Util.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.usergrid.chop.webapp.elasticsearch;

import org.apache.commons.lang.StringUtils;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

public class Util {

    private static final SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

    public static Date toDate(String dateStr) {
        Date date = null;

        try {
            date = DATE_FORMAT.parse(dateStr.replaceAll("T", " "));
        } catch (ParseException e) {
            e.printStackTrace();
        }

        return date;
    }

    public static int getInt(Map<String, Object> json, String key) {
        Number n = (Number) json.get(key);
        return n != null ? n.intValue() : 0;
    }

    public static long getLong(Map<String, Object> json, String key) {
        Long n = (Long) json.get(key);
        return n != null ? n : 0;
    }

    public static boolean getBoolean(Map<String, Object> json, String key) {
        Boolean bool = (Boolean) json.get(key);
        return bool != null && bool;
    }

    public static String getString(Map<String, Object> json, String key) {
        return (String) json.get(key);
    }

    /**
     * Converts a string to map. String should have this format: {2=b, 1=a}.
     */
    public static Map<String, String> getMap(Map<String, Object> json, String key) {

        HashMap<String, String> map = new HashMap<String, String>();
        String str = getString(json, key);

        if (StringUtils.isEmpty(str)
                || !str.startsWith("{")
                || !str.endsWith("}")
                || str.equals("{}")) {
            return map;
        }

        String values[] = StringUtils.substringBetween(str, "{", "}").split(",");

        for (String s : values) {
            map.put(
                    StringUtils.substringBefore(s, "=").trim(),
                    StringUtils.substringAfter(s, "=").trim()
            );
        }

        return map;
    }

}