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This commit is contained in:
Mark Fisher
2008-06-25 13:44:34 +00:00
parent 8eaef06676
commit a2a40bca4d
1 changed files with 31 additions and 26 deletions
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57
org.springframework.integration.xml/src/main/java/org/springframework/integration/xml/transformer/XsltPayloadTransformer.java
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@@ -24,72 +24,77 @@ import javax.xml.transform.dom.DOMResult;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamSource;
import org.w3c.dom.Document;
import org.springframework.core.io.Resource;
import org.springframework.integration.message.Message;
import org.springframework.integration.message.MessagingException;
import org.springframework.integration.transformer.MessageTransformer;
import org.springframework.xml.transform.StringResult;
import org.springframework.xml.transform.StringSource;
import org.w3c.dom.Document;
/**
* Simple Xslt transformer implementation which returns a transformed {@link Source} a {@link Document} or a {@link String}
* Simple XSLT transformer implementation which returns a transformed
* {@link Source}, {@link Document}, or {@link String}.
*
* @author Jonas Partner
*
*/
public class XsltPayloadTransformer implements MessageTransformer {
private final Templates templates;
public XsltPayloadTransformer(Templates templates) {
this.templates = templates;
}
public XsltPayloadTransformer(Resource xslResource) throws Exception {
this.templates = TransformerFactory.newInstance().newTemplates(new StreamSource(xslResource.getInputStream()));
}
@SuppressWarnings("unchecked")
public void transform(Message message) {
try{
if( (Document.class.isAssignableFrom(message.getPayload().getClass()))){
transformDocument(message);
} else if(Source.class.isAssignableFrom(message.getPayload().getClass())){
transformSource(message);
} else if (String.class.equals(message.getPayload().getClass())){
transformString(message);
} else {
throw new MessagingException(message,"Unsupproted payload type for transformation " + message.getPayload().getClass().getName());
try {
if (Document.class.isAssignableFrom(message.getPayload().getClass())) {
this.transformDocument(message);
}
else if (Source.class.isAssignableFrom(message.getPayload().getClass())) {
this.transformSource(message);
}
else if (String.class.equals(message.getPayload().getClass())) {
this.transformString(message);
}
else {
throw new MessagingException(message,
"Unsupported payload type for transformation: " + message.getPayload().getClass().getName());
}
} catch (TransformerException transE){
throw new MessagingException(message,"XSLT transformation failed", transE);
}
catch (TransformerException e) {
throw new MessagingException(message, "XSLT transformation failed", e);
}
}
@SuppressWarnings("unchecked")
protected void transformSource(Message message) throws TransformerException {
StringResult result = new StringResult();
templates.newTransformer().transform((Source)message.getPayload(), result);
this.templates.newTransformer().transform((Source) message.getPayload(), result);
message.setPayload(new StringSource(result.toString()));
}
@SuppressWarnings("unchecked")
private void transformString(Message message) throws TransformerException {
protected void transformString(Message message) throws TransformerException {
StringResult result = new StringResult();
templates.newTransformer().transform(new StringSource((String)message.getPayload()), result);
this.templates.newTransformer().transform(new StringSource((String) message.getPayload()), result);
message.setPayload(result.toString());
}
@SuppressWarnings("unchecked")
protected void transformDocument(Message message) throws TransformerException{
protected void transformDocument(Message message) throws TransformerException {
Document doc = (Document)message.getPayload();
DOMResult result = new DOMResult();
templates.newTransformer().transform(new DOMSource(doc), result);
this.templates.newTransformer().transform(new DOMSource(doc), result);
message.setPayload(result.getNode());
}