[error] (run-main-0) java.util.NoSuchElementException: head of empty array

[oratosa]

I tried both of patterns to run the program but I got failed the running. I would like some advice if you know any solution.

What I did is as below:

• From sbt

  • command sbt:covid19_knowledge_graph> run /home/taroaso/covid19-knowledge-graph/data/CORD-19_files/comm_use_subset /home/taroaso/covid19-knowledge-graph/data/annie_extraction_files
  • result [info] running gov.nasa.jpl.covid19_knowledge_graph.covid19_knowledge_graph /home/taroaso/covid19-knowledge-graph/data/CORD-19_files/comm_use_subset /home/taroaso/covid19-knowledge-graph/data/annie_extraction_files loading [error] (run-main-0) java.util.NoSuchElementException: head of empty array [error] java.util.NoSuchElementException: head of empty array [error] at scala.collection.ArrayOps$.head$extension(ArrayOps.scala:222) [error] at gov.nasa.jpl.covid19_knowledge_graph.covid19_knowledge_graph$.loadAFileJSON(covid19_knowledge_graph.scala:76) [error] at gov.nasa.jpl.covid19_knowledge_graph.covid19_knowledge_graph$.$anonfun$main$3(covid19_knowledge_graph.scala:39) [error] at gov.nasa.jpl.covid19_knowledge_graph.covid19_knowledge_graph$.$anonfun$main$3$adapted(covid19_knowledge_graph.scala:38) [error] at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1323) [error] at gov.nasa.jpl.covid19_knowledge_graph.covid19_knowledge_graph$.main(covid19_knowledge_graph.scala:38) [error] at gov.nasa.jpl.covid19_knowledge_graph.covid19_knowledge_graph$.main(covid19_knowledge_graph.scala:16) [error] at gov.nasa.jpl.covid19_knowledge_graph.covid19_knowledge_graph.main(covid19_knowledge_graph.scala) [error] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [error] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [error] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [error] at java.lang.reflect.Method.invoke(Method.java:498) [error] stack trace is suppressed; run last Compile / bgRun for the full output [error] Nonzero exit code: 1 [error] (Compile / run) Nonzero exit code: 1

• As a standalone JAR

  • command java -jar ./target/scala-2.13/covid19_knowledge_graph-assembly-0.1.0-SNAPSHOT.jar '/home/taroaso/covid19-knowledge-graph/data/CORD-19_files/comm_use_subset' '/home/taroaso/covid19-knowledge-graph/data/annie_extraction_files'
  • result loading Exception in thread "main" java.util.NoSuchElementException: head of empty array at scala.collection.ArrayOps$.head$extension(ArrayOps.scala:222) at gov.nasa.jpl.covid19_knowledge_graph.covid19_knowledge_graph$.loadAFileJSON(covid19_knowledge_graph.scala:76) at gov.nasa.jpl.covid19_knowledge_graph.covid19_knowledge_graph$.$anonfun$main$3(covid19_knowledge_graph.scala:39) at gov.nasa.jpl.covid19_knowledge_graph.covid19_knowledge_graph$.$anonfun$main$3$adapted(covid19_knowledge_graph.scala:38) at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1323) at gov.nasa.jpl.covid19_knowledge_graph.covid19_knowledge_graph$.main(covid19_knowledge_graph.scala:38) at gov.nasa.jpl.covid19_knowledge_graph.covid19_knowledge_graph$.main(covid19_knowledge_graph.scala:16) at gov.nasa.jpl.covid19_knowledge_graph.covid19_knowledge_graph.main(covid19_knowledge_graph.scala)

[lewismc]

Hi @oratosa I apologize for the late reply. I was very busy. First thing first, please ensure you are using master branch. Secondly, make sure you have the OpenIE server running on localhost:8000

The NoSuchElementException indicates to me that your input data is not structured properly. For example, when I run the following, I am able to iteratively process the files without issue.

sbt:covid19_knowledge_graph> run /Users/lmcgibbn/Downloads/covid19-knowledge-graph/data/comm_use_subset /Users/lmcgibbn/Downloads/covid19-knowledge-graph/data/scispacy/individual_files
[info] running gov.nasa.jpl.covid19_knowledge_graph.covid19_knowledge_graph /Users/lmcgibbn/Downloads/covid19-knowledge-graph/data/comm_use_subset /Users/lmcgibbn/Downloads/covid19-knowledge-graph/data/scispacy/individual_files
      loading /Users/lmcgibbn/Downloads/covid19-knowledge-graph/data/scispacy/individual_files/000b7d1517ceebb34e1e3e817695b6de03e2fa78.json
  loading /Users/lmcgibbn/Downloads/covid19-knowledge-graph/data/comm_use_subset/000b7d1517ceebb34e1e3e817695b6de03e2fa78.json
...

Do you have the scispacy dataset as your second parameter?