Is dynamic Webflow possible?

[slongdo]

Is dynamically generating spring-webflow possible?

For example: a user selects one or more "Systems" (checkboxes from a page) I then need to handle webflow for the user to select "Roles" for the "Systems" they checked. The list of "Systems" is dynamically pulled from a database as is the list of "Roles" per system. Any advice on how to accomplish this using Spring Webflow?

Ideally I can use the same view for all the "Roles" pages, just passing the appropriate value in the MAV.

Thanks in advance!
-Steve

[klr8]

This is not supported out-of-the box but should definately be possible.
Check the AbstractFlowBuilder class and how you can build flows programatically. You probably also need a custom FlowDefinitionRegistry to build the flows on demand.

I also suggest you study how the system works out-of-the-box: the FlowExecutor will lookup a FlowDefinition in the FlowDefinitionRegistry. The FlowDefinitionRegistry uses a FlowBuilder to actually build a Flow using the definition data (e.g. XML or a Java class).

That should be enough to get you started.

Erwin

[Saloucious]

Hi,

I suppose what your are describing refer to Flow Definition Parameterization in Chapter 10 in your book but what i do not understand is with XML flow definition :

<bean id="flowRegistry"
class="org.springframework.webflow.engine.builder. xml. \
XmlFlowRegistryFactoryBean">
<property name="flowDefinitions">
<value>
editPerson-flow=classpath:editPerson-flow.xml
editOrganization-flow=classpath:editOrganization-flow.xml
</value>
</property>
<property name="flowAttributes">
<map>
<entry key="editPerson-flow">
<map>
<entry key="entityType" value="foo.bar.Person"/>
</map>
</entry>
<entry key="editOrganization-flow">
<map>
<entry key="entityType" value="foo.bar.Organization"/>
</map>
</entry>
</map>
</property>
</bean>

Why :

editPerson-flow=classpath:editPerson-flow.xml
editOrganization-flow=classpath:editOrganization-flow.xml

May be I haven't understand but i expected :

editPerson-flow=classpath:generic-flow.xml
editOrganization-flow=classpath:generic-flow.xml

Thanks

[lewarrior22]

Hi,
I met the same needs. And I wanted to know if you finally found the solution.
best regards
boris.

[quetzalcoatl]

I'm searching for the same answer, does someone know about it ?

Thank you

Hi,
I met the same needs. And I wanted to know if you finally found the solution.
best regards
boris.

[zakhrim]

I would try this way:

1. store the system collection in a flow scoped variable
2. create an action state that checks if the collection is empty:
   
   • if it is empty, conclude the flow (or pass to the next step)
   • if there is at least on element, get and remove it from the collection and pass it to a view state to manage the roles. The view state calls again the action state of point 1. after finishing

Bye,
Stefano

[quetzalcoatl]

Thank you Stefano, i will try your idea.

Regards!!!