/*
    * Copyright 2011 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.xds.core.validate;
  
  import static org.openehealth.ipf.commons.ihe.xds.core.validate.ValidationMessage.HOME_COMMUNITY_ID_MUST_BE_SPECIFIED;
  import static org.openehealth.ipf.commons.ihe.xds.core.validate.ValidationMessage.INVALID_OID;
  import static org.openehealth.ipf.commons.ihe.xds.core.validate.ValidatorAssertions.metaDataAssert;
  
  /**
   * Validates a homeCommunityId attribute.
   * @author Dmytro Rud
   */
  public class HomeCommunityIdValidator implements ValueValidator {
      private final boolean required;
  
      /**
       * Constructor.
       * @param required
       *      <code>true</code> when an exception should be thrown when
       *      the homeCommunityId attribute is not present.
       */
      public HomeCommunityIdValidator(boolean required) {
          this.required = required;
      }
  
      @Override
      public void validate(String homeCommunityId) throws XDSMetaDataException {
          if (required) {
              metaDataAssert((homeCommunityId != null) && (! homeCommunityId.isEmpty()),
                      HOME_COMMUNITY_ID_MUST_BE_SPECIFIED);
          }
          if (homeCommunityId != null) {
              metaDataAssert(homeCommunityId.startsWith("urn:oid:"), INVALID_OID, homeCommunityId);
              new OIDValidator().validate(homeCommunityId.substring(8));
          }
      }
  }