001/*
002 * #%L
003 * HAPI FHIR - Core Library
004 * %%
005 * Copyright (C) 2014 - 2025 Smile CDR, Inc.
006 * %%
007 * Licensed under the Apache License, Version 2.0 (the "License");
008 * you may not use this file except in compliance with the License.
009 * You may obtain a copy of the License at
010 *
011 *      http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 * #L%
019 */
020package ca.uhn.fhir.validation.schematron;
021
022import ca.uhn.fhir.context.FhirContext;
023import ca.uhn.fhir.i18n.Msg;
024import ca.uhn.fhir.util.CoverageIgnore;
025import ca.uhn.fhir.validation.FhirValidator;
026import ca.uhn.fhir.validation.IValidatorModule;
027
028import java.lang.reflect.Constructor;
029
030public class SchematronProvider {
031
032        private static final String I18N_KEY_NO_PH_WARNING = FhirValidator.class.getName() + ".noPhWarningOnStartup";
033        private static final org.slf4j.Logger ourLog = org.slf4j.LoggerFactory.getLogger(FhirValidator.class);
034
035        @CoverageIgnore
036        public static boolean isSchematronAvailable(FhirContext theFhirContext) {
037                try {
038                        Class.forName("com.helger.schematron.ISchematronResource");
039                        return true;
040                } catch (ClassNotFoundException e) {
041                        ourLog.info(theFhirContext.getLocalizer().getMessage(I18N_KEY_NO_PH_WARNING));
042                        return false;
043                }
044        }
045
046        @SuppressWarnings("unchecked")
047        @CoverageIgnore
048        public static Class<? extends IValidatorModule> getSchematronValidatorClass() {
049                try {
050                        return (Class<? extends IValidatorModule>)
051                                        Class.forName("ca.uhn.fhir.validation.schematron.SchematronBaseValidator");
052                } catch (ClassNotFoundException e) {
053                        throw new IllegalStateException(Msg.code(1973) + "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(Msg.code(1974) + "Cannot construct schematron validator ", e);
065                }
066        }
067}