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SerializeAvro.java
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/
SerializeAvro.java
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package com.politrons.avro;
import org.apache.avro.file.DataFileWriter;
import org.apache.avro.io.DatumWriter;
import org.apache.avro.io.Encoder;
import org.apache.avro.io.EncoderFactory;
import org.apache.avro.specific.SpecificDatumWriter;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
public class SerializeAvro {
public static byte[] avroPersonData;
private static AvroPerson createPerson() {
AvroPerson p1 = new AvroPerson();
p1.setId(1);
p1.setUsername("mrscarter");
p1.setFirstName("Beyonce");
p1.setLastName("Knowles-Carter");
return p1;
}
public static void toFile() {
File avroOutput = new File("avro-person.avro");
try {
DatumWriter<AvroPerson> bdPersonDatumWriter = new SpecificDatumWriter<>(AvroPerson.class);
DataFileWriter<AvroPerson> dataFileWriter = new DataFileWriter<>(bdPersonDatumWriter);
AvroPerson p1 = createPerson();
dataFileWriter.create(p1.getSchema(), avroOutput);
dataFileWriter.append(p1);
dataFileWriter.close();
} catch (IOException e) {
System.out.println("Error writing Avro");
}
}
public static byte[] toByteArray() {
DatumWriter<AvroPerson> employeeWriter = new SpecificDatumWriter<>(AvroPerson.class);
try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
Encoder binaryEncoder = EncoderFactory.get().binaryEncoder(baos, null);
employeeWriter.write(createPerson(), binaryEncoder);
binaryEncoder.flush();
avroPersonData = baos.toByteArray();
} catch (IOException e) {
e.printStackTrace();
}
return avroPersonData;
}
}