[ONOS-2162][ONOS-2259]-- OVSDB- The implementation of OvsdbProviderService
and OvsdbClientService.

Change-Id: I3e04d7c111adf16201f8ad7ec732eb81de05b960
diff --git a/ovsdb/api/src/main/java/org/onosproject/ovsdb/controller/OvsdbTableStore.java b/ovsdb/api/src/main/java/org/onosproject/ovsdb/controller/OvsdbTableStore.java
new file mode 100644
index 0000000..1d9146e
--- /dev/null
+++ b/ovsdb/api/src/main/java/org/onosproject/ovsdb/controller/OvsdbTableStore.java
@@ -0,0 +1,67 @@
+/*
+ * 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.controller;
+
+import java.util.concurrent.ConcurrentMap;
+
+import com.google.common.collect.Maps;
+
+/**
+ * The class representing a database data.
+ */
+public class OvsdbTableStore {
+
+    private final ConcurrentMap<String, OvsdbRowStore> tableStore = Maps.newConcurrentMap();
+
+    /**
+     * Gets the ovsdbRowStore.
+     *
+     * @param tableName a ovsdb table name
+     * @return OvsdbRowStore the data of the table
+     */
+    public OvsdbRowStore getRows(String tableName) {
+        return tableStore.get(tableName);
+    }
+
+    /**
+     * Create or update a value to tableStore.
+     *
+     * @param tableName key of the tableName
+     * @param rowStore a row of the table
+     */
+    public void createOrUpdateTable(String tableName, OvsdbRowStore rowStore) {
+        tableStore.put(tableName, rowStore);
+    }
+
+    /**
+     * Drops a value to table data.
+     *
+     * @param tableName key of the tableName
+     */
+    public void dropTable(String tableName) {
+        tableStore.remove(tableName);
+    }
+
+    /**
+     * Gets the tableStore.
+     *
+     * @return tableStore
+     */
+    public ConcurrentMap<String, OvsdbRowStore> getTableStore() {
+        return tableStore;
+    }
+
+}