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From "Emmanuel Lecharny (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DIRSERVER-1319) Cannot save String values larger than 64 Kb
Date Wed, 02 Jun 2010 11:21:38 GMT

    [ https://issues.apache.org/jira/browse/DIRSERVER-1319?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12874550#action_12874550
] 

Emmanuel Lecharny commented on DIRSERVER-1319:
----------------------------------------------

You probably just have to modify the StringValue.serialize() method, and only take care of
the wrappedValue and normalizedValue, as the ID won't be that big.

However, that would be interesting to replace all the writeUTF method by a call to something
smarter, that will take care of both cases. 

You may even use your own way to write a String : write the length first, and then if it's
above 20 000, then switch to the block system (a block will be a part of the string, preceded
by the block's length). For instance, if we have to write a 50 000 chars long String, it will
be stored as :
50000 (length), 20000 (block 1 length), <the first 20 000 chars>, 20000 (block 2 length),
<the next 20 000 chars>, 10000 (block 3 length), <the last 10 000 chars>.

> Cannot save String values larger than 64 Kb 
> --------------------------------------------
>
>                 Key: DIRSERVER-1319
>                 URL: https://issues.apache.org/jira/browse/DIRSERVER-1319
>             Project: Directory ApacheDS
>          Issue Type: Bug
>    Affects Versions: 1.5.4
>            Reporter: Emmanuel Lecharny
>            Assignee: Felix Knecht
>             Fix For: 2.0.0-RC1
>
>
> We can't save String values into the server due to the way the entries are serialized
: we are using a OutputStream.writeUTF() which is limited to 65535 chars.
> We have two options :
> - we save data splitting them in smaller chuncks
> - we save a reference to a file, considering the data as a stream.
> The second option would be way better, but is more complicated to implement. In any case,
both system change the way the serialization works.

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