com.sun.xml.ws.message.stream.StreamHeader Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2018 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.message.stream;
import com.sun.istack.FinalArrayList;
import com.sun.istack.NotNull;
import com.sun.xml.stream.buffer.XMLStreamBuffer;
import com.sun.xml.stream.buffer.XMLStreamBufferSource;
import com.sun.xml.ws.api.SOAPVersion;
import com.sun.xml.ws.api.addressing.AddressingVersion;
import com.sun.xml.ws.api.addressing.WSEndpointReference;
import com.sun.xml.ws.api.message.Header;
import com.sun.xml.ws.message.AbstractHeaderImpl;
import com.sun.xml.ws.util.xml.XmlUtil;
import org.w3c.dom.Node;
import org.xml.sax.ContentHandler;
import org.xml.sax.ErrorHandler;
import org.xml.sax.SAXException;
import javax.xml.soap.SOAPException;
import javax.xml.soap.SOAPHeader;
import javax.xml.soap.SOAPMessage;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMResult;
import java.util.List;
import java.util.Set;
/**
* {@link Header} whose physical data representation is an XMLStreamBuffer.
*
* @author [email protected]
*/
public abstract class StreamHeader extends AbstractHeaderImpl {
protected final XMLStreamBuffer _mark;
protected boolean _isMustUnderstand;
/**
* Role or actor value.
*/
protected @NotNull String _role;
protected boolean _isRelay;
protected String _localName;
protected String _namespaceURI;
/**
* Keep the information about an attribute on the header element.
*
* TODO: this whole attribute handling could be done better, I think.
*/
protected static final class Attribute {
/**
* Can be empty but never null.
*/
final String nsUri;
final String localName;
final String value;
public Attribute(String nsUri, String localName, String value) {
this.nsUri = fixNull(nsUri);
this.localName = localName;
this.value = value;
}
}
/**
* The attributes on the header element.
* We expect there to be only a small number of them,
* so the use of {@link List} would be justified.
*
* Null if no attribute is present.
*/
private final FinalArrayList attributes;
/**
* Creates a {@link StreamHeader}.
*
* @param reader
* The parser pointing at the start of the mark.
* Technically this information is redundant,
* but it achieves a better performance.
* @param mark
* The start of the buffered header content.
*/
protected StreamHeader(XMLStreamReader reader, XMLStreamBuffer mark) {
assert reader!=null && mark!=null;
_mark = mark;
_localName = reader.getLocalName();
_namespaceURI = reader.getNamespaceURI();
attributes = processHeaderAttributes(reader);
}
/**
* Creates a {@link StreamHeader}.
*
* @param reader
* The parser that points to the start tag of the header.
* By the end of this method, the parser will point at
* the end tag of this element.
*/
protected StreamHeader(XMLStreamReader reader) throws XMLStreamException {
_localName = reader.getLocalName();
_namespaceURI = reader.getNamespaceURI();
attributes = processHeaderAttributes(reader);
// cache the body
_mark = XMLStreamBuffer.createNewBufferFromXMLStreamReader(reader);
}
public final boolean isIgnorable(@NotNull SOAPVersion soapVersion, @NotNull Set roles) {
// check mustUnderstand
if(!_isMustUnderstand) return true;
if (roles == null)
return true;
// now role
return !roles.contains(_role);
}
public @NotNull String getRole(@NotNull SOAPVersion soapVersion) {
assert _role!=null;
return _role;
}
public boolean isRelay() {
return _isRelay;
}
public @NotNull String getNamespaceURI() {
return _namespaceURI;
}
public @NotNull String getLocalPart() {
return _localName;
}
public String getAttribute(String nsUri, String localName) {
if(attributes!=null) {
for(int i=attributes.size()-1; i>=0; i-- ) {
Attribute a = attributes.get(i);
if(a.localName.equals(localName) && a.nsUri.equals(nsUri))
return a.value;
}
}
return null;
}
/**
* Reads the header as a {@link XMLStreamReader}
*/
public XMLStreamReader readHeader() throws XMLStreamException {
return _mark.readAsXMLStreamReader();
}
public void writeTo(XMLStreamWriter w) throws XMLStreamException {
if(_mark.getInscopeNamespaces().size() > 0)
_mark.writeToXMLStreamWriter(w,true);
else
_mark.writeToXMLStreamWriter(w);
}
public void writeTo(SOAPMessage saaj) throws SOAPException {
try {
// TODO what about in-scope namespaces
// Not very efficient consider implementing a stream buffer
// processor that produces a DOM node from the buffer.
TransformerFactory tf = XmlUtil.newTransformerFactory(true);
Transformer t = tf.newTransformer();
XMLStreamBufferSource source = new XMLStreamBufferSource(_mark);
DOMResult result = new DOMResult();
t.transform(source, result);
Node d = result.getNode();
if(d.getNodeType() == Node.DOCUMENT_NODE)
d = d.getFirstChild();
SOAPHeader header = saaj.getSOAPHeader();
if(header == null)
header = saaj.getSOAPPart().getEnvelope().addHeader();
Node node = header.getOwnerDocument().importNode(d, true);
header.appendChild(node);
} catch (Exception e) {
throw new SOAPException(e);
}
}
public void writeTo(ContentHandler contentHandler, ErrorHandler errorHandler) throws SAXException {
_mark.writeTo(contentHandler);
}
/**
* Creates an EPR without copying infoset.
*
* This is the most common implementation on which {@link Header#readAsEPR(AddressingVersion)}
* is invoked on.
*/
@Override @NotNull
public WSEndpointReference readAsEPR(AddressingVersion expected) throws XMLStreamException {
return new WSEndpointReference(_mark,expected);
}
protected abstract FinalArrayList processHeaderAttributes(XMLStreamReader reader);
/**
* Convert null to "".
*/
private static String fixNull(String s) {
if(s==null) return "";
else return s;
}
}