Change row data type from String[] to String (#13334)

Instead of having the data type as one-string-per-column, we now have the entire
row encoded as JSON

Change-Id: I709b2daa88c516d98203ef463b57257a6647bacd

2 files changed, 24 insertions, 5 deletions

diff --git a/shared/src/com/vaadin/shared/data/DataProviderRpc.java b/shared/src/com/vaadin/shared/data/DataProviderRpc.java
index a2f85159ba..a92ffe0421 100644
--- a/shared/src/com/vaadin/shared/data/DataProviderRpc.java
+++ b/shared/src/com/vaadin/shared/data/DataProviderRpc.java
@@ -16,8 +16,6 @@
 
 package com.vaadin.shared.data;
 
-import java.util.List;
-
 import com.vaadin.shared.communication.ClientRpc;
 
 /**
@@ -31,14 +29,28 @@ public interface DataProviderRpc extends ClientRpc {
     /**
      * Sends updated row data to a client.
      * <p>
-     * TODO rowData should be List<Object[]>
+     * rowDataJson represents a JSON array of JSON objects in the following
+     * format:
+     * 
+     * <pre>
+     * [{
+     *   "d": [COL_1_JSON, COL_2_json, ...]
+     * },
+     * ...
+     * ]
+     * </pre>
+     * 
+     * where COL_INDEX is the index of the column (as a string), and COL_n_JSON
+     * is valid JSON of the column's data.
      * 
      * @param firstRowIndex
      *            the index of the first updated row
-     * @param rowData
+     * @param rowDataJson
      *            the updated row data
+     * @see com.vaadin.shared.ui.grid.GridState#JSONKEY_DATA
+     * @see com.vaadin.ui.components.grid.Renderer#encode(Object)
      */
-    public void setRowData(int firstRowIndex, List<String[]> rowData);
+    public void setRowData(int firstRowIndex, String rowDataJson);
 
     /**
      * Informs the client to remove row data.
diff --git a/shared/src/com/vaadin/shared/ui/grid/GridState.java b/shared/src/com/vaadin/shared/ui/grid/GridState.java
index acb2a48e3c..eceaedd1fc 100644
--- a/shared/src/com/vaadin/shared/ui/grid/GridState.java
+++ b/shared/src/com/vaadin/shared/ui/grid/GridState.java
@@ -37,6 +37,13 @@ public class GridState extends AbstractComponentState {
      */
     public static final double DEFAULT_HEIGHT_BY_ROWS = 10.0d;
 
+    /**
+     * The key in which a row's data can be found
+     * {@link com.vaadin.shared.data.DataProviderRpc#setRowData(int, List)
+     * DataProviderRpc.setRowData(int, List)}
+     */
+    public static final String JSONKEY_DATA = "d";
+
     {
         // FIXME Grid currently does not support undefined size
         width = "400px";