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INT-909 Added 'extractPayload' property (might rename) to the XmlPayloadMarshallingTransformer. The default is TRUE, but setting it to FALSE enables marshalling of the entire Message rather than just the payload.

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Mark Fisher
2009-12-07 14:33:32 +00:00
parent 0b152a0a45
commit 53beb01ae7
4 changed files with 121 additions and 46 deletions
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38
org.springframework.integration.xml/src/main/java/org/springframework/integration/xml/transformer/XmlPayloadMarshallingTransformer.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2002-2008 the original author or authors.
* Copyright 2002-2009 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -21,21 +21,21 @@ import java.io.IOException;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Result;
import org.springframework.integration.core.Message;
import org.springframework.integration.core.MessagingException;
import org.springframework.integration.transformer.AbstractPayloadTransformer;
import org.springframework.integration.transformer.AbstractTransformer;
import org.springframework.integration.xml.result.DomResultFactory;
import org.springframework.integration.xml.result.ResultFactory;
import org.springframework.oxm.Marshaller;
import org.springframework.util.Assert;
/**
* An implementation of {@link PayloadTransformer} that delegates to an OXM
* {@link Marshaller}.
* An implementation of {@link AbstractTransformer} that delegates to an OXM {@link Marshaller}.
*
* @author Mark Fisher
* @author Jonas Partner
*/
public class XmlPayloadMarshallingTransformer extends AbstractPayloadTransformer<Object, Object> {
public class XmlPayloadMarshallingTransformer extends AbstractTransformer {
private final Marshaller marshaller;
@@ -43,12 +43,15 @@ public class XmlPayloadMarshallingTransformer extends AbstractPayloadTransformer
private final ResultTransformer resultTransformer;
private volatile boolean extractPayload = true;
public XmlPayloadMarshallingTransformer(Marshaller marshaller, ResultTransformer resultTransformer)
throws ParserConfigurationException {
Assert.notNull(marshaller, "a marshaller is required");
this.marshaller = marshaller;
this.resultTransformer = resultTransformer;
resultFactory = new DomResultFactory();
this.resultFactory = new DomResultFactory();
}
public XmlPayloadMarshallingTransformer(Marshaller marshaller) throws ParserConfigurationException {
@@ -61,25 +64,36 @@ public class XmlPayloadMarshallingTransformer extends AbstractPayloadTransformer
this.resultFactory = resultFactory;
}
/**
* Specify whether the source Message's payload should be extracted prior
* to marshalling. This value is set to "true" by default. To send the
* Message itself as input to the Marshaller instead, set this to "false".
*/
public void setExtractPayload(boolean extractPayload) {
this.extractPayload = extractPayload;
}
@Override
public Object transformPayload(Object payload) {
public Object doTransform(Message<?> message) {
Object source = (this.extractPayload) ? message.getPayload() : message;
Object transformedPayload = null;
Result result = this.resultFactory.createResult(payload);
Result result = this.resultFactory.createResult(source);
if (result == null) {
throw new MessagingException(
"Unable to marshal payload, ResultFactory returned null.");
}
try {
this.marshaller.marshal(payload, result);
this.marshaller.marshal(source, result);
transformedPayload = result;
} catch (IOException e) {
}
catch (IOException e) {
throw new MessagingException("Failed to marshal payload", e);
}
if (transformedPayload == null) {
throw new MessagingException("Failed to transform payload");
}
if (resultTransformer != null) {
transformedPayload = resultTransformer.transformResult(result);
if (this.resultTransformer != null) {
transformedPayload = this.resultTransformer.transformResult(result);
}
return transformedPayload;
}