The IlvMapServlet class is a concrete servlet
class that handles HTTP requests to build an image of a 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.
IlvMapServlet
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.
IlvMapServlet
extends IlvDiagrammerServlet, it uses the same
protocols as IlvManagerServlet to communicate with
clients.
IlvMapServlet
is also subclass of IlvSDMServlet and inherits its session
capabilities. Depending on the value of the
multiSession
configuration parameter, the JViews
Maps servlet can work in either mono-session or multi-session
mode. By default, the servlet runs in mono-session mode. See Mono-session and multi-session modes for more
information.
Mono-session and multi-session modes
Name |
Description |
|---|---|
Mono-session |
If
multiSession
is set to
false
, one SDM engine and one SDM view, including 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 |
If
multiSession
is set to
true
, a new SDM engine, and 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.
|