The IlvDiagrammerServlet class in the package ilog.views.diagrammer.servlet is a concrete
servlet class that handles HTTP requests to build an image of the
diagram.
This class accepts one parameter: the
project file which refers to the XML data file and the style sheet
on which the diagram is based.
This parameter can be specified at
initialization time (as a static configuration parameter of the
servlet) or dynamically in the request URL.
The JViews Diagrammer
servlet can work in two modes, depending on the value of the
multiSession
configuration parameter:
- Mono-session mode: If
multiSessionis false, only one SDM engine and one SDM view (and one grapher) are created. All the requests to the servlet return an image of the same shared diagram. This option is appropriate if the users are not allowed to modify the contents of the diagram or if the changes should be visible by all users. - Multi-session mode: If
multiSessionis true, a new SDM engine (with its associated SDM view and grapher) is created for every different client session connected to the servlet. This mode is appropriate if users are allowed to modify the XML file or the style sheet.
By default, the servlet runs in mono-session
mode.
The class IlvDiagrammerServlet provides support for
client-side image maps. The image map can be used to attach actions
to every node or link displayed in the diagram.
The class IlvDiagrammerServlet is a subclass of IlvManagerServlet that is using the same
protocols as IlvDiagrammerServlet to communicate with
clients.