Fetch command is not very efficient
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Key: JAMES-808
URL: https://issues.apache.org/jira/browse/JAMES-808
Project: James
Issue Type: Improvement
Components: IMAPServer
Affects Versions: Trunk
Reporter: Zsombor Gegesy
Fix For: Trunk
Currently the implementation of the FETCH command is not very efficient. For
example to retrieve one mail the following conversions will happens:
1, the backend creates a MimeMessage from a file/database blob/thin air/etc
2, the frontend converts into a byte array, with correct CRLF line endings. (I
don't get, why it's needed, every incoming MimeMessage is already in this
format, isn't it ?)
3, the frontend appends it into a StringBuffer in the FetchCommand class
4, after some String manipulation it gets sent over an InternetPrintWriter
which checks also that all line endings in correct style.
I'm not sure that the whole thing is absolutly necessary. There is two other
problem with the current code :
1, it doesn't calculate the correct MessageResult flags, so the backend cant
optimize out the unnecessary things.
2, It doesn't parse the BODY[]<0.1024> style commands.
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