+/*
+ * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.yangtools.binding.data.codec.impl;
+
+import com.google.common.base.Preconditions;
+import com.google.common.cache.CacheBuilder;
+import com.google.common.cache.CacheLoader;
+import com.google.common.cache.LoadingCache;
+import java.util.Set;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+
+/**
+ *
+ * Abstract Holder of Binding to Normalized Node caches indexed by {@link DataContainerCodecContext}
+ * to which cache is associated.
+ *
+ */
+abstract class AbstractBindingNormalizedNodeCacheHolder {
+
+ private final Set<Class<? extends DataObject>> cachedValues;
+ private final LoadingCache<DataContainerCodecContext<?, ?>, BindingNormalizedNodeCache> caches = CacheBuilder
+ .newBuilder().build(new CacheLoader<DataContainerCodecContext<?, ?>, BindingNormalizedNodeCache>() {
+
+ @Override
+ public BindingNormalizedNodeCache load(final DataContainerCodecContext<?, ?> key) throws Exception {
+ return new BindingNormalizedNodeCache(AbstractBindingNormalizedNodeCacheHolder.this, key);
+ }
+
+ });
+
+ protected AbstractBindingNormalizedNodeCacheHolder(final Set<Class<? extends DataObject>> cacheSpec) {
+ cachedValues = Preconditions.checkNotNull(cacheSpec);
+ }
+
+ BindingNormalizedNodeCache getCachingSerializer(final DataContainerCodecContext<?, ?> childCtx) {
+ if (isCached(childCtx.getBindingClass())) {
+ return caches.getUnchecked(childCtx);
+ }
+ return null;
+ }
+
+ boolean isCached(final Class<?> type) {
+ return cachedValues.contains(type);
+ }
+}