| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.camel.component.schematron.processor; |
| |
| import java.io.StringWriter; |
| |
| import javax.xml.transform.Source; |
| import javax.xml.transform.Templates; |
| import javax.xml.transform.TransformerException; |
| import javax.xml.transform.sax.SAXSource; |
| import javax.xml.transform.stream.StreamResult; |
| |
| import org.xml.sax.InputSource; |
| import org.xml.sax.XMLReader; |
| |
| import org.apache.camel.component.schematron.exception.SchematronValidationException; |
| import org.apache.commons.io.IOUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * The schematoron Engine. Validates an XML for given scheamtron rules using an XSLT implementation of the Schematron |
| * Engine. |
| * <p/> |
| */ |
| public class SchematronProcessor { |
| |
| private Logger logger = LoggerFactory.getLogger(SchematronProcessor.class); |
| private XMLReader reader; |
| private Templates templates; |
| |
| /** |
| * Constructor setting the XSLT schematron templates. |
| * |
| * @param reader |
| * @param templates |
| */ |
| public SchematronProcessor(XMLReader reader, Templates templates) { |
| this.reader = reader; |
| this.templates = templates; |
| } |
| |
| /** |
| * Validates the given XML for given Rules. |
| * |
| * @param xml |
| * @return |
| */ |
| public String validate(final String xml) { |
| final Source source = new SAXSource(reader, new InputSource(IOUtils.toInputStream(xml))); |
| return validate(source); |
| } |
| |
| /** |
| * Validates the given XML for given Rules. |
| * |
| * @param source |
| * @return |
| */ |
| public String validate(Source source) { |
| try { |
| final StringWriter writer = new StringWriter(); |
| templates.newTransformer().transform(source, new StreamResult(writer)); |
| return writer.toString(); |
| } catch (TransformerException e) { |
| logger.error(e.getMessage()); |
| throw new SchematronValidationException("Failed to apply Schematron validation transform", e); |
| } |
| } |
| } |