Helper.java

/*
 * #!
 * %
 * Copyright (C) 2014 - 2016 Humboldt-Universität zu Berlin
 * %
 * 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 storm.lrb.tools;

import java.util.Iterator;
import java.util.List;

import backtype.storm.topology.base.BaseRichBolt;





/**
 * Helper class contains useful methods.
 * 
 */
public class Helper {
	
	public static String readable(List<String> fields) {
		StringBuilder tmp = new StringBuilder();
		for(Iterator<String> iterator = fields.iterator(); iterator.hasNext();) {
			String string = iterator.next();
			if(iterator.hasNext()) {
				tmp.append(string).append("-");
			} else {
				tmp.append(string);
			}
		}
		return tmp.toString();
	}
	
	public final static String ISSUE_REPORT_URL = "https://github.com/mjsax/aeolus/issues/new";
	
	/**
	 * the key for the
	 * {@link BaseRichBolt#prepare(java.util.Map, backtype.storm.task.TopologyContext, backtype.storm.task.OutputCollector) }
	 * method's {@code conf} argument to access the {@code String} to initialize unseralizable instance
	 */
	public final static String TOLL_DATA_STORE_CONF_KEY = "aeolus.lrb.datastore";
	
	private Helper() {}
}