Renamed datagrid and datastore packages

net.onrc.onos.datagrid.* => net.onrc.onos.core.datagrid.*
net.onrc.onos.datastore.* => net.onrc.onos.core.datastore.*

Change-Id: Ibe1894a6fabae08ea7cfcbf6595f0c91b05ef497
diff --git a/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCTableID.java b/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCTableID.java
new file mode 100644
index 0000000..f69addc
--- /dev/null
+++ b/src/main/java/net/onrc/onos/core/datastore/ramcloud/RCTableID.java
@@ -0,0 +1,60 @@
+package net.onrc.onos.core.datastore.ramcloud;
+
+import java.util.Objects;
+
+import net.onrc.onos.core.datastore.IKVTableID;
+
+public class RCTableID implements IKVTableID {
+    private final String tableName;
+    private long tableID;
+
+    public RCTableID(String tableName) {
+        this.tableName = tableName;
+        this.tableID = 0;
+    }
+
+    @Override
+    public String getTableName() {
+        return tableName;
+    }
+
+    // following is RAMCloud specific
+
+    public long getTableID() {
+        if ( tableID != 0) {
+            return tableID;
+        }
+        tableID = RCClient.getJRamCloudClient().createTable(tableName);
+        return tableID;
+    }
+
+    void resetTableID() {
+        this.tableID = 0;
+    }
+
+    @Override
+    public String toString() {
+        return "["+tableName + "]@" + getTableID();
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(tableName, getTableID());
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        RCTableID other = (RCTableID) obj;
+        return Objects.equals(tableName, other.tableName)
+                && Objects.equals(getTableID(), other.getTableID());
+    }
+}
\ No newline at end of file