
001package ca.uhn.fhir.validation.schematron; 002 003/* 004 * #%L 005 * HAPI FHIR - Core Library 006 * %% 007 * Copyright (C) 2014 - 2021 Smile CDR, Inc. 008 * %% 009 * Licensed under the Apache License, Version 2.0 (the "License"); 010 * you may not use this file except in compliance with the License. 011 * You may obtain a copy of the License at 012 * 013 * http://www.apache.org/licenses/LICENSE-2.0 014 * 015 * Unless required by applicable law or agreed to in writing, software 016 * distributed under the License is distributed on an "AS IS" BASIS, 017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 018 * See the License for the specific language governing permissions and 019 * limitations under the License. 020 * #L% 021 */ 022 023import java.lang.reflect.Constructor; 024 025import ca.uhn.fhir.context.FhirContext; 026import ca.uhn.fhir.util.CoverageIgnore; 027import ca.uhn.fhir.validation.FhirValidator; 028import ca.uhn.fhir.validation.IValidatorModule; 029 030public class SchematronProvider { 031 032 033 private static final String I18N_KEY_NO_PH_WARNING = FhirValidator.class.getName() + ".noPhWarningOnStartup"; 034 private static final org.slf4j.Logger ourLog = org.slf4j.LoggerFactory.getLogger(FhirValidator.class); 035 036 @CoverageIgnore 037 public static boolean isSchematronAvailable(FhirContext theFhirContext) { 038 try { 039 Class.forName("com.helger.schematron.ISchematronResource"); 040 return true; 041 } catch (ClassNotFoundException e) { 042 ourLog.info(theFhirContext.getLocalizer().getMessage(I18N_KEY_NO_PH_WARNING)); 043 return false; 044 } 045 } 046 047 @SuppressWarnings("unchecked") 048 @CoverageIgnore 049 public static Class<? extends IValidatorModule> getSchematronValidatorClass() { 050 try { 051 return (Class<? extends IValidatorModule>) Class.forName("ca.uhn.fhir.validation.schematron.SchematronBaseValidator"); 052 } catch (ClassNotFoundException e) { 053 throw new IllegalStateException("Cannot resolve schematron validator ", e); 054 } 055 } 056 057 @CoverageIgnore 058 public static IValidatorModule getSchematronValidatorInstance(FhirContext myContext) { 059 try { 060 Class<? extends IValidatorModule> cls = getSchematronValidatorClass(); 061 Constructor<? extends IValidatorModule> constructor = cls.getConstructor(FhirContext.class); 062 return constructor.newInstance(myContext); 063 } catch (Exception e) { 064 throw new IllegalStateException("Cannot construct schematron validator ", e); 065 } 066 } 067}