ComparatorUtil.java

/**
 * Copyright 2014 tgrape Inc.
 * 
 * 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 ph.fingra.statisticsweb.common.util;

import java.lang.reflect.Array;
import java.util.List;
import java.util.Map;

public abstract class ComparatorUtil {
    
    @SuppressWarnings("rawtypes")
    public static boolean isEmpty(Object obj){
        if( obj instanceof String ) return obj==null || "".equals(obj.toString().trim());
        else if( obj instanceof List ) return obj==null || ((List)obj).isEmpty();
        else if( obj instanceof Map ) return obj==null || ((Map)obj).isEmpty();
        else if( obj instanceof Object[] ) return obj==null || Array.getLength(obj)==0;
        else return obj==null;
    }
    
    public static boolean isNotEmpty(String s){
        return !isEmpty(s);
    }
}