001    /**
002     * Copyright 2005-2012 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.ExternalizableBusinessObject;
019    
020    /**
021     * A class with utilities related to externalizable business objects
022     */
023    public final class ExternalizableBusinessObjectUtils {
024        private static final org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(ExternalizableBusinessObjectUtils.class);
025    
026            private ExternalizableBusinessObjectUtils() {
027                    throw new UnsupportedOperationException("do not call");
028            }
029        
030            /**
031             * Given a class, this method determines which of the interfaces that the class implements extends {@link ExternalizableBusinessObject}
032             * 
033             * @param businessObjectClass
034             * @return
035             */
036            public static Class determineExternalizableBusinessObjectSubInterface(Class businessObjectClass) {
037                    if (businessObjectClass == null) {
038                            return null;
039                    }
040                    //if (businessObjectClass.isInterface()) {
041                            if (!ExternalizableBusinessObject.class.equals(businessObjectClass) && ExternalizableBusinessObject.class.isAssignableFrom(businessObjectClass)) {
042                                    return businessObjectClass;
043                            }
044                if (ExternalizableBusinessObject.class.isAssignableFrom(businessObjectClass)) {
045                    Class tempClass = businessObjectClass;
046                    while (tempClass != null && !Object.class.equals(tempClass)) {
047                        for (Class tempClassInterface : tempClass.getInterfaces()) {
048                            if (!ExternalizableBusinessObject.class.equals(tempClassInterface) && ExternalizableBusinessObject.class.isAssignableFrom(tempClassInterface)) {
049                                return tempClassInterface;
050                            }
051                        }
052                        tempClass = tempClass.getSuperclass();
053                    }
054                }
055                return null;
056            }
057            
058            public static boolean isExternalizableBusinessObjectInterface(Class businessObjectClass) {
059                    return businessObjectClass != null && businessObjectClass.isInterface() && ExternalizableBusinessObject.class.isAssignableFrom(businessObjectClass);
060            }
061    
062            public static boolean isExternalizableBusinessObjectInterface(String businessObjectClassName) {
063                    try {
064                            Class businessObjectClass = Class.forName( businessObjectClassName );
065                            return isExternalizableBusinessObjectInterface(businessObjectClass);
066                    } catch ( Exception ex ) {
067                            LOG.debug( "Unable to get class object for class name: " + businessObjectClassName, ex );
068                            return false;
069                    }
070            }
071    }