001    /*
002      GRANITE DATA SERVICES
003      Copyright (C) 2011 GRANITE DATA SERVICES S.A.S.
004    
005      This file is part of Granite Data Services.
006    
007      Granite Data Services is free software; you can redistribute it and/or modify
008      it under the terms of the GNU Library General Public License as published by
009      the Free Software Foundation; either version 2 of the License, or (at your
010      option) any later version.
011    
012      Granite Data Services is distributed in the hope that it will be useful, but
013      WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014      FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015      for more details.
016    
017      You should have received a copy of the GNU Library General Public License
018      along with this library; if not, see <http://www.gnu.org/licenses/>.
019    */
020    
021    package org.granite.config;
022    
023    import java.util.List;
024    
025    import org.granite.messaging.amf.io.util.JavaClassDescriptor;
026    import org.granite.messaging.amf.io.util.Property;
027    import org.granite.util.ClassUtil;
028    
029    /**
030     * @author Franck WOLFF
031     */
032    public class JavaClassDescriptorFactory implements ConfigurableFactory<Class<? extends JavaClassDescriptor>> {
033    
034        private static final class NullJavaClassDescriptor extends JavaClassDescriptor {
035            protected NullJavaClassDescriptor(Class<?> type) {
036                super(type);
037                throw new RuntimeException("Not implemented");
038            }
039            @Override
040            protected List<Property> introspectProperties() {
041                return null;
042            }
043        }
044        private static final Class<? extends JavaClassDescriptor> NULL_JC_DESCRIPTOR
045            = NullJavaClassDescriptor.class;
046    
047        public Class<? extends JavaClassDescriptor> getNullInstance() {
048            return NULL_JC_DESCRIPTOR;
049        }
050    
051        public Class<? extends JavaClassDescriptor> getInstance(String type, GraniteConfig config) throws GraniteConfigException {
052            try {
053                return ClassUtil.forName(type, JavaClassDescriptor.class);
054            } catch (Exception e) {
055                throw new GraniteConfigException("Could not load JavaClassDescriptor type: " + type, e);
056            }
057        }
058    
059        public Class<? extends JavaClassDescriptor> getInstanceForBean(
060            List<Class<? extends JavaClassDescriptor>> scannedConfigurables,
061            Class<?> beanClass,
062            GraniteConfig config) throws GraniteConfigException {
063    
064            return NULL_JC_DESCRIPTOR;
065        }
066    }