com.lambdaworks.redis.protocol
Class CommandOutput<K,V,T>

java.lang.Object
  com.lambdaworks.redis.protocol.CommandOutput<K,V,T>

Type Parameters:

T - Output type.

Direct Known Subclasses:

BooleanListOutput, BooleanOutput, ByteArrayOutput, DateOutput, DoubleOutput, IntegerOutput, KeyListOutput, KeyOutput, KeyValueOutput, MapOutput, MultiOutput, NestedMultiOutput, PubSubOutput, ScoredValueListOutput, StatusOutput, StringListOutput, ValueListOutput, ValueOutput, ValueSetOutput

public abstract class CommandOutput<K,V,T>
extends Object

Abstract representation of the output of a redis command.

Author:

Will Glozer

Field Summary

protected RedisCodec<K,V>	codec
protected String	error
protected T	output

Constructor Summary

CommandOutput(RedisCodec<K,V> codec, T output)
Initialize a new instance that encodes and decodes keys and values using the supplied codec.

Method Summary

void	complete(int depth) Mark the command output complete.
protected String	decodeAscii(ByteBuffer bytes)
T	get() Get the command output.
String	getError() Get the error that occurred.
boolean	hasError() Check if the command resulted in an error.
void	set(ByteBuffer bytes) Set the command output to a sequence of bytes, or null.
void	set(long integer) Set the command output to a 64-bit signed integer.
void	setError(ByteBuffer error) Set command output to an error message from the server.
void	setError(String error) Set command output to an error message from the client.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

codec

protected RedisCodec<K,V> codec

output

protected T output

error

protected String error

Constructor Detail

CommandOutput

public CommandOutput(RedisCodec<K,V> codec,
                     T output)

Initialize a new instance that encodes and decodes keys and values using the supplied codec.

Parameters:

codec - Codec used to encode/decode keys and values.

output - Initial value of output.

Method Detail

get

public T get()

Get the command output.

Returns:

The command output.

set

public void set(ByteBuffer bytes)

Set the command output to a sequence of bytes, or null. Concrete CommandOutput implementations must override this method unless they only receive an integer value which cannot be null.

Parameters:

bytes - The command output, or null.

set

public void set(long integer)

Set the command output to a 64-bit signed integer. Concrete CommandOutput implementations must override this method unless they only receive a byte array value.

Parameters:

integer - The command output.

setError

public void setError(ByteBuffer error)

Set command output to an error message from the server.

Parameters:

error - Error message.

setError

public void setError(String error)

Set command output to an error message from the client.

Parameters:

error - Error message.

hasError

public boolean hasError()

Check if the command resulted in an error.

Returns:

true if command resulted in an error.

getError

public String getError()

Get the error that occurred.

Returns:

The error.

complete

public void complete(int depth)

Mark the command output complete.

Parameters:

depth - Remaining depth of output queue.

decodeAscii

protected String decodeAscii(ByteBuffer bytes)