db-derby-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-3936) Add CharacterStreamDescriptor
Date Fri, 07 Nov 2008 13:56:44 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12645763#action_12645763

Knut Anders Hatlen commented on DERBY-3936:

I agree that the builder pattern is cleaner than having many constructors and/or a constructor
with a dozen parameters when immutability is a goal. But doesn't Builder's two-arg constructor
break the pattern? Isn't it clearer to have methods for those two fields as well?

> Add CharacterStreamDescriptor
> -----------------------------
>                 Key: DERBY-3936
>                 URL: https://issues.apache.org/jira/browse/DERBY-3936
>             Project: Derby
>          Issue Type: Sub-task
>          Components: JDBC
>    Affects Versions:
>            Reporter: Kristian Waagan
>            Assignee: Kristian Waagan
>            Priority: Minor
>         Attachments: derby-3936-1a-CharacterStreamDescriptor.diff
> A set of state information is required about byte streams representing characters to
be able to handle them properly.
> The basic pieces of information are:
>  - is bufferable
>  - is position aware
>  - data offset
>  - current byte position
>  - current char position
>  - byte length
>  - char length
> Additional info:
>  - encoding
>  - max allowed length
>  - bytes per char information
> The information is chosen with UTF8Reader in mind, and the plan is to pass a CharacterStreamDescriptor
instance to the constructor to allow the reader to configure itself appropriately. The information
is expected to be valid only at a specific point in time, as some of it will change as soon
as the reader starts working with the underlying stream.

This message is automatically generated by JIRA.
You can reply to this email to add a comment to the issue online.

View raw message