com.sun.xml.ws.security.opt.impl.util.XMLStreamReaderFactory Maven / Gradle / Ivy
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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.xml.ws.security.opt.impl.util;
import javax.xml.stream.StreamFilter;
import org.xml.sax.InputSource;
import jakarta.xml.ws.WebServiceException;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamReader;
import java.io.InputStream;
import java.io.Reader;
import java.net.URL;
/**
* A factory to create XML and FI parsers.
*
* @author [email protected]
*/
public class XMLStreamReaderFactory {
/**
* StAX input factory shared by all threads.
*/
static final XMLInputFactory xmlInputFactory;
/**
* FI stream reader for each thread.
*/
static final ThreadLocal fiStreamReader = new ThreadLocal();
/**
* Zephyr's stream reader for each thread.
*/
static final ThreadLocal xmlStreamReader = new ThreadLocal();
static {
// Use StAX pluggability layer to get factory instance
xmlInputFactory = XMLInputFactory.newInstance();
xmlInputFactory.setProperty(XMLInputFactory.IS_NAMESPACE_AWARE, Boolean.TRUE);
try {
// Turn OFF internal factory caching in Zephyr -- not thread safe
xmlInputFactory.setProperty("reuse-instance", Boolean.FALSE);
} catch (IllegalArgumentException e) {
// falls through
}
}
// -- XML ------------------------------------------------------------
/**
* Returns a fresh StAX parser created from an InputSource. Use this
* method when concurrent instances are needed within a single thread.
*
* TODO: Reject DTDs?
*/
public static XMLStreamReader createFreshXMLStreamReader(InputSource source,
boolean rejectDTDs) {
try {
synchronized (xmlInputFactory) {
// Char stream available?
if (source.getCharacterStream() != null) {
return xmlInputFactory.createXMLStreamReader(
source.getSystemId(), source.getCharacterStream());
}
// Byte stream available?
if (source.getByteStream() != null) {
return xmlInputFactory.createXMLStreamReader(
source.getSystemId(), source.getByteStream());
}
// Otherwise, open URI
return xmlInputFactory.createXMLStreamReader(source.getSystemId(),
new URL(source.getSystemId()).openStream());
}
} catch (Exception e) {
throw new WebServiceException("stax.cantCreate",e);
}
}
/**
* This factory method would be used for example when caller wants to close the stream.
*/
public static XMLStreamReader createFreshXMLStreamReader(String systemId, InputStream stream) {
try {
synchronized (xmlInputFactory) {
// Otherwise, open URI
return xmlInputFactory.createXMLStreamReader(systemId,
stream);
}
} catch (Exception e) {
throw new WebServiceException("stax.cantCreate",e);
}
}
/**
* This factory method would be used for example when caller wants to close the stream.
*/
public static XMLStreamReader createFreshXMLStreamReader(String systemId, Reader reader) {
try {
synchronized (xmlInputFactory) {
// Otherwise, open URI
return xmlInputFactory.createXMLStreamReader(systemId,
reader);
}
} catch (Exception e) {
throw new WebServiceException("stax.cantCreate",e);
}
}
public static XMLStreamReader createFilteredXMLStreamReader(XMLStreamReader reader,StreamFilter filter){
try {
synchronized (xmlInputFactory) {
// Otherwise, open URI
return xmlInputFactory.createFilteredReader(reader,filter) ;
}
} catch (Exception e) {
throw new WebServiceException("stax.cantCreate",e);
}
}
}