1 /*
2 * Copyright 2017 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.openehealth.ipf.modules.hl7.validation;
17
18 import ca.uhn.hl7v2.HL7Exception;
19 import ca.uhn.hl7v2.HapiContext;
20 import ca.uhn.hl7v2.Severity;
21 import ca.uhn.hl7v2.model.Message;
22 import ca.uhn.hl7v2.validation.impl.SimpleValidationExceptionHandler;
23 import org.openehealth.ipf.commons.core.modules.api.ValidationException;
24
25 public class Validator {
26
27 /**
28 * Validates an HL7v2 message.
29 *
30 * @param msg message to be validated.
31 * @param context optional HAPI Context referencing validation rules.
32 * When <code>null</code> then the message's own context will be used instead.
33 */
34 public static void validate(Message msg, HapiContext context) {
35 HapiContext ctx = context == null ? msg.getParser().getHapiContext() : context;
36
37 // We could also write an exception handler on top of SimpleValidationExceptionHandler that
38 // encapsulates the behavior below, but that may restrict custom validation...
39 SimpleValidationExceptionHandler handler = new SimpleValidationExceptionHandler(ctx);
40 handler.setMinimumSeverityToCollect(Severity.ERROR);
41 try {
42 if (ctx.<Boolean>getMessageValidator().validate(msg, handler)) {
43 throw new ValidationException("Message validation failed", handler.getExceptions());
44 }
45 } catch (HL7Exception hl7Exception) {
46 throw new ValidationException("Message validation failed", hl7Exception);
47 }
48 }
49
50 }