| Hibernate305: delete query fails with "must begin with SELECT or FROM" |
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I have a program, with MANY lines of code, so I will not post the
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I have a GUI program based on swing which contains a JList:
===
this.userTrapList = new JList(this.userTrapListModel);
this.userTrapList.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
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===
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public static final long serialVersionUID = 1L;
public Component getListCellRendererComponent(JList list, Object
value,
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//// HERE I LEFT SOME CODE OUT ////
return label;
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===
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===
Enumeration<TSListObject> en = this.userTrapListModel.elements();
while (en.hasMoreElements()) {
TSListObject tmpTSL = en.nextElement();
/* THIS IS WHERE THE SENDING HAPPENS! */
SnmpPDU pdu = tmpTSL.getSnmpPDU();
TrapSenderModel ts = new TrapSenderModel(pdu, session,
dstHost.getText(), spinnerInt.intValue(), new Debug(1));
ts.addObserver(this);
Thread tsThread = new Thread(ts);
tsl.setHasBeenSent(true);
tsThread.start();
try {
tsThread.join();
Thread.sleep(500);
} catch(InterruptedException ie) {
//Catch nothing
}
}
===
As you can see, the actual sending happens when TrapSenderModel's
method run() is executed, which is the same as tsThread.start();
The TrapSenderModel extends Observable and every time it does
send(pdu) (which is not displayed here), it setChanged() and
notifyObservers(pdu).
In my GUI program, which implements Observer, I have an update()
method:
===
public void update(Observable obs, Object obj) {
System.out.println("Update caught!");
this.userTrapList.repaint();
}
===
Okey... Now that we've got the background covered, lets get down to
the problem:
If my JList contains 9 items, and I send them all, the output to
System.out is a nice print of "Update Caught" every 500 milliseconds,
HOWEVER, the background color of the labels do not update until all
items have been sent.
I would like the background of each cell to change momentaneously, as,
if we have a 0.5 second wait between sending every item, and we send
100 items, that means 50 seconds of not showing any change. This will
probably make the user impatient or worried.
I haev tried several methods to get this working, however, I did never
become best friends with SwingWorker and such....
I'm just thinking that, since the sending happens in a thread of its
own, why cannot the GUI update in its own native thread?
What have I missed? I've spent the entire day here and havn't come up
with anything!
I'm greatful for any help I can get (and yes, I've read manuals,
articles, forums, google and so on).
Yours,
Jonas
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|
| Author |
Message |
david.karr
|
 Posted: 2007-3-27 6:21:00 |
Top |
java-programmer, Hibernate305: delete query fails with "must begin with SELECT or FROM"
I'm using Hibernate 3.0.5, JDK 1.4.2, and Oracle 9i.
I'm following the Hibernate 3.0.5 docs to build a query to delete rows
from a table. My code looks something like this:
-----------------
String hql = "delete ReqField " +
"where fieldName = :fieldName and value
= :value";
Query query =
sessionFactory.getCurrentSession().createQuery(hql);
query.setString("fieldName", fieldName);
query.setString("value", value);
int deletedRows = query.executeUpdate();
-----------------
This fails with:
org.hibernate.QueryException: query must begin with SELECT or FROM:
delete [delete ReqField where fieldName = :fieldName and value
= :value]
What is wrong with my query?
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3rdshiftcoder
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| Posted: 2007-3-27 6:32:00 |
Top |
java-programmer >> Hibernate305: delete query fails with "must begin with SELECT or FROM"
hi-
i use hibernate and the newsgroup over their had some sort of merit system.
i dont have much merit to offer but here is some code from my program
i am working on that might help you see what you did wrong.
this delete query works.
hope it helps,
jim
private void deleteRecord(){
IStructuredSelection selection =
(IStructuredSelection)tableViewer.getSelection();
Register register = (Register)selection.getFirstElement();
if (register == null) {
System.out.println("Please select an item first. ");
return;
}
MessageBox messageBox = new MessageBox(shell, SWT.YES | SWT.NO);
messageBox.setText("Confirmation");
messageBox.setMessage(
"Are you sure to remove the bug with id #"
+ register.transactionid);
if (messageBox.open() == SWT.YES) {
//register.remove(register);
Session session =
HibernateUtil.getSessionFactory().openSession();
Transaction tx = null;
try {
tx = session.beginTransaction();
Query query = session.createQuery("delete from Transact where transactionid
= ?");
query.setLong(0, Long.valueOf(register.transactionid));
int count = query.executeUpdate();
tx.commit();
session.flush();
bugs.remove(table.getSelectionIndex());
tableViewer.setInput(bugs);
tableViewer.refresh();
} catch (HibernateException e) {
if (tx != null) tx.rollback();
displayErrorMsg(e);
} catch(Exception e1){
System.out.println("Error: " + e1.getMessage());
displayErrorMsg(e1);
}finally {
session.close();
}
}
}
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david.karr
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| Posted: 2007-3-27 6:51:00 |
Top |
java-programmer >> Hibernate305: delete query fails with "must begin with SELECT or FROM"
On Mar 26, 3:32 pm, "3rdshiftcoder" <email***@***.com> wrote:
> hi-
>
> i use hibernate and the newsgroup over their had some sort of merit system.
> i dont have much merit to offer but here is some code from my program
> i am working on that might help you see what you did wrong.
> this delete query works.
>
> hope it helps,
> jim
>
> [deleted]
> tx = session.beginTransaction();
> Query query = session.createQuery("delete from Transact where transactionid
> = ?");
> query.setLong(0, Long.valueOf(register.transactionid));
> int count = query.executeUpdate();
> tx.commit();
I don't get it. I changed "delete" in my query to "delete from", but
it still gives me the same error message (although it now shows "from"
in my query.
Are you using Hibernate 3.0.5?
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david.karr
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| Posted: 2007-3-27 7:01:00 |
Top |
java-programmer >> Hibernate305: delete query fails with "must begin with SELECT or FROM"
(I posted this first to c.l.j.p, but I realized it's more appropriate
here.)
I'm following the Hibernate 3.0.5 docs to build a query to delete rows
from a table. My code looks something like this:
-----------------
String hql = "delete ReqField " +
"where fieldName = :fieldName and value
= :value";
Query query =
sessionFactory.getCurrentSession().createQuery(hql);
query.setString("fieldName", fieldName);
query.setString("value", value);
int deletedRows = query.executeUpdate();
-----------------
This fails with:
org.hibernate.QueryException: query must begin with SELECT or FROM:
delete [delete ReqField where fieldName = :fieldName and value
= :value]
What is wrong with my query?
I also tried changing "delete ReqField" to "delete from ReqField", but
that still gets the same error message (with "delete from" in the
message).
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3rdshiftcoder
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| Posted: 2007-3-27 7:15:00 |
Top |
java-programmer >> Hibernate305: delete query fails with "must begin with SELECT or FROM"
> I don't get it. I changed "delete" in my query to "delete from", but
> it still gives me the same error message (although it now shows "from"
> in my query.
>
> Are you using Hibernate 3.0.5?
>
no. i am using Hibernate 3.2.0beta8.
i use pojos with annotations.
delete [delete ReqField where fieldName = :fieldName and value
= :value]
String hql = "delete ReqField " +
"where fieldName = :fieldName and value
= :value";
it has to be delete from TABLE instead of delete from ReqField
or really the representation of the table (the related pojo object).
i think ReqField might be a typo and i apologize if that is the case.
if you have any more questions, i can try to help but contact me
at email***@***.com as this is off-topic for the group.
having said that, i hope someone in the group offers to help you here
even though it is off topic. i am not a hibernate expert. not even close.
later
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3rdshiftcoder
|
| Posted: 2007-3-27 7:17:00 |
Top |
java-programmer >> Hibernate305: delete query fails with "must begin with SELECT or FROM"
> I don't get it. I changed "delete" in my query to "delete from", but
> it still gives me the same error message (although it now shows "from"
> in my query.
>
> Are you using Hibernate 3.0.5?
>
no. i am using Hibernate 3.2.0beta8.
i use pojos with annotations.
delete [delete ReqField where fieldName = :fieldName and value
= :value]
String hql = "delete ReqField " +
"where fieldName = :fieldName and value
= :value";
it has to be delete from TABLE instead of delete from ReqField
or really the representation of the table (the related pojo object).
i think ReqField might be a typo and i apologize if that is the case.
if you have any more questions, i can try to help but contact me
at email***@***.com as this is off-topic for the group.
having said that, i hope someone in the group offers to help you here
even though it is off topic. i am not a hibernate expert. not even close.
later
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joeNOSPAM@BEA.com
|
| Posted: 2007-3-27 8:31:00 |
Top |
java-programmer >> Hibernate305: delete query fails with "must begin with SELECT or FROM"
On Mar 26, 4:01 pm, "david.karr" <email***@***.com> wrote:
> (I posted this first to c.l.j.p, but I realized it's more appropriate
> here.)
>
> I'm following the Hibernate 3.0.5 docs to build a query to delete rows
> from a table. My code looks something like this:
>
> -----------------
> String hql = "delete ReqField " +
> "where fieldName = :fieldName and value
> = :value";
> Query query =
> sessionFactory.getCurrentSession().createQuery(hql);
> query.setString("fieldName", fieldName);
> query.setString("value", value);
>
> int deletedRows = query.executeUpdate();
> -----------------
>
> This fails with:
>
> org.hibernate.QueryException: query must begin with SELECT or FROM:
> delete [delete ReqField where fieldName = :fieldName and value
> = :value]
>
> What is wrong with my query?
>
> I also tried changing "delete ReqField" to "delete from ReqField", but
> that still gets the same error message (with "delete from" in the
> message).
I guess you should not use a query object for an update, insert or
delete,
just queries.
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david.karr
|
| Posted: 2007-3-27 10:08:00 |
Top |
java-programmer >> Hibernate305: delete query fails with "must begin with SELECT or FROM"
On Mar 26, 5:31 pm, "email***@***.com" <email***@***.com>
wrote:
> On Mar 26, 4:01 pm, "david.karr" <email***@***.com> wrote:
>
>
>
> > (I posted this first to c.l.j.p, but I realized it's more appropriate
> > here.)
>
> > I'm following the Hibernate 3.0.5 docs to build a query to delete rows
> > from a table. My code looks something like this:
>
> > -----------------
> > String hql = "delete ReqField " +
> > "where fieldName = :fieldName and value
> > = :value";
> > Query query =
> > sessionFactory.getCurrentSession().createQuery(hql);
> > query.setString("fieldName", fieldName);
> > query.setString("value", value);
>
> > int deletedRows = query.executeUpdate();
> > -----------------
>
> > This fails with:
>
> > org.hibernate.QueryException: query must begin with SELECT or FROM:
> > delete [delete ReqField where fieldName = :fieldName and value
> > = :value]
>
> > What is wrong with my query?
>
> > I also tried changing "delete ReqField" to "delete from ReqField", but
> > that still gets the same error message (with "delete from" in the
> > message).
>
> I guess you should not use a query object for an update, insert or
> delete,
> just queries.
So how can you delete rows from a query? I tried the "deprecated"
form of "Session.delete(querystr)", but that doesn't work either (I
can't remember what failed there).
I guess I'll have to make sure the session is not in auto-commit and
iterate through all the objects manually, calling "delete()" on them.
I hope that will work.
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xss and all other sorts of system hacking. With encrypted files the
information in the files are still protected, even in the case a trojan
sends a file by email to somebody on the internet. Enctrypted
filesystems only help protect the integrity of the local system and the
disk while the system/disk is not running. Encrypted files help protect
the information during use as well.
I know there are many other issues as well, I'll be working throuhg it.
here is the list of the issues of most importance:
- en-/decryption support in
- ide / editor
- compiler
- code searching tools
- disassembler/debugger
- remove excess information from class files
- how to handle static content files
- html, css, jsp, configuration files for libraries and frameworks etc
- if class files are also encrypted
- en-/decryption support in the jvm runtime, covers tomcat, jboss etc.
- possible encrypted jar/war/ear files etc
- debugger
- information about classes must also be protected from prying
eyes who have obtained the class files and using the debugger to get
information.
- 9
- Error passing Element to web serviceI'm upgrading from WebLogic 6.1 to WebLogic 8.1 SP 4.
We used to specify weblogic.soap.http.SoapInitialContextFactory and
weblogic.soap.encoding.factory to lookup the web service in the client.
Well, the SoapInitialContextFactory and CodecFactory classes are no
longer around. So now I've used clientgen to generate the stubs and
here is my client code:
MyWebService service = new MyWebService_Impl(wsdlurl);
MyWebServicePort port = service.getMyWebServicePort();
Element result = port.processIt(theElement);
However, I get the following error calling processIt:
java.rmi.RemoteException: web service invoke failed:
javax.xml.soap.SOAPException: failed to serialize interface
org.w3c.dom.Element weblogic.xml.schema.binding.SerializationException:
Failed to serialize Document due to the following error
weblogic.xml.stream.XMLStreamException: The local name of an attribute
cannot be null
...
Caused by: weblogic.xml.schema.binding.SerializationException: Failed
to serialize Document due to the following error
weblogic.xml.stream.XMLStreamException: The local name of an attribute
cannot be null
at
weblogic.xml.schema.binding.internal.builtin.DocumentCodec.serialize(DocumentCodec.java:76)
...
Here's the schema and xml file:
<?xml version="1.0" encoding="UTF-8"?>
<schema xmlns="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://myproject.org/myproject_test.xsd"
xmlns:myproject_test="http://myproject.org/myproject_test.xsd"
elementFormDefault="qualified">
<element name="TEST">
<complexType>
<sequence>
<element ref="TEST_ID"/>
</sequence>
</complexType>
</element>
</complexType>
<element name="TEST_ID" type="string"/>
</schema>
<?xml version="1.0" encoding="UTF-8"?>
<TEST xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://myproject_test.xsd"
xsi:schemaLocation="http://myproject.org/myproject_test.xsd"
file:///N:/myproject/metadata/myproject_test.xsd">
<TEST_ID>ABCD1234</TEST_ID>
</TEST>
I've been testing with this bare minimum schema so that I can change
the namespaces and other things easily. The one and only thing that's
made a difference is when I take out the namespace stuff from the xml
file, it does get sent to the server. I.E.:
<?xml version="1.0" encoding="UTF-8"?>
<TEST>
<TEST_ID>ABCD1234</TEST_ID>
</TEST>
However, I can't leave it like that because the server doesn't know
what to do with it. Also, when the server tries to send the response,
it gets the same error as above.
weblogic.xml.stream.XMLStreamException: The local name of an attribute
cannot be null
at
weblogic.xml.babel.adapters.DOMAdapter.adaptAttribute(DOMAdapter.java:113)
at
weblogic.xml.babel.adapters.DOMAdapter.adaptElement(DOMAdapter.java:147)
...
javax.xml.soap.SOAPException: failed to serialize interface
org.w3c.dom.Element weblogic.xml.schema.binding.SerializationException:
Failed to serialize Document due to the following error
weblogic.xml.stream.XMLStreamException: The local name of an attribute
cannot be null
The web service also returns an Element, but it's a different type from
a different schema, which I haven't touched. So the server is having
the same problem as the client.
If I change the web service to receive and return only strings, it
works fine. But I haven't been able to figure out why it won't work
for the Element. Does this sound like a problem with my WebLogic
configuration, the schemas/xml files, the web service, the client? Is
there a way to tell what attribute it is complaining about?
Thanks,
Christy
- 10
- Response cache on the application serverIs it a good thing to cache the search result?
The metadata for our system can be as much as 100,000
I am trying to enable the response cache on the web server.
However, I am thinking about the problem i might meet.
When you cache the search result, is it possible the other
person throw the same condiiton and see the same result?
With our system there some security set for each row, so
if this happens there is a security leak.
MD
- 11
- JMF video frame sizeI need to know dimension of the media file played by
javax.media.bean.playerbean.MediaPlayer
I use the code you can see below:
FormatControl formatControl = (FormatControl)
this.mediaPlayer.getControl ("javax.media.control.FormatControl");
VideoFormat videoFormat = (VideoFormat) formatControl.getFormat();
return videoFormat.getSize();
mediaPlayer is known object from another class.
But I get formatControl == null.
It's very very strange, but just one time this code did work.
So I have no idea ... Someone else?
- 12
- 13
- Forcing swing gui to be drawnHey, right now I have a program that analyzes an EKG when a button is
clicked. I want to pop up a progress bar in a new frame to show how far
it is, but I'm having problems. I can create the frame, and it will
appear, but it won't draw the progress bar until it is done executing
all of the other commands.
I ahve tried opening the frame with a separate thread, but it resulted
in the same problem. I guess there must be some draw queue that is on a
low priority, but I really have no idea why it isn't working.
Any help would be great... I show this at a science fair in 2 days.
Thanks!
-Thomas
- 14
- Java Chat Recording.Hi,
A website I use has a chat room and it's chatter-side interface is a Java
application. The comments chatters post come thick and fast and, although
there is a scoll bar, it's no good scrolling down to see comments missed,
as, as soon as a new comment is posted, all the comments scroll up to it.
There is no cut-and-paste/recording facility. As it's possible to scroll
up and down the comments, there must be somewhere where the comments are
held. Would this be just in some sort of video buffer, a
constantly-appended file on my PC's disk drive or just in memory? Is there
any way to record the conversations? Have the output from the Java
application redirected to a file, etc?
Thanks in advance.
Yours,
Gary Hayward.
- 15
- US-CA: Senior Software Engineers (Java) wanted Immediately!Cataphora is an award winning software company providing technology and
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your creativity and versatility will be focused on a wide variety of
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This is an excellent growth opportunity for the right candidate in a
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Required Skills
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