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From "V.Narayanan (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-2604) Implement Clob support for locators
Date Sat, 26 May 2007 02:24:16 GMT

     [ https://issues.apache.org/jira/browse/DERBY-2604?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

V.Narayanan updated DERBY-2604:

    Attachment: ClobLocatorWork_v4.stat

This patch addresses the bugs that were found during the process of enabling 
Clob support for locators.

Pls note that Clob locators are currently disabled. 

I have not yet run junit All for the patch. Since the code is diabled I do not 
expect any failures. But  I will run junit All and revert back with the results.

The following are the details of the details of the files modified and their
import apropos the context.

M      java/client/org/apache/derby/client/am/ClobLocatorWriter.java

writeCharacters(line no 162) method was using c.length as the length of the string
transmitted to the server using the clobSetString stored procedure. This should
use len instead.

M      java/client/org/apache/derby/client/am/Clob.java

The PositionX method on the client that accepts a Clob had not been converted 
to use locators. This has been done.

The getCharacterStream(long pos, long length) method should return a stream of
length characters starting from pos. Hence the length parameter that should be
passed to the constructor of the ClobLocatorReader class should have been
pos+len-1 instead of len.

M      java/client/org/apache/derby/client/am/CallableLocatorProcedures.java

The stored procedure call to CLOBGETPOSITIONFROMSTRING was sending the 
original string instead of sending it in chunks. This has been changed to send the 
chunks instead(stringToBeCompared).

> Implement Clob support for locators
> -----------------------------------
>                 Key: DERBY-2604
>                 URL: https://issues.apache.org/jira/browse/DERBY-2604
>             Project: Derby
>          Issue Type: Sub-task
>          Components: Network Server
>            Reporter: V.Narayanan
>         Assigned To: V.Narayanan
>         Attachments: ClobLocatorWork_v1.diff, ClobLocatorWork_v1.stat, ClobLocatorWork_v2.diff,
ClobLocatorWork_v2.stat, ClobLocatorWork_v3.diff, ClobLocatorWork_v3.stat, ClobLocatorWork_v4.stat,
ConnectionLocatorWork_v2.diff, ConnectionLocatorWork_v4.diff

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