Hi Vitaly, In general, Java does not allow classes outside of the default package to import classes from within the default package.
I think this means that this is expected behavior, given that Avro says non-namespaced schemas generate code in the default package. For your particular issue, this means either restructuring your application so that Main is in the default package or giving the schemas a namespace so they'll be in some package. The latter is preferable; in your example com.company or com.company.serialization would be appropriate. HTH On Fri, Oct 11, 2013 at 3:59 PM, Vitaly Gordon <vita...@gmail.com> wrote: > Hi Doug, > I've attached a maven project that contains code that shows the problem. > The code is basically the same one from the Avro guide, but what is > important to observe is that since the Main class has a package define, it > cannot import the classes generated from the namespace-less schema. > > just run mvn:compile to get the compilation errors > > Thanks, > Vitaly > > > On Thu, Oct 10, 2013 at 1:58 PM, Doug Cutting <cutt...@apache.org> wrote: > >> I encourage you to please provide a complete test, code that fails. >> If maven is involved, create a simple, Maven project that illustrates >> the problem. >> >> Thanks, >> >> Doug >> >> On Wed, Oct 9, 2013 at 11:21 PM, Vitaly Gordon <vita...@gmail.com> wrote: >> > Hi Doug, >> > You are right, the code does compile with javac. Apparently it is some >> maven >> > error, where it doesn't like to compile package-less files. >> > >> > Having said that, I still have the issue of not being able to use these >> java >> > files in my code, because there is no way to import them. One thing I >> tried >> > that sometimes work is adding some arbitrary namespace to the avro >> schema. >> > However, when I try to read records using the new (with namespace) >> schema, I >> > get in return a generic record instead of a specific one. This behavior >> can >> > be observed in the same file I attached by adding an arbitrary >> namespace to >> > the schema before generating the Java classes from it. >> > >> > Is there any way to read specific records when the schema that was used >> to >> > write them contains no namespace? >> > >> > Thanks, >> > Vitaly >> > >> > >> > On Wed, Oct 9, 2013 at 6:07 PM, Doug Cutting <cutt...@apache.org> >> wrote: >> >> >> >> Using the current trunk of Avro I am able to: >> >> - extract the schema from the data file you provided (using >> >> avro-tools schema command) >> >> - generate Java classes for this schema (using the avro-tools compile >> >> command) >> >> - compile these generated Java classes (using the javac command) >> >> >> >> Can you provide a complete case of what fails for you? >> >> >> >> Thanks, >> >> >> >> Doug >> >> >> >> On Wed, Oct 9, 2013 at 4:56 PM, Vitaly Gordon <vita...@gmail.com> >> wrote: >> >> > Does anyone else might have an idea how I can resolve this >> >> > "namespace-less" >> >> > Avro schema code generation? >> >> > >> >> > Thanks, >> >> > Vitaly >> >> > >> >> > >> >> > On Mon, Oct 7, 2013 at 2:04 PM, Vitaly Gordon <vita...@gmail.com> >> wrote: >> >> >> >> >> >> Hi Sean, >> >> >> Here is a file that contains a single record that I cannot read >> using a >> >> >> specific reader. >> >> >> >> >> >> It's hard for me to add code because the problem is a compilation >> >> >> problem >> >> >> with the generated Java files. >> >> >> >> >> >> So to recreate the problem: >> >> >> 1. Extract the schema from the record >> >> >> 2. Generate the code from the schema >> >> >> 3. Compile >> >> >> >> >> >> Is there another way that I can describe the issue? >> >> >> >> >> >> >> >> >> >> >> >> On Mon, Oct 7, 2013 at 10:58 AM, Sean Busbey <bus...@cloudera.com> >> >> >> wrote: >> >> >>> >> >> >>> Hi Vitay! >> >> >>> >> >> >>> Can you give us a minimal schema and test program that illustrates >> the >> >> >>> problem you're describing? >> >> >>> >> >> >>> -- >> >> >>> Sean >> >> >>> >> >> >>> On Oct 7, 2013 12:27 PM, "Vitaly Gordon" <vita...@gmail.com> >> wrote: >> >> >>>> >> >> >>>> Hi All, >> >> >>>> I am trying to read Avro data that its schema does not have a >> >> >>>> namespace. >> >> >>>> The problem is that I cannot compile the classes, because the >> >> >>>> generated Java >> >> >>>> code does not have a package. On the other hand, if I do add some >> >> >>>> arbitrary >> >> >>>> namespace to the schema, the record is resolved as a generic one, >> >> >>>> which then >> >> >>>> fails on ClassCastException to the specific record. >> >> >>>> >> >> >>>> Any ideas on how I can resolve this issue? >> >> >>>> >> >> >>>> Thanks, >> >> >>>> Vitay >> >> >> >> >> >> >> >> > >> > >> > >> > > -- Sean
