Package org.jredis.ri.alphazero

Source Code of org.jredis.ri.alphazero.JRedisFutureSupport$FutureInfo

/*
*   Copyright 2009 Joubin Houshyar
*
*   Licensed under the Apache License, Version 2.0 (the "License");
*   you may not use this file except in compliance with the License.
*   You may obtain a copy of the License at
*   
*   http://www.apache.org/licenses/LICENSE-2.0
*   
*   Unless required by applicable law or agreed to in writing, software
*   distributed under the License is distributed on an "AS IS" BASIS,
*   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*   See the License for the specific language governing permissions and
*   limitations under the License.
*/

package org.jredis.ri.alphazero;

import java.io.Serializable;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;
import java.util.Map.Entry;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import org.jredis.ClientRuntimeException;
import org.jredis.JRedisFuture;
import org.jredis.KeyValueSet;
import org.jredis.ProviderException;
import org.jredis.RedisException;
import org.jredis.RedisType;
import org.jredis.Sort;
import org.jredis.connector.Connection;
import org.jredis.protocol.BulkResponse;
import org.jredis.protocol.Command;
import org.jredis.protocol.MultiBulkResponse;
import org.jredis.protocol.Response;
import org.jredis.protocol.ResponseStatus;
import org.jredis.protocol.ValueResponse;
import org.jredis.ri.alphazero.semantics.DefaultKeyCodec;
import org.jredis.ri.alphazero.support.Convert;
import org.jredis.ri.alphazero.support.DefaultCodec;
import org.jredis.ri.alphazero.support.SortSupport;
import org.jredis.semantics.KeyCodec;

/**
*
* [TODO: document me!]
*
* @author  Joubin Houshyar (alphazero@sensesay.net)
* @version alpha.0, Apr 10, 2009
* @since   alpha.0
*
*/
public abstract class JRedisFutureSupport implements JRedisFuture {
 
  // ------------------------------------------------------------------------
  // Properties
  // ------------------------------------------------------------------------

  // ------------------------------------------------------------------------
  // Constructors
  // ------------------------------------------------------------------------
 
  // ------------------------------------------------------------------------
  // Extension point(s)
  /*
   * This class provides the convenience of a uniform implementation wide mapping
   * of JRedis api semantics to the native protocol level semantics of byte[]s.
   *
   * Extensions can use the provided extension points to provide or delegate the
   * servicing of request calls. 
   */
  // ------------------------------------------------------------------------
 
  /**
   * This method mimics the eponymous {@link Connection#queueRequest(Command, byte[]...)}
   * which defines the blocking api semantics of Synchronous connections.  The extending class
   * can either directly (a) implement the protocol requirements, or, (b) delegate to a
   * {@link Connection} instance, or, (c) utilize a pool of {@link Connection}s. 
   *
   * @param cmd
   * @param args
   * @return
   * @throws ClientRuntimeException
   * @throws ProviderException
   */
  abstract protected  Future<Response> queueRequest (Command cmd, byte[]...args) throws ClientRuntimeException, ProviderException;
  // ------------------------------------------------------------------------
  // INTERFACE
  // ================================================================ Redis
  /*
   * Support of all the JRedisFuture interface methods.
   *
   * This class uses the UTF-8 character set for all conversions due to its
   * use of the Convert and Codec support classes.
   *
   * All calls are forwarded to an abstract queueRequest method that the
   * extending classes are expected to implement. 
   */
  // ------------------------------------------------------------------------


//  @Override
  public FutureStatus bgsave() {
    return new FutureStatus(this.queueRequest(Command.BGSAVE));
  }
//  @Override
  public FutureStatus ping() {
    return new FutureStatus(this.queueRequest(Command.PING));
  }

//  @Override
  public FutureStatus flushall() {
    return new FutureStatus(this.queueRequest(Command.FLUSHALL));
  }
//  @Override
  public FutureStatus flushdb() {
    return new FutureStatus(this.queueRequest(Command.FLUSHDB));
  }
////  @Override
//  public FutureStatus select(int index) {
//    this.queueRequest(Command.SELECT, Convert.toBytes(index));
//    return this;
//  }

  public Future<ResponseStatus>  slaveof(String host, int port) {
    byte[] hostbytes = null;
    if((hostbytes = getKeyBytes(host)) == null)
      throw new IllegalArgumentException ("invalid host => ["+host+"]");

    byte[] portbytes = null;
    if((portbytes = Convert.toBytes(port)) == null)
      throw new IllegalArgumentException ("invalid port => ["+port+"]");

    return new FutureStatus(this.queueRequest(Command.SLAVEOF, hostbytes, portbytes));
  }
  public Future<ResponseStatus>  slaveofnone() {
    return new FutureStatus(this.queueRequest(Command.SLAVEOF, "no".getBytes(), "one".getBytes()));
  }
 
//  @Override
  public FutureStatus rename(String oldkey, String newkey) {
    byte[] oldkeydata = null;
    if((oldkeydata = getKeyBytes(oldkey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+oldkey+"]");

    byte[] newkeydata = null;
    if((newkeydata = getKeyBytes(newkey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+newkey+"]");

    return new FutureStatus(this.queueRequest(Command.RENAME, oldkeydata, newkeydata));
  }
 
//  @Override
  public Future<Boolean> renamenx(String oldkey, String newkey){
    byte[] oldkeydata = null;
    if((oldkeydata = getKeyBytes(oldkey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+oldkey+"]");

    byte[] newkeydata = null;
    if((newkeydata = getKeyBytes(newkey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+newkey+"]");

    Future<Response> futureResponse = this.queueRequest(Command.RENAMENX, oldkeydata, newkeydata);
    return new FutureBoolean(futureResponse);
  }
  public FutureStatus rpush(String key, byte[] value)  {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");
   
    if(value == null)
      throw new IllegalArgumentException ("null value");
   
    return new FutureStatus(this.queueRequest(Command.RPUSH, keybytes, value));
  }
 
//  @Override
  public FutureByteArray rpoplpush (String srcList, String destList)  {
    byte[] srckeybytes = null;
    if((srckeybytes = getKeyBytes(srcList)) == null)
      throw new IllegalArgumentException ("invalid src key => ["+srcList+"]");
    byte[] destkeybytes = null;
    if((destkeybytes = getKeyBytes(destList)) == null)
      throw new IllegalArgumentException ("invalid dest key => ["+destList+"]");
   
    Future<Response> futureResponse = this.queueRequest(Command.RPOPLPUSH, srckeybytes, destkeybytes);
    return new FutureByteArray(futureResponse);
  }
//  @Override
  public FutureStatus rpush(String key, String value) {
//    rpush(key, DefaultCodec.encode(value));
    return rpush(key, DefaultCodec.encode(value));
  }
//  @Override
  public FutureStatus rpush(String key, Number value) {
    return rpush(key, String.valueOf(value).getBytes());
  }
//  @Override
  public <T extends Serializable> FutureStatus rpush (String key, T value)
  {
    return rpush(key, DefaultCodec.encode(value));
  }

//  @Override
  public Future<Boolean> sadd(String key, byte[] member)
  {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.SADD, keybytes, member);
    return new FutureBoolean(futureResponse);
  }
//  @Override
  public Future<Boolean> sadd (String key, String value) {
    return sadd (key, DefaultCodec.encode(value));
  }
//  @Override
  public Future<Boolean> sadd (String key, Number value) {
    return sadd (key, String.valueOf(value).getBytes());
  }
//  @Override
  public <T extends Serializable> Future<Boolean> sadd (String key, T value)
  {
    return sadd (key, DefaultCodec.encode(value));
  }

//  @Override
  public Future<Boolean> zadd(String key, double score, byte[] member)
  {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.ZADD, keybytes,  Convert.toBytes(score), member);
    return new FutureBoolean(futureResponse);
  }
//  @Override
  public Future<Boolean> zadd (String key, double score, String value) {
    return zadd (key, score, DefaultCodec.encode(value));
  }
//  @Override
  public Future<Boolean> zadd (String key, double score, Number value) {
    return zadd (key, score, String.valueOf(value).getBytes());
  }
//  @Override
  public <T extends Serializable> Future<Boolean> zadd (String key, double score, T value)
  {
    return zadd (key, score, DefaultCodec.encode(value));
  }

//  @Override
  public Future<Double> zincrby(String key, double score, byte[] member)
  {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.ZINCRBY, keybytes,  Convert.toBytes(score), member);
    return new FutureDouble(futureResponse);
  }
//  @Override
  public Future<Double> zincrby (String key, double score, String value) {
    return zincrby (key, score, DefaultCodec.encode(value));
  }
//  @Override
  public Future<Double> zincrby (String key, double score, Number value) {
    return zincrby (key, score, String.valueOf(value).getBytes());
  }
//  @Override
  public <T extends Serializable> Future<Double> zincrby (String key, double score, T value)
  {
    return zincrby (key, score, DefaultCodec.encode(value));
  }

//  @Override
  public FutureStatus save()
  {
    return new FutureStatus(this.queueRequest(Command.SAVE));
  }
 
  // -------- set

//  @Override
  public FutureStatus set(String key, byte[] value) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    return new FutureStatus(this.queueRequest(Command.SET, keybytes, value));
  }
//  @Override
  public FutureStatus set(String key, String value) {
    return set(key, DefaultCodec.encode(value));
  }
//  @Override
  public FutureStatus set(String key, Number value) {
    return set(key, String.valueOf(value).getBytes());
  }
//  @Override
  public <T extends Serializable> FutureStatus set (String key, T value)
  {
    return set(key, DefaultCodec.encode(value));
  }
 
//  @Override
  public Future<byte[]> getset(String key, byte[] value) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.GETSET, keybytes, value);
    return new FutureByteArray(futureResponse);
  }
//  @Override
  public Future<byte[]> getset(String key, String value) {
    return getset(key, DefaultCodec.encode(value));
  }
//  @Override
  public Future<byte[]> getset(String key, Number value) {
    return getset(key, String.valueOf(value).getBytes());
  }
//  @Override
  public <T extends Serializable>
  Future<byte[]> getset (String key, T value)
  {
    return getset(key, DefaultCodec.encode(value));
  }
 
//  @Override
  public Future<Boolean> setnx(String key, byte[] value){
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.SETNX, keybytes, value);
    return new FutureBoolean(futureResponse);
  }
//  @Override
  public Future<Boolean> setnx(String key, String value) {
    return setnx(key, DefaultCodec.encode(value));
  }
//  @Override
  public Future<Boolean> setnx(String key, Number value) {
    return setnx(key, String.valueOf(value).getBytes());
  }
//  @Override
  public <T extends Serializable> Future<Boolean> setnx (String key, T value) {
    return setnx(key, DefaultCodec.encode(value));
  }

//  @Override
  public Future<Boolean> sismember(String key, byte[] member) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.SISMEMBER, keybytes, member);
    return new FutureBoolean(futureResponse);
  }

//  @Override
  public Future<Boolean> sismember(String key, String value) {
    return sismember(key, DefaultCodec.encode(value));
  }

//  @Override
  public Future<Boolean> sismember(String key, Number numberValue) {
    return sismember (key, String.valueOf(numberValue).getBytes());
  }

//  @Override
  public <T extends Serializable> Future<Boolean> sismember(String key, T object) {
    return sismember(key, DefaultCodec.encode(object));
  }

  public Future<Boolean> smove (String srcKey, String destKey, byte[] member) {
    byte[] srcKeyBytes = null;
    if((srcKeyBytes = getKeyBytes(srcKey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+srcKey+"]");

    byte[] destKeyBytes = null;
    if((destKeyBytes = getKeyBytes(destKey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+destKey+"]");

    Future<Response> futureResponse = this.queueRequest(Command.SMOVE, srcKeyBytes, destKeyBytes, member);
    return new FutureBoolean(futureResponse);
  }
  public Future<Boolean> smove (String srcKey, String destKey, String stringValue) {
    return smove (srcKey, destKey, DefaultCodec.encode(stringValue));
  }
  public Future<Boolean> smove (String srcKey, String destKey, Number numberValue) {
    return smove (srcKey, destKey, String.valueOf(numberValue).getBytes());
  }
  public <T extends Serializable>
       Future<Boolean> smove (String srcKey, String destKey, T object) {
    return smove (srcKey, destKey, DefaultCodec.encode(object));
  }
      
 
 
  /* ------------------------------- commands returning int value --------- */

//  @Override
  public Future<Long> incr(String key) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.INCR, keybytes);
    return new FutureLong (futureResponse);
  }

//  @Override
  public Future<Long> incrby(String key, int delta) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.INCRBY, keybytes, Convert.toBytes(delta));
    return new FutureLong (futureResponse);
  }

//  @Override
  public Future<Long> decr(String key) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.DECR, keybytes);
    return new FutureLong (futureResponse);
  }

//  @Override
  public Future<Long> decrby(String key, int delta) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.DECRBY, keybytes, Convert.toBytes(delta));
    return new FutureLong (futureResponse);
  }

//  @Override
  public Future<Long> llen(String key) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.LLEN, keybytes);
    return new FutureLong (futureResponse);
  }

//  @Override
  public Future<Long> scard(String key) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.SCARD, keybytes);
    return new FutureLong (futureResponse);
  }
 
//  @Override
  public Future<Long> zcard(String key) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.ZCARD, keybytes);
    return new FutureLong (futureResponse);
  }
 
  public Future<byte[]> srandmember (String key) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.SRANDMEMBER, keybytes);
    return new FutureByteArray (futureResponse);
  }

  /* ------------------------------- commands returning long value --------- */

//  @Override
  public Future<Long> dbsize() {
    Future<Response> futureResponse = this.queueRequest(Command.DBSIZE);
    return new FutureLong (futureResponse);
  }
//  @Override
  public Future<Long> lastsave() {
    Future<Response> futureResponse = this.queueRequest(Command.LASTSAVE);
    return new FutureLong (futureResponse);
  }

  /* ------------------------------- commands returning byte[] --------- */

//  @Override
  public Future<byte[]> get(String key) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.GET, keybytes);
    return new FutureByteArray(futureResponse);
  }

//  @Override
  public Future<byte[]> lindex(String key, long index) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.LINDEX, keybytes, Convert.toBytes(index));
    return new FutureByteArray(futureResponse);
  }
//  @Override
  public Future<byte[]> lpop(String key) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.LPOP, keybytes);
    return new FutureByteArray(futureResponse);
  }

//  @Override
  public Future<byte[]> rpop(String key) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.RPOP, keybytes);
    return new FutureByteArray(futureResponse);
  }


  /* ------------------------------- commands returning String--------- */

//  @Override
  public Future<String> randomkey() {
    Future<Response> futureResponse = this.queueRequest(Command.RANDOMKEY);
    return new FutureString(futureResponse);
  }
//  @Override
  public Future<RedisType> type(String key) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    return new FutureRedisType(this.queueRequest(Command.TYPE, keybytes));
  }

  /* ------------------------------- commands returning Maps --------- */

//  @Override
  public Future<Map<String, String>> info() {
    return new FutureInfo(this.queueRequest(Command.INFO));
  }

  /* ------------------------------- commands returning Lists --------- */

//  @Override
  public Future<List<byte[]>> mget(String key, String... moreKeys) {

    byte[] keydata = null;
    if((keydata = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[][] keybytes = new byte[1+moreKeys.length][];
    int i=0; keybytes[i++] = keydata;
    for(String k : moreKeys) {
      if((keydata = getKeyBytes(k)) == null)
        throw new IllegalArgumentException ("invalid key => ["+k+"]");
      keybytes[i++] = keydata;
    }
    return new FutureByteArrayList(this.queueRequest(Command.MGET, keybytes));
  }
 
  /* MSETs */
  private FutureStatus mset(byte[][] mappings){
    Future<Response> futureResponse = this.queueRequest(Command.MSET, mappings);
    return new FutureStatus(futureResponse);
  }
  public FutureStatus mset(Map<String, byte[]> keyValueMap){
    KeyCodec codec = DefaultKeyCodec.provider();
    byte[][] mappings = new byte[keyValueMap.size()*2][];
    int i = 0;
    for (Entry<String, byte[]> e : keyValueMap.entrySet()){
      mappings[i++] = codec.encode(e.getKey());
      mappings[i++] = e.getValue();
    }
    return mset(mappings);
  }
 
  public FutureStatus mset(KeyValueSet.ByteArrays keyValueMap){
    return mset(keyValueMap.getMappings());
  }
  public FutureStatus mset(KeyValueSet.Strings keyValueMap){
    return mset(keyValueMap.getMappings());
  }

  public FutureStatus mset(KeyValueSet.Numbers keyValueMap){
    return mset(keyValueMap.getMappings());
  }

  public <T extends Serializable> FutureStatus mset(KeyValueSet.Objects<T> keyValueMap){
    return mset(keyValueMap.getMappings());
  }

  /* MSETNXs */
  private Future<Boolean> msetnx(byte[][] mappings){
    Future<Response> futureResponse = this.queueRequest(Command.MSETNX, mappings);
    return new FutureBoolean(futureResponse);
  }
  public Future<Boolean> msetnx(Map<String, byte[]> keyValueMap){
    KeyCodec codec = DefaultKeyCodec.provider();
    byte[][] mappings = new byte[keyValueMap.size()*2][];
    int i = 0;
    for (Entry<String, byte[]> e : keyValueMap.entrySet()){
      mappings[i++] = codec.encode(e.getKey());
      mappings[i++] = e.getValue();
    }
    return msetnx(mappings);
  }
 
  public Future<Boolean> msetnx(KeyValueSet.ByteArrays keyValueMap){
    return msetnx(keyValueMap.getMappings());
  }
  public Future<Boolean> msetnx(KeyValueSet.Strings keyValueMap){
    return msetnx(keyValueMap.getMappings());
  }

  public Future<Boolean> msetnx(KeyValueSet.Numbers keyValueMap){
    return msetnx(keyValueMap.getMappings());
  }

  public <T extends Serializable> Future<Boolean> msetnx(KeyValueSet.Objects<T> keyValueMap){
    return msetnx(keyValueMap.getMappings());
  }


//  @Override
  public Future<List<byte[]>> smembers(String key) {
    byte[] keydata = null;
    if((keydata = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("null key.");

    return new FutureByteArrayList(this.queueRequest(Command.SMEMBERS, keydata));
  }
//  @Override
  public Future<List<String>> keys() {
    return this.keys("*");
  }

//  @Override
  public Future<List<String>> keys(String pattern) {
    byte[] keydata = null;
    if((keydata = getKeyBytes(pattern)) == null)
      throw new IllegalArgumentException ("null key.");

    Future<Response> futureResponse = this.queueRequest(Command.KEYS, keydata);
    return new FutureKeyList(futureResponse);
  }

//  @Override
  public Future<List<byte[]>> lrange(String key, long from, long to) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] fromBytes = Convert.toBytes(from);
    byte[] toBytes = Convert.toBytes(to);

    return new FutureByteArrayList(this.queueRequest(Command.LRANGE, keybytes, fromBytes, toBytes));
  }

//  @Override
  public Future<List<byte[]>> zrange(String key, long from, long to) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] fromBytes = Convert.toBytes(from);
    byte[] toBytes = Convert.toBytes(to);

    return new FutureByteArrayList(this.queueRequest(Command.ZRANGE, keybytes, fromBytes, toBytes));
  }

//  @Override
  public Future<List<byte[]>> zrangebyscore(String key, double minScore, double maxScore) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] minScoreBytes = Convert.toBytes(minScore);
    byte[] maxScoreBytes = Convert.toBytes(maxScore);

    return new FutureByteArrayList(this.queueRequest(Command.ZRANGEBYSCORE, keybytes, minScoreBytes, maxScoreBytes));
  }

//  @Override
  public Future<List<byte[]>> zrevrange(String key, long from, long to) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] fromBytes = Convert.toBytes(from);
    byte[] toBytes = Convert.toBytes(to);

    return new FutureByteArrayList(this.queueRequest(Command.ZREVRANGE, keybytes, fromBytes, toBytes));
  }

  // TODO: NOTIMPLEMENTED:
//  @Override
  public Sort sort(final String key) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    final JRedisFutureSupport client = this;
    Sort sortQuery = new SortSupport (key, keybytes) {
    //  @Override
      protected Future<List<byte[]>> execAsynchSort(byte[] keyBytes, byte[] sortSpecBytes) {
        return new FutureByteArrayList(client.queueRequest(Command.SORT, keyBytes, sortSpecBytes));
      }
      protected List<byte[]> execSort(byte[] keyBytes, byte[] sortSpecBytes) {
        throw new IllegalStateException("JRedisFuture does not support synchronous sort.");
      }
    };
    return sortQuery;
  }

  /* ------------------------------- commands that don't get a response --------- */

//  @Override
  public FutureStatus quit()  {
    return new FutureStatus(this.queueRequest(Command.QUIT));
  }
//  @Override
  public Future<List<byte[]>> sinter(String set1, String... sets) {
    byte[] keydata = null;
    if((keydata = getKeyBytes(set1)) == null)
      throw new IllegalArgumentException ("invalid key => ["+set1+"]");

    byte[][] keybytes = new byte[1+sets.length][];
    int i=0; keybytes[i++] = keydata;
    for(String k : sets) {
      if((keydata = getKeyBytes(k)) == null)
        throw new IllegalArgumentException ("invalid key => ["+k+"]");
      keybytes[i++] = keydata;
    }
   
    return new FutureByteArrayList(this.queueRequest(Command.SINTER, keybytes));
  }

//  @Override
  public Future<List<byte[]>> sunion(String set1, String... sets) {
    byte[] keydata = null;
    if((keydata = getKeyBytes(set1)) == null)
      throw new IllegalArgumentException ("invalid key => ["+set1+"]");

    byte[][] keybytes = new byte[1+sets.length][];
    int i=0; keybytes[i++] = keydata;
    for(String k : sets) {
      if((keydata = getKeyBytes(k)) == null)
        throw new IllegalArgumentException ("invalid key => ["+k+"]");
      keybytes[i++] = keydata;
    }
   
    return new FutureByteArrayList(this.queueRequest(Command.SUNION, keybytes));
  }

//  @Override
  public Future<List<byte[]>> sdiff(String set1, String... sets) {
    byte[] keydata = null;
    if((keydata = getKeyBytes(set1)) == null)
      throw new IllegalArgumentException ("invalid key => ["+set1+"]");

    byte[][] keybytes = new byte[1+sets.length][];
    int i=0; keybytes[i++] = keydata;
    for(String k : sets) {
      if((keydata = getKeyBytes(k)) == null)
        throw new IllegalArgumentException ("invalid key => ["+k+"]");
      keybytes[i++] = keydata;
    }
    return new FutureByteArrayList(this.queueRequest(Command.SDIFF, keybytes));
  }

//  @Override
  public FutureStatus sinterstore(String dest, String... sets) {
    byte[] keydata = null;
    if((keydata = getKeyBytes(dest)) == null)
      throw new IllegalArgumentException ("invalid key => ["+dest+"]");

    byte[][] setbytes = new byte[1+sets.length][];
    int i=0;
    setbytes[i++] = keydata;
    byte[] setdata =null;
    for(String k : sets) {
      if((setdata = getKeyBytes(k)) == null)
        throw new IllegalArgumentException ("invalid key => ["+k+"]");
      setbytes[i++] = setdata;
    }
   
    return new FutureStatus(this.queueRequest(Command.SINTERSTORE, setbytes));
  }

//  @Override
  public FutureStatus sunionstore(String dest, String... sets) {
    byte[] keydata = null;
    if((keydata = getKeyBytes(dest)) == null)
      throw new IllegalArgumentException ("invalid key => ["+dest+"]");

    byte[][] setbytes = new byte[1+sets.length][];
    int i=0;
    setbytes[i++] = keydata;
    byte[] setdata =null;
    for(String k : sets) {
      if((setdata = getKeyBytes(k)) == null)
        throw new IllegalArgumentException ("invalid key => ["+k+"]");
      setbytes[i++] = setdata;
    }
   
    return new FutureStatus(this.queueRequest(Command.SUNIONSTORE, setbytes));
  }

//  @Override
  public FutureStatus sdiffstore(String dest, String... sets) {
    byte[] keydata = null;
    if((keydata = getKeyBytes(dest)) == null)
      throw new IllegalArgumentException ("invalid key => ["+dest+"]");

    byte[][] setbytes = new byte[1+sets.length][];
    int i=0;
    setbytes[i++] = keydata;
    byte[] setdata =null;
    for(String k : sets) {
      if((setdata = getKeyBytes(k)) == null)
        throw new IllegalArgumentException ("invalid key => ["+k+"]");
      setbytes[i++] = setdata;
    }
   
    return new FutureStatus(this.queueRequest(Command.SDIFFSTORE, setbytes));
  }

//  @Override
  public Future<Boolean> del(String key) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.DEL, keybytes);
    return new FutureBoolean(futureResponse);
  }


//  @Override
  public Future<Boolean> exists(String key) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.EXISTS, keybytes);
    return new FutureBoolean(futureResponse);
  }


//  @Override
  public FutureStatus lpush(String key, byte[] value) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");
   
    if(value == null)
      throw new IllegalArgumentException ("null value");
   
   
    return new FutureStatus(this.queueRequest(Command.LPUSH, keybytes, value));
  }
//  @Override
  public FutureStatus lpush(String key, String value) {
    return lpush(key, DefaultCodec.encode(value));
  }
//  @Override
  public FutureStatus lpush(String key, Number value) {
    return lpush(key, String.valueOf(value).getBytes());
  }
//  @Override
  public <T extends Serializable> FutureStatus lpush (String key, T value)
  {
    return lpush(key, DefaultCodec.encode(value));
  }
 


//  @Override
  public Future<Long> lrem(String key, byte[] value, int count) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] countBytes = Convert.toBytes(count);

    Future<Response> futureResponse = this.queueRequest(Command.LREM, keybytes, value, countBytes);
    return new FutureLong(futureResponse);
  }
//  @Override
  public Future<Long> lrem (String listKey, String value, int count){
    return lrem (listKey, DefaultCodec.encode(value), count);
  }
//  @Override
  public Future<Long> lrem (String listKey, Number numberValue, int count) {
    return lrem (listKey, String.valueOf(numberValue).getBytes(), count);
  }
//  @Override
  public <T extends Serializable>
  Future<Long> lrem (String listKey, T object, int count){
    return lrem (listKey, DefaultCodec.encode(object), count);
  }


//  @Override
  public FutureStatus lset(String key, long index, byte[] value) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] indexBytes = Convert.toBytes(index);
    return new FutureStatus(this.queueRequest(Command.LSET, keybytes, indexBytes, value));
  }
//  @Override
  public FutureStatus lset (String key, long index, String value) {
    return lset (key, index, DefaultCodec.encode(value));
  }
//  @Override
  public FutureStatus lset (String key, long index, Number numberValue){
    return lset (key, index, String.valueOf(numberValue).getBytes());
  }
//  @Override
  public <T extends Serializable> FutureStatus lset (String key, long index, T object){
    return lset (key, index, DefaultCodec.encode(object));
  }

//  @Override
  public Future<Boolean> move(String key, int dbIndex) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");
   
    Future<Response> futureResponse = this.queueRequest(Command.MOVE, keybytes, Convert.toBytes(dbIndex));
    return new FutureBoolean(futureResponse);
  }


//  @Override
  public Future<Boolean> srem(String key, byte[] member) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.SREM, keybytes, member);
    return new FutureBoolean(futureResponse);
  }
//  @Override
  public Future<Boolean> srem (String key, String value) {
    return srem (key, DefaultCodec.encode(value));
  }
//  @Override
  public Future<Boolean> srem (String key, Number value) {
    return srem (key, String.valueOf(value).getBytes());
  }
//  @Override
  public <T extends Serializable> Future<Boolean> srem (String key, T value)
  {
    return srem (key, DefaultCodec.encode(value));
  }

//  @Override
  public Future<Boolean> zrem(String key, byte[] member) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.ZREM, keybytes, member);
    return new FutureBoolean(futureResponse);
  }
//  @Override
  public Future<Boolean> zrem (String key, String value) {
    return zrem (key, DefaultCodec.encode(value));
  }
//  @Override
  public Future<Boolean> zrem (String key, Number value) {
    return zrem (key, String.valueOf(value).getBytes());
  }
//  @Override
  public <T extends Serializable> Future<Boolean> zrem (String key, T value)
  {
    return zrem (key, DefaultCodec.encode(value));
  }


//  @Override
  public Future<Double> zscore(String key, byte[] member) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.ZSCORE, keybytes, member);
    return new FutureDouble(futureResponse);
  }
//  @Override
  public Future<Double> zscore (String key, String value) {
    return zscore (key, DefaultCodec.encode(value));
  }
//  @Override
  public Future<Double> zscore (String key, Number value) {
    return zscore (key, String.valueOf(value).getBytes());
  }
//  @Override
  public <T extends Serializable> Future<Double> zscore (String key, T value)
  {
    return zscore (key, DefaultCodec.encode(value));
  }


//  @Override
  public FutureStatus ltrim(String key, long keepFrom, long keepTo) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] fromBytes = Convert.toBytes(keepFrom);
    byte[] toBytes = Convert.toBytes(keepTo);
    return new FutureStatus(this.queueRequest(Command.LTRIM, keybytes, fromBytes, toBytes));
  }

//  @Override
  public Future<Boolean> expire(String key, int ttlseconds) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] ttlbytes = Convert.toBytes(ttlseconds);
   
    Future<Response> futureResponse = this.queueRequest(Command.EXPIRE, keybytes, ttlbytes);
    return new FutureBoolean(futureResponse);
  }

//  @Override
  public Future<Long> ttl (String key) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Future<Response> futureResponse = this.queueRequest(Command.TTL, keybytes);
    return new FutureLong(futureResponse);
  }

  // TODO: integrate using KeyCodec and a CodecManager at client spec and init time.
  // TODO: (implied) ClientSpec (impls. ConnectionSpec)
  // this isn't cooked yet -- lets think more about the implications...
  //
  static final private Map<String, byte[]>  keyByteCache = new ConcurrentHashMap<String, byte[]>();
  public static final boolean  CacheKeys  = false;
 
  private byte[] getKeyBytes(String key) throws IllegalArgumentException {
    if(null == key) throw new IllegalArgumentException("key is null");
    byte[] bytes = null;
    if(JRedisSupport.CacheKeys == true)
      bytes = keyByteCache.get(key);
    if(null == bytes) {
//      bytes = key.getBytes(DefaultCodec.SUPPORTED_CHARSET); // java 1.6
      try {
              bytes = key.getBytes(DefaultCodec.SUPPORTED_CHARSET_NAME);
            }
            catch (UnsupportedEncodingException e) {
              e.printStackTrace();
            }
      for(byte b : bytes) {
        if (b == (byte)32 || b == (byte)10 || b == (byte)13)
          throw new IllegalArgumentException ("Key includes invalid byte value: " + (int)b);
      }
     
      if(JRedisSupport.CacheKeys == true)
        keyByteCache.put(key, bytes);
    }
    return bytes;
  }

  // ------------------------------------------------------------------------
  // Inner classes : support for Future<x> return types
  // ------------------------------------------------------------------------
 
  public static class FutureResultBase {
    final protected Future<Response> pendingRequest;
    protected FutureResultBase(Future<Response> pendingRequest){ this.pendingRequest = pendingRequest;}
    public boolean cancel (boolean mayInterruptIfRunning) {
          return pendingRequest.cancel(mayInterruptIfRunning);
        }
        public boolean isCancelled () {
          return pendingRequest.isCancelled();
        }
        public boolean isDone () {
          return pendingRequest.isDone();
        }
  }
  public static class FutureStatus extends FutureResultBase implements Future<ResponseStatus>  {

        protected FutureStatus (Future<Response> pendingRequest) { super(pendingRequest); }
        public ResponseStatus get () throws InterruptedException, ExecutionException {
//          StatusResponse statusResponse = (StatusResponse) pendingRequest.get();  // HANDLE VIRTUALS HERE
//          return statusResponse.getStatus();
          return pendingRequest.get().getStatus();
        }

        public ResponseStatus get (long timeout, TimeUnit unit)
          throws InterruptedException, ExecutionException, TimeoutException
        {
//          StatusResponse statusResponse = (StatusResponse) pendingRequest.get(timeout, unit);
//          return statusResponse.getStatus();
          return pendingRequest.get(timeout, unit).getStatus();
        }
       
  }
  public static class FutureBoolean extends FutureResultBase implements Future<Boolean>{

        protected FutureBoolean (Future<Response> pendingRequest) { super(pendingRequest); }

        public Boolean get () throws InterruptedException, ExecutionException {
          ValueResponse valResp = (ValueResponse) pendingRequest.get();
          return valResp.getBooleanValue();
        }

        public Boolean get (long timeout, TimeUnit unit)
          throws InterruptedException, ExecutionException, TimeoutException
        {
          ValueResponse valResp = (ValueResponse) pendingRequest.get(timeout, unit);
          return valResp.getBooleanValue();
        }
  }
  public static class FutureString extends FutureResultBase implements Future<String>{

        protected FutureString (Future<Response> pendingRequest) { super(pendingRequest); }

        public String get () throws InterruptedException, ExecutionException {
          ValueResponse valResp = (ValueResponse) pendingRequest.get();
          return valResp.getStringValue();
        }

        public String get (long timeout, TimeUnit unit)
          throws InterruptedException, ExecutionException, TimeoutException
        {
          ValueResponse valResp = (ValueResponse) pendingRequest.get(timeout, unit);
          return valResp.getStringValue();
        }
  }
  public static class FutureRedisType extends FutureResultBase implements Future<RedisType>{

        protected FutureRedisType (Future<Response> pendingRequest) { super(pendingRequest); }

        private final RedisType getRedisType(ValueResponse resp){
      String stringValue = resp.getStringValue();
      return RedisType.valueOf(stringValue);
        }
        public RedisType get () throws InterruptedException, ExecutionException {
          ValueResponse valResp = (ValueResponse) pendingRequest.get();
          return getRedisType(valResp);
        }

        public RedisType get (long timeout, TimeUnit unit)
          throws InterruptedException, ExecutionException, TimeoutException
        {
          ValueResponse valResp = (ValueResponse) pendingRequest.get(timeout, unit);
          return getRedisType(valResp);
        }
  }
  public static class FutureLong extends FutureResultBase implements Future<Long>{

        protected FutureLong (Future<Response> pendingRequest) { super(pendingRequest); }

        public Long get () throws InterruptedException, ExecutionException {
          ValueResponse valResp = (ValueResponse) pendingRequest.get();
          return valResp.getLongValue();
        }

        public Long get (long timeout, TimeUnit unit)
          throws InterruptedException, ExecutionException, TimeoutException
        {
          ValueResponse valResp = (ValueResponse) pendingRequest.get(timeout, unit);
          return valResp.getLongValue();
        }
  }
  public static class FutureDouble extends FutureResultBase implements Future<Double>{

        protected FutureDouble (Future<Response> pendingRequest) { super(pendingRequest); }

        public Double get () throws InterruptedException, ExecutionException {
          BulkResponse bulkResp = (BulkResponse) pendingRequest.get();
          if(bulkResp.getBulkData() != null)
            return Convert.toDouble(bulkResp.getBulkData());
          return null;
        }

        public Double get (long timeout, TimeUnit unit)
          throws InterruptedException, ExecutionException, TimeoutException
        {
          BulkResponse bulkResp = (BulkResponse) pendingRequest.get(timeout, unit);
          if(bulkResp.getBulkData() != null)
            return Convert.toDouble(bulkResp.getBulkData());
          return null;
        }
  }
  public static class FutureByteArray extends FutureResultBase implements Future<byte[]>{

        protected FutureByteArray (Future<Response> pendingRequest) { super(pendingRequest); }

        public byte[] get () throws InterruptedException, ExecutionException {
          BulkResponse resp = (BulkResponse) pendingRequest.get();
          return resp.getBulkData();
        }

        public byte[] get (long timeout, TimeUnit unit)
          throws InterruptedException, ExecutionException, TimeoutException
        {
          BulkResponse resp = (BulkResponse) pendingRequest.get(timeout, unit);
          return resp.getBulkData();
        }
  }
  public static class FutureByteArrayList extends FutureResultBase implements Future<List<byte[]>>{

        protected FutureByteArrayList (Future<Response> pendingRequest) { super(pendingRequest); }

        public List<byte[]> get () throws InterruptedException, ExecutionException {
          MultiBulkResponse resp = (MultiBulkResponse) pendingRequest.get();
          return resp.getMultiBulkData();
        }

        public List<byte[]> get (long timeout, TimeUnit unit)
          throws InterruptedException, ExecutionException, TimeoutException
        {
          MultiBulkResponse resp = (MultiBulkResponse) pendingRequest.get(timeout, unit);
          return resp.getMultiBulkData();
        }
  }
  public static class FutureKeyList extends FutureResultBase implements Future<List<String>>{

        protected FutureKeyList (Future<Response> pendingRequest) { super(pendingRequest); }

        private List<String>  getResultList (BulkResponse resp) {
        StringTokenizer tokenizer = new StringTokenizer(new String(resp.getBulkData()), " ");
        List<String>  list = new ArrayList <String>(12);
        while (tokenizer.hasMoreTokens()){
          list.add(tokenizer.nextToken());
        }
        return list;
        }
        public List<String> get () throws InterruptedException, ExecutionException {
          BulkResponse resp = (BulkResponse) pendingRequest.get();
          return getResultList(resp);
        }

        public List<String> get (long timeout, TimeUnit unit)
          throws InterruptedException, ExecutionException, TimeoutException
        {
          BulkResponse resp = (BulkResponse) pendingRequest.get(timeout, unit);
          return getResultList(resp);
        }
  }
  public static class FutureInfo extends FutureResultBase implements Future<Map<String, String>>{

        protected FutureInfo (Future<Response> pendingRequest) { super(pendingRequest); }

        private Map<String, String>  getResultMap (BulkResponse resp) {
        StringTokenizer tokenizer = new StringTokenizer(new String(resp.getBulkData()), "\r\n");
        Map<String, String>  infomap = new HashMap<String, String>(12);
        while (tokenizer.hasMoreTokens()){
          String info = tokenizer.nextToken();
          int c = info.indexOf(':');
          String key =info.substring(0, c);
          String value = info.substring(c+1);
          infomap.put(key, value);
        }
        return infomap;
        }
        public Map<String, String> get () throws InterruptedException, ExecutionException {
          BulkResponse resp = (BulkResponse) pendingRequest.get();
          return getResultMap(resp);
        }

        public Map<String, String> get (long timeout, TimeUnit unit)
          throws InterruptedException, ExecutionException, TimeoutException
        {
          BulkResponse resp = (BulkResponse) pendingRequest.get(timeout, unit);
          return getResultMap(resp);
        }
  }
}
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