Hello Mika/Doug, I am thinking to write byteData as it is in one of my columns in Cassandra Column Family so is this right? I have figured it out how can I store it in Cassandra already.. I just wanted to confirm whether I can write byteData as it is or not?
*Raihan Jamal* On Thu, Sep 19, 2013 at 10:45 AM, raihan26 <[email protected]> wrote: > Thanks Mika. That worked fine > > GenericDatumWriter<GenericRecord> writer = new > GenericDatumWriter<GenericRecord>(schema); > ByteArrayOutputStream os = new ByteArrayOutputStream(); > Encoder e = EncoderFactory.get().binaryEncoder(os, null); > writer.write(record, e); > e.flush(); > byte[] byteData = os.toByteArray(); > os.close(); > > > That means, I can write byteData as the value for one of my columns. > Correct? I will figure out whether we can store binary blobs or not in > Cassandra. But just to make sure, I need to store byteData as it is as the > value for one of my columns.. Right? > > And also how can I deserialize the above data after I retrieve from > Cassandra for that particular column? A simple example will make me > understand this as well. Thanks. > > > > > > > > > *Raihan Jamal* > > > On Thu, Sep 19, 2013 at 1:53 AM, Mika Ristimaki [via Apache Avro] <[hidden > email] <http://user/SendEmail.jtp?type=node&node=4028224&i=0>> wrote: > >> Hi Raihan, >> >> You can try somthing like this, see below. >> >> On Sep 19, 2013, at 4:04 AM, Raihan Jamal <[hidden >> email]<http://user/SendEmail.jtp?type=node&node=4028221&i=0>> >> wrote: >> >> > I am trying to use Apache Avro to serialize one of our Attributes data >> and I want to use binary encoding version for that not the JSON version. In >> this case, I don't want to serialize to disk or some avro data files. I am >> planning to write Avro binary encoded-data in Cassandra column family. >> > >> > Below is the code so far I have- I am not sure how to start encoding >> into binary version. >> > >> > Schema schema = new >> Parser().parse((AvroExample.class.getResourceAsStream("/user.avsc"))); >> > >> > GenericRecord record = new GenericData.Record(schema); >> > record.put("vbs", "99,E,0"); >> > record.put("eby", "0,E,,,,,,,15"); >> > record.put("ste", "77;2,0;1,16;3"); >> > >> > >> > // what I am supposed to do here to serialize into binary encoded >> version of Avro? >> > >> GenericDatumWriter<GenericRecord> writer = new >> GenericDatumWriter<GenericRecord>(schema); >> ByteArrayOutputStream os = new ByteArrayOutputStream(); >> Encoder e = EncoderFactory.get().binaryEncoder(os, null); >> writer.write(record, e); >> e.flush(); >> byte[] byteData = os.toByteArray(); >> os.close(); >> > >> > // then write to Cassandra here. >> > >> >> I don't know anything about cassandra, but I'm pretty sure you can write >> binary blobs there. >> >> -Mika >> >> > >> > Can anyone provide a simple example basis on my code how to do that? >> And then I can use that to write into Cassandra column family. >> > >> > Thanks. >> > >> > >> > >> > >> > Raihan Jamal >> >> >> >> ------------------------------ >> If you reply to this email, your message will be added to the >> discussion below: >> >> http://apache-avro.679487.n3.nabble.com/How-to-use-Apache-Avro-to-encode-the-data-in-avro-binary-encoded-form-tp4028217p4028221.html >> To start a new topic under Avro - Users, email [hidden >> email]<http://user/SendEmail.jtp?type=node&node=4028224&i=1> >> To unsubscribe from Apache Avro, click here. >> NAML<http://apache-avro.679487.n3.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> >> > > > ------------------------------ > View this message in context: Re: How to use Apache Avro to encode the > data in avro binary encoded > form?<http://apache-avro.679487.n3.nabble.com/How-to-use-Apache-Avro-to-encode-the-data-in-avro-binary-encoded-form-tp4028217p4028224.html> > Sent from the Avro - Users mailing list > archive<http://apache-avro.679487.n3.nabble.com/Avro-Users-f679479.html>at > Nabble.com. >
