/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2015, 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.wildfly.extension.clustering.singleton;

import java.util.EnumSet;

import org.jboss.as.clustering.controller.ContextualSubsystemRegistration;
import org.jboss.as.clustering.controller.descriptions.SubsystemResourceDescriptionResolver;
import org.jboss.as.controller.Extension;
import org.jboss.as.controller.ExtensionContext;
import org.jboss.as.controller.SubsystemRegistration;
import org.jboss.as.controller.parsing.ExtensionParsingContext;
import org.kohsuke.MetaInfServices;

/**
 * Extension point for singleton subsystem.
 * @author Paul Ferraro
 */
@MetaInfServices(Extension.class)
public class SingletonExtension implements Extension {

    public static final String SUBSYSTEM_NAME = "singleton";

    static final SubsystemResourceDescriptionResolver SUBSYSTEM_RESOLVER = new SubsystemResourceDescriptionResolver(SUBSYSTEM_NAME, SingletonExtension.class);

    @Override
    public void initialize(ExtensionContext context) {
        SubsystemRegistration registration = context.registerSubsystem(SUBSYSTEM_NAME, SingletonModel.CURRENT.getVersion());

        new SingletonResourceDefinition().register(new ContextualSubsystemRegistration(registration, context));
        registration.registerXMLElementWriter(new SingletonXMLWriter());
    }

    @Override
    public void initializeParsers(ExtensionParsingContext context) {
        for (SingletonSchema schema : EnumSet.allOf(SingletonSchema.class)) {
            context.setSubsystemXmlMapping(SUBSYSTEM_NAME, schema.getNamespaceUri(), new SingletonXMLReader(schema));
        }
    }
}

@@ -1074,35 +1074,8 @@
 n;%0A%0A
-import java.util.EnumSet;%0A%0A
 impo
@@ -1116,36 +1116,23 @@
 ler.
-ContextualSubsystemRegistrat
+SubsystemExtens
 ion;
@@ -1271,175 +1271,8 @@
 on;%0A
-import org.jboss.as.controller.ExtensionContext;%0Aimport org.jboss.as.controller.SubsystemRegistration;%0Aimport org.jboss.as.controller.parsing.ExtensionParsingContext;%0A
 impo
@@ -1450,42 +1450,58 @@
 ion 
-implements Extension %7B%0A%0A    public
+extends SubsystemExtension%3CSingletonSchema%3E %7B%0A%0A   
  sta
@@ -1547,17 +1547,16 @@
 leton%22;%0A
-%0A
     stat
@@ -1715,679 +1715,202 @@
     
-@Override%0A    public void initialize(ExtensionContext context) %7B%0A        SubsystemRegistration registration = context.registerSubsystem(SUBSYSTEM_NAME, SingletonModel.CURRENT.getVersion());%0A%0A        new SingletonResourceDefinition().register(new ContextualSubsystemRegistration(registration, context));%0A        registration.registerXMLElementWriter(new SingletonXMLWriter());%0A    %7D%0A%0A    @Override%0A    public void initializeParsers(ExtensionParsingContext context) %7B%0A        for (SingletonSchema schema : EnumSet.allOf(SingletonSchema.class)) %7B%0A            context.setSubsystemXmlMapping(SUBSYSTEM_NAME, schema.getNamespaceUri(), new SingletonXMLReader(schema));%0A        %7D
+public SingletonExtension() %7B%0A        super(SUBSYSTEM_NAME, SingletonModel.CURRENT, SingletonResourceDefinition::new, SingletonSchema.CURRENT, SingletonXMLReader::new, new SingletonXMLWriter());
 %0A   

Use generic extension implementation (singleton subsystem).