How do I get an updateable ResultSet ?

Using Oracle 8.1.7 JDBC libs.
My code reads thus:
Statement stmt = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_UPDATABLE);
ResultSet rs = stmt.executeQuery("select * from my_table");
rs.moveToInsertRow();
.. yet I see this when I run it:
java.sql.SQLException: Invalid operation for read only resultset: moveToInsertRow
Any pointers?
Thanks,
- Michael

I'm partial to this series:
After Effects basics tutorials by Andrew Devis
The subject matter is very clearly-defined by topic.
And AE shouldn't up & quit on you... but you haven't breathed a word about your system or your AE version. Please share.

Similar Messages

How to create updateable resultset using sql with "order by"

Dear all,
I'm using the Derby database to hold a table of stock prices. After the table is populated, I want to do some calculations and store the result in a column.
I get the resultset using the following code
Statement stmt = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE); ResultSet rs = stmt.executeQuery(select history_id, value, days from history where ticker = '" + ticker + "' order by value_date"); {code} When I then try to update the "days" field, I get an SQLException telling me that the resultset is not updatable. However, if I remove the "order by" clause, I am able to update the data, but then my algorithm does not work as I need to traverse the data in a specific order. The quesion is: how do I create an updatable resultset using a sql-statement with an order by clause? Kind regards Karl Martin Lund

jschell wrote:
Seems rather obvious to me that the exception specifically tells you that you can't do that.OP: I would guess it's because ORDER BY forces the database to read all the result rows into a temporary area, sort them, and then return them from this temporary area, as opposed to streaming the results. The extra step probably makes updateable result sets more difficult (or maybe not possible), so they opted not to do it.

How can we get current time date with resultset?

Dear All,
I have to insert current time date in the table.So,i need to get the current time and date with result set.So,I will first get the time date and then insert it into the table.
I know how can we get current time and date without resultset.i have created this function its working.But now i want to use this.mean using resultset i want to put in the table.
How can i do this?
public static String DATE_FORMAT_NOW = "yyyy-MM-dd HH:mm:ss";
public static String now() {
Calendar cal = Calendar.getInstance();
SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT_NOW);
return sdf.format(cal.getTime());
}

yuck. Why not simply set a "new java.sql.Date()" to the SQL parameter in question?

Scrollable/Updateable ResultSet objects

I am trying to create an instance of a scrollable/updateable ResultSet object with the following code:
Statement stmt = con.createStatement(
ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_UPDATABLE);
ResultSet rs = stmt.executeQuery("SELECT * FROM sch.a");
The Connection object has been made successfully but am getting an AbstractMethodError Exception at line 1.
Can anyone please help me out here.
Thanks
I am using JDK 1.3.1 and JDBC 2.0

I use this and works fine for me....let me know how it goes...
ResultSet resultSetMultCond = null;
Statement getMultPartCond = null;
String sqlMultCond = null;
sqlMultCond = "SELECT #PART,#CONDS,COUNT(*) AS MCOUNT FROM MYLIB WHERE #PART = 'A123' GROUP BY #PART,#CONDS ORDER BY #PART";
getMultPartCond = conn.createStatement(java.sql.ResultSet.TYPE_SCROLL_SENSITIVE,java.sql.ResultSet.CONCUR_UPDATABLE);
resultSetMultCond = getMultPartCond.executeQuery(sqlMultCond);

Problem with Updateable ResultSet

Hi,
I'm having a problem updating an updateable resultset. When I query the database using anything other than the LIKE clause, I can update the resultset just fine. As soon as I add the LIKE clause to my select query and then try to update one of the records in the resultset I get an "Error in row". The database I am using is MS Access (yes I know, not a good choice), and I am using the driver that comes built into Java. I am also running JDK 1.5_06.
I've looked to see if maybe this is a known bug, but haven't found anything related to this. Has anyone else seen this same problem? Or know of a way to get around it?
Thank you in advance.

I'm confused then... Why would I be able to update
the resultset when I select that resultset not using
the LIKE clause, but when I use the LIKE clause to
get the resultset and then try to update it in some
way, I get an error. Because the database isn't giving you an updatable cursor if you use a like apparently. It just isn't. Don't know why.
Obviously the resultset is
updateable, Obviously not.
and I have selected the right cursor type
for each parameter (TYPE_SCROLL_INSENSITIVE and
CONCUR_UPDATABALE). I am sure you are but what you ask for is not always what you get.
I understand that it is not
required for the database and/or driver to fulfill my
wishes, but it seems odd Yes it does seem a bit odd but that doesn't make it less true. To be frank with you I can't remember the last time I used an updatable result set.
It's one of these things that seem all nifty at first but it's all very quirky and resource intensive and in almost all cases was better handled by an INSERT, UPDATE or DELETE statement in the first place.
that it I am able to update
the resultset when I have not used the LIKE clause to
create it, but am unable to update it when having
created it using the LIKE clause. :shrug: Because. I couldn't tell you why it does it this way. I am sure it has something to do with how it builds the cursor... generally in MS database stuff there are dynamic and static (or fixed I can't remember the names) "keysets" for a given result set. I am mangling the terminolgy here but it doesn't really matter... the point is with MS databases the way you search combined with any clauses combined with what fields you select all effect the ending cursor types you can have. This is true for most databases really... and to make a long story short I guess that a LIKE is just making the backing keyset or whatever non updatable.
I'll try your tip
of listing all of the columns instead of using * to
see if that makes a difference.It might but don't get your hopes up.
This is a general tip you can use to try and get an updatable cursor but honestly in your case I am not sure it will help. It seems to me that you are going to have to not use LIKE.
Which means you can either give up the updatable cursor OR the like. If you have to have an updatable cursor AND the LIKE then you are going to have to do this in two steps.
Query 1 - Select the keys by LIKE
Query 2 - Select updatable cursor using the keys from query 1
But that seems terribly painful.

Need to obtain updateable ResultSet via call to PL/SQL function

I'm using JDBC and the Oracle JDBC driver to call a PL/SQL function that returns a SYS_REFCURSOR. I do this via a CallableStatement object and then cast the output parameter to a ResultSet object. However, I want this ResultSet object I end up with to be updateable. The following code throws an exception stating "Invalid operation for read only resultset: updateString ":
cstmt2 = con.prepareCall("{? = call get_upload_entry_for_update(?)}",
                         ResultSet.TYPE_FORWARD_ONLY,
                         ResultSet.CONCUR_UPDATABLE);
cstmt2.registerOutParameter(1, OracleTypes.CURSOR);
cstmt2.setInt(2, newUploadId);
cstmt2.execute();
rs = (ResultSet) cstmt2.getObject(1);
rs.next();
rs.updateString("UPLOAD_FILENAME", fileName);
// . . .So even though, I create the CallableStatement such that ResultSets should be updateable, it's not allowing me to do any updates. Also, in case you're wondering, inside the PL/SQL function, the query on which the cursor is based is a select statement which does specify "for update" at the end.
I can get it to work as follows using a Statement object that executes the SELECT statement directly instead of a CallableStatement that executes a PL/SQL function:
Statement stmt = con.createStatement(ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_UPDATABLE);
rs = stmt.executeQuery("select UPLOAD_FILENAME, UPLOAD_FILE from rf_upload where upload_id = "+newUploadId+" for update");
rs.next();
rs.updateString("UPLOAD_FILENAME", fileName);
//. . . Although this works, the project I'm working has a goal to encapsulate all SQL into Functions and Stored Procedures so I'd like to get it working that way instead.
So the bottom-line question is: Using the Oracle JDBC driver, how can I call a PL/SQL function in such a way that I can obtain an updateable ResultSet object?
Thanks for any suggestions. I'd be happy to clarify anything that's unclear.

Hmmm...
I'm still scratching my head about this one, just not sure it's doable, but I'll point out something, maybe it will give you a clue...
In your code, you have:
cstmt2 = con.prepareCall("{? = call get_upload_entry_for_update(?)}",
                         ResultSet.TYPE_FORWARD_ONLY,
                         ResultSet.CONCUR_UPDATABLE);I don't think the ResultSet parameters do anything towards your goal of getting an updatable result set via the returned cursor, those parameters affect the result set produced if you were to call:
ResultSet rs2 = cstmt2.executeQuery();and not the result set generated by:
rs = (ResultSet) cstmt2.getObject(1);Futhermore, while the "FOR UPDATE" is almost certainly something you want to do, it also doesn't affect the cursor (I think) but merely locks the affected rows in the DB.
You might try calling rs.getType() and rs.getConcurrency() on the ResultSet you get from getObject, though I suspect they'll merely confirm the bad news that the cursor your getting back isn't right...
You also might try the Oracle-specific getCursor call:
rs = ((OracleCallableStatement)cstmt2).getCursor (1)instead of getObject, though I don't think it will help...
I've been curious enough to dig around through most of my handy references and Oracle's docs and MetaLink and come up mostly empty, although almost 5 years ago Oracle Support said:
" Reference Cursors from a pl/sql stored procedure are not updateable in any language."

How can i get the meta data from database?

Hi, all java and db experts,
I need to write a tool to generate java file which will be used to hold the resultset of a stored procedure of Oracle. Is there any API call or tools to connect to db and then get the meta data of the return cursor instead of reading stored procedure definition on my own?
Please help, thanks a lot.
Hanna

if i execute a Oracle stored procedure, the resultset of a cursor is returned. It's easy to know the meta data at the runtime.
However, could i get the meta data about the resultset of a cursor before runtime? Such as by connecting to the database and ask it about meta data of a specified stored procedure?
Is it feasible?
DatabaseMetaData dbmd = conn.getMetaData();
ResultSet rs = dbmd.getProcedureColumns("", "%", "SP_NAME", "%");
while (rs.next()) {
String colName = rs.getString(4);
int colType = rs.getInt(5);
int colDataType = rs.getInt(6);
int colPrecision = rs.getInt(8);
int colLen = rs.getInt(9);
int colScale = rs.getInt(10);
long defaultValue = rs.getLong(11);
But what i get is a list of stored procedure parameters. In oracle, cursor is IN OUT parameter . How can i get the meta data about the resultset of cursor?

How can i get the data from database & add them as a link

Hi,
how can i get a data from a database(DB2) and that data will be having a file so i should make them as a link.i tried it in jsp .
<%
Class.forName("COM.ibm.db2.jdbc.app.DB2Driver");
Class.forName("COM.ibm.db2.jdbc.net.DB2Driver");
response.setContentType("text/html");
Connection conn = null;
conn = DriverManager.getConnection("jdbc:db2:spintran");
Statement stmt = conn.createStatement();
stmt.executeQuery("set current schema tut");
ResultSet rs = stmt.executeQuery("select * from tutorial");
%>
Type Of the Category : &nbsp&nbsp&nbsp
<%
     while (rs.next())
     String desc = rs.getString(1);
     out.println(desc);
%>
     <A HREF = "<%=desc%>"><%=desc%> </A>
     <%
     %>
but it is not working.how can i link.
thank you.

what is desc? is it the file name ? whats the data type of desc in db? INFILE?
if desc is just the name of the file, then make sure that such a file exists in the proper folder.only then the link works..
that is, if desc is 'a.jpg' then a.jpg should be existing in the same folder as your html is.

How do I get unicode characters out of an oracle.xdb.XMLType in Java?

The subject says it all. Something that should be simple and error free. Here's the code...
String xml = new String("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<x>\u2026</x>\n");
XMLType xmlType = new XMLType(conn, xml);
conn is an oci8 connection.
How do I get the original string back out of xmlType? I've tried xmlType.getClobVal() and xmlType.getString() but these change my \u2026 to 191 (question mark). I've tried xmlType.getBlobVal(CharacterSet.UNICODE_2_CHARSET).getBytes() (and substituted CharacterSet.UNICODE_2_CHARSET with a number of different CharacterSet values), but while the unicode characters are encoded correctly the blob returned has two bytes cut off the end for every unicode character contained in the original string.
I just need one method that actually works.
I'm using Oracle release 11.1.0.7.0. I'd mention NLS_LANG and file.encoding, but I'm setting the PrintStream I'm using for output explicitly to UTF-8 so these shouldn't, I think, have any bearing on the question.
Thanks for your time.
Stryder, aka Ralph

I created analogic test case, and executed it with DB 11.1.0.7 (Linux x86), which seems to work fine.
Please refer to the execution procedure below:
* I used AL32UTF8 database.
1. Create simple test case by executing the following SQL script from SQL*Plus:
connect / as sysdba
create user testxml identified by testxml;
grant connect, resource to testxml;
connect testxml/testxml
create table testtab (xml xmltype) ;
insert into testtab values (xmltype('<?xml version="1.0" encoding="UTF-8"?>'||chr(10)||'<x>'||unistr('\2026')||'</x>'||chr(10)));
-- chr(10) is a linefeed code.
commit;
2. Create QueryXMLType.java as follows:
import java.sql.*;
import oracle.sql.*;
import oracle.jdbc.*;
import oracle.xdb.XMLType;
import java.util.*;
public class QueryXMLType
     public static void main(String[] args) throws Exception, SQLException
          DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
          OracleConnection conn = (OracleConnection) DriverManager.getConnection("jdbc:oracle:oci8:@localhost:1521:orcl", "testxml", "testxml");
          OraclePreparedStatement stmt = (OraclePreparedStatement)conn.prepareStatement("select xml from testtab");
          ResultSet rs = stmt.executeQuery();
          OracleResultSet orset = (OracleResultSet) rs;
          while (rs.next())
               XMLType xml = XMLType.createXML(orset.getOPAQUE(1));
               System.out.println(xml.getStringVal());
          rs.close();
          stmt.close();
3. Compile QueryXMLType.java and execute QueryXMLType.class as follows:
export PATH=$ORACLE_HOME/jdk/bin:$PATH
export LD_LIBRARY_PATH=$ORACLE_HOME/lib
export CLASSPATH=.:$ORACLE_HOME/jdbc/lib/ojdbc5.jar:$ORACLE_HOME/jlib/orai18n.jar:$ORACLE_HOME/rdbms/jlib/xdb.jar:$ORACLE_HOME/lib/xmlparserv2.jar
javac QueryXMLType.java
java QueryXMLType
-> Then you will see U+2026 character (horizontal ellipsis) is properly output.
My Java code came from "Oracle XML DB Developer's Guide 11g Release 1 (11.1) Part Number B28369-04" with some modification of:
- Example 14-1 XMLType Java: Using JDBC to Query an XMLType Table
http://download.oracle.com/docs/cd/B28359_01/appdev.111/b28369/xdb11jav.htm#i1033914
and
- Example 18-23 Using XQuery with JDBC
http://download.oracle.com/docs/cd/B28359_01/appdev.111/b28369/xdb_xquery.htm#CBAEEJDE

How can i get jdbc2.0 compatible driver for my oracle 8.1.5 client/server

Hi ,
I am looking for a driver that is jdbc2.0 compatible.Apaprently the oci and thin drvers that are shipped with oracle8.1.5 do no support scrollable and updateable resultsets. Can i download the oracle8.1.6 jdbc2.0 compatible drivers and use them with my oracle8.1.5 client/server. if so how do i install it?
Please let me know ASAP!!
It is relly frustrating to find a compatibler driver for the older versions since oracle does'nt provide them
poornima

Yes. For OCI driver, you will also have to have Oracle 8.1.6 client installed as well. http://technet.oracle.com/tech/java/sqlj_jdbc/htdocs/jdbc_faq.htm#_1_

How can i get value when the field name is user's defined

Hi,
I have a one java method:
public ResultSet countUserDb(String id) {
ResultSet rs = null;
con = dbcon.connect();
String queryString = ("select count as count from
db_allocation where user_id='"+id+"'");
Statement stmt = con.createStatement();
rs = stmt.executeQuery(queryString);
When i call it in a jsp file.
ResultSet counter =db.countUserDb(request.getParameter("id"));
if(counter.next())
int x=rs.getInt("count");
Tomcat said incorrect column name.How can i get the result set when the field name is user's defined.
Best regards
Ricky

You should give the user defined name in the ResultSet.getXXX method to retrieve the column value.
Example
SQL:
Select ename as employeename from emp;
You should say :
ResultSet.getString("employeename"); to get the value.
Alternatively you can retrieve it using column number:
ResultSet.getString(1);
Chandar

How can i get the value when the field name is user defined

Hi,
I have a one java method:
public ResultSet countUserDb(String id) {
ResultSet rs = null;
con = dbcon.connect();
String queryString = ("select count(*) as count from
db_allocation where user_id='"+id+"'");
Statement stmt = con.createStatement();
rs = stmt.executeQuery(queryString);
When i call it in a jsp file.
ResultSet counter =db.countUserDb(request.getParameter("id"));
if(counter.next())
int x=rs.getInt("count");
Tomcat said incorrect column name.How can i get the result set when the field name is user's defined.
Best regards
Ricky

Hi Ricky
To access pseudo columns you can specify an alias or use the index on the column (e.g. getInt(1)).
Chris
NB: you should use bind variables instead of concatenating the id to the SQL statement.

How do i get the update on my phone to update

how do i get the update on my phone to update

If you an iPhone 3G as shown in your signature, you can not upgrade to iOS 5. The highest possible for that model is 4.2.1.
Stedman

How can we check whether a ResultSet is EMPTY or NOT ?

i'm getting some data inside ResulSet (using JDBC inside Servlet).
now i want to redirect response according to ResultSet...., if ResultSet is EMPTY then on diff page, else on different page...
how can i check whether a ResultSet is empty or not...
i've used next() , wasNull() methods ,,, but not solving the purpose...
thanx in advance...

What you could do is to ask the database fora
record count and check that for zero.
How?????You just do an SQL statement but instead of the list of fields after SELECT you put
SELECT count(*) FROM ...... WHERE .....
That returns a single integer value into the resultset giving the number of matching records currently in the database.
The trouble is you can't be certain that when you subsequently access the records the number won't have changed, because databases are generally accessible to more than one process at a time and some other process might add or delete a record between counting and retrieving or, for that matter, during the process of retrieval.
Also the count is likely to take more time than just doing rs.next() and seeing if you get a record.
Since you seem to be in a servlet environment you should consider doing the database query and the first rs.next() at the top of the servlet/JSP that presents the results and, if there are no records, using getServletContext.getRequestDispatcher(...).forward(request, response) to swich to your error page if it returns false.
So the stucture looks like:
rs = stmt.executeQuery(......);
if(!rs.next())
      getServletContext().getRequestDispatcher("/noresultspage.jsp").forward(request, response);
else {
     do   {
         .... display result data
      } while(rs.next());
    }

IBM DB2 with Updateable ResultSets

I'm working on a cross database application that uses updateable resultsets.
I've run it on mysql and postgres.
And using JTDS and DataDirect I've got SQL Server functionality working.
But now I'm trying to deploy it on DB2 using the UDB dirver. But it seems that it doesn't support Updatable ResultSets.
The driver I'm using came with the DB2 Personal Edition.
Is there another driver by IBM that supports updatable resultsets, or will I be forced inyo finding a thrid party driver for my work?

I believe I was using the type 4 one, but I got a SQL Exception simply saying "Driver not Capable" when I ran it.
The DataDirect one should work, but it is also responsible for connection hijacking.
What that is that once you register the DB2 Driver, and you use DriverManager to get a connection, it assumes that ALL calls to DriverManager.getConnection() are for DB2 connections, even though I use Postgres connections as well. When I try to get a postgres connection, the DB2 driver throws an exception saying that it can't connect to the datasource!

How do I get an updateable ResultSet ?

Similar Messages

Maybe you are looking for