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PayloadRootUtils improvements

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This commit is contained in:
Arjen Poutsma
2010-09-21 13:51:09 +00:00
parent efb3f194cb
commit 1eb3a2e4b6
2 changed files with 97 additions and 33 deletions
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113
core/src/main/java/org/springframework/ws/server/endpoint/support/PayloadRootUtils.java
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@@ -16,22 +16,27 @@
package org.springframework.ws.server.endpoint.support;
import java.io.InputStream;
import java.io.Reader;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.events.XMLEvent;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMResult;
import javax.xml.transform.dom.DOMSource;
import org.springframework.util.xml.StaxUtils;
import org.springframework.xml.namespace.QNameUtils;
import org.springframework.xml.transform.TransformerHelper;
import org.springframework.xml.transform.TraxUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.xml.sax.InputSource;
import org.xml.sax.XMLReader;
/**
* Helper class for determining the root qualified name of a Web Service payload.
@@ -39,11 +44,9 @@ import org.w3c.dom.Node;
* @author Arjen Poutsma
* @since 1.0.0
*/
@SuppressWarnings("Since15")
public abstract class PayloadRootUtils {
private PayloadRootUtils() {
}
/**
@@ -55,43 +58,91 @@ public abstract class PayloadRootUtils {
*/
public static QName getPayloadRootQName(Source source, TransformerFactory transformerFactory)
throws TransformerException {
return getPayloadRootQName(source, new TransformerHelper(transformerFactory));
}
public static QName getPayloadRootQName(Source source, TransformerHelper transformerHelper)
throws TransformerException {
if (source == null) {
return null;
}
else if (source instanceof DOMSource) {
DOMSource domSource = (DOMSource) source;
Node node = domSource.getNode();
if (node.getNodeType() == Node.ELEMENT_NODE) {
return QNameUtils.getQNameForNode(node);
try {
PayloadRootSourceCallback callback = new PayloadRootSourceCallback();
TraxUtils.doWithSource(source, callback);
if (callback.result != null) {
return callback.result;
}
else if (node.getNodeType() == Node.DOCUMENT_NODE) {
Document document = (Document) node;
else {
// we have no other option than to transform
DOMResult domResult = new DOMResult();
transformerHelper.transform(source, domResult);
Document document = (Document) domResult.getNode();
return QNameUtils.getQNameForNode(document.getDocumentElement());
}
}
else if (StaxUtils.isStaxSource(source)) {
XMLStreamReader streamReader = StaxUtils.getXMLStreamReader(source);
if (streamReader != null) {
if (streamReader.getEventType() == XMLStreamConstants.START_DOCUMENT) {
try {
streamReader.nextTag();
}
catch (XMLStreamException ex) {
throw new IllegalStateException("Could not read next tag: " + ex.getMessage(), ex);
}
catch (TransformerException ex) {
throw ex;
}
catch (Exception ex) {
return null;
}
}
private static class PayloadRootSourceCallback implements TraxUtils.SourceCallback {
private QName result;
public void domSource(Node node) throws Exception {
if (node.getNodeType() == Node.ELEMENT_NODE) {
result = QNameUtils.getQNameForNode(node);
}
else if (node.getNodeType() == Node.DOCUMENT_NODE) {
Document document = (Document) node;
result = QNameUtils.getQNameForNode(document.getDocumentElement());
}
}
public void staxSource(XMLEventReader eventReader) throws Exception {
XMLEvent event = eventReader.peek();
if (event != null && event.isStartDocument()) {
event = eventReader.nextTag();
}
if (event != null) {
if (event.isStartElement()) {
result = event.asStartElement().getName();
}
if (streamReader.getEventType() == XMLStreamConstants.START_ELEMENT ||
streamReader.getEventType() == XMLStreamConstants.END_ELEMENT) {
return streamReader.getName();
else if (event.isEndElement()) {
result = event.asEndElement().getName();
}
}
}
// we have no other option than to transform
Transformer transformer = transformerFactory.newTransformer();
DOMResult domResult = new DOMResult();
transformer.transform(source, domResult);
Document document = (Document) domResult.getNode();
return QNameUtils.getQNameForNode(document.getDocumentElement());
public void staxSource(XMLStreamReader streamReader) throws Exception {
if (streamReader.getEventType() == XMLStreamConstants.START_DOCUMENT) {
try {
streamReader.nextTag();
}
catch (XMLStreamException ex) {
throw new IllegalStateException("Could not read next tag: " + ex.getMessage(), ex);
}
}
if (streamReader.getEventType() == XMLStreamConstants.START_ELEMENT ||
streamReader.getEventType() == XMLStreamConstants.END_ELEMENT) {
result = streamReader.getName();
}
}
public void saxSource(XMLReader reader, InputSource inputSource) throws Exception {
// Do nothing
}
public void streamSource(InputStream inputStream) throws Exception {
// Do nothing
}
public void streamSource(Reader reader) throws Exception {
// Do nothing
}
}