/*
    * Copyright 2009 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.definitions;
  
  import java.util.Collections;
  import java.util.Map;
  
  import ca.uhn.hl7v2.Version;
  import ca.uhn.hl7v2.parser.Parser;
  import ca.uhn.hl7v2.parser.PipeParser;
  import org.openehealth.ipf.modules.hl7.parser.CustomModelClassFactory;
  
  /**
   * Utilities to work with custom HAPI class definitions.
   *
   * @author Dmytro Rud
   */
  public final class CustomModelClassUtils {
  
      private static final String CUSTOM_EVENT_MAP_DIRECTORY = "org/openehealth/ipf/commons/ihe/hl7v2/";
  
      private CustomModelClassUtils() {
          throw new IllegalStateException("Utility class, cannot instantiate");
      }
  
      /**
       * Creates a model class factory for the given transaction and HL7 version.
       */
      public static CustomModelClassFactory createFactory(String transaction, String version) {
          String packageName = String.format("%s.%s.%s",
                  CustomModelClassUtils.class.getPackage().getName(),
                  transaction,
                  Version.versionOf(version).getPackageVersion());
          Map<String, String[]> map = Collections.singletonMap(version, new String[]{packageName});
          CustomModelClassFactory cmcf = new CustomModelClassFactory(map);
          cmcf.setEventMapDirectory(CUSTOM_EVENT_MAP_DIRECTORY);
          return cmcf;
      }
  
      /**
       * Creates a parser for the given transaction and HL7 version.
       *
       * @deprecated the correct parser should be obtained from the {@link ca.uhn.hl7v2.HapiContext}
       * that has been configured with the correct {@link ca.uhn.hl7v2.parser.ModelClassFactory}.
       */
      public static Parser createParser(String transaction, String version) {
          return new PipeParser(createFactory(transaction, version));
      }
  
  }