Revert "remove redundant code under appc-common-bundle/java"

[appc.git] / appc-core / appc-common-bundle / java / org / onap / appc / cache / impl / MetadataCacheFactory.java

diff --git a/appc-core/appc-common-bundle/java/org/onap/appc/cache/impl/MetadataCacheFactory.java b/appc-core/appc-common-bundle/java/org/onap/appc/cache/impl/MetadataCacheFactory.java
new file mode 100644 (file)
index 0000000..b6398e8
--- /dev/null
+++ b/appc-core/appc-common-bundle/java/org/onap/appc/cache/impl/MetadataCacheFactory.java
@@ -0,0 +1,65 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * =============================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * 
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.appc.cache.impl;
+
+import org.onap.appc.cache.CacheStrategies;
+import org.onap.appc.cache.MetadataCache;
+
+/**
+ * Metadata Cache Factory
+ */
+public class MetadataCacheFactory {
+
+    private static class ReferenceHolder {
+        private ReferenceHolder() {
+            throw new IllegalAccessError("ReferenceHolder");
+        }
+
+        private static final MetadataCacheFactory FACTORY = new MetadataCacheFactory();
+    }
+
+    private MetadataCacheFactory() {
+        // do nothing
+    }
+
+    public static MetadataCacheFactory getInstance(){
+        return ReferenceHolder.FACTORY;
+    }
+
+    public MetadataCache getMetadataCache(){
+        return new MetadataCacheImpl();
+    }
+
+    /**
+     * Get MetadataCache
+     * @param cacheStrategy the CacheStrategies to be used to build MetadataCacheImpl
+     * @return a new instance of MetadataCacheImpl
+     */
+    public MetadataCache getMetadataCache(CacheStrategies cacheStrategy) {
+        return new MetadataCacheImpl(cacheStrategy);
+    }
+
+
+
+}