001/**
002The contents of this file are subject to the Mozilla Public License Version 1.1 
003(the "License"); you may not use this file except in compliance with the License. 
004You may obtain a copy of the License at http://www.mozilla.org/MPL/ 
005Software distributed under the License is distributed on an "AS IS" basis, 
006WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the 
007specific language governing rights and limitations under the License. 
008
009The Original Code is "AbstractComposite.java".  Description: 
010"A partial implementation of Composite" 
011
012The Initial Developer of the Original Code is University Health Network. Copyright (C) 
0132012.  All Rights Reserved. 
014
015Contributor(s): ______________________________________. 
016
017Alternatively, the contents of this file may be used under the terms of the 
018GNU General Public License (the  "GPL"), in which case the provisions of the GPL are 
019applicable instead of those above.  If you wish to allow use of your version of this 
020file only under the terms of the GPL and not to allow others to use your version 
021of this file under the MPL, indicate your decision by deleting  the provisions above 
022and replace  them with the notice and other provisions required by the GPL License.  
023If you do not delete the provisions above, a recipient may use your version of 
024this file under either the MPL or the GPL. 
025*/
026package ca.uhn.hl7v2.model;
027
028import org.slf4j.Logger;
029import org.slf4j.LoggerFactory;
030
031import ca.uhn.hl7v2.HL7Exception;
032
033/**
034 * @author i000161
035 *
036 */
037public abstract class AbstractComposite extends AbstractType implements
038                Composite {
039
040        private static final long serialVersionUID = -2657103285266475699L;
041        
042        protected Logger log;
043        
044        public AbstractComposite(Message message) {
045                super(message);
046                log = LoggerFactory.getLogger(getClass());
047        }
048
049        @Override
050        public void clear() {
051                super.clear();
052                for (Type component : getComponents()) {
053                        component.clear();
054                }
055        }
056        
057        protected <T extends Type> T getTyped(int idx, Class<T> type) {
058                try {
059                        @SuppressWarnings("unchecked") T ret = (T)getComponent(idx);
060                        return ret;
061                } catch (HL7Exception e) {
062                 log.error("Unexpected problem accessing known data type component - this is a bug.", e);
063                 throw new RuntimeException(e);
064                }
065        }
066
067}