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https://issues.apache.org/jira/browse/CAMEL-18039?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17537256#comment-17537256
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Karen Lease commented on CAMEL-18039:
-------------------------------------
{quote}At bottom, maybe it would be simple and good to copy properties and
headers from current exchange to dummy exchange before evaluation?
{quote}
This is not possible due to the architecture of pollEnrich. According to the
[documentation|https://camel.apache.org/components/3.16.x/eips/pollEnrich-eip.html]:
{quote}pollEnrich uses a Polling Consumer to obtain the additional data.
{quote}
The PollEnricher calls PollingConsumer.receive() to get the data, in your case
by polling for a file. The receive method does not provide any way to pass an
Exchange; instead it returns an Exchange representing the event which was
consumed.
The fileName property on the File endpoint can also be used when "producing"
files; in this case, the incoming Exchange properties are available.
For this reason, the best solution for your case is to use the expression to
dynamically create the Consumer endpoint.
> endpoint-dsl - pollEnrich or file consumer polls file alphabetically despite
> specified fileName
> -----------------------------------------------------------------------------------------------
>
> Key: CAMEL-18039
> URL: https://issues.apache.org/jira/browse/CAMEL-18039
> Project: Camel
> Issue Type: Bug
> Components: camel-core, camel-file
> Affects Versions: 3.16.0
> Reporter: Yasser Zamani
> Priority: Minor
> Fix For: 3.18.0
>
>
> I have following route
> {code:java}
> private static final String FILE_PROPERTY_NAME = "MyCsvFileName";
> private static final String FILE_NAME = "${exchangeProperty." +
> FILE_PROPERTY_NAME + "}";
> private static final String FOLDER_NAME = ".";
> from("direct:MY_CSV").routeId("MY_CSV").
> setBody(constant(FIRST_LINE)).
> transform(body().append("\r\n")).
>
> setProperty(FILE_PROPERTY_NAME).simple("MY_${messageTimestamp}.csv").
> to(file(FOLDER_NAME).fileName(FILE_NAME)).
> .
> .
> .
> pollEnrich(file(FOLDER_NAME).fileName(FILE_NAME)).
> log("The CSV file ${header." + FILE_NAME_ONLY + "} generated.
> Now uploading it...").
> {code}
> that logs following line
> {quote}The CSV file azurite-blob.sh generated. Now uploading it...
> {quote}
> We eventually realized that pollEnrich or file consumer polls file
> alphabetically despite specified fileName.
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