package redis.clients.jedis;
import java.io.Closeable;
import java.util.ArrayList;
import java.util.List;
import redis.clients.jedis.exceptions.JedisDataException;
/**
* Transaction is nearly identical to Pipeline, only differences are the multi/discard behaviors
*/
public class Transaction extends MultiKeyPipelineBase implements Closeable {
protected boolean inTransaction = true;
protected Transaction() {
// client will be set later in transaction block
}
public Transaction(final Client client) {
this.client = client;
}
@Override
protected Client getClient(String key) {
return client;
}
@Override
protected Client getClient(byte[] key) {
return client;
}
public void clear() {
if (inTransaction) {
discard();
}
}
public List<Object> exec() {
// Discard QUEUED or ERROR
client.getMany(getPipelinedResponseLength());
client.exec();
inTransaction = false;
List<Object> unformatted = client.getObjectMultiBulkReply();
if (unformatted == null) {
return null;
}
List<Object> formatted = new ArrayList<Object>();
for (Object o : unformatted) {
try {
formatted.add(generateResponse(o).get());
} catch (JedisDataException e) {
formatted.add(e);
}
}
return formatted;
}
public List<Response<?>> execGetResponse() {
// Discard QUEUED or ERROR
client.getMany(getPipelinedResponseLength());
client.exec();
inTransaction = false;
List<Object> unformatted = client.getObjectMultiBulkReply();
if (unformatted == null) {
return null;
}
List<Response<?>> response = new ArrayList<Response<?>>();
for (Object o : unformatted) {
response.add(generateResponse(o));
}
return response;
}
public String discard() {
client.getMany(getPipelinedResponseLength());
client.discard();
inTransaction = false;
clean();
return client.getStatusCodeReply();
}
public void setClient(Client client) {
this.client = client;
}
@Override
public void close() {
clear();
}
}