Example usage for org.springframework.data.redis.connection RedisConnection zRange

Introduction

In this page you can find the example usage for org.springframework.data.redis.connection RedisConnection zRange.

Prototype

@Nullable
Set<byte[]> zRange(byte[] key, long start, long end);

Source Link

Document

Get elements between start and end from sorted set.

Usage

From source file:com.mauersu.util.redis.DefaultZSetOperations.java

public Set<V> range(K key, final long start, final long end) {
    final byte[] rawKey = rawKey(key);

    Set<byte[]> rawValues = execute(new RedisCallback<Set<byte[]>>() {

        public Set<byte[]> doInRedis(RedisConnection connection) {
            connection.select(dbIndex);/*  ww  w.j  a  va2 s  .c  o  m*/
            return connection.zRange(rawKey, start, end);
        }
    }, true);

    return deserializeValues(rawValues);
}

---

From source file:grails.plugin.cache.redis.GrailsRedisCache.java

@SuppressWarnings("unchecked")
@Override//from   ww w  . j a v  a2 s.c om
public Collection<Object> getAllKeys() {
    Set<byte[]> serializedKeys = (Set<byte[]>) template.execute(new RedisCallback<Set<byte[]>>() {
        public Set<byte[]> doInRedis(RedisConnection connection) throws DataAccessException {
            Set<byte[]> allKeys = new HashSet<byte[]>();
            int offset = 0;
            boolean finished = false;
            while (!finished) {
                // need to paginate the keys
                Set<byte[]> keys = connection.zRange(setName, (offset) * PAGE_SIZE,
                        (offset + 1) * PAGE_SIZE - 1);
                allKeys.addAll(keys);
                finished = keys.size() < PAGE_SIZE;
                offset++;
            }
            return allKeys;
        }
    }, true);

    @SuppressWarnings("rawtypes")
    Collection<Object> keys = new HashSet(serializedKeys.size());
    RedisSerializer<byte[]> keySerializer = template.getKeySerializer();
    for (byte[] bytes : serializedKeys) {
        keys.add(keySerializer.deserialize(bytes));
    }

    return keys;
}

---

From source file:grails.plugin.cache.redis.GrailsRedisCache.java

@SuppressWarnings("unchecked")
@Override//w w w.  j a  v  a  2 s. c  o m
public void clear() {
    // need to del each key individually
    template.execute(new RedisCallback<Object>() {
        public Object doInRedis(RedisConnection connection) throws DataAccessException {
            // another clear is on-going
            if (connection.exists(cacheLockName)) {
                return null;
            }

            try {
                connection.set(cacheLockName, cacheLockName);

                int offset = 0;
                boolean finished = false;

                do {
                    // need to paginate the keys
                    Set<byte[]> keys = connection.zRange(setName, (offset) * PAGE_SIZE,
                            (offset + 1) * PAGE_SIZE - 1);
                    finished = keys.size() < PAGE_SIZE;
                    offset++;
                    if (!keys.isEmpty()) {
                        connection.del(keys.toArray(new byte[keys.size()][]));
                    }
                } while (!finished);

                connection.del(setName);
                return null;

            } finally {
                connection.del(cacheLockName);
            }
        }
    }, true);
}

---

From source file:com.zxy.commons.cache.RedisUtils.java

/**
 * Get elements between {@code begin} and {@code end} from sorted set.
 * <p>//from w w w.  j a  v  a  2s . c  o  m
 * See http://redis.io/commands/zrange
 * 
 * @param key key
 * @param begin begin
 * @param end end
 * @return Set<byte[]>
 */
public static Set<byte[]> zRange(byte[] key, long begin, long end) {
    return redisTemplate.execute(new RedisCallback<Set<byte[]>>() {
        @Override
        public Set<byte[]> doInRedis(RedisConnection redis) throws DataAccessException {
            return redis.zRange(key, begin, end);
        }
    });
}

---

From source file:com.zxy.commons.cache.RedisHelper.java

/**
 * Get elements between {@code begin} and {@code end} from sorted set.
 * <p>/*from  ww  w .jav a 2  s  .co m*/
 * See http://redis.io/commands/zrange
 * 
 * @param key key
 * @param begin begin
 * @param end end
 * @return Set<byte[]>
 */
public Set<byte[]> zRange(byte[] key, long begin, long end) {
    return redisTemplate.execute(new RedisCallback<Set<byte[]>>() {
        @Override
        public Set<byte[]> doInRedis(RedisConnection redis) throws DataAccessException {
            return redis.zRange(key, begin, end);
        }
    });
}

---

From source file:org.springframework.data.redis.cache.RedisCache.java

public void clear() {
    // need to del each key individually
    template.execute(new RedisCallback<Object>() {
        public Object doInRedis(RedisConnection connection) throws DataAccessException {
            // another clear is on-going
            if (connection.exists(cacheLockName)) {
                return null;
            }//w ww. ja va  2s  . com

            try {
                connection.set(cacheLockName, cacheLockName);

                int offset = 0;
                boolean finished = false;

                do {
                    // need to paginate the keys
                    Set<byte[]> keys = connection.zRange(setName, (offset) * PAGE_SIZE,
                            (offset + 1) * PAGE_SIZE - 1);
                    finished = keys.size() < PAGE_SIZE;
                    offset++;
                    if (!keys.isEmpty()) {
                        connection.del(keys.toArray(new byte[keys.size()][]));
                    }
                } while (!finished);

                connection.del(setName);
                return null;

            } finally {
                connection.del(cacheLockName);
            }
        }
    }, true);
}

---