GUI -- Refactored DeviceTableRow to use abstract super class.
- added type and chassis ID to table data

Change-Id: I5758bfb3f9dcd659325265d734ffe9aa7ae1b0ad
diff --git a/web/gui/src/main/java/org/onosproject/gui/AbstractTableRow.java b/web/gui/src/main/java/org/onosproject/gui/AbstractTableRow.java
new file mode 100644
index 0000000..7be7172
--- /dev/null
+++ b/web/gui/src/main/java/org/onosproject/gui/AbstractTableRow.java
@@ -0,0 +1,65 @@
+/*
+ * 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.gui;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
+import java.util.HashMap;
+import java.util.Map;
+
+
+/**
+ * Provides a partial implementation of {@link TableRow}.
+ */
+public abstract class AbstractTableRow implements TableRow {
+
+    private static final ObjectMapper MAPPER = new ObjectMapper();
+
+    private final Map<String, String> data = new HashMap<>();
+
+    @Override
+    public String get(String key) {
+        return data.get(key);
+    }
+
+    @Override
+    public ObjectNode toJsonNode() {
+        ObjectNode result = MAPPER.createObjectNode();
+        for (String id : columnIds()) {
+            result.put(id, data.get(id));
+        }
+        return result;
+    }
+
+    /**
+     * Subclasses must provide the list of column IDs.
+     *
+     * @return array of column IDs
+     */
+    protected abstract String[] columnIds();
+
+    /**
+     * Add a column ID to value binding.
+     *
+     * @param id the column ID
+     * @param value the cell value
+     */
+    protected void add(String id, String value) {
+        data.put(id, value);
+    }
+}