001/*
002 * JDrupes Builder
003 * Copyright (C) 2025 Michael N. Lipp
004 * 
005 * This program is free software: you can redistribute it and/or modify
006 * it under the terms of the GNU Affero General Public License as
007 * published by the Free Software Foundation, either version 3 of the
008 * License, or (at your option) any later version.
009 *
010 * This program is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
013 * GNU Affero General Public License for more details.
014 *
015 * You should have received a copy of the GNU Affero General Public License
016 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
017 */
018
019package org.jdrupes.builder.eclipse;
020
021import java.lang.reflect.Proxy;
022import java.util.Optional;
023import org.jdrupes.builder.api.Project;
024import org.jdrupes.builder.api.Proxyable;
025import org.jdrupes.builder.api.Resource;
026import org.jdrupes.builder.api.ResourceFactory;
027import org.jdrupes.builder.api.ResourceType;
028import org.jdrupes.builder.core.ForwardingHandler;
029
030/// A factory for creating Java related resource objects.
031///
032public class EclipseResourceFactory implements ResourceFactory {
033
034    /// Instantiates a new java resource factory.
035    ///
036    @SuppressWarnings("PMD.UnnecessaryConstructor")
037    public EclipseResourceFactory() {
038        // Make javadoc happy
039    }
040
041    @SuppressWarnings("unchecked")
042    @Override
043    public <T extends Resource> Optional<T> newResource(ResourceType<T> type,
044            Project project, Object... args) {
045        if (new ResourceType<EclipseConfiguration>() {}
046            .isAssignableFrom(type)) {
047            return Optional
048                .of((T) Proxy.newProxyInstance(type.rawType().getClassLoader(),
049                    new Class<?>[] { type.rawType(), Proxyable.class },
050                    new ForwardingHandler(
051                        new DefaultEclipseConfiguration(
052                            (ResourceType<? extends EclipseConfiguration>) type,
053                            (String) args[0], (String) args[1]))));
054        }
055        return Optional.empty();
056    }
057
058}