Bryan, Yes, this is what I need.
Also, need a call like terminateConnection( boolean autoTerminate, Relationship rel ) Need this at runtime as relationships are dynamically created. Thank you. Rick > On Sep 22, 2015, at 8:06 AM, Bryan Bende <[email protected]> wrote: > > Not sure if this is exactly what everyone is looking for, but if you are > working against master (0.3.1-SNAPSHOT) then the ProcessContext interface > now has two new methods: > > boolean hasIncomingConnection(); > boolean hasConnection(Relationship relationship); > > This way a processor can check hasIncomingConnection() to know if it should > expect incoming FlowFiles, and can check hasConnection(Relationship) to > know if it should even bother transferring a FlowFile to an outgoing > relationship. > These were added in support of making ExecuteSQL work with and without > incoming FlowFiles [1]. > > -Bryan > > [1] https://issues.apache.org/jira/browse/NIFI-932 > > >> On Tue, Sep 22, 2015 at 6:32 AM, Joe Witt <[email protected]> wrote: >> >> Hello >> >> Addressing Grace's question: >> >> What you are looking for is 'context' and the way context is included >> is on attributes of a given FlowFile. You can, for example, use >> UpdateAttribute to set that context in the proper part of the flow >> preceding your custom processor. >> >> Addressing Rick's comment: >> >> I think we mentioned we could add a way to annotate relationships on >> processors as being auto-terminated by default. Not aware of a JIRA >> for this yet though. It simply provides a way for the processor to >> developer to signal the default behavior is that a relationship is >> unused and that is ok vs our current approach which says each >> relationship must be chosen as terminated or connected. >> >> Thanks >> Joe >> >>> On Mon, Sep 21, 2015 at 11:26 PM, Rick Braddy <[email protected]> wrote: >>> Me, too. >>> >>> And I need the ability to determine which connection(s) are linked to >> each relationship, along with a way to auto-terminate unused relationships >> from my processor. >>> >>> Thanks >>> Rick >>> >>>> On Sep 21, 2015, at 10:22 PM, Huang, Jie <[email protected]> wrote: >>>> >>>> Hi all, >>>> >>>> I need to get the connection information or parents for further action >> in onTriger event. >>>> Is there any way to get the upstream connections or parent processors >> from any customized Processor? >>>> >>>> Thank you && Best Regards, >>>> Grace （Huang Jie) >>
