CONTENTS

196 I. LAZĂR, S. MOTOGNA, AND B. PÂRV(1)
Figure 2. (a) Creating a New Action (b) Domain Classes
generating identity properties and basic persistence operations - Figure 2 - (b). See
[5] for more details about our Object-Relational Mapping infrastructure.
C. Create a new conversation and design its flow. As for actions, we are
prompted to enter the conversation name and to choose its owner component. Figures
3 and 4 present the result of creating a NewCustomer conversation and a new
EditCustomer owner component: an EditCustomer class associated to the ConversationScope
is created and a NewCustomer state machine is added in the context of
this class. At this stage, the generated artifacts do not contain other elements. For
saving space, Figures 3 and 4 show only the final result of the model prototype.
Now we design the states and the conversation flow. Before running the model
prototype we change the content of Index in order to execute our conversation - see
Figure 5. A view is dynamically generated for each state. At the moment, we have
obtained an executable conversation, but no data is presented. Next, we are going to
enhance our conversation by adding actions and establishing data bindings.
Figure 3. NewCustomer State Machine
D. Add actions to a conversation. At this step we add behaviors to the state
machine in order to produce the data required by the conversation. fUML activities
may be added for specifying behaviors to be performed on a transition when the
transition fires, or as entry/exit behaviors executed when a state is entered/exited. All
activities must belong to the component, in order to easily access the conversational
state. Figures 3 and 4 show the result of this process for our case study. initialize is
added to create a new customer instance, save is added to store the new customer,
and checkPassword is an intermediate step.
Figure 4. EditCustomer Controller
E. Generate views. Finally we can generate the views - see Figure 5. The views
contain only presentation elements together with their mappings, the navigation part
being defined by the state machine. When running the model prototype, actions