/**
* Retrieve the current Spring flowId (if any).
*
* @return The current Spring flowId.
*/
public static String getSpringFlowId() {
if (!isSpringEnvironment()) {
return null;
}
FacesContext facesContext = FacesContext.getCurrentInstance();
// obtain key by evaluating expression with Spring VariableResolver
Object value = null;
if (1 == springLoaded) {
value =
facesContext
.getApplication()
.createValueBinding("#{flowExecutionKey}")
.getValue(facesContext);
if (null != value) {
// Spring Web Flow 1.x confirmed
flowIdParameterName = "_flowExecutionKey";
}
} else if (2 == springLoaded) {
value =
RequestContextHolder.getRequestContext().getFlowExecutionContext().getKey().toString();
if (null != value) {
// Spring Web Flow 2.x confirmed
flowIdParameterName = "org.springframework.webflow.FlowExecutionKey";
}
}
if (null == value) {
return null;
}
return value.toString();
}
@Override
public Object getState(FacesContext facesContext, String viewId) {
if (!JsfUtils.isFlowRequest()) {
return super.getState(facesContext, viewId);
}
RequestContext requestContext = RequestContextHolder.getRequestContext();
Object state = requestContext.getViewScope().get(FACES_VIEW_STATE);
if (state == null) {
logger.debug("No matching view in view scope");
}
return state;
}
private String getFlowExecutionKey() {
RequestContext requestContext = RequestContextHolder.getRequestContext();
return requestContext.getFlowExecutionContext().getKey().toString();
}
private void saveState(Object state) {
RequestContext requestContext = RequestContextHolder.getRequestContext();
requestContext.getViewScope().put(FACES_VIEW_STATE, state);
}