[ONOS-3906],[ONOS-3910] Implementation of YANG module and leaf/leaf-list translator.
Change-Id: If1a8a991ffafa14b51211f97c435176ee1bf856f
diff --git a/src/main/java/org/onosproject/yangutils/translator/CachedFileHandle.java b/src/main/java/org/onosproject/yangutils/translator/CachedFileHandle.java
new file mode 100644
index 0000000..cd5fa81
--- /dev/null
+++ b/src/main/java/org/onosproject/yangutils/translator/CachedFileHandle.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2016 Open Networking Laboratory
+ *
+ * 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.
+ */
+
+package org.onosproject.yangutils.translator;
+
+import java.io.IOException;
+
+import org.onosproject.yangutils.datamodel.YangType;
+
+/**
+ * Cached java file handle, which supports the addition of member attributes and
+ * methods.
+ */
+public interface CachedFileHandle {
+
+ /**
+ * Add a new attribute to the file(s).
+ *
+ * @param attrType data type of the added attribute.
+ * @param name name of the attribute.
+ * @param isListAttr if the current added attribute needs to be maintained
+ * in a list.
+ */
+ void addAttributeInfo(YangType<?> attrType, String name, boolean isListAttr);
+
+ /**
+ * Flushes the cached contents to the target file, frees used resources.
+ *
+ * @throws IOException when failes to generated java files.
+ */
+ void close() throws IOException;
+}