| /* gnu.java.beans.decoder.MethodContext |
| Copyright (C) 2004 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| package gnu.java.beans.decoder; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.util.ArrayList; |
| |
| /** MethodContext collects arguments for a method call and creates the result object |
| * using it. The method is called using the result object of the parent Context. |
| * |
| * <p>When the result object is available methods can be called on it using sub-Contexts.</p> |
| * |
| * @author Robert Schuster |
| */ |
| class MethodContext extends AbstractCreatableObjectContext |
| { |
| private ArrayList arguments = new ArrayList(); |
| private String methodName; |
| |
| MethodContext(String id, String newMethodName) |
| { |
| setId(id); |
| setStatement(true); |
| methodName = newMethodName; |
| } |
| |
| /* (non-Javadoc) |
| * @see gnu.java.beans.decoder.Context#addObject(java.lang.Object) |
| */ |
| public void addParameterObjectImpl(Object o) |
| { |
| arguments.add(o); |
| } |
| |
| /* (non-Javadoc) |
| * @see gnu.java.beans.decoder.Context#endContext(gnu.java.beans.decoder.Context) |
| */ |
| protected Object createObject(Context outerContext) |
| throws AssemblyException |
| { |
| Object outerObject = outerContext.getResult(); |
| |
| if (outerObject == null) |
| throw new AssemblyException( |
| new NullPointerException( |
| "No object to invoke method " + methodName)); |
| |
| Object[] args = arguments.toArray(); |
| |
| try |
| { |
| Method method = |
| MethodFinder.getMethod( |
| outerObject.getClass(), |
| methodName, |
| args); |
| return method.invoke(outerObject, args); |
| } |
| catch (NoSuchMethodException nsme) |
| { |
| throw new AssemblyException(nsme); |
| } |
| catch (InvocationTargetException ite) |
| { |
| throw new AssemblyException(ite.getCause()); |
| } |
| catch (IllegalAccessException iae) |
| { |
| throw new AssemblyException(iae); |
| } |
| } |
| } |