/*
    * Copyright 2016 the original author or authors.
    *
    * 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.openehealth.ipf.commons.ihe.hl7v2.storage;
  
  import net.sf.ehcache.Ehcache;
  import net.sf.ehcache.Element;
  import org.apache.commons.lang3.Validate;
  
  import static java.util.Objects.requireNonNull;
  
  /**
   * A storage of HL7 v2 unsolicited fragmentation accumulators.
   * @author Dmytro Rud
   */
  public class EhcacheUnsolicitedFragmentationStorage implements UnsolicitedFragmentationStorage {
  
      private final Ehcache ehcache;
  
      public EhcacheUnsolicitedFragmentationStorage(Ehcache ehcache) {
          requireNonNull(ehcache);
          this.ehcache = ehcache;
      }
  
      public void put(String key, StringBuilder accumulator) {
          Element element = new Element(key, accumulator);
          ehcache.put(element);
      }
  
      public StringBuilder getAndRemove(String key) {
          Element element = ehcache.get(key);
          if (element != null) {
              ehcache.remove(key);
              return (StringBuilder) element.getObjectValue();
          }
          return null;
      }
  }