Hi Pavindu, Avro provides: * Rich data structures. * A compact, fast, binary data format. * A container file, to store persistent data. * Remote procedure call (RPC). * Simple integration with dynamic languages. Code generation is not required to read or write data files nor to use or implement RPC protocols. Code generation as an optional optimization, only worth implementing for statically typed languages.
The Avro specification (https://avro.apache.org/docs/current/spec.html) states "A Schema is represented in JSON by one of..." In OODT, this means that all objects are modeled as Avro schemas. In the case of Filemgr, all of the Avro schemas live in source code management in https://github.com/apache/oodt/tree/master/filemgr/src/main/avro/types and are compiled into the OODT POJOs at compile time courtesy of the avro-maven-plugin https://github.com/apache/oodt/blob/master/filemgr/pom.xml#L247-L295 Please let me know if you have any questions. lewismc On Tue, Jun 8, 2021 at 9:15 PM <dev-digest-h...@oodt.apache.org> wrote: > > dev Digest 9 Jun 2021 04:15:16 -0000 Issue 1518 > > Topics (messages 9049 through 9049) > > cannot resolve avrotypes in oodt filemgr > 9049 by: Pavindu Lakshan > > Administrivia: > > --------------------------------------------------------------------- > To post to the list, e-mail: dev@oodt.apache.org > To unsubscribe, e-mail: dev-digest-unsubscr...@oodt.apache.org > For additional commands, e-mail: dev-digest-h...@oodt.apache.org > > ---------------------------------------------------------------------- > > > > > ---------- Forwarded message ---------- > From: Pavindu Lakshan <pavindulaks...@gmail.com> > To: dev@oodt.apache.org > Cc: > Bcc: > Date: Wed, 9 Jun 2021 09:45:04 +0530 > Subject: cannot resolve avrotypes in oodt filemgr > Hi all, > > When I'm trying to ingest a product, I'm getting the following error. > > *NullPointerException: null of > org.apache.oodt.cas.filemgr.structs.avrotypes.AvroProductType* > > Also in the IntelliJ IDE, I am getting the error *Cannot resolve symbol > 'avrotypes'* > > Turns out, there is no avrotypes struct > in filemgr/src/main/java/org/apache/oodt/cas/filemgr/structs. But they are > imported in AvroFileManagerClient.java[1]. > > Can someone point me out a way to fix this error? Sorry if I'm missing > something obvious. > > Thanks and regards, > Pavindu > > [1] > > https://github.com/apache/oodt/blob/master/filemgr/src/main/java/org/apache/oodt/cas/filemgr/system/AvroFileManagerClient.java > -- http://home.apache.org/~lewismc/ http://people.apache.org/keys/committer/lewismc
