/*
    * 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.xml;
  
  import org.openehealth.ipf.commons.core.modules.api.ValidationException;
  import org.openehealth.ipf.commons.core.modules.api.Validator;
  
  import static java.util.Objects.requireNonNull;
  import static org.openehealth.ipf.commons.xml.XmlUtils.rootElementName;
  import static org.openehealth.ipf.commons.xml.XmlUtils.source;
  
  /**
   * XSD- and Schematron-based validator for HL7 v3 messages.
   * @author Dmytro Rud
   */
  public class CombinedXmlValidator implements Validator<String, CombinedXmlValidationProfile> {
  
      private static final XsdValidator XSD_VALIDATOR = new XsdValidator(CombinedXmlValidator.class.getClassLoader());
      private static final SchematronValidator SCHEMATRON_VALIDATOR = new SchematronValidator();
  
  
      public void validate(String message, CombinedXmlValidationProfile profile) throws ValidationException {
          requireNonNull(profile, "validation profile must be not null");
          // check whether the root element name is valid
          String rootElementName = rootElementName(requireNonNull(message, "message must be not null"));
          if (! profile.isValidRootElement(rootElementName)) {
              throw new ValidationException("Invalid root element '" + rootElementName + "'");
          }
  
          // XSD validation
          String xsdPath = profile.getXsdPath(rootElementName);
          if (xsdPath != null) {
              XSD_VALIDATOR.validate(source(message), xsdPath);
          }
  
          // Schematron validation
          String schematronPath = profile.getSchematronPath(rootElementName);
          if (schematronPath != null) {
              SchematronProfile schematronProfile = new SchematronProfile(
                      schematronPath,
                      profile.getCustomSchematronParameters(rootElementName));
              SCHEMATRON_VALIDATOR.validate(source(message), schematronProfile);
          }
      }
  }