JedisClusterZSetCommands.java

/*
 * Copyright 2017 the original author or authors.
 *
 * 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.springframework.data.redis.connection.jedis;

import redis.clients.jedis.ScanParams;
import redis.clients.jedis.ZParams;

import java.util.Set;

import org.springframework.dao.DataAccessException;
import org.springframework.dao.InvalidDataAccessApiUsageException;
import org.springframework.data.redis.connection.ClusterSlotHashUtil;
import org.springframework.data.redis.connection.RedisZSetCommands;
import org.springframework.data.redis.core.Cursor;
import org.springframework.data.redis.core.ScanCursor;
import org.springframework.data.redis.core.ScanIteration;
import org.springframework.data.redis.core.ScanOptions;
import org.springframework.data.redis.util.ByteUtils;
import org.springframework.util.Assert;

/**
 * @author Christoph Strobl
 * @since 2.0
 */
class JedisClusterZSetCommands implements RedisZSetCommands {

	private final JedisClusterConnection connection;

	public JedisClusterZSetCommands(JedisClusterConnection connection) {
		this.connection = connection;
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zAdd(byte[], double, byte[])
	 */
	@Override
	public Boolean zAdd(byte[] key, double score, byte[] value) {

		try {
			return JedisConverters.toBoolean(connection.getCluster().zadd(key, score, value));
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zAdd(byte[], java.util.Set)
	 */
	@Override
	public Long zAdd(byte[] key, Set<Tuple> tuples) {

		// TODO: need to move the tuple conversion form jedisconnection.
		throw new UnsupportedOperationException();
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRem(byte[], byte[][])
	 */
	@Override
	public Long zRem(byte[] key, byte[]... values) {

		try {
			return connection.getCluster().zrem(key, values);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}

	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zIncrBy(byte[], double, byte[])
	 */
	@Override
	public Double zIncrBy(byte[] key, double increment, byte[] value) {
		try {
			return connection.getCluster().zincrby(key, increment, value);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRank(byte[], byte[])
	 */
	@Override
	public Long zRank(byte[] key, byte[] value) {

		try {
			return connection.getCluster().zrank(key, value);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRevRank(byte[], byte[])
	 */
	@Override
	public Long zRevRank(byte[] key, byte[] value) {

		try {
			return connection.getCluster().zrevrank(key, value);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRange(byte[], long, long)
	 */
	@Override
	public Set<byte[]> zRange(byte[] key, long begin, long end) {

		try {
			return connection.getCluster().zrange(key, begin, end);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRangeByScoreWithScores(byte[], org.springframework.data.redis.connection.RedisZSetCommands.Range, org.springframework.data.redis.connection.RedisZSetCommands.Limit)
	 */
	@Override
	public Set<Tuple> zRangeByScoreWithScores(byte[] key, Range range, Limit limit) {

		Assert.notNull(range, "Range cannot be null for ZRANGEBYSCOREWITHSCORES.");

		byte[] min = JedisConverters.boundaryToBytesForZRange(range.getMin(), JedisConverters.NEGATIVE_INFINITY_BYTES);
		byte[] max = JedisConverters.boundaryToBytesForZRange(range.getMax(), JedisConverters.POSITIVE_INFINITY_BYTES);

		try {
			if (limit != null) {
				return JedisConverters.toTupleSet(
						connection.getCluster().zrangeByScoreWithScores(key, min, max, limit.getOffset(), limit.getCount()));
			}
			return JedisConverters.toTupleSet(connection.getCluster().zrangeByScoreWithScores(key, min, max));
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRevRangeByScore(byte[], org.springframework.data.redis.connection.RedisZSetCommands.Range, org.springframework.data.redis.connection.RedisZSetCommands.Limit)
	 */
	@Override
	public Set<byte[]> zRevRangeByScore(byte[] key, Range range, Limit limit) {

		Assert.notNull(range, "Range cannot be null for ZREVRANGEBYSCORE.");
		byte[] min = JedisConverters.boundaryToBytesForZRange(range.getMin(), JedisConverters.NEGATIVE_INFINITY_BYTES);
		byte[] max = JedisConverters.boundaryToBytesForZRange(range.getMax(), JedisConverters.POSITIVE_INFINITY_BYTES);

		try {
			if (limit != null) {
				return connection.getCluster().zrevrangeByScore(key, max, min, limit.getOffset(), limit.getCount());
			}
			return connection.getCluster().zrevrangeByScore(key, max, min);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRevRangeByScoreWithScores(byte[], org.springframework.data.redis.connection.RedisZSetCommands.Range, org.springframework.data.redis.connection.RedisZSetCommands.Limit)
	 */
	@Override
	public Set<Tuple> zRevRangeByScoreWithScores(byte[] key, Range range, Limit limit) {

		Assert.notNull(range, "Range cannot be null for ZREVRANGEBYSCOREWITHSCORES.");

		byte[] min = JedisConverters.boundaryToBytesForZRange(range.getMin(), JedisConverters.NEGATIVE_INFINITY_BYTES);
		byte[] max = JedisConverters.boundaryToBytesForZRange(range.getMax(), JedisConverters.POSITIVE_INFINITY_BYTES);

		try {
			if (limit != null) {
				return JedisConverters.toTupleSet(
						connection.getCluster().zrevrangeByScoreWithScores(key, max, min, limit.getOffset(), limit.getCount()));
			}
			return JedisConverters.toTupleSet(connection.getCluster().zrevrangeByScoreWithScores(key, max, min));
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zCount(byte[], org.springframework.data.redis.connection.RedisZSetCommands.Range)
	 */
	@Override
	public Long zCount(byte[] key, Range range) {

		Assert.notNull(range, "Range cannot be null for ZCOUNT.");

		byte[] min = JedisConverters.boundaryToBytesForZRange(range.getMin(), JedisConverters.NEGATIVE_INFINITY_BYTES);
		byte[] max = JedisConverters.boundaryToBytesForZRange(range.getMax(), JedisConverters.POSITIVE_INFINITY_BYTES);

		try {
			return connection.getCluster().zcount(key, min, max);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRemRangeByScore(byte[], org.springframework.data.redis.connection.RedisZSetCommands.Range)
	 */
	@Override
	public Long zRemRangeByScore(byte[] key, Range range) {

		Assert.notNull(range, "Range cannot be null for ZREMRANGEBYSCORE.");

		byte[] min = JedisConverters.boundaryToBytesForZRange(range.getMin(), JedisConverters.NEGATIVE_INFINITY_BYTES);
		byte[] max = JedisConverters.boundaryToBytesForZRange(range.getMax(), JedisConverters.POSITIVE_INFINITY_BYTES);

		try {
			return connection.getCluster().zremrangeByScore(key, min, max);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}

	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRangeByScore(byte[], org.springframework.data.redis.connection.RedisZSetCommands.Range, org.springframework.data.redis.connection.RedisZSetCommands.Limit)
	 */
	@Override
	public Set<byte[]> zRangeByScore(byte[] key, Range range, Limit limit) {

		Assert.notNull(range, "Range cannot be null for ZRANGEBYSCORE.");

		byte[] min = JedisConverters.boundaryToBytesForZRange(range.getMin(), JedisConverters.NEGATIVE_INFINITY_BYTES);
		byte[] max = JedisConverters.boundaryToBytesForZRange(range.getMax(), JedisConverters.POSITIVE_INFINITY_BYTES);

		try {
			if (limit != null) {
				return connection.getCluster().zrangeByScore(key, min, max, limit.getOffset(), limit.getCount());
			}
			return connection.getCluster().zrangeByScore(key, min, max);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRangeByLex(byte[], org.springframework.data.redis.connection.RedisZSetCommands.Range, org.springframework.data.redis.connection.RedisZSetCommands.Limit)
	 */
	@Override
	public Set<byte[]> zRangeByLex(byte[] key, Range range, Limit limit) {

		Assert.notNull(range, "Range cannot be null for ZRANGEBYLEX.");

		byte[] min = JedisConverters.boundaryToBytesForZRangeByLex(range.getMin(), JedisConverters.toBytes("-"));
		byte[] max = JedisConverters.boundaryToBytesForZRangeByLex(range.getMax(), JedisConverters.toBytes("+"));

		try {
			if (limit != null) {
				return connection.getCluster().zrangeByLex(key, min, max, limit.getOffset(), limit.getCount());
			}
			return connection.getCluster().zrangeByLex(key, min, max);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRangeWithScores(byte[], long, long)
	 */
	@Override
	public Set<Tuple> zRangeWithScores(byte[] key, long begin, long end) {

		try {
			return JedisConverters.toTupleSet(connection.getCluster().zrangeWithScores(key, begin, end));
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRangeByScore(byte[], double, double)
	 */
	@Override
	public Set<byte[]> zRangeByScore(byte[] key, double min, double max) {

		try {
			return connection.getCluster().zrangeByScore(key, min, max);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRangeByScoreWithScores(byte[], double, double)
	 */
	@Override
	public Set<Tuple> zRangeByScoreWithScores(byte[] key, double min, double max) {

		try {
			return JedisConverters.toTupleSet(connection.getCluster().zrangeByScoreWithScores(key, min, max));
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRangeByScore(byte[], double, double, long, long)
	 */
	@Override
	public Set<byte[]> zRangeByScore(byte[] key, double min, double max, long offset, long count) {

		if (offset > Integer.MAX_VALUE || count > Integer.MAX_VALUE) {
			throw new IllegalArgumentException("Count/Offset cannot exceed Integer.MAX_VALUE!");
		}

		try {
			return connection.getCluster().zrangeByScore(key, min, max, Long.valueOf(offset).intValue(),
					Long.valueOf(count).intValue());
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRangeByScoreWithScores(byte[], double, double, long, long)
	 */
	@Override
	public Set<Tuple> zRangeByScoreWithScores(byte[] key, double min, double max, long offset, long count) {

		if (offset > Integer.MAX_VALUE || count > Integer.MAX_VALUE) {
			throw new IllegalArgumentException("Count/Offset cannot exceed Integer.MAX_VALUE!");
		}

		try {
			return JedisConverters.toTupleSet(connection.getCluster().zrangeByScoreWithScores(key, min, max,
					Long.valueOf(offset).intValue(), Long.valueOf(count).intValue()));
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRevRange(byte[], long, long)
	 */
	@Override
	public Set<byte[]> zRevRange(byte[] key, long begin, long end) {

		try {
			return connection.getCluster().zrevrange(key, begin, end);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRevRangeWithScores(byte[], long, long)
	 */
	@Override
	public Set<Tuple> zRevRangeWithScores(byte[] key, long begin, long end) {

		try {
			return JedisConverters.toTupleSet(connection.getCluster().zrevrangeWithScores(key, begin, end));
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRevRangeByScore(byte[], double, double)
	 */
	@Override
	public Set<byte[]> zRevRangeByScore(byte[] key, double min, double max) {

		try {
			return connection.getCluster().zrevrangeByScore(key, max, min);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRevRangeByScoreWithScores(byte[], double, double)
	 */
	@Override
	public Set<Tuple> zRevRangeByScoreWithScores(byte[] key, double min, double max) {

		try {
			return JedisConverters.toTupleSet(connection.getCluster().zrevrangeByScoreWithScores(key, max, min));
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRevRangeByScore(byte[], double, double, long, long)
	 */
	@Override
	public Set<byte[]> zRevRangeByScore(byte[] key, double min, double max, long offset, long count) {

		if (offset > Integer.MAX_VALUE || count > Integer.MAX_VALUE) {
			throw new IllegalArgumentException("Count/Offset cannot exceed Integer.MAX_VALUE!");
		}

		try {
			return connection.getCluster().zrevrangeByScore(key, max, min, Long.valueOf(offset).intValue(),
					Long.valueOf(count).intValue());
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRevRangeByScoreWithScores(byte[], double, double, long, long)
	 */
	@Override
	public Set<Tuple> zRevRangeByScoreWithScores(byte[] key, double min, double max, long offset, long count) {

		if (offset > Integer.MAX_VALUE || count > Integer.MAX_VALUE) {
			throw new IllegalArgumentException("Count/Offset cannot exceed Integer.MAX_VALUE!");
		}

		try {
			return JedisConverters.toTupleSet(connection.getCluster().zrevrangeByScoreWithScores(key, max, min,
					Long.valueOf(offset).intValue(), Long.valueOf(count).intValue()));
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zCount(byte[], double, double)
	 */
	@Override
	public Long zCount(byte[] key, double min, double max) {

		try {
			return connection.getCluster().zcount(key, min, max);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zCard(byte[])
	 */
	@Override
	public Long zCard(byte[] key) {

		try {
			return connection.getCluster().zcard(key);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zScore(byte[], byte[])
	 */
	@Override
	public Double zScore(byte[] key, byte[] value) {

		try {
			return connection.getCluster().zscore(key, value);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRemRange(byte[], long, long)
	 */
	@Override
	public Long zRemRange(byte[] key, long begin, long end) {

		try {
			return connection.getCluster().zremrangeByRank(key, begin, end);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRemRangeByScore(byte[], double, double)
	 */
	@Override
	public Long zRemRangeByScore(byte[] key, double min, double max) {

		try {
			return connection.getCluster().zremrangeByScore(key, min, max);
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zUnionStore(byte[], byte[][])
	 */
	@Override
	public Long zUnionStore(byte[] destKey, byte[]... sets) {

		byte[][] allKeys = ByteUtils.mergeArrays(destKey, sets);

		if (ClusterSlotHashUtil.isSameSlotForAllKeys(allKeys)) {

			try {
				return connection.getCluster().zunionstore(destKey, sets);
			} catch (Exception ex) {
				throw convertJedisAccessException(ex);
			}
		}

		throw new InvalidDataAccessApiUsageException("ZUNIONSTORE can only be executed when all keys map to the same slot");
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zUnionStore(byte[], org.springframework.data.redis.connection.RedisZSetCommands.Aggregate, int[], byte[][])
	 */
	@Override
	public Long zUnionStore(byte[] destKey, Aggregate aggregate, int[] weights, byte[]... sets) {

		byte[][] allKeys = ByteUtils.mergeArrays(destKey, sets);

		if (ClusterSlotHashUtil.isSameSlotForAllKeys(allKeys)) {

			ZParams zparams = new ZParams().weights(weights).aggregate(ZParams.Aggregate.valueOf(aggregate.name()));

			try {
				return connection.getCluster().zunionstore(destKey, zparams, sets);
			} catch (Exception ex) {
				throw convertJedisAccessException(ex);
			}
		}

		throw new InvalidDataAccessApiUsageException("ZUNIONSTORE can only be executed when all keys map to the same slot");
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zInterStore(byte[], byte[][])
	 */
	@Override
	public Long zInterStore(byte[] destKey, byte[]... sets) {

		byte[][] allKeys = ByteUtils.mergeArrays(destKey, sets);

		if (ClusterSlotHashUtil.isSameSlotForAllKeys(allKeys)) {

			try {
				return connection.getCluster().zinterstore(destKey, sets);
			} catch (Exception ex) {
				throw convertJedisAccessException(ex);
			}
		}

		throw new InvalidDataAccessApiUsageException("ZINTERSTORE can only be executed when all keys map to the same slot");
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zInterStore(byte[], org.springframework.data.redis.connection.RedisZSetCommands.Aggregate, int[], byte[][])
	 */
	@Override
	public Long zInterStore(byte[] destKey, Aggregate aggregate, int[] weights, byte[]... sets) {

		byte[][] allKeys = ByteUtils.mergeArrays(destKey, sets);

		if (ClusterSlotHashUtil.isSameSlotForAllKeys(allKeys)) {

			ZParams zparams = new ZParams().weights(weights).aggregate(ZParams.Aggregate.valueOf(aggregate.name()));

			try {
				return connection.getCluster().zinterstore(destKey, zparams, sets);
			} catch (Exception ex) {
				throw convertJedisAccessException(ex);
			}
		}

		throw new IllegalArgumentException("ZINTERSTORE can only be executed when all keys map to the same slot");
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zScan(byte[], org.springframework.data.redis.core.ScanOptions)
	 */
	@Override
	public Cursor<Tuple> zScan(final byte[] key, final ScanOptions options) {
		return new ScanCursor<Tuple>(options) {

			@Override
			protected ScanIteration<Tuple> doScan(long cursorId, ScanOptions options) {

				ScanParams params = JedisConverters.toScanParams(options);

				redis.clients.jedis.ScanResult<redis.clients.jedis.Tuple> result = connection.getCluster().zscan(key,
						JedisConverters.toBytes(cursorId), params);
				return new ScanIteration<>(Long.valueOf(result.getStringCursor()),
						JedisConverters.tuplesToTuples().convert(result.getResult()));
			}
		}.open();
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRangeByScore(byte[], java.lang.String, java.lang.String)
	 */
	@Override
	public Set<byte[]> zRangeByScore(byte[] key, String min, String max) {

		try {
			return connection.getCluster().zrangeByScore(key, JedisConverters.toBytes(min), JedisConverters.toBytes(max));
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.RedisZSetCommands#zRangeByScore(byte[], java.lang.String, java.lang.String, long, long)
	 */
	@Override
	public Set<byte[]> zRangeByScore(byte[] key, String min, String max, long offset, long count) {

		if (offset > Integer.MAX_VALUE || count > Integer.MAX_VALUE) {
			throw new IllegalArgumentException("Count/Offset cannot exceed Integer.MAX_VALUE!");
		}

		try {
			return connection.getCluster().zrangeByScore(key, JedisConverters.toBytes(min), JedisConverters.toBytes(max),
					Long.valueOf(offset).intValue(), Long.valueOf(count).intValue());
		} catch (Exception ex) {
			throw convertJedisAccessException(ex);
		}
	}

	private DataAccessException convertJedisAccessException(Exception ex) {
		return connection.convertJedisAccessException(ex);
	}

}