This document discusses message transformation techniques in JBoss Fuse, including transforming message formats like XML, JSON, CSV, and POJO; using components like marshal, unmarshal, and transform to change formats; updating message metadata and content; and using processors and beans to customize transformations.

1. JBoss Fuse 101
Getting Started workshop
Christina Lin
JBoss Technology Evangelist
clin@redhat.com

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Message Transformation

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Message Transformation
Format / Type
Transformation
Metadata update
Message Content
enrichment/reduction

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Data Transformation
XML
CSV
JSON
POJO
Transform
Marshal/Unmarshal
Processor
Bean
Format
FileString
Text
Date
Type

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Marshal
Component Component
XML
CVS
JSON
POJO

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Marshal
<marshal>
<xmljson/>
</marshal>
<marshal>
<jaxb partClass=“example.TradeOrder”
contextPath=“example"/>
</marshal>
<marshal>
<bindy classtype=”example.Product" type="Csv">
</marshal>
<marshal>
<serialization/>
</marshal>

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Unmarshal
Component Component
XML
CVS
JSON
POJO

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Unmarshal
<unmarshal>
<xmljson/>
</unmarshal>
<unmarshal>
<jaxb partClass=“example.TradeOrder”
contextPath=“example"/>
</unmarshal>
<unmarshal>
<bindy classtype=”example.Product" type="Csv">
</unmarshal>
<unmarshal>
<serialization/>
</unmarshal>

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Transform
Constant
xquery
simple
javascript
Expression
<constant>Harry Potter</constant>
<xquery>
For $/bookstore/book
where $x/price>30
return $x/title
</xquery>
<simple> <books>${in.body} <books>
</simple>
<javaScript>
request.body.toLowerCase()
</javaScript>

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Processor
package org.blogdemo.transformation;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
public class DataProcessor implements Processor {
@Override
public void process(Exchange exchange) throws Exception {
String incomingData = exchange.getIn().getBody(String.class);
incomingData = "Hello"+incomingData;
exchange.getIn().setBody(incomingData);
}
}
Processor

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Processor
<bean id="DataProcessor" class="org.blogdemo.transformation.DataProcessor"/>
<camelContext trace="false" id="blueprintContext"
xmlns="http://camel.apache.org/schema/blueprint">
<route>
<from uri="file://somewhere?delete=true"/>
<process ref="DataProcessor"/>
<to uri="file://elsewhere"/>
</route>
</camelContext> Calling processor

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Bean
package org.blogdemo.transformation;
public class ConvertBean {
public static String addHello(String inputContent) {
return "Hellp "+inputContent;
}
}
<bean id="ConvertBean" class="org.blogdemo.transformation.ConvertBean"/>
<camelContext trace="false" id="blueprintContext"
xmlns="http://camel.apache.org/schema/blueprint">
<route>
<from uri="file://somewhere?delete=true"/>
<bean method="addHello" ref="ConvertBean"/>
<to uri="file://elsewhere"/>
</route>
</camelContext>
Calling bean

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Bean

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META DATA Update
Body
Header
Change or remove
properties here

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Message content enrichment
Content Enricher
Resequencer
Claim Check
Content Filter
Normalizer

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My 2nd Camel Ride
Stock
purchase
XML
JSON
POJO
Another
Vendor