Page History

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• Customer 1: XML over FTP
• Customer 2: CSV over HTTP
• Customer 3: Excel via e-mail

Wiki MarkupNow on the Acme side, all this has to be converted to a canonical XML format and submitted to the Acme accounting system via JMS. Then the Acme accounting system does its stuff and sends an XML reply via JMS, with a summary of what it processed (e.g. 3 line items accepted, line item #2 in error, total invoice $123.45). Finally, that data needs to be formatted into an e-mail, and sent to a contact at the customer in question ("Dear Joyce, we received an invoice on 1/2/08. We accepted 3 line items totaling $123.45, though there was an error with line items #2 \ [invalid quantity ordered\]. Thank you for your business. Love, Acme.").

So it turns out Camel can handle all this:

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Here's a sample POM. We've added a dependency on camel-core, and set the compile version to 1.5 (so we can use annotations):

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0">
    <modelVersion>4.0.0</modelVersion>
    <groupId>org.apache.camel.tutorial</groupId>
    <artifactId>business-partners</artifactId>
    <version>1.0-SNAPSHOT</version>
    <name>Camel Business Partners Tutorial</name>
    <dependencies>
        <dependency>
            <artifactId>camel-core</artifactId>
            <groupId>org.apache.camel</groupId>
            <version>1.4.0</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.5</source>
                    <target>1.5</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

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Start with a simple test class and test Spring context like last time, perhaps based on the name CSVInputTest:

/**
 * A test class the ensure we can convert Partner 2 CSV input files to the
 * canonical XML output format, using JAXB POJOs.
 */
@ContextConfiguration(locations = "/CSVInputTest-context.xml")
public class CSVInputTest extends AbstractJUnit38SpringContextTests {
    @Autowired
    protected CamelContext camelContext;
    protected ProducerTemplate<Exchange> template;

    protected void setUp() throws Exception {
        super.setUp();
        template = camelContext.createProducerTemplate();
    }

    public void testCSVConversion() {
        // TODO
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                               http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
                           http://activemq.apache.org/camel/schema/spring
                               http://activemq.apache.org/camel/schema/spring/camel-spring-1.4.0.xsd">

    <camelContext id="camel" xmlns="http://activemq.apache.org/camel/schema/spring">
        <!-- TODO -->
    </camelContext>
</beans>

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