org.glassfish.jaxb.runtime.v2.runtime.unmarshaller.ValidatingUnmarshaller Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2020 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 org.glassfish.jaxb.runtime.v2.runtime.unmarshaller;
import org.glassfish.jaxb.runtime.v2.util.FatalAdapter;
import org.glassfish.jaxb.core.v2.runtime.unmarshaller.LocatorEx;
import org.xml.sax.SAXException;
import javax.xml.namespace.NamespaceContext;
import javax.xml.validation.Schema;
import javax.xml.validation.ValidatorHandler;
/**
* {@link XmlVisitor} decorator that validates the events by using JAXP validation API.
*
* @author Kohsuke Kawaguchi
*/
final class ValidatingUnmarshaller implements XmlVisitor, XmlVisitor.TextPredictor {
private final XmlVisitor next;
private final ValidatorHandler validator;
private NamespaceContext nsContext = null;
/**
* {@link TextPredictor} of the next {@link XmlVisitor}.
*/
private final TextPredictor predictor;
private char[] buf = new char[256];
/**
* Creates a new instance of ValidatingUnmarshaller.
*/
public ValidatingUnmarshaller( Schema schema, XmlVisitor next ) {
this.validator = schema.newValidatorHandler();
this.next = next;
this.predictor = next.getPredictor();
// if the user bothers to use a validator, make validation errors fatal
// so that it will abort unmarshalling.
validator.setErrorHandler(new FatalAdapter(getContext()));
}
public void startDocument(LocatorEx locator, NamespaceContext nsContext) throws SAXException {
this.nsContext = nsContext;
validator.setDocumentLocator(locator);
validator.startDocument();
next.startDocument(locator,nsContext);
}
public void endDocument() throws SAXException {
this.nsContext = null;
validator.endDocument();
next.endDocument();
}
public void startElement(TagName tagName) throws SAXException {
if(nsContext != null) {
String tagNamePrefix = tagName.getPrefix().intern();
if(tagNamePrefix != "") {
validator.startPrefixMapping(tagNamePrefix, nsContext.getNamespaceURI(tagNamePrefix));
}
}
validator.startElement(tagName.uri,tagName.local,tagName.getQname(),tagName.atts);
next.startElement(tagName);
}
public void endElement(TagName tagName ) throws SAXException {
validator.endElement(tagName.uri,tagName.local,tagName.getQname());
next.endElement(tagName);
}
public void startPrefixMapping(String prefix, String nsUri) throws SAXException {
validator.startPrefixMapping(prefix,nsUri);
next.startPrefixMapping(prefix,nsUri);
}
public void endPrefixMapping(String prefix) throws SAXException {
validator.endPrefixMapping(prefix);
next.endPrefixMapping(prefix);
}
public void text( CharSequence pcdata ) throws SAXException {
int len = pcdata.length();
if(buf.length