Add TimestampedTable subclass.

src/main/java/org/elasticsearch/common/Table.java

@@ -31,12 +31,12 @@ import java.util.Map;
  */
 public class Table {
 
-    private List<Cell> headers = new ArrayList<Cell>();
-    private List<List<Cell>> rows = new ArrayList<List<Cell>>();
+    protected List<Cell> headers = new ArrayList<Cell>();
+    protected List<List<Cell>> rows = new ArrayList<List<Cell>>();
 
-    private List<Cell> currentCells;
+    protected List<Cell> currentCells;
 
-    private boolean inHeaders = false;
+    protected boolean inHeaders = false;
 
     public Table startHeaders() {
         inHeaders = true;
@@ -117,7 +117,12 @@ public class Table {
         public final Object value;
         public final Map<String, String> attr;
 
-        Cell(Object value, Map<String, String> attr) {
+        public Cell(Object value) {
+            this.value = value;
+            this.attr = new HashMap<String, String>();
+        }
+
+        public Cell(Object value, Map<String, String> attr) {
             this.value = value;
             this.attr = attr;
         }

src/main/java/org/elasticsearch/common/table/TimestampedTable.java

@@ -0,0 +1,62 @@
+/*
+ * Licensed to ElasticSearch and Shay Banon under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. ElasticSearch licenses this
+ * file to you 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.elasticsearch.common.table;
+
+
+import org.elasticsearch.ElasticSearchIllegalArgumentException;
+import org.elasticsearch.common.Table;
+
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.Locale;
+
+public class TimestampedTable extends Table {
+
+    private Date now;
+
+    public TimestampedTable () {
+        super();
+        this.now = new Date();
+    }
+
+    @Override
+    public Table startHeaders() {
+        inHeaders = true;
+        currentCells = new ArrayList<Cell>();
+        currentCells.add(new Cell("epoch"));
+        currentCells.add(new Cell("time"));
+        return this;
+    }
+
+    @Override
+    public Table startRow() {
+        SimpleDateFormat dfHms = new SimpleDateFormat("HH:mm:ss", Locale.ROOT);
+
+        if (headers.isEmpty()) {
+            throw new ElasticSearchIllegalArgumentException("no headers added...");
+        }
+        currentCells = new ArrayList<Cell>(headers.size());
+        currentCells.add(new Cell(now.getTime() / 1000));
+        currentCells.add(new Cell(dfHms.format(now)));
+        return this;
+    }
+
+}