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Date: Sat, 7 Feb 2009 04:03:02 -0800 (PST)
From: "Markus Wiederkehr (JIRA)" <mime4j-dev@james.apache.org>
To: mime4j-dev@james.apache.org
Subject: [jira] Commented: (MIME4J-114) Efficient Read Access To Parts Of A
 Parsed Document
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    [ https://issues.apache.org/jira/browse/MIME4J-114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12671456#action_12671456 ] 

Markus Wiederkehr commented on MIME4J-114:
------------------------------------------

Retrieving the byte offset from the underlying input stream might be tricky since Mime4j uses a few buffers when parsing a message. I'm not saying it is impossible of course.

Inner transfer encodings are something else to consider. Let's say you had a message that contains another (maybe forwarded) message in base64 encoded form. That inner message can of course also have parts that are transfer encoded themselves. A byte offset alone does not help with retrieving parts of the inner message.

> Efficient Read Access To Parts Of A Parsed Document
> ---------------------------------------------------
>
>                 Key: MIME4J-114
>                 URL: https://issues.apache.org/jira/browse/MIME4J-114
>             Project: JAMES Mime4j
>          Issue Type: Wish
>    Affects Versions: 0.6
>            Reporter: Robert Burrell Donkin
>             Fix For: 0.7
>
>
> Use Case
> --------------
> Consider a large MIME document stored (as a single document) in a medium which allows random access to the bits (for example,  a BLOB in a data store or a file.) 
> I parse the document once using Mime4J and store the meta-data (for example, in a data store) so that I can read this data many times without loading and reparsing this large document
> I wish to be able to read efficiently a part of the document without loading the whole, and this may happen frequently

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