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 "ReflectionUtil.java".  Description:
010     * "Utility class for reflection"
011     *
012     * The Initial Developer of the Original Code is University Health Network. Copyright (C)
013     * 2001.  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     */
027    package ca.uhn.hl7v2.util;
028    
029    import java.lang.reflect.Constructor;
030    import java.lang.reflect.InvocationTargetException;
031    
032    import ca.uhn.hl7v2.HL7Exception;
033    import ca.uhn.hl7v2.model.Message;
034    import ca.uhn.hl7v2.parser.ModelClassFactory;
035    
036    public class ReflectionUtil {
037    
038            /** Non instantiable */
039            private ReflectionUtil() {
040                    // nothing
041            }
042            
043            public static Message instantiateMessage(Class<? extends Message> theType, ModelClassFactory theModelClassFactory) throws HL7Exception {
044                    try {
045                            Constructor<? extends Message> constructor = theType.getConstructor(new Class<?>[] {ModelClassFactory.class});
046                            Message message = constructor.newInstance(theModelClassFactory);
047                            return message;
048                    } catch (SecurityException e) {
049                            throw new HL7Exception("Failed to instantiate message type " + theType.getCanonicalName() + ": ", e);
050                    } catch (NoSuchMethodException e) {
051                            throw new HL7Exception("Failed to instantiate message type " + theType.getCanonicalName() + ": ", e);
052                    } catch (IllegalArgumentException e) {
053                            throw new HL7Exception("Failed to instantiate message type " + theType.getCanonicalName() + ": ", e);
054                    } catch (InstantiationException e) {
055                            throw new HL7Exception("Failed to instantiate message type " + theType.getCanonicalName() + ": ", e);
056                    } catch (IllegalAccessException e) {
057                            throw new HL7Exception("Failed to instantiate message type " + theType.getCanonicalName() + ": ", e);
058                    } catch (InvocationTargetException e) {
059                            throw new HL7Exception("Failed to instantiate message type " + theType.getCanonicalName() + ": ", e);
060                    }
061            }
062            
063    }