Question

DB2 Clob insert/select/update with JDBC

Asked by: rick

Hi.

I am trying to switch from an Oracle 8i to DB2 database and I need to update the Java code to support the DB2 CLOB.  

Here is a sample of the existing code that I am using to write and retrieve the CLOB in the ORACLE 8i database.


//RETRIEVING THE CLOB FROM ORACLE 8i
Clob clob = rs.getClob("XML");
Reader clobStream = clob.getCharacterStream();
StringBuffer strBuffer = new StringBuffer();

// Read from the Clob stream and write to the stringbuffer
int    nchars = 0; // Number of characters read
char[] buffer = new char[10 * 1024];  //  Buffer holding characters being transferred
while( (nchars = clobStream.read(buffer)) != -1 ) {
     // Write to StringBuffer
     strBuffer.append(buffer, 0, nchars);                  
}
String strXML = strBuffer.toString();


//WRITING THE CLOB TO ORACLE 8i
Statement statement2 = connect.createStatement();
strQuery = "SELECT IT_XML FROM " + DatabaseNames.SHOPPINGCART_ITEMS_TABLE + " " +
                         "WHERE IT_ITEMID = " + itemID + " FOR UPDATE";
resultset = statement2.executeQuery(strQuery);

if (resultset.next()) {
     java.sql.Clob clob = resultset.getClob("IT_XML");
     Writer clobWriter = ((weblogic.jdbc.common.OracleClob)clob).getCharacterOutputStream();
     clobWriter.write( strXML.trim() );
     clobWriter.flush();
}


Please provide examples of how I can implement the same logic for the IBM DB2 database CLOBs.

Thank you for your help.

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Asked On
2003-03-31 at 11:24:21ID20569148
Tags

db2

,

clob

,

insert

,

java

,

jdbc

Topic

DB2 Database

Participating Experts
3
Points
250
Comments
9

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Accepted Solution

by: mglxxxPosted on 2003-03-31 at 23:29:03ID: 8243794

Rank: Guru

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by: rickPosted on 2003-04-01 at 00:58:49ID: 8244207

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by: aruneeshsalhotraPosted on 2003-07-01 at 07:51:11ID: 8834246

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by: aruneeshsalhotraPosted on 2003-07-01 at 07:55:47ID: 8834273

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by: mglxxxPosted on 2003-07-02 at 03:55:01ID: 8838810

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by: rickPosted on 2003-07-02 at 09:39:00ID: 8841930

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by: aruneeshsalhotraPosted on 2003-07-02 at 13:55:55ID: 8844012

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