Java tutorial
/* ************************************************************************ ******************* CANADIAN ASTRONOMY DATA CENTRE ******************* ************** CENTRE CANADIEN DE DONNES ASTRONOMIQUES ************** * * (c) 2016. (c) 2016. * Government of Canada Gouvernement du Canada * National Research Council Conseil national de recherches * Ottawa, Canada, K1A 0R6 Ottawa, Canada, K1A 0R6 * All rights reserved Tous droits rservs * * NRC disclaims any warranties, Le CNRC dnie toute garantie * expressed, implied, or nonce, implicite ou lgale, * statutory, of any kind with de quelque nature que ce * respect to the software, soit, concernant le logiciel, * including without limitation y compris sans restriction * any warranty of merchantability toute garantie de valeur * or fitness for a particular marchande ou de pertinence * purpose. NRC shall not be pour un usage particulier. * liable in any event for any Le CNRC ne pourra en aucun cas * damages, whether direct or tre tenu responsable de tout * indirect, special or general, dommage, direct ou indirect, * consequential or incidental, particulier ou gnral, * arising from the use of the accessoire ou fortuit, rsultant * software. Neither the name de l'utilisation du logiciel. Ni * of the National Research le nom du Conseil National de * Council of Canada nor the Recherches du Canada ni les noms * names of its contributors may de ses participants ne peuvent * be used to endorse or promote tre utiliss pour approuver ou * products derived from this promouvoir les produits drivs * software without specific prior de ce logiciel sans autorisation * written permission. pralable et particulire * par crit. * * This file is part of the Ce fichier fait partie du projet * OpenCADC project. OpenCADC. * * OpenCADC is free software: OpenCADC est un logiciel libre ; * you can redistribute it and/or vous pouvez le redistribuer ou le * modify it under the terms of modifier suivant les termes de * the GNU Affero General Public la GNU Affero General Public * License as published by the License? telle que publie * Free Software Foundation, par la Free Software Foundation * either version 3 of the : soit la version 3 de cette * License, or (at your option) licence, soit ( votre gr) * any later version. toute version ultrieure. * * OpenCADC is distributed in the OpenCADC est distribu * hope that it will be useful, dans lespoir quil vous * but WITHOUT ANY WARRANTY; sera utile, mais SANS AUCUNE * without even the implied GARANTIE : sans mme la garantie * warranty of MERCHANTABILITY implicite de COMMERCIALISABILIT * or FITNESS FOR A PARTICULAR ni dADQUATION UN OBJECTIF * PURPOSE. See the GNU Affero PARTICULIER. Consultez la Licence * General Public License for Gnrale Publique GNU Affero * more details. pour plus de dtails. * * You should have received Vous devriez avoir reu une * a copy of the GNU Affero copie de la Licence Gnrale * General Public License along Publique GNU Affero avec * with OpenCADC. If not, see OpenCADC ; si ce nest * <http://www.gnu.org/licenses/>. pas le cas, consultez : * <http://www.gnu.org/licenses/>. * ************************************************************************ */ package ca.nrc.cadc.vodml; import ca.nrc.cadc.xml.W3CConstants; import ca.nrc.cadc.xml.XmlUtil; import com.helger.schematron.ISchematronResource; import com.helger.schematron.xslt.SchematronResourceSCH; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.Reader; import java.util.ArrayList; import java.util.List; import java.util.Map; import java.util.TreeMap; import javax.xml.transform.stream.StreamSource; import org.apache.log4j.Logger; import org.jdom2.Document; import org.jdom2.JDOMException; import org.jdom2.input.SAXBuilder; import org.oclc.purl.dsdl.svrl.FailedAssert; import org.oclc.purl.dsdl.svrl.SchematronOutputType; /** * Initial prototype VO-DML data model reader. This currently returns an * org.jdom2.Document object aso it is only good for validation. Once we have * access to or write some classes that implement the VO-DML meta model we can * return an instance of VODataModel instead. * * @author pdowler */ public class VOModelReader { private static final Logger log = Logger.getLogger(VOModelReader.class); private static final String VODML_NS = "http://www.ivoa.net/xml/VODML/v1"; private static final String VODML_SCHEMA = "vo-dml-v1.0.xsd"; private static final String VODML_SCHEMATRON = "vo-dml-v1.0.sch.xml"; private Map<String, String> schemaMap; private boolean schematronVal; private boolean logWarnings; public VOModelReader() { this(true, true, false); } public VOModelReader(boolean schemaVal, boolean schematronVal, boolean logWarnings) { if (schemaVal) { schemaMap = new TreeMap<>(); String vodmlSchemaLoc = XmlUtil.getResourceUrlString(VODML_SCHEMA, VOModelReader.class); log.debug("schemaMap: " + VODML_NS + " -> " + vodmlSchemaLoc); schemaMap.put(VODML_NS, vodmlSchemaLoc); String w3cSchemaURL = XmlUtil.getResourceUrlString(W3CConstants.XSI_SCHEMA, VOModelReader.class); log.debug("schemaMap: " + W3CConstants.XSI_SCHEMA + " -> " + w3cSchemaURL); schemaMap.put(W3CConstants.XSI_NS_URI.toString(), w3cSchemaURL); } this.schematronVal = schematronVal; this.logWarnings = logWarnings; } public Document read(InputStream in) throws JDOMException, IOException, SchematronValidationException { InputStreamReader isr = new InputStreamReader(in); return read(isr); } public Document read(Reader in) throws JDOMException, IOException, SchematronValidationException { SAXBuilder builder = XmlUtil.createBuilder(schemaMap); Document doc = builder.build(in); if (schematronVal) { validateSchematron(doc); } return doc; } private void validateSchematron(Document doc) throws IOException, SchematronValidationException { ByteArrayOutputStream bos = new ByteArrayOutputStream(); VOModelWriter w = new VOModelWriter(false); w.write(doc, bos); byte[] buf = bos.toByteArray(); ISchematronResource sch = SchematronResourceSCH.fromClassPath(VODML_SCHEMATRON); if (sch == null) { throw new RuntimeException("failed to load " + VODML_SCHEMATRON); } if (!sch.isValidSchematron()) { throw new IllegalArgumentException("VO-DML schematron is invalid: " + VODML_SCHEMATRON); } SchematronOutputType result; try { result = sch.applySchematronValidationToSVRL(new StreamSource(new ByteArrayInputStream(buf))); } catch (Exception ex) { throw new RuntimeException("failed to validate", ex); } if (result == null) { throw new RuntimeException("failed to validate: no result from schematron validator (unexpected)"); } int num = result.getTextCount(); for (int i = 0; i < num; i++) { String o = result.getTextAtIndex(i); log.debug("[" + i + "] " + o); } num = result.getActivePatternAndFiredRuleAndFailedAssertCount(); List<String> emsgs = new ArrayList<>(); for (int i = 0; i < num; i++) { Object o = result.getActivePatternAndFiredRuleAndFailedAssertAtIndex(i); log.debug("[" + i + "," + o.getClass().getName() + "] " + o); if (o instanceof FailedAssert) { FailedAssert fa = (FailedAssert) o; if ("error".equalsIgnoreCase(fa.getFlag())) { emsgs.add("[" + emsgs.size() + 1 + "] " + o); } else if (logWarnings && "warning".equalsIgnoreCase(fa.getFlag())) { log.warn(fa.getText()); } } } if (!emsgs.isEmpty()) { throw new SchematronValidationException(emsgs.size(), emsgs); } } }