org.hibernate.cache.redis.util.CollectionUtil Maven / Gradle / Ivy
/*
* Copyright 2011-2013 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.hibernate.cache.redis.util;
import java.util.Collection;
import java.util.Set;
/**
* Collection utility class
*
* @author 배성혁 [email protected]
* @since 13. 4. 30. 오후 11:13
*/
public abstract class CollectionUtil {
private CollectionUtil() {}
public static String toString(Collection collection) {
StringBuilder sb = new StringBuilder(collection.size() * 2);
for (Object item : collection) {
sb.append(item).append(",");
}
// sb.deleteCharAt(sb.lastIndexOf(","));
return sb.toString();
}
public static byte[][] toArray(Set set) {
if (set == null || set.size() == 0)
return new byte[0][];
return set.toArray(new byte[set.size()][]);
}
}