Java tutorial
/** * This Source Code Form is subject to the terms of the Mozilla Public License, * v. 2.0. If a copy of the MPL was not distributed with this file, You can * obtain one at http://mozilla.org/MPL/2.0/. OpenMRS is also distributed under * the terms of the Healthcare Disclaimer located at http://openmrs.org/license. * * Copyright (C) OpenMRS Inc. OpenMRS is a registered trademark and the OpenMRS * graphic logo is a trademark of OpenMRS Inc. */ package org.openmrs.module.radiology.report.template; import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.util.HashSet; import java.util.List; import java.util.Set; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.ParserConfigurationException; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; import org.jsoup.select.Elements; import org.openmrs.ConceptReferenceTerm; import org.openmrs.ConceptSource; import org.openmrs.api.APIException; import org.openmrs.api.ConceptService; import org.openmrs.api.context.Context; import org.w3c.dom.NodeList; import org.xml.sax.SAXException; /** * A parser to parse MRRT report templates and and return an MrrtReportTemplate object. */ class DefaultMrrtReportTemplateFileParser implements MrrtReportTemplateFileParser { private static final Log log = LogFactory.getLog(DefaultMrrtReportTemplateFileParser.class); private static final String DCTERMS_TITLE = "dcterms.title"; private static final String DCTERMS_DESCRIPTION = "dcterms.description"; private static final String DCTERMS_IDENTIFIER = "dcterms.identifier"; private static final String DCTERMS_TYPE = "dcterms.type"; private static final String DCTERMS_LANGUAGE = "dcterms.language"; private static final String DCTERMS_PUBLISHER = "dcterms.publisher"; private static final String DCTERMS_RIGHTS = "dcterms.rights"; private static final String DCTERMS_LICENSE = "dcterms.license"; private static final String DCTERMS_DATE = "dcterms.date"; private static final String DCTERMS_CREATOR = "dcterms.creator"; private MrrtReportTemplateValidator validator; public void setValidator(MrrtReportTemplateValidator validator) { this.validator = validator; } /** * @see MrrtReportTemplateFileParser#parse(String) */ @Override public MrrtReportTemplate parse(String mrrtTemplate) throws IOException { validator.validate(mrrtTemplate); final Document doc = Jsoup.parse(mrrtTemplate, ""); final MrrtReportTemplate result = new MrrtReportTemplate(); initializeTemplate(result, doc); try { addTermsToTemplate(result, doc.getElementsByTag("script").get(0).toString()); } catch (ParserConfigurationException | SAXException e) { throw new APIException("radiology.report.template.parser.error", null, e); } return result; } private final void initializeTemplate(MrrtReportTemplate template, Document doc) { final Elements metaTags = doc.getElementsByTag("meta"); template.setPath(doc.baseUri()); template.setCharset(metaTags.attr("charset")); for (Element metaTag : metaTags) { final String name = metaTag.attr("name"); final String content = metaTag.attr("content"); switch (name) { case DCTERMS_TITLE: template.setDcTermsTitle(content); break; case DCTERMS_DESCRIPTION: template.setDcTermsDescription(content); break; case DCTERMS_IDENTIFIER: template.setDcTermsIdentifier(content); break; case DCTERMS_TYPE: template.setDcTermsType(content); break; case DCTERMS_LANGUAGE: template.setDcTermsLanguage(content); break; case DCTERMS_PUBLISHER: template.setDcTermsPublisher(content); break; case DCTERMS_RIGHTS: template.setDcTermsRights(content); break; case DCTERMS_LICENSE: template.setDcTermsLicense(content); break; case DCTERMS_DATE: template.setDcTermsDate(content); break; case DCTERMS_CREATOR: template.setDcTermsCreator(content); break; default: log.debug("Unhandled meta tag " + name); } } } private final void addTermsToTemplate(MrrtReportTemplate template, String script) throws ParserConfigurationException, SAXException, IOException { final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); final DocumentBuilder builder = factory.newDocumentBuilder(); try (InputStream in = new ByteArrayInputStream(script.getBytes())) { final org.w3c.dom.Document scriptPartAsDocument = builder.parse(in); scriptPartAsDocument.getDocumentElement().normalize(); final NodeList terms = scriptPartAsDocument.getElementsByTagName("term"); final ConceptService conceptService = Context.getService(ConceptService.class); final Set<ConceptReferenceTerm> referenceTerms = new HashSet<>(); for (int i = 0; i < terms.getLength(); i++) { final org.w3c.dom.Element termElement = (org.w3c.dom.Element) terms.item(i); final org.w3c.dom.Element codeElement = (org.w3c.dom.Element) termElement .getElementsByTagName("code").item(0); final ConceptSource conceptSource = getConceptSourceByName(codeElement.getAttribute("scheme"), conceptService); if (conceptSource != null) { final ConceptReferenceTerm referenceTerm = conceptService .getConceptReferenceTermByCode(codeElement.getAttribute("value"), conceptSource); if (referenceTerm != null) { referenceTerms.add(referenceTerm); } } } if (!referenceTerms.isEmpty()) { template.setTerms(referenceTerms); } } } private final ConceptSource getConceptSourceByName(String name, ConceptService conceptService) { final List<ConceptSource> conceptSources = conceptService.getAllConceptSources(false); for (ConceptSource conceptSource : conceptSources) { if (conceptSource.getName().equalsIgnoreCase(name)) { return conceptSource; } } return null; } }