[jira] [Assigned] (CAMEL-4370) It's hardly possible to use all expression of the Simple language to create file names in the file component

["Claus Ibsen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CAMEL-4370?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Claus Ibsen reassigned CAMEL-4370:
----------------------------------

    Assignee: Claus Ibsen

> It's hardly possible to use all expression of the Simple language to create file names in the file component
> ------------------------------------------------------------------------------------------------------------
>
>                 Key: CAMEL-4370
>                 URL: https://issues.apache.org/jira/browse/CAMEL-4370
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-core
>    Affects Versions: 2.7.1
>            Reporter: Sergey Zhemzhitsky
>            Assignee: Claus Ibsen
>              Labels: camel-file
>
> Sometimes it can be necessary to use custom headers to create a file name.
> For example, I declare my file endpoint in the following manner:
> {code}
> <route id="fileReader">
>     <from uri="file://rootFolder?move=.backup&amp;moveFailed=.error/${header.CustomHeader}" />
>     <to uri="file://out"/>
> </route>
> {code}
> The header "CustomHeader" cannot be read because of the following snippets of code in the org.apache.camel.component.file.GenericFile
> {code}
> /**
>  * Bind this GenericFile to an Exchange
>  */
> public void bindToExchange(Exchange exchange) {
>     exchange.setProperty(FileComponent.FILE_EXCHANGE_FILE, this);
>     GenericFileMessage<T> in = new GenericFileMessage<T>(this);
>     exchange.setIn(in);
>     populateHeaders(in);
> }
> /**
>  * Populates the {@link GenericFileMessage} relevant headers
>  *
>  * @param message the message to populate with headers
>  */
> public void populateHeaders(GenericFileMessage<T> message) {
>     if (message != null) {
>         message.setHeader(Exchange.FILE_NAME_ONLY, getFileNameOnly());
>         message.setHeader(Exchange.FILE_NAME, getFileName());
>         message.setHeader("CamelFileAbsolute", isAbsolute());
>         message.setHeader("CamelFileAbsolutePath", getAbsoluteFilePath());
>         if (isAbsolute()) {
>             message.setHeader(Exchange.FILE_PATH, getAbsoluteFilePath());
>         } else {
>             // we must normalize path according to protocol if we build our own paths
>             String path = normalizePathToProtocol(getEndpointPath() + File.separator + getRelativeFilePath());
>             message.setHeader(Exchange.FILE_PATH, path);
>         }
>         message.setHeader("CamelFileRelativePath", getRelativeFilePath());
>         message.setHeader(Exchange.FILE_PARENT, getParent());
>         if (getFileLength() >= 0) {
>             message.setHeader("CamelFileLength", getFileLength());
>         }
>         if (getLastModified() > 0) {
>             message.setHeader(Exchange.FILE_LAST_MODIFIED, new Date(getLastModified()));
>         }
>     }
> }
> {code}
> As you can see a new "in" message is created and not all the headers from the original message are copied to it.

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