Problem Deleting a row from the bottom level of a tree binding

We have the following requirement: To allow user to delete an item on an order (which is the lowest level node in tree) by updating the quantity textbox to zero in a jsp page.
We display a listing of Ad Items for a Department with quantity textboxes. The user enters quantities and clicks on âadd to my orderâ button. The items in which they have entered quantities for are persisted to a database table. The user is then directed to an order summary screen (shown below) where it displays the items and quantities for which they have placed an order for. The quantities are updateable. If the user changes a quantity to zero, we want to remove that item from the Order Items View Object (all VOs described are Entity based).
Update Screen - click here (http://members.awiweb.com/images/adspl_summary.jpg)
We are using a 3-level tree binding
-- Department Level
---- Ad Items Level (items that they can order)
------ Order Items Level (items that they have ordered)
Attributes on the Order Items View Object:
ConfoOrderDeptId (key attribute)
Itemcode (key attribute)
DeliveryDate (key attribute)
Quantity
Customercode
Custom method in the app module:
//Gets the VO for the Order Items Level
ConfoOrderItemEOVOImpl confoOrderItem = (ConfoOrderItemEOVOImpl)getConfoOrderItemEOVO1();
//Creates an Object from the values being passed into the custom method.
//There is a value for each key attribute in the Order Items VO
Object [] myKeyObj = new Object[]{confoOrderDeptId,itemcode,date};
Key myKey = new Key(myKeyObj);
Row [] orderItemRow = confoOrderItem.findByKey(myKey,1);
//newQty is updated quantity
if ("0".equals(newQty))
orderItemRow[0].remove();
else
     orderItemRow[0].setAttribute("Quantity",newQty);
The updates (setAttribute) is working fine. The deletes (.remove()) is throwing a null pointer exception (see stack trace below).
We also tried overloading the setQuantity method in the RowImple class and called this.remove() if the quantity being passed in was zero, but we got the same null pointer result.
04/08/27 16:57:29 java.lang.NullPointerException
04/08/27 16:57:29      at oracle.jbo.uicli.binding.JUCtrlHierNodeBinding.myUpdateValuesFromRows(JUCtrlHierNodeBinding.java:419)
04/08/27 16:57:29      at oracle.jbo.uicli.binding.JUCtrlHierNodeBinding.updateRowDeleted(JUCtrlHierNodeBinding.java:326)
04/08/27 16:57:29      at oracle.jbo.uicli.binding.JUIteratorBinding.rowDeleted(JUIteratorBinding.java:220)
04/08/27 16:57:29      at oracle.jbo.common.RowSetHelper.fireRowDeleted(RowSetHelper.java:222)
04/08/27 16:57:29      at oracle.jbo.server.ViewRowSetIteratorImpl.deliverRowDeletedEvent(ViewRowSetIteratorImpl.java:3026)
04/08/27 16:57:29      at oracle.jbo.server.ViewRowSetIteratorImpl.notifyRowDeleted(ViewRowSetIteratorImpl.java:2915)
04/08/27 16:57:29      at oracle.jbo.server.ViewRowSetImpl.notifyRowDeleted(ViewRowSetImpl.java)
04/08/27 16:57:29      at oracle.jbo.server.ViewObjectImpl.notifyRowDeleted(ViewObjectImpl.java:6565)
04/08/27 16:57:29      at oracle.jbo.server.ViewObjectImpl.notifyRowDeleted(ViewObjectImpl.java:6603)
04/08/27 16:57:29      at oracle.jbo.server.QueryCollection.removeRow(QueryCollection.java:2118)
04/08/27 16:57:29      at oracle.jbo.server.QueryCollection.afterRemove(QueryCollection.java:2083)
04/08/27 16:57:29      at oracle.jbo.server.ViewObjectImpl.sourceChanged(ViewObjectImpl.java:7770)
04/08/27 16:57:29      at oracle.jbo.server.EntityCache.sendEvent(EntityCache.java:616)
04/08/27 16:57:29      at oracle.jbo.server.EntityCache.deliverEntityEvent(EntityCache.java:642)
04/08/27 16:57:29      at oracle.jbo.server.EntityCache.notifyStateChange(EntityCache.java:763)
04/08/27 16:57:29      at oracle.jbo.server.EntityImpl.setState(EntityImpl.java:2875)
04/08/27 16:57:29      at oracle.jbo.server.EntityImpl.remove(EntityImpl.java:5548)
04/08/27 16:57:29      at oracle.jbo.server.ViewRowImpl.doRemove(ViewRowImpl.java:1773)
04/08/27 16:57:29      at oracle.jbo.server.ViewRowImpl.remove(ViewRowImpl.java:1813)
04/08/27 16:57:29      at com.awiweb.om.model.dataaccess.ConfoOrderItemEOVORowImpl.setQuantity(ConfoOrderItemEOVORowImpl.java:112)
04/08/27 16:57:29      at com.awiweb.om.model.services.ConfoOrderingAppModuleImpl.updateConfoOrderItemWithValues(ConfoOrderingAppModuleImpl.java:247)
04/08/27 16:57:29      at com.awiweb.om.view.CurrentOrderSummaryAction.onUpdateCurrentOrder(CurrentOrderSummaryAction.java:39)
04/08/27 16:57:29      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
04/08/27 16:57:29      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java)
04/08/27 16:57:29      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
04/08/27 16:57:29      at java.lang.reflect.Method.invoke(Method.java)
04/08/27 16:57:29      at oracle.adf.controller.lifecycle.PageLifecycle.handleEvent(PageLifecycle.java:512)
04/08/27 16:57:29      at oracle.adf.controller.struts.actions.StrutsPageLifecycle.handleEvent(StrutsPageLifecycle.java:211)
04/08/27 16:57:29      at oracle.adf.controller.lifecycle.PageLifecycle.processComponentEvents(PageLifecycle.java:447)
04/08/27 16:57:29      at oracle.adf.controller.struts.actions.DataAction.processComponentEvents(DataAction.java:246)
04/08/27 16:57:29      at oracle.adf.controller.struts.actions.DataAction.processComponentEvents(DataAction.java:440)
04/08/27 16:57:29      at oracle.adf.controller.lifecycle.PageLifecycle.handleLifecycle(PageLifecycle.java:114)
04/08/27 16:57:29      at oracle.adf.controller.struts.actions.DataAction.handleLifecycle(DataAction.java:233)
04/08/27 16:57:29      at com.awiweb.om.ext.AWIDataAction.handleLifecycle(AWIDataAction.java:191)
04/08/27 16:57:29      at oracle.adf.controller.struts.actions.DataAction.execute(DataAction.java:163)
04/08/27 16:57:29      at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
04/08/27 16:57:29      at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
04/08/27 16:57:29      at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1485)
04/08/27 16:57:29      at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:527)
04/08/27 16:57:29      at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
04/08/27 16:57:29      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
04/08/27 16:57:29      at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
04/08/27 16:57:30      at oracle.security.jazn.oc4j.JAZNFilter.doFilter(Unknown Source)
04/08/27 16:57:30      at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:16)
04/08/27 16:57:30      at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:228)
04/08/27 16:57:30      at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:600)
04/08/27 16:57:30      at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
04/08/27 16:57:30      at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:790)
04/08/27 16:57:30      at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:270)
04/08/27 16:57:30      at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
04/08/27 16:57:30      at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)
04/08/27 16:57:30      at java.lang.Thread.run(Thread.java:534)

This looks like a bug in TreeBinding. Please file this as a bug/tar with OracleSupport with your reproducible testcase (or steps to reproduce). Thanks.

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     at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:1261)
     at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1419)
     at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3752)
     at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3806)
     at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1667)
     at oracle.jbo.server.OracleSQLBuilderImpl.doEntitySelectForAltKey(OracleSQLBuilderImpl.java:869)
Please give suggestions...
Thanks
Kanika

Hi,
First Run Application module and confirm whether model project is OK,Cause for the Error is Caused by: java.sql.SQLSyntaxErrorException: ORA-00972: identifier is too long
check:
Issues with table/column name length
identifier is too long
I guess following error occurred because above issue
JBO-26080: DMLException
Cause: An unexpected exception occurred while executing the SQL to fetch data for an entity instance or lock it.
Action: Fix the cause for the SQLException in the details of this exception.
See:
http://download.oracle.com/docs/cd/A97337_01/ias102_otn/buslog.102/bc4j/jboerrormessages.html#26080Hope you will helpful

Deleting a row from a table containing CLOB as one of the columns

When i delete a row from a table which contains a CLOB (internal clob) i.e. CLOB or BLOB column, Will the CLOB data will also be deleted ? I understand that what exactly stored in the CLOB column is the clob locator which points to the actual data.
So, when I delete this row, the clob locator will be deleted, but will the actual data what this locator is pointing to is also deleted ??? if not what is the process to delete the data the locator is pointing to when the row containing the locator is deleted ? If this is not happening then the actual data might become an orphan data which nobody has access to, will automatic garbage cleaning occurs on a frequent intravels to delete unaddressed data residing on the database server ?
Thanks in advance for the help, can email me at [email protected] alternatively.
Regards,
Srinivasa C.

Michael,
Thanks very much for your inputs, here are the results i got when i tried the way you explained in your answer, the TRUNCATE command made the actual size back to normal, but the delete is not the same, so, how can i delete the data that a particular clob locator may point to ?
truncate would delete all the rows of the table, which might not serve my purpose, i would like to delete a row and also it's associated clob data from the database! is there anyway to do this ?
is there any limitation on the ool_sample size? i am basically a c++ programmer, i am looking for some function like FREE which would free the allocated memory to the clob once the locator is deleted.
your help is greatly appreciated - Thanks!
:-) Srini.
==========================
My Results:
==========================
SQL> create table sample (
2 id integer primary key,
3 the_data CLOB default empty_clob() )
4 lob (the_data) store as ool_sample;
Table created.
SQL> select segment_name, round(sum(bytes)/1024, 2) || 'K' as sotrage_consumed
2 from user_segments
3 where segment_name in ('SAMPLE', 'OOL_SAMPLE')
4 group by segment_name;
SEGMENT_NAME
SOTRAGE_CONSUMED
OOL_SAMPLE
20K
SAMPLE
10K
SQL> select count(*) from sample;
COUNT(*)
0
SQL> begin
2 for i in 1..1000
3 loop
4 insert into sample values (i, RPAD('some data', 4000) );
5 end loop;
6 end;
7 /
PL/SQL procedure successfully completed.
SQL> select segment_name, round(sum(bytes)/1024, 2) || 'K' as sotrage_consumed
2 from user_segments
3 where segment_name in ('SAMPLE', 'OOL_SAMPLE')
4 group by segment_name;
SEGMENT_NAME
SOTRAGE_CONSUMED
OOL_SAMPLE
6420K
SAMPLE
70K
SQL> delete sample;
1000 rows deleted.
SQL> select segment_name, round(sum(bytes)/1024, 2) || 'K' as sotrage_consumed
2 from user_segments
3 where segment_name in ('SAMPLE', 'OOL_SAMPLE')
4 group by segment_name;
SEGMENT_NAME
SOTRAGE_CONSUMED
OOL_SAMPLE
6420K
SAMPLE
70K
SQL> commit;
Commit complete.
SQL> select segment_name, round(sum(bytes)/1024, 2) || 'K' as sotrage_consumed
2 from user_segments
3 where segment_name in ('SAMPLE', 'OOL_SAMPLE')
4 group by segment_name;
SEGMENT_NAME
SOTRAGE_CONSUMED
OOL_SAMPLE
6420K
SAMPLE
70K
SQL> begin
2 for i in 1..1000
3 loop
4 insert into sample values (i, rpad('some data', 4000));
5 end loop;
6 end;
7 /
PL/SQL procedure successfully completed.
SQL> select segment_name, round(sum(bytes)/1024, 2) || 'K' as sotrage_consumed
2 from user_segments
3 where segment_name in ('SAMPLE', 'OOL_SAMPLE')
4 group by segment_name;
SEGMENT_NAME
SOTRAGE_CONSUMED
OOL_SAMPLE
9616K
SAMPLE
70K
SQL> truncate table sample;
Table truncated.
SQL> select segment_name, round(sum(bytes)/1024, 2) || 'K' as sotrage_consumed
2 from user_segments
3 where segment_name in ('SAMPLE', 'OOL_SAMPLE')
4 group by segment_name;
SEGMENT_NAME
SOTRAGE_CONSUMED
OOL_SAMPLE
20K
SAMPLE
10K

HT5858 When I swipe up from the bottom of the screen to use control center I am not able to use the music controls for music or podcasts and music controls do not work on the lock screen either is anybody else having this problem???????

When I swipe up from the bottom of the screen to use control center I am not able to use the music controls for music or podcasts and music controls do not work on the lock screen either is anybody else having this problem???????

Not really sur easy you would be having that problem. Mine works. You might try RESET DEVICE
Hold down the Sleep/Wake button and the home button together until the apple logo appears (ignore the ON/OFF slider) then let both buttons go and wait for device to restart (no data will be lost). Then try again and see if it makes a difference

Hello, seems to be a glitch with an icon on my desktop row at the bottom

Hi. The row at the bottom of the screen that has all of the different icons appears to have a visual glitch for my macbook pro.
When I first got the computer I deleted (dragged an icon away from the row and it poofs away) several unwanted icons. The one all the way on the left which acted as if you had just clicked macintosh hd was poofed away, however when I turn on my computer it has glitched its way to a set location on the screen.
In the bottom near-left edge the icon is sitting there and is not a part of the icon row. In fact when I add a bunch of icons to grow the row the real icons just kind of gow on top of it, as if the smiling face thing was just a normal part of the screen.
Sorry for being hard to decipher and vague but I hope my problem is understood as it is certainly quite bothersome.
Thanks a bunch for any help.

Actually...if you read the original poster's first message carefully...you will see that he or she has managed to get an icon (probably an alias to the Finder) on the desktop BEHIND the dock and doesn't know how to get at it.
So... To solve that problem...
1) Go to the Apple Menu, Select Dock... Then Position on Left.
2) Right on the icon on your desktop (it should stay while your 'icon row' - that's the Dock - has moved to the left side of your screen) and select "Move to Trash". If you don't have an external mouse, press the CTRL key and click; the same menu will appear.
3) Go back to the Apple Menu, Select Dock... Then Position on Bottom.
Problem solved...

How to delete a row in the table in servlets

I have met a problem in deleting a row in table using servlets.
My table looks like this:
ID Name Type
12 Milienium S
15 USIA O
My code looks like this:
String query = "SELECT * FROM tb_Funds";
rs = statement.executeQuery(query);
while(rs.next()) {
StdID=rs.getString("FundID");
StdName=rs.getString("Name");
StdType=rs.getString("Type");
out.print("<td><INPUT TYPE=TEXT NAME=
myName VALUE=" + StdID + "></td>");
out.print("<td>" + StdName + "</td>");
out.print("<td>" + StdType + "</td>");
buf.append("<td>" + "<INPUT TYPE=SUBMIT
NAME=Delete VALUE=DELETE>" + "</td></tr>");
There is a delete button in every row. May I know how to delete the row that I want by getting the ID from the table and delete it from the database.

Deleting from a table is simple -> delete from tb_funds where id = <value>. Obviously replace <value> with the appropriate ID or use a bind variable (a ?) and prepared statements.
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