com.prosyst.mprm.rule.time.constraint

Interface TimeConstraint

All Superinterfaces:

Externalizable

All Known Subinterfaces:

TimeConstraintBE

All Known Implementing Classes:

CronConstraint

public interface TimeConstraint
extends Externalizable

Implementations of this interface define time constraint (or time schedule limitations) appointing the allowed time when a Task is allowed to Run. Values of this type can be provided in the ExecOptions#timeConstraint(TimeConstraint) method of the execution options of Tasks and Rules. The system provides a standard implementations of the TimeConstraint interface, namely - the CronConstraint class, which allows defining of Tasks working time via Cron expressions. Besides using the standard system-provided implementation, the system also allows custom implementations of TimeConstraint to be provided by the users in order to define more specific time scheduling limitation, which is beyond the scope of the standard system-provided implementations. Custom implementations should take into account that

they must implement Externalizable, i.e., must make their objects transferable to the backend they must provide the implementation classes on the backend, i.e., java packages should exported on backend osgi framework (Export-Package bundle manifest header) it is recommended to provide text-representation of the time constraint definitions, so that custom definitions can participate in the textual representation/definition of Rules and Tasks. Handling of text representations can be done by a service - com.prosyst.mprm.backend.rules.spi.time.constraint.TimeConstraintProvider registered on the backend. The service should declare the same type as the type provided in getType() of the custom TimeConstraint object.