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/* This file is part of the project "Hilbert II" - http://www.qedeq.org
*
* Copyright 2000-2013, Michael Meyling .
*
* "Hilbert II" is free software; you can redistribute
* it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
package org.qedeq.kernel.xml.dao;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.Reader;
import java.util.Locale;
import javax.xml.parsers.ParserConfigurationException;
import org.qedeq.base.io.SourceArea;
import org.qedeq.base.io.TextOutput;
import org.qedeq.base.trace.Trace;
import org.qedeq.kernel.bo.common.QedeqBo;
import org.qedeq.kernel.bo.module.InternalKernelServices;
import org.qedeq.kernel.bo.module.InternalServiceProcess;
import org.qedeq.kernel.bo.module.KernelQedeqBo;
import org.qedeq.kernel.bo.module.QedeqFileDao;
import org.qedeq.kernel.se.base.module.Qedeq;
import org.qedeq.kernel.se.common.ModuleContext;
import org.qedeq.kernel.se.common.ModuleDataException;
import org.qedeq.kernel.se.common.Plugin;
import org.qedeq.kernel.se.common.SourceFileExceptionList;
import org.qedeq.kernel.xml.handler.common.SaxDefaultHandler;
import org.qedeq.kernel.xml.handler.module.QedeqHandler;
import org.qedeq.kernel.xml.mapper.Context2SimpleXPath;
import org.qedeq.kernel.xml.parser.SaxParser;
import org.qedeq.kernel.xml.tracker.SimpleXPath;
import org.qedeq.kernel.xml.tracker.XPathLocationParser;
import org.xml.sax.SAXException;
import com.sun.syndication.io.XmlReader;
/**
* This class provides access methods for loading QEDEQ modules from XML files.
*
* @author Michael Meyling
*/
public class XmlQedeqFileDao implements QedeqFileDao, Plugin {
/** This class. */
private static final Class CLASS = XmlQedeqFileDao.class;
/** Internal kernel services. */
private InternalKernelServices services;
/**
* Constructor.
*/
public XmlQedeqFileDao() {
// nothing to do
}
public void setServices(final InternalKernelServices services) {
this.services = services;
}
public InternalKernelServices getServices() {
return this.services;
}
public Qedeq loadQedeq(final InternalServiceProcess process, final QedeqBo prop,
final File file) throws SourceFileExceptionList {
final String method = "loadModule";
// FIXME 20130321 m31: use process parameter!
SaxDefaultHandler handler = new SaxDefaultHandler(this);
QedeqHandler simple = new QedeqHandler(handler);
handler.setBasisDocumentHandler(simple);
SaxParser parser = null;
Locale.setDefault(Locale.US); // TODO 20101228 m31: this is a Q & D Fix for the following problem:
// maybe there exists a better solution?
//org.qedeq.kernel.common.DefaultSourceFileExceptionList
//0: http://www.qedeq.org/0_04_00/sample/qedeq_error_sample_00.xml:1:1
// 9999: A programming error occurred.;
// For org.apache.xerces.impl.msg.XMLSchemaMessages_de_DE we searched for value of
// at org.qedeq.kernel.xml.parser.SaxParser.parse(SaxParser.java:164)
// at org.qedeq.kernel.xml.parser.SaxParser.parse(SaxParser.java:236)
// at org.qedeq.kernel.xml.dao.XmlQedeqFileDao.loadQedeq(XmlQedeqFileDao.java:94)
// at org.qedeq.kernel.bo.service.DefaultInternalKernelServices.loadBufferedModule(
//DefaultInternalKernelServices.java:315)
// at org.qedeq.kernel.bo.service.DefaultInternalKernelServices.loadModule(DefaultInternalKernelServices.java:273)
// at org.qedeq.kernel.bo.service.DefaultInternalKernelServices.checkModule(DefaultInternalKernelServices.java:908)
// at org.qedeq.kernel.bo.context.KernelContext$3.checkModule(KernelContext.java:376)
// at org.qedeq.kernel.bo.context.KernelContext.checkModule(KernelContext.java:628)
// at org.qedeq.gui.se.control.CheckLogicAction$1.run(CheckLogicAction.java:66)
//Caused by: http://www.qedeq.org/0_04_00/sample/qedeq_error_sample_00.xml:1:1
// 9999: A programming error occurred.;
//For org.apache.xerces.impl.msg.XMLSchemaMessages_de_DE we searched for value of
// at org.qedeq.kernel.xml.parser.SaxParser.parse(SaxParser.java:188)
// ... 8 more
//Caused by: org.qedeq.kernel.xml.common.XmlSyntaxException: A programming error occurred.
// at org.qedeq.kernel.xml.common.XmlSyntaxException.createBySAXException(XmlSyntaxException.java:175)
// at org.qedeq.kernel.xml.parser.SaxParser.parse(SaxParser.java:187)
// ... 8 more
//Caused by: java.util.MissingResourceException:
//Can't find bundle for base name org.apache.xerces.impl.msg.XMLSchemaMessages, locale de_DE
// at org.qedeq.kernel.xml.parser.SaxParser.parse(SaxParser.java:176)
// ... 8 more
//Caused by: java.util.MissingResourceException:
//Can't find bundle for base name org.apache.xerces.impl.msg.XMLSchemaMessages, locale de_DE
// at java.util.ResourceBundle.throwMissingResourceException(Unknown Source)
// at java.util.ResourceBundle.getBundleImpl(Unknown Source)
// at java.util.ResourceBundle.getBundle(Unknown Source)
// at org.apache.xerces.impl.xs.XSMessageFormatter.formatMessage(Unknown Source)
// at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
// at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
// at org.apache.xerces.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(Unknown Source)
// at org.apache.xerces.impl.xs.XMLSchemaValidator.reportSchemaError(Unknown Source)
// at org.apache.xerces.impl.xs.XMLSchemaValidator.handleStartElement(Unknown Source)
// at org.apache.xerces.impl.xs.XMLSchemaValidator.startElement(Unknown Source)
// at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
// at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
// at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
// at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
// at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
// at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
// at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
// at org.qedeq.kernel.xml.parser.SaxParser.parse(SaxParser.java:174)
// ... 8 more
try {
parser = new SaxParser(this, handler);
} catch (SAXException e) {
Trace.fatal(CLASS, this, method, "XML Parser: Severe configuration problem.", e);
throw services.createSourceFileExceptionList(
DaoErrors.PARSER_CONFIGURATION_ERROR_CODE,
DaoErrors.PARSER_CONFIGURATION_ERROR_TEXT,
file + "", e);
} catch (ParserConfigurationException e) {
Trace.fatal(CLASS, this, method, "XML Parser: Option not recognized or supported.", e);
throw services.createSourceFileExceptionList(
DaoErrors.PARSER_CONFIGURATION_OPTION_ERROR_CODE,
DaoErrors.PARSER_CONFIGURATION_OPTION_ERROR_TEXT,
file + "", e);
}
try {
parser.parse(file, prop.getUrl());
} catch (SourceFileExceptionList e) {
Trace.trace(CLASS, this, method, e);
throw e;
}
return simple.getQedeq();
}
public void saveQedeq(final InternalServiceProcess process, final KernelQedeqBo prop,
final File localFile) throws SourceFileExceptionList, IOException {
final OutputStream outputStream = new FileOutputStream(localFile);
final TextOutput printer = new TextOutput(localFile.getName(), outputStream, "UTF-8");
Qedeq2Xml.print(process, this, prop, printer);
}
public SourceArea createSourceArea(final Qedeq qedeq, final ModuleContext context) {
// copy constructor
final String method = "createSourceArea(Qedeq, ModuleContext)";
if (context == null) {
return null;
}
if (qedeq == null) {
return new SourceArea(context.getModuleLocation().getUrl());
}
ModuleContext ctext = new ModuleContext(context);
final SimpleXPath xpath;
try {
xpath = Context2SimpleXPath.getXPath(ctext, qedeq);
} catch (ModuleDataException e) {
Trace.fatal(CLASS, method, "not found: \"" + ctext + "\"", e);
if (Boolean.TRUE.toString().equalsIgnoreCase(
System.getProperty("qedeq.test.xmlLocationFailures"))) {
throw new RuntimeException(e);
}
return new SourceArea(ctext.getModuleLocation().getUrl());
}
final File local = services.getLocalFilePath(ctext.getModuleLocation());
return XPathLocationParser.findSourceArea(ctext.getModuleLocation().getUrl(), xpath,
ctext.getStartDelta(), ctext.getEndDelta(), local);
}
public Reader getModuleReader(final KernelQedeqBo bo)
throws IOException {
return new XmlReader(services.getLocalFilePath(bo.getModuleAddress()));
}
public String getServiceId() {
return CLASS.getName();
}
public String getServiceAction() {
return "XML Worker";
}
public String getServiceDescription() {
return "can read and write XML QEDEQ modules";
}
}
