transitGraphDao is null in ExtendedCalendarServiceImpl

[oscar.j...@gmail.com]

Hi all, 

I am creating the data transit bundle OBA for a recent updated GTFS and I'am getting the exception below:

2020-09-14 01:31:59,960 ERROR [FederatedTransitDataBundleCreatorMain.java:220] : error building transit data bundle

java.lang.IllegalStateException: error invoking refresh method=public void org.onebusaway.transit_data_federation.impl.ExtendedCalendarServiceImpl.start() on target object=org.onebusaway.transit_data_federation.impl.ExtendedCalendarServiceImpl@3f67f5ff

at org.onebusaway.container.refresh.RefreshServiceImpl.invokePair(RefreshServiceImpl.java:133)

at org.onebusaway.container.refresh.RefreshServiceImpl.refresh(RefreshServiceImpl.java:45)

at org.onebusaway.transit_data_federation.bundle.tasks.CalendarServiceDataTask.run(CalendarServiceDataTask.java:90)

at org.onebusaway.transit_data_federation.bundle.FederatedTransitDataBundleCreator.run(FederatedTransitDataBundleCreator.java:192)

at org.onebusaway.transit_data_federation.bundle.FederatedTransitDataBundleCreatorMain.run(FederatedTransitDataBundleCreatorMain.java:218)

at org.onebusaway.transit_data_federation.bundle.FederatedTransitDataBundleCreatorMain.main(FederatedTransitDataBundleCreatorMain.java:91)

Caused by: java.lang.reflect.InvocationTargetException

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.base/java.lang.reflect.Method.invoke(Method.java:564)

at org.onebusaway.container.refresh.RefreshServiceImpl.invokePair(RefreshServiceImpl.java:131)

... 5 more

Caused by: java.lang.NullPointerException

at org.onebusaway.transit_data_federation.impl.transit_graph.TransitGraphDaoImpl.getAllBlocks(TransitGraphDaoImpl.java:121)

at org.onebusaway.transit_data_federation.impl.ExtendedCalendarServiceImpl.determineAllServiceIds(ExtendedCalendarServiceImpl.java:442)

at org.onebusaway.transit_data_federation.impl.ExtendedCalendarServiceImpl.cacheServiceDatesForServiceIds(ExtendedCalendarServiceImpl.java:415)

at org.onebusaway.transit_data_federation.impl.ExtendedCalendarServiceImpl.start(ExtendedCalendarServiceImpl.java:96)

... 10 more

2020-09-14 01:31:59,960 INFO  [AbstractApplicationContext.java:1002] : Closing org.springframework.context.support.GenericApplicationContext@11531931: startup date [Mon Sep 14 01:31:30 EDT 2020]; root of context hierarchy

It seems the _transitGraphDao object in ExtendedCalendarServiceImpl is null. What may be causing this error?

Thanks

Oscar

[Sheldon A. Brown]

Sorry Oscar,

I can't say based on that stack trace alone. Does the bundle build if
you use the previous GTFS?

Sheldon

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[oscar.j...@gmail.com]

Hi Sheldon,

I was getting exactly the same error if I used previous GTFS, which is weird because we haven't seen this error before. The only unusual thing we saw this time is the following warning:

WARNING: An illegal reflective access operation has occurred

WARNING: Illegal reflective access by org.dom4j.io.SAXContentHandler (file:/../../onebusaway-transit-data-federation-builder-2.0.0-withAllDependencies.jar) to method com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser$LocatorProxy.getEncoding()

WARNING: Please consider reporting this to the maintainers of org.dom4j.io.SAXContentHandler

WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations

WARNING: All illegal access operations will be denied in a future release

We realized that we recently upgraded Java to the latest version, so we reverted to Java 8 and now the error has gone. We need to find a better solution to this issue though.

Thanks

Oscar

[oscar.j...@gmail.com]

[UPDATE]: I tried two different OBA versions (1.1.14 and 2.0.0) and got the same error. The Java version which seemed to be incompatible with OBA was Java SE 14. There are no compatibility issues with Java SE 8 

[Sean Barbeau]

This might be the bundle building issue here:

https://github.com/OneBusAway/onebusaway-application-modules/issues/244

Sean