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