Question regarding File Component

[shekher awasthi <sh...@gmail.com>]

Hi,

After going through what all was available about File component ,i still
have one query regarding the working of this component

i have configured route something like this

from("file:data/csv?fileName=input-customer3.csv").to("file:data/csvoutput")

since i have specified specific file name in side the csv directory and as
per my assumptions Camel file component should try to look for this exact
file

but what i observe is that it not showing any error/exception about the file
name (i have intentionaly give wrong file name which does not exist) when
the file with specified name is not there,it keep polling the location till
i am not closing the context



Is it a intentioanly defined way of working?

is there any way camel can notify back that such file does not exist in the
specified location?



Thanks in advance

Re: Question regarding File Component

[Claus Ibsen <cl...@gmail.com>]

On Tue, Aug 9, 2011 at 12:10 PM, shekher awasthi
<sh...@gmail.com> wrote:
> Hi,
>
> After going through what all was available about File component ,i still
> have one query regarding the working of this component
>
> i have configured route something like this
>
> from("file:data/csv?fileName=input-customer3.csv").to("file:data/csvoutput")
>
> since i have specified specific file name in side the csv directory and as
> per my assumptions Camel file component should try to look for this exact
> file
>
> but what i observe is that it not showing any error/exception about the file
> name (i have intentionaly give wrong file name which does not exist) when
> the file with specified name is not there,it keep polling the location till
> i am not closing the context
>
>
>
> Is it a intentioanly defined way of working?

Yes that is how it works. Its a filter. So it only pickup files
matching any filter criteria you setup.


>
> is there any way camel can notify back that such file does not exist in the
> specified location?
>

You can configure a custom
org.apache.camel.spi.PollingConsumerPollStrategy on the file endpoint,
which has callbacks.

For example it will invoke the commit method with polledMessages=0 in
case there was 0 files polled.
http://camel.apache.org/polling-consumer.html


 from("file:data/csv?fileName=input-customer3.csv&pollStrategy=#myPollStrategy").to("file:data/csvoutput")


And then you need to register your custom PollingConsumerPollStrategy
in the Registry with the bean id "myPollStrategy".

If you use a Spring XML file then its simply just

<bean id="myPollStrategy" class="com.mycompany...."/>


>
>
> Thanks in advance
>



-- 
Claus Ibsen
-----------------
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Email: cibsen@fusesource.com
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