DolphinScheduler/dolphinscheduler-alert/src/main/java/org/apache/dolphinscheduler/alert/utils/FuncUtils.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.dolphinscheduler.alert.utils;

import org.apache.dolphinscheduler.common.utils.StringUtils;

public class FuncUtils {

    private FuncUtils() {
        throw new IllegalStateException(FuncUtils.class.getName());
    }

    public static String mkString(Iterable<String> list, String split) {

        if (null == list || StringUtils.isEmpty(split)) {
            return null;
        }

        StringBuilder sb = new StringBuilder();
        boolean first = true;
        for (String item : list) {
            if (first) {
                first = false;
            } else {
                sb.append(split);
            }
            sb.append(item);
        }
        return sb.toString();
    }

}