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https://issues.apache.org/jira/browse/PROTON-261?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Justin Ross updated PROTON-261:
-------------------------------
Fix Version/s: 0.17.0
> pn_delivery_local_state and pn_delivery_remote_state can return a zero value
> (outside that defined by the pn_disposition_t enum)
> --------------------------------------------------------------------------------------------------------------------------------
>
> Key: PROTON-261
> URL: https://issues.apache.org/jira/browse/PROTON-261
> Project: Qpid Proton
> Issue Type: Bug
> Components: proton-c
> Affects Versions: 0.5
> Reporter: Keith Wall
> Fix For: 0.17.0
>
>
> In proton-c, pn_delivery_local_state and pn_delivery_remote_state are defined
> as returning an pn_disposition_t:
> PN_EXTERN pn_disposition_t pn_delivery_local_state(pn_delivery_t *delivery);
> PN_EXTERN pn_disposition_t pn_delivery_remote_state(pn_delivery_t *delivery);
> with pn_disposition_t defined as:
> typedef enum pn_disposition_t {
> PN_RECEIVED=1,
> PN_ACCEPTED=2,
> PN_REJECTED=3,
> PN_RELEASED=4,
> PN_MODIFIED=5
> } pn_disposition_t;
> However, there are circumstances when the proton-c implementation returns a
> value outside this enumeration - value 0 - coming for the struct
> initialisation in pn_delivery(). What does this value mean and how is an
> application supposed to react to this value? Are there an implicit
> restrictions regarding when an application may call
> pn_delivery_local_state/pn_delivery_remote_state?
> btw. This question arises from work on PROTON-257. Proton-jni (Swig
> generated code - so called "Proper enums" - see
> http://www.swig.org/Doc2.0/Java.html#Java_proper_enums_classes) is failing to
> decode the enum when testing the state of a newly created Delivery.
> test(org.apache.qpid.proton.systemtests.ProtonEngineExampleTest) Time
> elapsed: 0.109 sec <<< ERROR!
> java.lang.IllegalArgumentException: No enum class
> org.apache.qpid.proton.jni.pn_disposition_t with value 0
> at
> org.apache.qpid.proton.jni.pn_disposition_t.swigToEnum(pn_disposition_t.java:32)
> at
> org.apache.qpid.proton.jni.Proton.pn_delivery_local_state(Proton.java:624)
> at
> org.apache.qpid.proton.engine.jni.JNIDelivery.getLocalState(JNIDelivery.java:100)
> at
> org.apache.qpid.proton.systemtests.ProtonEngineExampleTest.test(ProtonEngineExampleTest.java:190)
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