[SANDBOX-86] [javaflow] calling javaflow from javaflow

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: Javaflow

Environment

Operating System: other
Platform: Other

• Bugzilla Id: 37187
• Assignee: Unassigned
• Reporter: Benoit Deshaies
• Created: 21/Oct/05 04:20
• Updated: 29/Dec/09 01:40

Description

I get an error whenever I include an <fd:selection-list src="cocoon:/XYZ"> where
both the form and the XYZ pipeline use JavaFlow. The error is:

No continuation is running
cause: java.lang.IllegalStateException: No continuation is running
java.lang.IllegalStateException: No continuation is running
at
org.apache.cocoon.components.flow.java.Continuation.suspend(Continuation.java:79)
at
org.apache.cocoon.components.flow.java.AbstractContinuable.sendPageAndWait(AbstractContinuable.java:75)
at org.apache.cocoon.forms.flow.java.FormInstance.show(FormInstance.java:181)

The reason is that when cocoon:/XYZ runs, a continuation is created for the same
thread as the form continuation. The continuationsmap in Continuation class gets
overwritten. When cocoon:/XYZ returns, the map is cleared for the thread,
leaving no continuation for the form.

Here's a bit of code from the app to help explain.

The form contains a selection list defined as:
<fd:field id="user">
<fd:datatype base="string"/>
<fd:selection-list src="cocoon:/UserSelectList" dynamic="true"/>
</fd:field>

The sitemap contains:
<map:match pattern="UserSelectList">
<map:call function="generateUserList"/>
</map:match>

Then I have the following JavaFlow
public void doGenerateUserList() throws Exception {
Collection userList = databaseManager.getUserList();
sendPage("user_list", new VarMap().add("list", userList) );
}