Using the Informix spatial data source

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The IlvInformixDataSource class is an IlvMapDataSource for reading georeferenced objects from an Informix® spatial datablade. It wraps up all operations (connecting to database, reading features, rendering them to graphic objects) in a convenient way.

To read a map stored in an Informix spatial datablade:

Create a connection to the Informix Spatial datablade:

IlvInformixConnectionInfo cx = new IlvInformixConnectionInfo(); 
cx.setHostName("server_hostname");
cx.setHostPort("9088");
cx.setUser("an_informix_user");
cx.setServer("informix_server_name");
cx.setPassword("password");
cx.setDatabaseName("database_name");

Create a data source with this connection as a parameter:

// we want to fetch layer "AN_INFORMIX_USER.WORLD.GEOM.SRID=0"
String layerName="AN_INFORMIX_USER.WORLD.GEOM.SRID=0";
IlvInformixDataSource dataSource=new IlvInformixDataSource(cx, layerName);

To obtain a list of layers, see Getting a list of layers

Set parameters on this data source to use load-on-demand, if needed:

boolean useTiling = true;
int rowCount = 5;
int columnCount = 5;
dataSource.setTilingParameters(useTiling, rowCount, columnCount);

Connect this data source to the manager of the view:
```
dataSource.setManager(getView().getManager());
```
Insert the data source map layer into the layer tree: You first need to retrieve the layer model from the property of the manager:
```
IlvMapLayerTreeModel mltm = IlvMapLayerTreeProperty.GetMapLayerTreeModel(v.getManager());
mltm.addChild(null, dataSource.getInsertionLayer());
```
Insert the data source into the data source tree. You first need to retrieve the data source model from the property of the manager:
```
IlvMapDataSourceModel dataSourceModel = 
IlvMapDataSourceProperty.GetMapDataSourceModel(manager);
dataSourceModel.insert(dataSource);
```
Finally, start the data source (or the whole model, if you have more than one data source):
```
IlvDBConnectionInfo cx=…;
String[] layersList = cx.getSpatiallyEnabledTableNames();
```

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The IBM spatial database readers