add default columns to table definition

Author: tanjjj

vuu/src/main/scala/org/finos/vuu/api/TableDef.scala

@@ -117,12 +117,16 @@ class SessionTableDef(name: String,
 
 class TableDef(val name: String,
                val keyField: String,
-               val columns: Array[Column],
+               val customColumns: Array[Column],
                val joinFields: Seq[String],
                val autosubscribe: Boolean = false,
                val links: VisualLinks = VisualLinks(),
                val indices: Indices) extends VuuInMemPluginLocator {
 
+  private val createdTimestampColumn: SimpleColumn = SimpleColumn(DefaultColumnNames.CreatedTime, customColumns.length, DataType.fromString("long"))
+  private val updatedTimestampColumn: SimpleColumn = SimpleColumn(DefaultColumnNames.CreatedTime, customColumns.length + 1, DataType.fromString("long"))
+  val columns: Array[Column] = customColumns ++ Array(createdTimestampColumn, updatedTimestampColumn)
+
   private var module: ViewServerModule = null;
   private var permissionFunc: (ViewPort, TableContainer) => RowPermissionChecker = null
 

vuu/src/main/scala/org/finos/vuu/core/table/DefaultColumnNames.scala

@@ -0,0 +1,6 @@
+package org.finos.vuu.core.table
+
+object DefaultColumnNames {
+  val CreatedTime: String = "vuuCreatedTimestamp"
+  val LastUpdatedTime: String = "vuuUpdatedTimestamp"
+}

vuu/src/main/scala/org/finos/vuu/core/table/TableData.scala

@@ -1,7 +1,5 @@
 package org.finos.vuu.core.table
 
-import org.finos.toolbox.collection.array.ImmutableArray
-
 trait TableData {
   def dataByKey(key: String): RowData
   def update(key: String, update: RowData): TableData