/*
    * 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 org.esigate.util;
  
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.Collections;
  import java.util.Properties;
  
  /**
   * Collection parameter.
   * 
   * @author Alexis Thaveau
   */
  public class ParameterCollection extends Parameter<Collection<String>> {
  
      public ParameterCollection(String name) {
          super(name);
      }
  
      public ParameterCollection(String name, String... defaultValue) {
          super(name, Arrays.asList(defaultValue));
      }
  
      @Override
      public Collection<String> getValue(Properties properties) {
  
          Collection<String> defaultValue = getDefaultValue();
          if (defaultValue == null) {
              defaultValue = Collections.emptyList();
          }
          return PropertiesUtil.getPropertyValue(properties, getName(), defaultValue);
  
      }
  }