[ http://issues.apache.org/jira/browse/DERBY-1396?page=all ]
Tomohito Nakayama reassigned DERBY-1396:
----------------------------------------
Assign To: Tomohito Nakayama
> ReEncodedInputStream may fail to read all of source Reader.
> ------------------------------------------------------------
>
> Key: DERBY-1396
> URL: http://issues.apache.org/jira/browse/DERBY-1396
> Project: Derby
> Type: Bug
> Reporter: Tomohito Nakayama
> Assignee: Tomohito Nakayama
>
> The class org.apache.derby.impl.drda.ReEncodedInputStream seems to have a
> bug...
> In this class, there exists next code.
> int count;
> if(( count = reader.read(decodedBuffer_, 0, BUFFERED_CHAR_LEN )) < 1 ){
> return null;
> }
> In this code, the condition of "<1" was intended to judge whether reader was
> read entirely.
> However,spec of java api says that reader returns -1 if the end of the reader
> has been reached and not 0.
> Then "<1" is not appropriate.
> Current code judges 0 as the end of reader.
> Then, if 0 was returned in the meaning that "No character was read now but
> may continue" as possible in java api,
> this code will not work correctly...
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