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+/* 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);
+ }
+ }
+}
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