content: /**
   * Copyright 1999-2011 Alibaba Group
   *
   * 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 com.alibaba.cobar.client.support.utils;
  
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.Iterator;
  import java.util.List;
  
  public class CollectionUtils {
      @SuppressWarnings("rawtypes")
      public static Collection select(Collection inputCollection, Predicate predicate) {
          List answer = new ArrayList(inputCollection.size());
          select(inputCollection, predicate, answer);
          return answer;
      }
  
      @SuppressWarnings({ "rawtypes", "unchecked" })
      public static void select(Collection inputCollection, Predicate predicate,
                                Collection outputCollection) {
          if (inputCollection != null && predicate != null) {
              for (Iterator iter = inputCollection.iterator(); iter.hasNext();) {
                  Object item = iter.next();
                  if (predicate.evaluate(item)) {
                      outputCollection.add(item);
                  }
              }
          }
      }
  
      @SuppressWarnings("rawtypes")
      public static boolean isEmpty(Collection coll) {
          return (coll == null || coll.isEmpty());
      }
  
      @SuppressWarnings("rawtypes")
      public static boolean isNotEmpty(Collection coll) {
          return !CollectionUtils.isEmpty(coll);
      }
  }
  