org.springframework.data.redis.core.ConvertingCursor Java Examples

The following examples show how to use org.springframework.data.redis.core.ConvertingCursor. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example #1

Source File: RedisUtils.java From ad with Apache License 2.0

8 votes

public static Set<String> scan(RedisTemplate<String, ?> redisTemplate, String pattern, int count) {
    ScanOptions scanOptions;
    if (count > -1) {
        scanOptions = ScanOptions.scanOptions().match(pattern).count(count).build();
    } else {
        scanOptions = ScanOptions.scanOptions().match(pattern).build();
    }
    ConvertingCursor<byte[], String> cursor = redisTemplate.executeWithStickyConnection((redisConnection) ->
            new ConvertingCursor<>(redisConnection.scan(scanOptions),
                    new StringRedisSerializer()::deserialize)
    );
    if (cursor != null) {
        Set<String> set = Sets.newHashSet();
        cursor.forEachRemaining(set::add);
        return set;
    }
    return Collections.emptySet();
}

Example #2

Source File: DefaultSetOperations.java From redis-admin with Apache License 2.0

6 votes

@Override
public Cursor<V> scan(K key, final ScanOptions options) {

	final byte[] rawKey = rawKey(key);
	return execute(new RedisCallback<Cursor<V>>() {

		@Override
		public Cursor<V> doInRedis(RedisConnection connection) throws DataAccessException {
			return new ConvertingCursor<byte[], V>(connection.sScan(rawKey, options), new Converter<byte[], V>() {

				@Override
				public V convert(byte[] source) {
					return deserializeValue(source);
				}
			});
		}
	}, true);

}

Example #3

Source File: DefaultZSetOperations.java From redis-admin with Apache License 2.0

6 votes

@Override
public Cursor<TypedTuple<V>> scan(K key, final ScanOptions options) {

	final byte[] rawKey = rawKey(key);
	Cursor<Tuple> cursor = execute(new RedisCallback<Cursor<Tuple>>() {

		@Override
		public Cursor<Tuple> doInRedis(RedisConnection connection) throws DataAccessException {
			connection.select(dbIndex);
			return connection.zScan(rawKey, options);
		}
	}, true);

	return new ConvertingCursor<Tuple, TypedTuple<V>>(cursor, new Converter<Tuple, TypedTuple<V>>() {

		@Override
		public TypedTuple<V> convert(Tuple source) {
			return deserializeTuple(source);
		}
	});
}

Example #4

Source File: DefaultHashOperations.java From redis-admin with Apache License 2.0

5 votes

@Override
public Cursor<Entry<HK, HV>> scan(K key, final ScanOptions options) {

	final byte[] rawKey = rawKey(key);
	return execute(new RedisCallback<Cursor<Map.Entry<HK, HV>>>() {

		@Override
		public Cursor<Entry<HK, HV>> doInRedis(RedisConnection connection) throws DataAccessException {

			return new ConvertingCursor<Map.Entry<byte[], byte[]>, Map.Entry<HK, HV>>(connection.hScan(rawKey, options),
					new Converter<Map.Entry<byte[], byte[]>, Map.Entry<HK, HV>>() {

						@Override
						public Entry<HK, HV> convert(final Entry<byte[], byte[]> source) {

							return new Map.Entry<HK, HV>() {

								@Override
								public HK getKey() {
									return deserializeHashKey(source.getKey());
								}

								@Override
								public HV getValue() {
									return deserializeHashValue(source.getValue());
								}

								@Override
								public HV setValue(HV value) {
									throw new UnsupportedOperationException("Values cannot be set when scanning through entries.");
								}
							};

						}
					});
		}

	}, true);

}