LettuceClusterStringCommands.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.lettuce;

import java.util.Map;

import org.springframework.data.redis.connection.ClusterSlotHashUtil;

/**
 * @author Christoph Strobl
 * @since 2.0
 */
class LettuceClusterStringCommands extends LettuceStringCommands {

	private final LettuceClusterConnection connection;

	public LettuceClusterStringCommands(LettuceClusterConnection connection) {

		super(connection);
		this.connection = connection;
	}

	/*
	 * (non-Javadoc)
	 * @see org.springframework.data.redis.connection.lettuce.LettuceConnection#mSetNX(java.util.Map)
	 */
	@Override
	public Boolean mSetNX(Map<byte[], byte[]> tuples) {

		if (ClusterSlotHashUtil.isSameSlotForAllKeys(tuples.keySet().toArray(new byte[tuples.keySet().size()][]))) {
			return super.mSetNX(tuples);
		}

		boolean result = true;
		for (Map.Entry<byte[], byte[]> entry : tuples.entrySet()) {
			if (!setNX(entry.getKey(), entry.getValue()) && result) {
				result = false;
			}
		}
		return result;
	}
}