2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.mdsal.binding.dom.adapter;
10 import com.google.common.base.Preconditions;
11 import com.google.common.collect.ClassToInstanceMap;
12 import com.google.common.collect.ImmutableClassToInstanceMap;
13 import com.google.common.collect.MutableClassToInstanceMap;
15 import org.opendaylight.yangtools.concepts.Builder;
17 public abstract class AdapterBuilder<T,D> implements Builder<T> {
19 private final ClassToInstanceMap<D> delegates = MutableClassToInstanceMap.create();
21 public abstract Set<? extends Class<? extends D>> getRequiredDelegates();
23 protected abstract T createInstance(ClassToInstanceMap<D> delegates);
25 private void checkAllRequiredServices() {
26 for (final Class<? extends D> type : getRequiredDelegates()) {
27 Preconditions.checkState(delegates.get(type) != null, "Requires service %s is not defined.",type);
31 public final <V extends D> void addDelegate(final Class<V> type,final D impl) {
32 delegates.put(type,impl);
36 public final T build() {
37 checkAllRequiredServices();
38 return createInstance(ImmutableClassToInstanceMap.copyOf(delegates));