ESRIMapOLAPDataModel: Basic Requirements

The main responsibility of a ESRIMapOLAPDataModel is to map data members from an OLAP data structure to the color of map regions. bar chart.

To access OLAP data for a graph, you must know the name of the OLAP host server and connect to that server with a valid username and password. To use the OLAP data in an ESRIMapOLAPDataModel, you must

• create an OLAPDataSet, either from the result set of a query that is executed on an OLAP provider or from the metadata that has been mapped to the OLAP data
• assign the OLAPDataSet to a ESRIMapOLAPDataModel
• assign the ESRIMapOLAPDataModel to a OLAPESRIMapChart.

The following code fragment generates a map chart that shows product sums for selected products and years on the map, with each state being colored by it's response value.

// Create strings to store an SQL query, the OLAP server name,
// and the connection port.
String OLAP_QUERY="SELECT CROSSJOIN({[GEOGRAPHY].[USREGION].MEMBERS},"
                   + "{[PRODUCTLINE].[PRODUCT].MEMBERS}) ON COLUMNS,"
                   + "{[TIME].[YEAR].MEMBERS} ON ROWS "
                   + "FROM MYOLAPCUBE WHERE ([Measures].[ACTUAL_SUM])"; // specify valid OLAP source
   String OLAP_SERVER="myOlapServer.com"; // use a valid server name
   int OLAP_PORT=8800;                    // use a valid port

// Create an ESRIMapOLAPDataModel from an OLAPDataSet.
   ESRIMapOLAPDataModel olapDataModel = null;
   try {
        // OLAPDataSet arguments: host, port, username, pwd, query
           olapDataModel=new ESRIMapOLAPDataModel(
           new OLAPDataSet(OLAP_SERVER, OLAP_PORT, "myUsername", "myPwd",
                           OLAP_QUERY));
       } catch (Exception ex) { ex.printStackTrace(); }

// Create a ESRIMap tbean that uses the ESRIMapOLAPDataModel as its data model
   OLAPESRIMapChart mapChart=new OLAPESRIMapChart();
   mapChart.setDataModel(olapDataModel);