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public interface ExternalActivity
extends Activity
for handling external triggers after a wait state.
Process languages will provide a set of these node implementations. But languages like jPDL even allow users to provide their own node behaviour with this interface.
Method Summary | |
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void |
signal(ActivityExecution execution,
java.lang.String signalName,
java.util.Map<java.lang.String,java.lang.Object> parameters)
handles an external trigger. |
Methods inherited from interface org.ow2.bonita.pvm.activity.Activity |
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execute |
Method Detail |
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void signal(ActivityExecution execution, java.lang.String signalName, java.util.Map<java.lang.String,java.lang.Object> parameters) throws java.lang.Exception
An external trigger that comes into an execution through one of the
Execution#signal()
methods, will be delegated to the node in which
the execution is positioned when it receives the external trigger.
The signal method implements how the node will react on that signal. For example, the outgoing transition could be taken that corresponds with the given signal.
execution
- the Execution
for which the signal is givensignalName
- is an abstract text that can be associated with a signal. this
corresponds to e.g. a method name in a java class interface. The
implementation can decide e.g. to use the signal to identify the
outgoing transition.parameters
- is extra information that can be provided with a signal. In this
way, it is somewhat similar to the parameters that can be fed into
a method invocation through reflection.
java.lang.Exception
- to indicate any kind of failure. Note that exceptions are
considered non recoverable. After an Exception, the execution
should not be used any more and if this is during a transaction,
the transaction should be rolled back.
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