org.ow2.bonita.pvm.model.Transition Maven / Gradle / Ivy
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package org.ow2.bonita.pvm.model;
/**
* a transition in a {@link OpenProcessDefinition} graph.
*
* Guard conditions
*
* TODO
*
*
* Transitions as wait states
*
* A wait condition indicates wether a transition is to be taken synchronously
* or wether the transition will behave as a wait state.
*
*
*
* Transitions that are wait states can occur when an analyst has an actual
* state (e.g. 'making loss') and a desired state (e.g. 'making profit') and
* models a transition between those states. In that case the transition might
* take a long time and hence it results into a wait state for the system.
*
*
*
* If the wait condition is null or if it returns false, then the transition
* will be taking synchronously. Otherwise the transition will behave as a wait
* state and wait for a signal on the execution.
*
*
*
* Transitions as wait states has every thing to do with matching the process
* graph to transactions on the server. If the transition is taken in one (the
* current) transaction, then the async condition should be empty or evaluate to
* false. If the arrival of the execution in the destination node should occur
* in a separate execution
*
* @author Tom Baeyens
*/
public interface Transition extends ObservableElement {
/** the node from which this transition leaves. */
Node getSource();
/** the node in which this transition arrives. */
Node getDestination();
/**
* the general purpose condition that can be used in various ways by the
* activities.
*/
Condition getCondition();
}