X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-clustering-commons%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fcluster%2Fdatastore%2Fnode%2Futils%2FQNameFactory.java;h=5c7f6d1a5650333ca1cee7124ff0edd47a8c0378;hb=8e3fb7b97f23fe0aba388b295fbe45d67d21e91c;hp=002b9ff82e53eea0b62fd98d97756926a2e21bea;hpb=03e09529c237cf7871a9062bfbeec403bf9289ff;p=controller.git

diff --git a/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/datastore/node/utils/QNameFactory.java b/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/datastore/node/utils/QNameFactory.java
index 002b9ff82e..5c7f6d1a56 100644
--- a/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/datastore/node/utils/QNameFactory.java
+++ b/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/datastore/node/utils/QNameFactory.java
@@ -1,34 +1,34 @@
 /*
+ * Copyright (c) 2014, 2015 Cisco Systems, Inc. and others.  All rights reserved.
  *
- *  Copyright (c) 2014 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
- *
+ * 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.controller.cluster.datastore.node.utils;
 
+import com.google.common.cache.CacheBuilder;
+import com.google.common.cache.CacheLoader;
+import com.google.common.cache.LoadingCache;
 import org.opendaylight.yangtools.yang.common.QName;
 
-import java.util.HashMap;
-import java.util.Map;
+public final class QNameFactory {
 
-public class QNameFactory {
-    private static final Map<String, QName> cache = new HashMap<>();
+    private static final int MAX_QNAME_CACHE_SIZE = 10000;
 
-    public static QName create(String name){
-        QName value = cache.get(name);
-        if(value == null){
-            synchronized (cache){
-                value = cache.get(name);
-                if(value == null) {
-                    value = QName.create(name);
-                    cache.put(name, value);
+    private QNameFactory() {
+    }
+
+    private static final LoadingCache<String, QName> CACHE = CacheBuilder.newBuilder().maximumSize(MAX_QNAME_CACHE_SIZE)
+            .softValues().build(new CacheLoader<String, QName>() {
+                @Override
+                public QName load(String key) {
+                    return QName.create(key);
                 }
-            }
-        }
-        return value;
+            });
+
+    public static QName create(String name) {
+        return CACHE.getUnchecked(name);
     }
 }