AT&T 2.0.19 Code drop, stage 1

[aaf/authz.git] / misc / xgen / src / main / java / org / onap / aaf / misc / xgen / Cache.java

diff --git a/misc/xgen/src/main/java/org/onap/aaf/misc/xgen/Cache.java b/misc/xgen/src/main/java/org/onap/aaf/misc/xgen/Cache.java
new file mode 100644 (file)
index 0000000..2a9ee67
--- /dev/null
+++ b/misc/xgen/src/main/java/org/onap/aaf/misc/xgen/Cache.java
@@ -0,0 +1,37 @@
+/**
+ * ============LICENSE_START====================================================
+ * org.onap.aaf
+ * ===========================================================================
+ * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
+ * ===========================================================================
+ * 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.aaf.misc.xgen;
+
+
+public interface Cache<G extends XGen<G>> {
+       public void dynamic(G hgen, Code<G> code);
+       
+       public static class Null<N extends XGen<N>> implements Cache<N> {
+               @Override
+               public void dynamic(N hgen, Code<N> code) {} // NO_OP, no matter what type
+
+               @SuppressWarnings("rawtypes")
+               private static Null<?> singleton = new Null();
+               public static Null<?> singleton() { return singleton;}
+       }
+
+}
\ No newline at end of file