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.mvnrepo;
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;
029import org.jdrupes.builder.mvnrepo.MvnRepoDependency.Scope;
030import static org.jdrupes.builder.mvnrepo.MvnRepoTypes.*;
031
032/// A factory for creating Java related resource objects.
033///
034public class MvnRepoResourceFactory implements ResourceFactory {
035
036    /// Instantiates a new java resource factory.
037    ///
038    @SuppressWarnings("PMD.UnnecessaryConstructor")
039    public MvnRepoResourceFactory() {
040        // Make javadoc happy
041    }
042
043    @SuppressWarnings("unchecked")
044    @Override
045    public <T extends Resource> Optional<T> newResource(ResourceType<T> type,
046            Project project, Object... args) {
047        if (MvnRepoDependencyType.isAssignableFrom(type)) {
048            return Optional
049                .of((T) Proxy.newProxyInstance(type.rawType().getClassLoader(),
050                    new Class<?>[] { type.rawType(), Proxyable.class },
051                    new ForwardingHandler(
052                        new DefaultMvnRepoDependency(
053                            (ResourceType<? extends MvnRepoDependency>) type,
054                            (String) args[0], (Scope) args[1]))));
055        }
056        if (MvnRepoResourceType.isAssignableFrom(type)) {
057            return Optional
058                .of((T) Proxy.newProxyInstance(type.rawType().getClassLoader(),
059                    new Class<?>[] { type.rawType(), Proxyable.class },
060                    new ForwardingHandler(
061                        new DefaultMvnRepoResource(
062                            (ResourceType<? extends MvnRepoResource>) type,
063                            (String) args[0]))));
064        }
065        return Optional.empty();
066    }
067
068}