eu.dnetlib dnet-hadoop-parent 1.0.0-SNAPSHOT 4.0.0 eu.dnetlib dnet-openaire-data-protos jar 3.0.0-SNAPSHOT com.google.protobuf.tools maven-protoc-plugin generate-sources generate-sources compile ${basedir}/src/main/resources/ **/*.proto dtrott http://maven.davidtrott.com/repository com.google.protobuf protobuf-java ${google.protobuf.version}