/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2012, Red Hat, Inc., and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.jboss.as.txn.subsystem;

import java.util.Collections;
import java.util.Set;

import javax.management.ObjectName;

import org.jboss.as.controller.PathAddress;
import org.jboss.as.controller.PathElement;
import org.jboss.as.controller.registry.AbstractModelResource;
import org.jboss.as.controller.registry.Resource;
import org.jboss.as.txn.logging.TransactionLogger;
import org.jboss.dmr.ModelNode;

/**
 * Resource maintaining the sub-tree for the log-store.
 *
 * @author Emanuel Muckenhuber
 */
class LogStoreResource implements Resource {

    private volatile Resource delegate = Resource.Factory.create();

    protected void update(final Resource updated) {
        delegate = updated;
    }

    @Override
    public ModelNode getModel() {
        return delegate.getModel();
    }

    @Override
    public void writeModel(ModelNode newModel) {
        delegate.writeModel(newModel);
    }

    @Override
    public boolean isModelDefined() {
        return delegate.isModelDefined();
    }

    @Override
    public boolean hasChild(PathElement element) {
        return delegate.hasChild(element);
    }

    @Override
    public Resource getChild(PathElement element) {
        return delegate.getChild(element);
    }

    @Override
    public Resource requireChild(PathElement element) {
        return delegate.requireChild(element);
    }

    @Override
    public boolean hasChildren(String childType) {
        return delegate.hasChildren(childType);
    }

    @Override
    public Resource navigate(PathAddress address) {
        return delegate.navigate(address);
    }

    @Override
    public Set<String> getChildTypes() {
        return delegate.getChildTypes();
    }

    @Override
    public Set<String> getChildrenNames(String childType) {
        return delegate.getChildrenNames(childType);
    }

    @Override
    public Set<ResourceEntry> getChildren(String childType) {
        return delegate.getChildren(childType);
    }

    @Override
    public void registerChild(PathElement address, Resource resource) {
        assert resource instanceof LogStoreRuntimeResource;
        delegate.registerChild(address, resource);
    }

    @Override
    public Resource removeChild(PathElement address) {
        return delegate.removeChild(address);
    }

    @Override
    public boolean isRuntime() {
        return false;
    }

    @Override
    public boolean isProxy() {
        return false;
    }

    @Override
    public void registerChild(PathElement address, int index, Resource resource) {
        throw TransactionLogger.ROOT_LOGGER.indexedChildResourceRegistrationNotAvailable(address);
    }

    @Override
    public Set<String> getOrderedChildTypes() {
        return Collections.emptySet();
    }

    @Override
    public Resource clone() {
        return this;
    }

    static ObjectName getObjectName(final Resource resource) {
        assert resource instanceof LogStoreRuntimeResource;
        return ((LogStoreRuntimeResource)resource).getObjectName();
    }

    static class LogStoreRuntimeResource extends AbstractModelResource {

        private final ObjectName objectName;
 //       private volatile ModelNode model;
        private volatile ModelNode model = new ModelNode();

        LogStoreRuntimeResource(ObjectName objectName) {
            this.objectName = objectName;
        }

        ObjectName getObjectName() {
            return objectName;
        }

        @Override
        public ModelNode getModel() {
            return model;
        }

        @Override
        public void writeModel(final ModelNode newModel) {
            model = newModel;
        }

        @Override
        public boolean isModelDefined() {
            return model.isDefined();
        }

        @Override
        public Resource clone() {
            return this;
        }

        @Override
        public boolean isRuntime() {
            return true;
        }
    }
}