[ONOS-2447]RFC7047's API and its implementation and five main tables.
provide RFC7047's API and its implementation, and five main table which
contain Bridge, Controller, Interface, Open_vSwitch and Port 

Change-Id: I9e995a056fd55c986f5866c85ac712f1792cff4f
diff --git a/ovsdb/rfc/src/main/java/org/onosproject/ovsdb/rfc/jsonrpc/JsonReadContext.java b/ovsdb/rfc/src/main/java/org/onosproject/ovsdb/rfc/jsonrpc/JsonReadContext.java
new file mode 100644
index 0000000..8033f65
--- /dev/null
+++ b/ovsdb/rfc/src/main/java/org/onosproject/ovsdb/rfc/jsonrpc/JsonReadContext.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2015 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.ovsdb.rfc.jsonrpc;
+
+import java.util.Stack;
+
+/**
+ * Context for decode parameters.
+ */
+public class JsonReadContext {
+    private Stack<Byte> bufStack;
+    private boolean isStartMatch;
+    private int lastReadBytes;
+
+    /**
+     * Constructs a JsonReadContext object. This class only need initial
+     * parameter value for the readToJsonNode method of JsonRpcReaderUtil
+     * entity.
+     */
+    public JsonReadContext() {
+        bufStack = new Stack<Byte>();
+        isStartMatch = false;
+        lastReadBytes = 0;
+    }
+
+    /**
+     * Return bufStack.
+     * @return bufStack
+     */
+    public Stack<Byte> getBufStack() {
+        return bufStack;
+    }
+
+    /**
+     * Set bufStack, used for match the braces and double quotes.
+     * @param bufStack Stack of Byte
+     */
+    public void setBufStack(Stack<Byte> bufStack) {
+        this.bufStack = bufStack;
+    }
+
+    /**
+     * Return isStartMatch.
+     * @return isStartMatch
+     */
+    public boolean isStartMatch() {
+        return isStartMatch;
+    }
+
+    /**
+     * Set isStartMatch.
+     * @param isStartMatch mark whether the matching has started
+     */
+    public void setStartMatch(boolean isStartMatch) {
+        this.isStartMatch = isStartMatch;
+    }
+
+    /**
+     * Return lastReadBytes.
+     * @return lastReadBytes
+     */
+    public int getLastReadBytes() {
+        return lastReadBytes;
+    }
+
+    /**
+     * Set lastReadBytes.
+     * @param lastReadBytes the bytes for last decoding incomplete record
+     */
+    public void setLastReadBytes(int lastReadBytes) {
+        this.lastReadBytes = lastReadBytes;
+    }
+}