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Posted to users@camel.apache.org by Andii <an...@softwaremind.pl> on 2009/06/01 11:44:16 UTC
Content message router conversion exception
I'm new in Camel.
I want to use content message router to process a message in different ways
depending on data in message header. Input message countains in body user
defined (my) type (com.my.defined.type.Document). Before sending that
message as input to router I put some new data into header which are used by
router to decide where the message should be passed (for example
document.file.size). I have following configuration:
<from uri="file://inbox/upload-file-simple" />
<to uri="bean:documentCreator?methodName=createDocumentFromFile" />
<to uri="bean:documentProcessor?methodName=putRequiredDataToMsgHeader" />
<choice>
<when>
<xpath>in:header('document.file.size') > 20000</xpath>
<to uri="bean:someOtherBean1?methodName=name" />
</when>
<otherwise>
<to uri="bean:someOtherBean2?methodName=name" />
</otherwise>
</choice>
But when I try run that example I see following error
10:39:19,365 | ERROR | Component@674e9b | DeadLetterChannel |
org.apache.camel.processor.Logger 203 | Failed delivery for exchangeId:
ID-host/40757-1243842719103/0-12. On delivery attempt: 0 caught:
org.apache.camel.NoTypeConversionAvailableException: No type converter
available to convert from type: class
org.apache.camel.component.file.FileMessage to the required type:
org.w3c.dom.Document with value FileMessage:
inbox/upload-file-simple/MyFile.pdf
org.apache.camel.NoTypeConversionAvailableException: No type converter
available to convert from type: class
org.apache.camel.component.file.FileMessage to the required type:
org.w3c.dom.Document w
ith value FileMessage: inbox/upload-file-simple/MyFile.pdf
I guess that error may occur because message body is not a text (XML). If
it's true what should I do ? Use other EIP pattern ?? Or maybe put my object
to exchange attachement and leave empty body ?
Many thanks for help
Andrzej
--
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Re: Content message router conversion exception
Posted by Andii <an...@softwaremind.pl>.
Hi
Thanks for your help.
Unfortunatelly after conversion message body to String type (using
convertBodyTo element) camel still throws
No type converter available to convert from type:
classorg.apache.camel.component.file.FileMessage to the required type:
org.w3c.dom.Document
After that I use JAXB to convert my object to XML (marshal and unmarshal)
but it doesn't help too.
I solve that problem using groovy language instead of xpath.
Regards
Andrzej
Claus Ibsen-2 wrote:
>
> Hi
>
> You can add a convertBodyTo to force Camel to load your file and let
> the payload be a well known type the XPath can work with.
>
> Must obvious is to convert it to a String.
>
> So after the from() or just before the xpath you can do:
> .convertBodyTo(String.class)
>
> In Spring DSL its
> <convertBodyTo type="java.lang.String"/>
>
>
>
> On Mon, Jun 1, 2009 at 11:44 AM, Andii <an...@softwaremind.pl> wrote:
>>
>> I'm new in Camel.
>> I want to use content message router to process a message in different
>> ways
>> depending on data in message header. Input message countains in body user
>> defined (my) type (com.my.defined.type.Document). Before sending that
>> message as input to router I put some new data into header which are used
>> by
>> router to decide where the message should be passed (for example
>> document.file.size). I have following configuration:
>>
>> <from uri="file://inbox/upload-file-simple" />
>> <to uri="bean:documentCreator?methodName=createDocumentFromFile" />
>> <to uri="bean:documentProcessor?methodName=putRequiredDataToMsgHeader" />
>> <choice>
>> <when>
>> <xpath>in:header('document.file.size') > 20000</xpath>
>> <to uri="bean:someOtherBean1?methodName=name" />
>> </when>
>> <otherwise>
>> <to uri="bean:someOtherBean2?methodName=name" />
>> </otherwise>
>> </choice>
>>
>> But when I try run that example I see following error
>>
>> 10:39:19,365 | ERROR | Component@674e9b | DeadLetterChannel
>> |
>> org.apache.camel.processor.Logger 203 | Failed delivery for exchangeId:
>> ID-host/40757-1243842719103/0-12. On delivery attempt: 0 caught:
>> org.apache.camel.NoTypeConversionAvailableException: No type converter
>> available to convert from type: class
>> org.apache.camel.component.file.FileMessage to the required type:
>> org.w3c.dom.Document with value FileMessage:
>> inbox/upload-file-simple/MyFile.pdf
>> org.apache.camel.NoTypeConversionAvailableException: No type converter
>> available to convert from type: class
>> org.apache.camel.component.file.FileMessage to the required type:
>> org.w3c.dom.Document w
>> ith value FileMessage: inbox/upload-file-simple/MyFile.pdf
>>
>>
>> I guess that error may occur because message body is not a text (XML). If
>> it's true what should I do ? Use other EIP pattern ?? Or maybe put my
>> object
>> to exchange attachement and leave empty body ?
>>
>> Many thanks for help
>> Andrzej
>>
>> --
>> View this message in context:
>> http://www.nabble.com/Content-message-router-conversion-exception-tp23811650p23811650.html
>> Sent from the Camel - Users mailing list archive at Nabble.com.
>>
>>
>
>
>
> --
> Claus Ibsen
> Apache Camel Committer
>
> Open Source Integration: http://fusesource.com
> Blog: http://davsclaus.blogspot.com/
> Twitter: http://twitter.com/davsclaus
>
>
--
View this message in context: http://www.nabble.com/Content-message-router-conversion-exception-tp23811650p23866372.html
Sent from the Camel - Users mailing list archive at Nabble.com.
Re: Content message router conversion exception
Posted by Claus Ibsen <cl...@gmail.com>.
Hi
You can add a convertBodyTo to force Camel to load your file and let
the payload be a well known type the XPath can work with.
Must obvious is to convert it to a String.
So after the from() or just before the xpath you can do:
.convertBodyTo(String.class)
In Spring DSL its
<convertBodyTo type="java.lang.String"/>
On Mon, Jun 1, 2009 at 11:44 AM, Andii <an...@softwaremind.pl> wrote:
>
> I'm new in Camel.
> I want to use content message router to process a message in different ways
> depending on data in message header. Input message countains in body user
> defined (my) type (com.my.defined.type.Document). Before sending that
> message as input to router I put some new data into header which are used by
> router to decide where the message should be passed (for example
> document.file.size). I have following configuration:
>
> <from uri="file://inbox/upload-file-simple" />
> <to uri="bean:documentCreator?methodName=createDocumentFromFile" />
> <to uri="bean:documentProcessor?methodName=putRequiredDataToMsgHeader" />
> <choice>
> <when>
> <xpath>in:header('document.file.size') > 20000</xpath>
> <to uri="bean:someOtherBean1?methodName=name" />
> </when>
> <otherwise>
> <to uri="bean:someOtherBean2?methodName=name" />
> </otherwise>
> </choice>
>
> But when I try run that example I see following error
>
> 10:39:19,365 | ERROR | Component@674e9b | DeadLetterChannel |
> org.apache.camel.processor.Logger 203 | Failed delivery for exchangeId:
> ID-host/40757-1243842719103/0-12. On delivery attempt: 0 caught:
> org.apache.camel.NoTypeConversionAvailableException: No type converter
> available to convert from type: class
> org.apache.camel.component.file.FileMessage to the required type:
> org.w3c.dom.Document with value FileMessage:
> inbox/upload-file-simple/MyFile.pdf
> org.apache.camel.NoTypeConversionAvailableException: No type converter
> available to convert from type: class
> org.apache.camel.component.file.FileMessage to the required type:
> org.w3c.dom.Document w
> ith value FileMessage: inbox/upload-file-simple/MyFile.pdf
>
>
> I guess that error may occur because message body is not a text (XML). If
> it's true what should I do ? Use other EIP pattern ?? Or maybe put my object
> to exchange attachement and leave empty body ?
>
> Many thanks for help
> Andrzej
>
> --
> View this message in context: http://www.nabble.com/Content-message-router-conversion-exception-tp23811650p23811650.html
> Sent from the Camel - Users mailing list archive at Nabble.com.
>
>
--
Claus Ibsen
Apache Camel Committer
Open Source Integration: http://fusesource.com
Blog: http://davsclaus.blogspot.com/
Twitter: http://twitter.com/davsclaus