001    /**
002    The 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. 
004    You may obtain a copy of the License at http://www.mozilla.org/MPL/ 
005    Software distributed under the License is distributed on an "AS IS" basis, 
006    WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the 
007    specific language governing rights and limitations under the License. 
008    
009    The Original Code is "AbstractComposite.java".  Description: 
010    "A partial implementation of Composite" 
011    
012    The Initial Developer of the Original Code is University Health Network. Copyright (C) 
013    2012.  All Rights Reserved. 
014    
015    Contributor(s): ______________________________________. 
016    
017    Alternatively, the contents of this file may be used under the terms of the 
018    GNU General Public License (the  "GPL"), in which case the provisions of the GPL are 
019    applicable instead of those above.  If you wish to allow use of your version of this 
020    file only under the terms of the GPL and not to allow others to use your version 
021    of this file under the MPL, indicate your decision by deleting  the provisions above 
022    and replace  them with the notice and other provisions required by the GPL License.  
023    If you do not delete the provisions above, a recipient may use your version of 
024    this file under either the MPL or the GPL. 
025    */
026    package ca.uhn.hl7v2.model;
027    
028    import org.slf4j.Logger;
029    import org.slf4j.LoggerFactory;
030    
031    import ca.uhn.hl7v2.HL7Exception;
032    
033    /**
034     * @author i000161
035     *
036     */
037    public 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    }