org.ssf4j.avro.json.AvroJsonSerialization Maven / Gradle / Ivy
package org.ssf4j.avro.json;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.avro.Schema;
import org.apache.avro.generic.GenericData;
import org.ssf4j.Serialization;
/**
* Serialization facade that uses Apache avro's JSON encoder
*
* Note that avro can only reliably serialize objects created from
* avro schemas.
* @author robin
*
*/
public class AvroJsonSerialization implements Serialization {
private static Schema schema(Class type) {
Object obj = null;
if(type == boolean.class || type == Boolean.class)
obj = true;
else if(type == char.class || type == Character.class)
obj = 'T';
else if(type == double.class || type == Double.class)
obj = 1d;
else if(type == float.class || type == Float.class)
obj = 1f;
else if(type == int.class || type == Integer.class)
obj = 1;
else if(type == long.class || type == Long.class)
obj = 1L;
else if(type == short.class || type == Short.class)
obj = (short) 1;
try {
if(obj == null && type != null)
obj = type.newInstance();
} catch (Exception e) {
throw new RuntimeException(e);
}
try {
return GenericData.get().induce(obj);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* {@inheritDoc}
*/
@Override
public AvroJsonSerializer newSerializer(OutputStream out, Class type)
throws IOException {
return new AvroJsonSerializer(schema(type), out);
}
/**
* {@inheritDoc}
*/
@Override
public AvroJsonDeserializer newDeserializer(InputStream in, Class type)
throws IOException {
return new AvroJsonDeserializer(schema(type), in, type);
}
}