("do not call");
029            }
030        
031            /**
032             * Given a class, this method determines which of the interfaces that the class implements extends {@link ExternalizableBusinessObject}
033             * 
034             * @param businessObjectClass
035             * @return
036             */
037            public static Class determineExternalizableBusinessObjectSubInterface(Class businessObjectClass) {
038                    if (businessObjectClass == null) {
039                            return null;
040                    }
041                    //if (businessObjectClass.isInterface()) {
042                            if (!ExternalizableBusinessObject.class.equals(businessObjectClass) && ExternalizableBusinessObject.class.isAssignableFrom(businessObjectClass)) {
043                                    return businessObjectClass;
044                            }
045                if (ExternalizableBusinessObject.class.isAssignableFrom(businessObjectClass)) {
046                    Class tempClass = businessObjectClass;
047                    while (tempClass != null && !Object.class.equals(tempClass)) {
048                        for (Class tempClassInterface : tempClass.getInterfaces()) {
049                            if (!ExternalizableBusinessObject.class.equals(tempClassInterface) && ExternalizableBusinessObject.class.isAssignableFrom(tempClassInterface)) {
050                                return tempClassInterface;
051                            }
052                        }
053                        tempClass = tempClass.getSuperclass();
054                    }
055                }
056                return null;
057            }
058            
059            public static boolean isExternalizableBusinessObjectInterface(Class businessObjectClass) {
060                    return businessObjectClass != null && businessObjectClass.isInterface() && ExternalizableBusinessObject.class.isAssignableFrom(businessObjectClass);
061            }
062    
063        public static boolean isExternalizableBusinessObject(Class businessObjectClass) {
064            return businessObjectClass != null && ExternalizableBusinessObject.class.isAssignableFrom(businessObjectClass);
065        }
066    
067    
068            public static boolean isExternalizableBusinessObjectInterface(String businessObjectClassName) {
069                    try {
070                            Class businessObjectClass = Class.forName( businessObjectClassName );
071                            return isExternalizableBusinessObjectInterface(businessObjectClass);
072                    } catch ( Exception ex ) {
073                            LOG.debug( "Unable to get class object for class name: " + businessObjectClassName, ex );
074                            return false;
075                    }
076            }
077    }