PreparedStatement.setCharacterStream() length

Question

It seems perverse that PreparedStatement.setCharacterStream() requires the length of the character stream as a parameter. Is there a value you can feed it so it will simply read to EOF?
public void setCharacterStream(int�parameterIndex,
Reader�reader,
int�length)
throws SQLException
Sets the designated parameter to the given Reader object, which is the given number of characters long. When a very large UNICODE value is input to a LONGVARCHAR parameter, it may be more practical to send it via a java.io.Reader object. The data will be read from the stream as needed until end-of-file is reached. The JDBC driver will do any necessary conversion from UNICODE to the database char format. Note: This stream object can either be a standard Java stream object or your own subclass that implements the standard interface.
Parameters:parameterIndex - the first parameter is 1, the second is 2, ...reader - the java.io.Reader object that contains the Unicode datalength - the number of characters in the stream Throws: SQLException - if a database access error occurs

Answer 1

user_7000002 wrote:
We seem to be having problems inserting and retrieving the data back into UTF-8.
I am trying to insert a text with a smart quote i.e. '’' character but it doesn't seem to get written correctly and comes back as if it gets re-encoded twice to UTF-8 and comes back as the charcter ''
My oracle database encoding is WE8ISO8859P1.You have the issue right there.
If by smart quotes you are referring to the Microsoft specific curvy quotes of e.g. 125x in the "C1 control code range", then it simply won't work.
You can not store such characters in a database with a character set based on standard ISO 8859-1, because the character repertoire does not define "smart quotes". Put differently, your database needs to be "at least" WE8MSWIN1252 (or other superset).
On a side note; NLS questions and discussions have a separate forum: [Globalization Support|http://forums.oracle.com/forums/forum.jspa?forumID=50].
Edited by: orafad on Feb 13, 2009 10:00 AM