A diagram component ( IlvDiagrammer instance) has an associated SDM
engine instance. By default, the SDM engine is connected to the
default SDM model.
There are several ways for you to load data
into a diagram component:
XML data source
The simplest way of loading data into an IlvDiagrammer instance is to load an XML
file containing the descriptions of the objects to add to the
model.
If you have available an XML file in diagram format, you can load
it directly in the Designer without needing to write any Java™ code.
The data model implementation is class IlvDefaultSDMModel with user-defined types
(tags) read from the XML file.
To load an XML file and display its
contents in Java code, use:
diagrammer.getEngine().setXMLFile("file:example.xml");
For details of the advanced uses of XML, see Handling XML data files in Java.
JDBC data source
You can load a JDBC™ -compliant
database into the Designer without needing to write any Java
code. For an example, see Importing data from a database in Using the Designer.
The data model implementation is class IlvJDBCSDMModelwith no user-defined types.
Flat file data source
You can load data from a flat file, for example, a
comma-separated values (CSV) file, into the Designer without
needing to write any Java code. For an example, see Importing data from a flat file in Using the Designer.
The data model implementation is class IlvDefaultSDMModel with no user-defined
types.
In-memory data source
If you use the in-memory data source, you
effectively load a basic data model and you can extend it in the
Designer without needing to write any Java code.
The initial data model implementation is class IlvDefaultSDMModel and you can add
user-defined types in the Designer.
Custom data model
If you have written custom data model classes, you can assign the
data model to the SDM engine of an IlvDiagrammer instance as follows:
IlvSDMModel sdmModel = new MyModel(); diagrammer.getEngine().setModel(sdmModel);
The data model implementation is
user-defined.