info.archinnov.achilles.type.codec

Interface Codec<FROM,TO>

Type Parameters:

FROM - sourceType

TO - targetType compatible with Cassandra

public interface Codec<FROM,TO>

Define a codec to transform a source type into a target type.
The source type can be any Java type. The target type should be a Java type supported by Cassandra


Example of LongToString codec

 public class LongToString implements Codec<Long,String> {
 @Override
 public Class sourceType() {
 return Long.class;
 }

 @Override
 public Class targetType() {
 return String.class;
 }

 @Override
 public String encode(Long fromJava) throws AchillesTranscodingException {
 return fromJava.toString();
 }

 @Override
 public Long decode(String fromCassandra) throws AchillesTranscodingException {
 return Long.parseLong(fromCassandra);
 }
 }
 

Method Summary

Modifier and Type	Method and Description
FROM	decode(TO fromCassandra)
TO	encode(FROM fromJava)
Class<FROM>	sourceType()
Class<TO>	targetType()

Method Detail

sourceType

Class<FROM> sourceType()

targetType

Class<TO> targetType()

encode

TO encode(FROM fromJava)
   throws AchillesTranscodingException

Throws:

AchillesTranscodingException

decode

FROM decode(TO fromCassandra)
     throws AchillesTranscodingException

Throws:

AchillesTranscodingException