You need to add a special file in the JAR to have the converts auto register in Camel when it boot up.
See section _Writing your own .._ http://camel.apache.org/type-converter.html Also the Camel in Action book covers transformation and type converters in chapter 3. The book may help clear up a thing or two for you. If you want to start simple then you may want to use mock endpoints instead of JPA/JDBC to focus on the routing and transformation. Then you can always later start to battle with the database. On Fri, Sep 24, 2010 at 5:43 PM, shaun.bar...@rulefinancial.com <shaun.bar...@rulefinancial.com> wrote: > > Hi, > I started with the ETL example (http://camel.apache.org/etl-example.html) as > I am looking at this library to do some message routing and transformation > for a test facility in work. I simply wanted to see how to write and use a > Custom Transformer - but it seems that this is not as straightforwards as I > hoped. So (after writing my own project and having to accept failure) I > altered EtlRoutes.java to this: > public class EtlRoutes extends SpringRouteBuilder { > public void configure() throws Exception { > > // from("file:src/data?noop=true") > // .convertBodyTo(PersonDocument.class) > // .to("jpa:org.apache.camel.example.etl.CustomerEntity"); > // > // // the following will dump the database to files > // > from("jpa:org.apache.camel.example.etl.CustomerEntity?consumeDelete=false&delay=3000&consumeLockEntity=false") > // .setHeader(Exchange.FILE_NAME, el("${in.body.userName}.xml")) > // .to("file:target/customers"); > > // from("file:src/data?noop=true") > // .convertBodyTo(PersonDocument.class) > // .to("file:target/customers"); > > from("file:src/data?noop=true") > .convertBodyTo(PersonDocument.class) > .to("class:org.apache.camel.example.etl.TryIt"); > > // from("file:target/customers?noop=true") > // .convertBodyTo(CustomerEntity.class) > // .to("class:org.apache.camel.example.etl.TryIt"); > > // from("class:org.apache.camel.example.etl.TryIt") > // .setHeader(Exchange.FILE_NAME, el("${in.body.fullDetails}.txt")) > // .to("file:target/tried"); > > } > } > > and added a @Converter to the existing CustomerTransformer transformer like > so: > > > �...@converter > public TryIt toTryIt( PersonDocument customer, Exchange exchange ) > throws Exception { > TryIt it = new TryIt(); > it.setDetails( customer.getFirstName(), customer.getLastName(), > customer.getCity(), "02" ); > return it; > } > > > Yet no matter what I do the converter method is not used and instead the > TryIt constructor arg is called with a value of GenericFile (i.e the raw > file contents) the PersonDocument object hasn't been converted to and I am > none the wiser why? This is most confusing since all I wanted to do is > proove how to read, transform and write some simple data (in real life it > will be more jms/xm/transform/xml ..) > > Any help/tips etc would be really appreciated? > > Thanks > Shaun > -- > View this message in context: > http://camel.465427.n5.nabble.com/Newbie-Pls-help-ETL-Example-Modification-Doesn-t-work-tp2852839p2852839.html > Sent from the Camel - Users mailing list archive at Nabble.com. > -- Claus Ibsen Apache Camel Committer Author of Camel in Action: http://www.manning.com/ibsen/ Open Source Integration: http://fusesource.com Blog: http://davsclaus.blogspot.com/ Twitter: http://twitter.com/davsclaus
