[ONOS-3906],[ONOS-3910] Implementation of YANG module and leaf/leaf-list translator.
Change-Id: If1a8a991ffafa14b51211f97c435176ee1bf856f
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/utils/io/impl/SerializedDataStore.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/utils/io/impl/SerializedDataStore.java
new file mode 100644
index 0000000..d33e1fe
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/utils/io/impl/SerializedDataStore.java
@@ -0,0 +1,203 @@
+/*
+ * 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.utils.io.impl;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.ObjectInput;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutput;
+import java.io.ObjectOutputStream;
+import java.io.OutputStream;
+import java.util.List;
+
+/**
+ * Provides storage for serialized data while traversing data model tree for code generation.
+ */
+public final class SerializedDataStore {
+
+ /**
+ * Data Store types.
+ */
+ public static enum SerializedDataStoreType {
+
+ /**
+ * Methods.
+ */
+ INTERFACE_METHODS,
+
+ /**
+ * Methods.
+ */
+ BUILDER_METHODS,
+
+ /**
+ * Methods.
+ */
+ BUILDER_INTERFACE_METHODS,
+
+ /**
+ * Methods.
+ */
+ IMPL_METHODS,
+
+ /**
+ * Attributes.
+ */
+ ATTRIBUTE,
+
+ /**
+ * Imports.
+ */
+ IMPORT
+ }
+
+ /**
+ * File name string for serialized files of methods.
+ */
+ private static final String INTERFACE_METHOD_FILE_NAME = "SerializedInterfaceMethodDataStore";
+
+ /**
+ * File name string for serialized files of methods.
+ */
+ private static final String BUILDER_METHOD_FILE_NAME = "SerializedBuilderMethodDataStore";
+
+ /**
+ * File name string for serialized files of methods.
+ */
+ private static final String BUILDER_INTERFACE_METHOD_FILE_NAME = "SerializedBuilderInterfaceMethodDataStore";
+
+ /**
+ * File name string for serialized files of methods.
+ */
+ private static final String IMPL_METHOD_FILE_NAME = "SerializedImplMethodDataStore";
+
+ /**
+ * File name string for serialized files of attributes.
+ */
+ private static final String ATTRIBUTE_FILE_NAME = "SerializedAttributeDataStore";
+
+ /**
+ * File name string for serialized files of imports.
+ */
+ private static final String IMPORT_FILE_NAME = "SerializedImportDataStore";
+
+ /**
+ * File extension of serialized files.
+ */
+ private static final String SERIALIZE_FILE_EXTENSION = ".ser";
+
+ /**
+ * Buffer size.
+ */
+ private static final int BUFFER_SIZE = 8 * 1024;
+
+ /**
+ * Default constructor.
+ */
+ private SerializedDataStore() {
+ }
+
+ /**
+ * Writes specific info to a serialized file.
+ *
+ * @param data data to be stored
+ * @param type type of serialized data store
+ * @throws IOException when fails to create a serialized data file.
+ */
+ public static void setSerializeData(String data, SerializedDataStoreType type) throws IOException {
+
+ String fileName = "";
+ if (type.equals(SerializedDataStoreType.ATTRIBUTE)) {
+ fileName = ATTRIBUTE_FILE_NAME;
+ } else if (type.equals(SerializedDataStoreType.INTERFACE_METHODS)) {
+ fileName = INTERFACE_METHOD_FILE_NAME;
+ } else if (type.equals(SerializedDataStoreType.BUILDER_INTERFACE_METHODS)) {
+ fileName = BUILDER_INTERFACE_METHOD_FILE_NAME;
+ } else if (type.equals(SerializedDataStoreType.BUILDER_METHODS)) {
+ fileName = BUILDER_METHOD_FILE_NAME;
+ } else if (type.equals(SerializedDataStoreType.IMPL_METHODS)) {
+ fileName = IMPL_METHOD_FILE_NAME;
+ } else if (type.equals(SerializedDataStoreType.IMPORT)) {
+ fileName = IMPORT_FILE_NAME;
+ } else {
+ throw new IOException("Unresolved file type.");
+ }
+
+ try {
+ OutputStream file = new FileOutputStream(fileName + SERIALIZE_FILE_EXTENSION);
+ OutputStream buffer = new BufferedOutputStream(file, BUFFER_SIZE);
+
+ ObjectOutput output = new ObjectOutputStream(buffer);
+ try {
+ output.writeObject(data);
+ } finally {
+ output.close();
+ }
+ } catch (IOException ex) {
+ throw new IOException("failed to serialize data");
+ }
+ }
+
+ /**
+ * Get the serialized data.
+ *
+ * @param type type of serialized data store
+ * @return list of attribute info.
+ * @throws IOException when fails to read from the file.
+ * @throws ClassNotFoundException when file is missing.
+ */
+ @SuppressWarnings("unchecked")
+ public static List<String> getSerializeData(SerializedDataStoreType type)
+ throws IOException, ClassNotFoundException {
+
+ String fileName = "";
+ if (type.equals(SerializedDataStoreType.ATTRIBUTE)) {
+ fileName = ATTRIBUTE_FILE_NAME;
+ } else if (type.equals(SerializedDataStoreType.INTERFACE_METHODS)) {
+ fileName = INTERFACE_METHOD_FILE_NAME;
+ } else if (type.equals(SerializedDataStoreType.BUILDER_INTERFACE_METHODS)) {
+ fileName = BUILDER_INTERFACE_METHOD_FILE_NAME;
+ } else if (type.equals(SerializedDataStoreType.BUILDER_METHODS)) {
+ fileName = BUILDER_METHOD_FILE_NAME;
+ } else if (type.equals(SerializedDataStoreType.IMPL_METHODS)) {
+ fileName = IMPL_METHOD_FILE_NAME;
+ } else if (type.equals(SerializedDataStoreType.IMPORT)) {
+ fileName = IMPORT_FILE_NAME;
+ } else {
+ throw new IOException("Unresolved file type.");
+ }
+
+ try {
+ InputStream file = new FileInputStream(fileName + SERIALIZE_FILE_EXTENSION);
+ InputStream buffer = new BufferedInputStream(file);
+ ObjectInput input = new ObjectInputStream(buffer);
+ try {
+ List<String> recoveredData = (List<String>) input.readObject();
+ return recoveredData;
+ } finally {
+ input.close();
+ }
+ } catch (ClassNotFoundException ex) {
+ throw new ClassNotFoundException("failed to fetch the serialized data file.");
+ }
+ }
+}