OSID - osid.workflow.Step Service Interface Definition

Interface	osid.workflow.Step
Implements	`osid.OsidRule`
Implements	`osid.Subjugateable`
Used By	`osid.workflow.Process`
	`osid.workflow.StepAdminSession`
	`osid.workflow.StepList`
	`osid.workflow.StepLookupSession`
	`osid.workflow.WorkflowSession`
	`osid.workflow.event.WorkflowEvent`
Description	A `Step` is an element in a Process in which Work is processed. The workers in this `Step` are represented by `Resources` or `Resource` groups. The input `States` list the states of `Work` that are valid to be accepted into this `Step`. Successful processing of the `Work` result in a single next `State` that determines the valid next `Steps` in the `Process`.
Method	getProcessId
Description	Gets the `Id` of the process.
Return	`osid.id.Id`		the process `Id`
Compliance	`mandatory`		This method must be implemented.
Method	getProcess
Description	Gets the process.
Return	`osid.workflow.Process`		the process
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getResourceIds
Description	Gets the `Ids` of the resources working in this step.
Return	`osid.id.IdList`		the resource `Ids`
Compliance	`mandatory`		This method must be implemented.
Method	getResources
Description	Gets the resources working in this step.
Return	`osid.resource.ResourceList`		the resources
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getInputStateIds
Description	Gets the `Ids` of the valid states entering this step.
Return	`osid.id.IdList`		the state `Ids`
Compliance	`mandatory`		This method must be implemented.
Method	getInputStates
Description	Gets the valid states to enter this step.
Return	`osid.process.StateList`		the states
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getNextStateId
Description	Gets the `Id` of the state of the work upon completing this step.
Return	`osid.id.Id`		the state `Id`
Compliance	`mandatory`		This method must be implemented.
Method	getNextState
Description	Gets the state of the work upon completing this step.
Return	`osid.process.State`		the state
Errors	OPERATION_FAILED		unable to complete request
Compliance	`mandatory`		This method must be implemented.
Method	getStepRecord
Description	Gets the step record corresponding to the given `Step` record `Type`.This method is used to retrieve an object implementing the requested record. The `stepRecordType` may be the `Type` returned in `getRecordTypes()` or any of its parents in a `Type` hierarchy where `hasRecordType(stepRecordType)` is `true`.
Parameters	`osid.type.Type`	`stepRecordType`	the type of step record to retrieve
Return	`osid.workflow.records.StepRecord`		the step record
Errors	NULL_ARGUMENT		`stepRecordType` is `null`
	OPERATION_FAILED		unable to complete request
	UNSUPPORTED		`hasRecordType(stepRecordType)` is `false`
Compliance	`mandatory`		This method must be implemented.