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/*
* Copyright (c) 1997, 2021 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.tools.xjc.api.impl.s2j;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import javax.xml.XMLConstants;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.validation.SchemaFactory;
import com.sun.codemodel.JCodeModel;
import com.sun.istack.NotNull;
import com.sun.istack.SAXParseException2;
import com.sun.tools.xjc.ErrorReceiver;
import com.sun.tools.xjc.ModelLoader;
import com.sun.tools.xjc.Options;
import com.sun.tools.xjc.api.ClassNameAllocator;
import com.sun.tools.xjc.api.ErrorListener;
import com.sun.tools.xjc.api.SchemaCompiler;
import com.sun.tools.xjc.api.SpecVersion;
import com.sun.tools.xjc.model.Model;
import com.sun.tools.xjc.outline.Outline;
import com.sun.tools.xjc.reader.internalizer.DOMForest;
import com.sun.tools.xjc.reader.internalizer.SCDBasedBindingSet;
import com.sun.tools.xjc.reader.xmlschema.parser.LSInputSAXWrapper;
import com.sun.tools.xjc.reader.xmlschema.parser.XMLSchemaInternalizationLogic;
import org.glassfish.jaxb.core.unmarshaller.DOMScanner;
import org.glassfish.jaxb.core.v2.util.XmlFactory;
import com.sun.xml.xsom.XSSchemaSet;
import java.nio.file.Files;
import java.nio.file.Paths;
import org.w3c.dom.Element;
import org.w3c.dom.ls.LSInput;
import org.w3c.dom.ls.LSResourceResolver;
import org.xml.sax.ContentHandler;
import org.xml.sax.EntityResolver;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.helpers.LocatorImpl;
/**
* {@link SchemaCompiler} implementation.
*
* This class builds a {@link DOMForest} until the {@link #bind()} method,
* then this method does the rest of the hard work.
*
* @see ModelLoader
*
* @author
* Kohsuke Kawaguchi ([email protected])
*/
public final class SchemaCompilerImpl extends ErrorReceiver implements SchemaCompiler {
/**
* User-specified error receiver.
* This field can be null, in which case errors need to be discarded.
*/
private ErrorListener errorListener;
protected final Options opts = new Options();
protected @NotNull DOMForest forest;
/**
* Set to true once an error is found.
*/
private boolean hadError;
public SchemaCompilerImpl() {
opts.compatibilityMode = Options.EXTENSION;
resetSchema();
if(System.getProperty("xjc-api.test")!=null) {
opts.debugMode = true;
opts.verbose = true;
}
}
@NotNull
public Options getOptions() {
return opts;
}
public ContentHandler getParserHandler( String systemId ) {
return forest.getParserHandler(systemId,true);
}
public void parseSchema( String systemId, Element element ) {
checkAbsoluteness(systemId);
try {
DOMScanner scanner = new DOMScanner();
// use a locator that sets the system ID correctly
// so that we can resolve relative URLs in most of the case.
// it still doesn't handle xml:base and XInclude and all those things
// correctly. There's just no way to make all those things work with DOM!
LocatorImpl loc = new LocatorImpl();
loc.setSystemId(systemId);
scanner.setLocator(loc);
scanner.setContentHandler(getParserHandler(systemId));
scanner.scan(element);
} catch (SAXException e) {
// since parsing DOM shouldn't cause a SAX exception
// and our handler will never throw it, it's not clear
// if this will ever happen.
fatalError(new SAXParseException2(
e.getMessage(), null, systemId,-1,-1, e));
}
}
public void parseSchema(InputSource source) {
checkAbsoluteness(source.getSystemId());
try {
forest.parse(source,true);
} catch (SAXException e) {
// parsers are required to report an error to ErrorHandler,
// so we should never see this error.
e.printStackTrace();
}
}
public void setTargetVersion(SpecVersion version) {
if(version==null)
version = SpecVersion.LATEST;
opts.target = version;
}
public void parseSchema(String systemId, XMLStreamReader reader) throws XMLStreamException {
checkAbsoluteness(systemId);
forest.parse(systemId,reader,true);
}
/**
* Checks if the system ID is absolute.
*/
@SuppressWarnings("ResultOfObjectAllocationIgnored")
private void checkAbsoluteness(String systemId) {
// we need to be able to handle system IDs like "urn:foo", which java.net.URL can't process,
// but OTOH we also need to be able to process system IDs like "file://a b c/def.xsd",
// which java.net.URI can't process. So for now, let's fail only if both of them fail.
// eventually we need a proper URI class that works for us.
try {
new URL(systemId);
} catch( MalformedURLException mue) {
try {
new URI(systemId);
} catch (URISyntaxException e ) {
throw new IllegalArgumentException("system ID '"+systemId+"' isn't absolute",e);
}
}
}
public void setEntityResolver(EntityResolver entityResolver) {
forest.setEntityResolver(entityResolver);
opts.entityResolver = entityResolver;
}
public void setDefaultPackageName(String packageName) {
opts.defaultPackage2 = packageName;
}
public void forcePackageName(String packageName) {
opts.defaultPackage = packageName;
}
public void setClassNameAllocator(ClassNameAllocator allocator) {
opts.classNameAllocator = allocator;
}
public void resetSchema() {
forest = new DOMForest(new XMLSchemaInternalizationLogic(), opts);
forest.setErrorHandler(this);
forest.setEntityResolver(opts.entityResolver);
}
public JAXBModelImpl bind() {
// this has been problematic. turn it off.
// if(!forest.checkSchemaCorrectness(this))
// return null;
// parse all the binding files given via XJC -b options.
// this also takes care of the binding files given in the -episode option.
for (InputSource is : opts.getBindFiles())
parseSchema(is);
// internalization
SCDBasedBindingSet scdBasedBindingSet = forest.transform(opts.isExtensionMode());
if (!NO_CORRECTNESS_CHECK) {
// correctness check
SchemaFactory sf = XmlFactory.createSchemaFactory(XMLConstants.W3C_XML_SCHEMA_NS_URI, opts.disableXmlSecurity);
// fix for https://jaxb.dev.java.net/issues/show_bug.cgi?id=795
// taken from SchemaConstraintChecker, TODO XXX FIXME UGLY
if (opts.entityResolver != null) {
sf.setResourceResolver(new LSResourceResolver() {
public LSInput resolveResource(String type, String namespaceURI, String publicId, String systemId, String baseURI) {
try {
// XSOM passes the namespace URI to the publicID parameter.
// we do the same here .
InputSource is = opts.entityResolver.resolveEntity(namespaceURI, systemId == null ? "" : systemId);
return isExists(is) ? new LSInputSAXWrapper(is) : null;
} catch (SAXException e) {
// TODO: is this sufficient?
return null;
} catch (IOException e) {
// TODO: is this sufficient?
return null;
}
}
});
}
sf.setErrorHandler(new DowngradingErrorHandler(this));
forest.weakSchemaCorrectnessCheck(sf);
if (hadError)
return null; // error in the correctness check. abort now
}
JCodeModel codeModel = new JCodeModel();
ModelLoader gl = new ModelLoader(opts,codeModel,this);
try {
XSSchemaSet result = gl.createXSOM(forest, scdBasedBindingSet);
if(result==null)
return null;
// we need info about each field, so we go ahead and generate the
// skeleton at this point.
// REVISIT: we should separate FieldRenderer and FieldAccessor
// so that accessors can be used before we build the code.
Model model = gl.annotateXMLSchema(result);
if(model==null) return null;
if(hadError) return null; // if we have any error by now, abort
model.setPackageLevelAnnotations(opts.packageLevelAnnotations);
Outline context = model.generateCode(opts,this);
if(context==null) return null;
if(hadError) return null;
return new JAXBModelImpl(context);
} catch( SAXException e ) {
// since XSOM uses our parser that scans DOM,
// no parser error is possible.
// all the other errors will be directed to ErrorReceiver
// before it's thrown, so when the exception is thrown
// the error should have already been reported.
// thus ignore.
return null;
}
}
public void setErrorListener(ErrorListener errorListener) {
this.errorListener = errorListener;
}
public void info(SAXParseException exception) {
if(errorListener!=null)
errorListener.info(exception);
}
public void warning(SAXParseException exception) {
if(errorListener!=null)
errorListener.warning(exception);
}
public void error(SAXParseException exception) {
hadError = true;
if(errorListener!=null)
errorListener.error(exception);
}
public void fatalError(SAXParseException exception) {
hadError = true;
if(errorListener!=null)
errorListener.fatalError(exception);
}
private static boolean isExists(InputSource is) {
if (is == null) {
return false;
}
try {
URI uri = new URI(is.getSystemId());
if ("file".equals(uri.getScheme())) {
return Files.exists(Paths.get(uri));
}
} catch (URISyntaxException ex) {
//ignore, let it be handled by parser as is
}
return true;
}
/**
* We use JAXP 1.3 to do a schema correctness check, but we know
* it doesn't always work. So in case some people hit the problem,
* this switch is here so that they can turn it off as a workaround.
*/
private static boolean NO_CORRECTNESS_CHECK = false;
static {
try {
NO_CORRECTNESS_CHECK = Boolean.getBoolean(SchemaCompilerImpl.class.getName()+".noCorrectnessCheck");
} catch( Throwable t) {
// ignore
}
}
}
