Problem with Rowsets

Hi folks
I am trying to implement RowSet interface but I am facing problem in implementing CachedRowSet and WebRowSet. Can someone tell me form where I can get some code for these and also some example for running that code.
Thanx in advance
Nitin

You asked for some sample code :
http://www.geocities.com/sundar_rajan_in/java/servlets/databasecaching.html

Similar Messages

Still problems with RowSet Sun implementation

In a topic I previoulsy posted I shown my inability to make JoinRS work:
http://forum.java.sun.com/thread.jsp?thread=523969&forum=48&message=2540269
I was told the new realease, due to be out sometime in June, would have included corrections for my problem.
Do you have any info about the new realease of Rowset RI by Sun?
I downloaded JDBC RowSet Implementations 1.0 JWSDP 1.4 Co-Bundle, hoping that would be it, but the RI included in it is still 1.0 (though the jar lib files have different size)
Please help me with any info you can provide. My university thesis would greatly benefit from it.
Thank you in advance.

Yes Neo, sometime in the next two weeks, we will release it.
There is some formalities to be done as soon as they are done we will be out.
Please saty tuned. :)

Problem with rowset query

hi,
i work whith oracle 8.1.7 . when i define this query
SELECT ALL CREATOR.ARTICLE.SOC_CODE,
LIBELLE.ACT_LIB(ARTICLE.ACT_CODE) BR_ACT_LIB,
LIBELLESYSTBLN_LIB('LGN_CODE',ARTICLE.LGN_CODE) LNG_LIB,
substr(LIBELLE.MRQ_LIB(ARTICLE.MRQ_CODE),1,35) MRQ_LIB,
and click run query i have the folowing error encountered"(" at line 2 ...
if i remove "LIBELLESYSTBLN_LIB('LGN_CODE',ARTICLE.LGN_CODE) "
the query run normally.
LIBELLE and LIBELLESYSTBLN_LIB are stored packages.
the problem is the constant argument 'LGN_CODE'
when i run the same query with other client tools, it succeful.
thanks in advance

Hi Jim,
thanks for your replay.
I use creator early access 2 and now the ide don't start, it stop in starting modules phase(i uninstall jsc, download new version, rename the folder that contain the project. Nothing change).
I create query by drag and drop the table, i open the query editor and i add the two lines
if i add only the line that no contain the constant it work fine
i have two information message (parsing query) if i click i found '' added at the end of constant like this LIBELLESYSTBLN_LIB('LGN_CODE''',ARTICLE.LGN_CODE).
Thanks

Types problem with rowset control and generated pageflow

Hello,
I made a rowset control from a flat table. Some of the columns where DATE type.
In the associated pageflow, it generated a Databaseform bean and for the dates, it used a timestamp type.
Which format should I use in the input of the form field ??
each time i submit, the value in the action form is null ...
what to do ? what should I modify in the rowset control, if I want to deal with string values til the real insert ?
Thank you indeed

Hello,
I made a rowset control from a flat table. Some of the columns where DATE type.
In the associated pageflow, it generated a Databaseform bean and for the dates, it used a timestamp type.
Which format should I use in the input of the form field ??
each time i submit, the value in the action form is null ...
what to do ? what should I modify in the rowset control, if I want to deal with string values til the real insert ?
Thank you indeed

Problem with populating ROWSET

Hi ,
I have a problem with ROWSET.
I have a table with 6 columns and approximately more than 200 records.
I reterive them in a ResultSet and resultset gets populated.
But I populate Rowset with that ResultSet then it hangs for atleast 1 minuate and then it comes back to its original state.
Can anyone have thge idea why it happens....?
Is therer any issue with the Rowset ?
Why it takes too much time to populate the rowset..?
Thanks
Tariq

Here it is....
CachedRowSetImpl crs = new CachedRowSetImpl();
Statement stmt = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);
ResultSet result = stmt.executeQuery(sql); // Here we have 250 records in ResultSet
crs.populate(result); // This is the problem. This line takes atleast 1min to executeAny solution u gurus have ....

Problem with Master -Details forms in seperate pages

Hi ,
Below is the scenario:
I have Institution and a department tables where there is a foreign key relation between the tables. So now i have two entity objects for the 2 tables and 2 view objects(DepartmentView,InstitutionView) from the entity objects.
I also have a view link between them.I made a master-detail relation between them in the datamodel using the view link.So my appmodule now has getters for the department view,institution view and viewlink.
I now have a jsp page "createInstitution.jsp" which contains a form for the institution , i have a "next" button on the same jsp which calls a method in my appmodule class .This methods just inserts the record into the Institution view. In this method i am able to see what the user entered in the form by getting the viewrow record like the below code :
InstitutionViewRowImpl newInstitutionRow=(InstitutionViewRowImpl) getInstitutionView().first();
The next button navigates to the next page "listDepartments.jsp" which contains the list of departments that are added. This page has a button "Add Department" which takes to to the "addDepartment.jsp" page which shows a form for adding a department. This page also has a button which calls a method in app module class. The method just inserts the record into the view(DepartmentView)
Here when i say
DepartmentViewRowImpl newDepartmentRow=(DepartmentViewRowImpl ) getDepartmentView().first();
the newDepartmentRow is null.
Also on the addDepartment.jsp form , i had used a output field to see what the parent id was and interestingly the parent id is 75 which is first institution in the database. It should have been "-10" , a temporary id assigned.
Can someone please tell me what is the problem with my approach?

I don't understand why you are using a method on your button to insert the record into the table - An Oracle ADF Form will do the insert for you by default without any coding.
See the create pages in these tutorials:
http://www.oracle.com/technology/products/jdev/11/cuecards/adf_set_21/ccset21_ALL.html
http://www.oracle.com/technology/obe/obe11jdev/11/dev_ui/developuserinterface.html#t2s5
The method that you are calling just returns the first record in the rowset - I don't see how it has anything to do with actually inserting the data into the table.

Problem with xsql:query

Hi,
I'm having a problem with the following simple XSQL document:
<?xml version="1.0"?>
<xsql:query connection="xsqltest" xmlns:xsql="urn:oracle-xsql">
SELECT concat(concat(forename, ' '), surname) AS Name
, d.name AS Department
FROM emp, dept d
WHERE emp.dept_no = d.id
ORDER BY surname
</xsql:query>When I transform this using the command line xsql, it produces the following (as expected):
<?xml version = '1.0'?>
<ROWSET>
<ROW num="1">
<Name>Cindy Delight</Name>
<Department>Accounting</Department>
</ROW>
<ROW num="2">
<Name>Adrian Rue</Name>
<Department>Product Development</Department>
</ROW>
<ROW num="3">
<Name>Dwight Dweeb</Name>
<Department>Accounting</Department>
</ROW>
</ROWSET>However, when I access the same page through my browser, the output is:
<?xml version = '1.0'?>
<xsql:query>
SELECT concat(concat(forename, ' '), surname) AS Name
, d.name AS Department
FROM emp, dept d
WHERE emp.dept_no = d.id
ORDER BY surname
</xsql:query>(this is the same as the input document, except the namespace declaration has been stripped out, making the XML invalid).
I've tried including other xsql tags in the same document (e.g. xsql:include-xsql), these seem to work fine. Also, if I change the connect details, XSQL fails as expected, so it would appear xsql is being invoked by Tomcat (.xsql is mapped to the servlet), and XSQL successfully connecting to the database.
My setup is slightly unusual: I'm trying to use XSQL 1.0.4.1 with MySQL 3.23.32 using the mm.mysql 2.0.4 JDBC drivers. This is running on Tomcat 3.2.1 with JDK 1.3 (OJVM 1.2.330). But, since it works with the command line xsql, I'm at a loss as to why it's misbehaving through the servlet engine only... any ideas?
Steve

Hmm,
Even more confusing - the same .xsql document works fine with WebToGo - so I guess this is a Tomcat problem, somehow... Just can't understand why xsql:include-xsql works and xsql:query doesn't.
Steve

Problems with MySQL in JSC 2

i have problem with MySQL i have a driver i added it in to servers list and i made tests with data source everythink is ok, i see tables but when i drop a table from data source on table componenet(or other) i have errors nullPointerExpection at: (here is very long list of java classes. when i click "view data" of table in data source everythink works, only in components it doesn't. Can sombody help me please. I hope you understood my problem if not i will try to explain it once again.

i get his Exception:
A java.lang.NullPointerException exception has occurred.
Please report this at http://www.netbeans.org/issues.html,
including a copy of your messages.log file as an attachment.
The messages.log file is located in your C:\Documents and Settings\Leszczyński\.Creator\2_0\var\log folder.
here are details:
java.lang.NullPointerException
     at com.mysql.jdbc.PreparedStatement.asSql(PreparedStatement.java:565)
     at com.mysql.jdbc.PreparedStatement.asSql(PreparedStatement.java:507)
     at com.mysql.jdbc.PreparedStatement.toString(PreparedStatement.java:3290)
     at java.lang.String.valueOf(String.java:2577)
     at java.lang.StringBuffer.append(StringBuffer.java:220)
     at com.mysql.jdbc.trace.Tracer.printParameters(Tracer.aj:240)
     at com.mysql.jdbc.trace.Tracer.printEntering(Tracer.aj:167)
     at com.mysql.jdbc.trace.Tracer.entry(Tracer.aj:126)
     at com.mysql.jdbc.trace.Tracer.ajc$before$com_mysql_jdbc_trace_Tracer$1$f51c62b8(Tracer.aj:45)
     at com.mysql.jdbc.Connection.registerStatement(Connection.java)
     at com.mysql.jdbc.Statement.<init>(Statement.java:190)
     at com.mysql.jdbc.PreparedStatement.<init>(PreparedStatement.java:432)
     at com.mysql.jdbc.ServerPreparedStatement.asSql(ServerPreparedStatement.java:343)
     at com.mysql.jdbc.PreparedStatement.asSql(PreparedStatement.java:507)
     at com.mysql.jdbc.ServerPreparedStatement.toString(ServerPreparedStatement.java:2306)
     at java.lang.String.valueOf(String.java:2577)
     at java.lang.StringBuffer.append(StringBuffer.java:220)
     at com.mysql.jdbc.trace.Tracer.printParameters(Tracer.aj:240)
     at com.mysql.jdbc.trace.Tracer.printEntering(Tracer.aj:167)
     at com.mysql.jdbc.trace.Tracer.entry(Tracer.aj:126)
     at com.mysql.jdbc.trace.Tracer.ajc$before$com_mysql_jdbc_trace_Tracer$1$f51c62b8(Tracer.aj:45)
     at com.mysql.jdbc.Connection.registerStatement(Connection.java)
     at com.mysql.jdbc.Statement.<init>(Statement.java:190)
     at com.mysql.jdbc.PreparedStatement.<init>(PreparedStatement.java:414)
     at com.mysql.jdbc.ServerPreparedStatement.<init>(ServerPreparedStatement.java:280)
     at com.mysql.jdbc.Connection.prepareStatement(Connection.java:4288)
     at com.mysql.jdbc.Connection.prepareStatement(Connection.java:4226)
     at com.sun.rave.sql.DesignTimeConnection.prepareStatement(DesignTimeConnection.java:187)
     at com.sun.sql.rowset.CachedRowSetXImpl.getMetaData(CachedRowSetXImpl.java:2334)
     at com.sun.data.provider.impl.CachedRowSetDataProvider.getMetaData(CachedRowSetDataProvider.java:1317)
     at com.sun.data.provider.impl.CachedRowSetDataProvider.getFieldKeys(CachedRowSetDataProvider.java:489)
     at com.sun.rave.web.ui.component.table.TableRowGroupDesignState.resetTableColumns(TableRowGroupDesignState.java:261)
     at com.sun.rave.web.ui.component.table.TableRowGroupDesignState.setDataProviderBean(TableRowGroupDesignState.java:163)
     at com.sun.rave.web.ui.component.table.TableDesignState.setDataProviderBean(TableDesignState.java:250)
     at com.sun.rave.web.ui.component.TableDesignInfo.linkBeans(TableDesignInfo.java:162)
     at com.sun.rave.insync.models.FacesModel.linkBeans(FacesModel.java:1042)
     at com.sun.rave.designer.DndHandler.processLinks(DndHandler.java:2126)
     at com.sun.rave.designer.DndHandler.importBean(DndHandler.java:880)
     at com.sun.rave.designer.DndHandler.importItem(DndHandler.java:702)
     at com.sun.rave.designer.DndHandler.importDataDelayed(DndHandler.java:376)
     at com.sun.rave.designer.DndHandler.access$000(DndHandler.java:114)
[catch] at com.sun.rave.designer.DndHandler$1.run(DndHandler.java:298)
     at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
     at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
     at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
yes i use JSC 2
Is it posible that my MySQL is not working properly??
Micz.

Problem with decode!!!

Hi guys,
I have a problem with "decode"!
How can I tell the decode expression
that if a rowset don't exists --> then doing something.
I've tried that with "NULL" but that don't works.
here my code:
I wanted that if tx.text doesn't exists then
it returns fs.anlageschwerpunkt_lang, and otherwise
it returns tx.Text.
select
decode(tx.Text,NULL,fs.anlageschwerpunkt_lang,tx.Text) Anlageschwerpunkt_1 from
POI.Fondsstamm fs,
Texte tx,
Texttypstamm txy
where
tx.match='amfcomm'
and tx.match=rtrim(fs.match)
and tx.TEXTTYPID=txy.TEXTTYPID
and txy.BEREICHSID=14
and txy.texttyp='Marketingstrategie'
I hope somebody of you can help me
thanxx
Schoeib

I read Schoeibs question differently; no ROWS are being returned. In that case you cannot expect DECODE or any other function to do anything. Assuming that rows always exist in fs and txy and are only missing in tx, then you need an outer join. Note that the join of tx.match = rtrim(fs.match) has been altered to avoid outer joining to more than one table. As mentioned before, although the decode is OK, NVL could be used instead.
select
decode(tx.Text,NULL,fs.anlageschwerpunkt_lang,tx.Text) Anlageschwerpunkt_1 from
POI.Fondsstamm fs,
Texte tx,
Texttypstamm txy
where
tx.match(+)='amfcomm'
and rtrim(fs.match) = 'amfcomm'
and tx.TEXTTYPID(+)=txy.TEXTTYPID
and txy.BEREICHSID=14
and txy.texttyp='Marketingstrategie'

Drill Out Problem with drill down

Hello,
help needed.
I have two workbooks. The first consists of a hierachical Rowset. This workbook ist stored complettly collapsed.
When I open it in Portal and use the option "analyze" and after that follow a drillout link to the second workbook it works.
When I open it in Portal and use the option "analyze" open one level of the hierarchy and after that follow a drillout link to the second workbook the "save dialog" apears. If I answer yes I get an error and also if the answer is no.
I also set in the discoverer\configuration.xml the flag saveWorkBehavior="never_save" nothing (still asking).
Logging level is none
Discoverer 10.1.2.48.18 with patch 5729515
Can anybody can give me a solution, workaround or hint
Application.log
07/01/09 14:54:18 discoverer: [ERROR] [AJPRequestHandler-ApplicationServerThread-6] oracle.discoverer.applications.framework.ApplicationController._logException error.handling.event
oracle.discoverer.applications.framework.ApplicationException: error.handling.event
     at oracle.discoverer.applications.framework.GlobalExceptionHandler.execute(Unknown Source)
     at org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:553)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:486)
     at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
     at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
     at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
     at oracle.discoverer.applications.framework.ApplicationEncodingFilter.doFilter(Unknown Source)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:663)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:330)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:830)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.AJPRequestHandler.run(AJPRequestHandler.java:224)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.AJPRequestHandler.run(AJPRequestHandler.java:133)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:186)
     at java.lang.Thread.run(Thread.java:534)
Caused by: java.lang.NullPointerException
     at oracle.discoverer.applications.framework.RawRequest.populateParameters(Unknown Source)
     at oracle.discoverer.applications.framework.RawRequest.<init>(Unknown Source)
     at oracle.discoverer.applications.framework.RawRequest.initDeferredRequest(Unknown Source)
     at oracle.discoverer.applications.framework.RawRequest.<init>(Unknown Source)
     at oracle.discoverer.applications.framework.ApplicationController.execute(Unknown Source)
     at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
     ... 14 more

Hi user 552235...
I am not sure if my next post will help you, since I am not working with portal, but I had a problem with drill to link in the same disco version (10.1.2.48.18) and the problem solved after applying patch 5507746 for bug 5475467.
You can read more in metalink with the number I supplied you and try in a test environment of course...
Hope this will help you solving your problem, if it does please update the thread for the rest of our community...
Gidi Halamish

Problem with XSQLRequest.process

Problem with XSQLRequest.process:
I'm trying to run XSQL files using XSQLRequest.process. I'm working on the chapter 3 examples in Muench's book and got FAQXML.xsql running okay but have had problems with: FAQhtml.xsql BTW I am calling them from a different directory and am using 9iAS under win2K SP3.:
I've fixed errors such as:
End tag does not match start tag 'img'.
by adding </img>
and:
End tag does not match start tag 'META'.
by removing the <head> section from the xsl.
But now i've got:
XML parse error at line 2, char 1
Expected 'EOF'.
and don't have a clue.
Some questions I have are:
--Why don't I get these errors when I run the same files from Internet Explorer?
--Where is the intermediate XML file?
--How will I get HTML output?
I'd appreciate any help you could suggest.
Peter.
Here is the .xsql and some of the .xsl:
<?xml version="1.0"?>

<?xml-stylesheet type="text/xsl" href="http://localhost/ch03/FAQ-In-HTML.xsl"?>
<xsql:include-xsql href="FAQ.xsql" xmlns:xsql="urn:oracle-xsql"/>

<html xsl:version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
-->
<body>
<center>
<table border="0">
<tr>
<th>Question</th>
<th>Difficulty</th>
</tr>
<xsl:for-each select="ROWSET/ROW">
<tr>
<td>
<table border="0" cellspacing="0">
etc...

XSQL version is 1.0.2.0.
Well, in answer to your import question, yes. Xerces can import Xerces documents properly. Thus if we use Xerces importNode on a document parsed/created using Xerces' DOM implementation, the attribute values stay.
We are using Xerces because it is the foundation of our infrastructure layer (which is partly because it's used in Catalina).
Question. Is it possible that XSQLParserHelper which, as you say, uses an instance of oracle.xml.parser.v2.DOMParser to parse the document, is having trouble with different versions of DOM? I ask because we've noticed that to use Catalina and have its class loader to function successfully, we had strip all the DOM classes from xmlparserv2.jar
importNode snippit ...
public void service(CioServletRequest req, CioServletResponse resp) throws ServletException {
DomResponse respm = resp.createDomResponse();
Document dbdoc = respm.getDocument();
XSQLRequest req = new XSQLRequest( pageUrl );
ByteArrayOutputStream ostream = new ByteArrayOutputStream();
req.process(params, ostream, new PrintWriter(System.err));
String s = new String(ostream.toByteArray());
Document retDoc = respm.parseDocument(s);
dbdoc.appendChild(dbdoc.importNode(retDoc.getDocumentElement(), true));
Hope this helps.
Steve.
null

Problem with database control returning multiple rows as Array using Oracle

Has anybody using Oracle gotten a Database control that
returns multiple rows to work returning an array?
The only way I can seem to return multiple rows is by returning
a RowSet. Returning an array gives me a NullPointerException
(when called within a pageFlow). When calling a database control
that returns an array from a web service I get a
"java.sql.SQLException: ResultSet has no more data." error.
The samples using the pointbase database seem to work, but when I
converted the CustomerDBClient web service to use Oracle, it starts
failing on calling the database control that returns an array
with: "java.sql.SQLException: ResultSet has no more data."
Has anybody gotten this to work using Oracle?
I'm also having some problem returning an Iterator. It seems
to work when called from a web service, but returns nothing
if called from a page flow.
I'm using Oracle 8.1.7 and WebLogic 8.1.
Eric

Do you need a particular service pack installed to return an array of custom object?
I am getting a ResultSet contained no data error when trying.
Thanks,
-Thomas
"Robin Karlin" <[email protected]> wrote:
>
Eddie O'Neil <[email protected]> wrote:
All--
Unfortunately, returning an Iterator to a JPF (or JSP) from a
database control is broken in WLW 8.1, though it will work inside of
a
JWS or JCS.
There shouldn't be a problem with returning an array of objects out
of Oracle to the JPF, and if you need an Iterator specifically, youcan
wrap the array in an Iterator implementation.
Sorry for the inconvenience.
Eddie
Lenny wrote:
I have gotten it to work on Oracle using Array:)
However, I haven't gotten it to work on Oracle using Iterator:( Itis so
simple, but doesn't work:(
"Eric Dokken" <[email protected]> wrote in message
news:[email protected]...
Has anybody using Oracle gotten a Database control that
returns multiple rows to work returning an array?
The only way I can seem to return multiple rows is by returning
a RowSet. Returning an array gives me a NullPointerException
(when called within a pageFlow). When calling a database control
that returns an array from a web service I get a
"java.sql.SQLException: ResultSet has no more data." error.
The samples using the pointbase database seem to work, but when I
converted the CustomerDBClient web service to use Oracle, it starts
failing on calling the database control that returns an array
with: "java.sql.SQLException: ResultSet has no more data."
Has anybody gotten this to work using Oracle?
I'm also having some problem returning an Iterator. It seems
to work when called from a web service, but returns nothing
if called from a page flow.
I'm using Oracle 8.1.7 and WebLogic 8.1.
Eric
I get the same error that Eric reported when trying to return an Array
of objects.
It is really frustrating because I can't use much of the built-in control
logic
that WLW provides. All I did was create a data pool for Oracle and a
datasource.
I modified the sample app in C:\bea81\weblogic81\samples\workshop\SamplesApp\WebApp\callJavaControl
to point to that datasource and I get the error that Eric reports above.
Can
anyone help me out????
Thanks,
Robin

Problem with FilteredRowSetImpl

1404.1
I am facing problem with the FilteredRowSetImpl, while using the method readXML(Reader)
any body can help me please
i am adding the error below
java.sql.SQLException: readXML : null
at com.sun.rowset.WebRowSetImpl.readXml(Unknown Source)
at com.srit.hrnet.components.BasicDAO.delete(BasicDAO.java:339)
at com.srit.hrnet.components.BasicDAO.getSubList(BasicDAO.java:274)
at com.srit.hrnet.components.BasicDAO.getList(BasicDAO.java:199)
at org.apache.jsp.commongrid.commonGrid_jsp._jspService(commonGrid_jsp.java:282)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:298)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:703)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:589)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:499)
at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
at org.apache.jsp.training.categoryskills.ViewAllCategory_jsp._jspService(ViewAllCategory_jsp.java:239)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:298)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:793)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:702)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:571)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:644)
at java.lang.Thread.run(Thread.java:534)
com.srit.hrnet.components.BasicDAO.delete() :Exception while reading xml file :java.sql.SQLException: readXML : null
Regds
Niju

Hi, Beverley.
Thank you for visiting Apple Support Communities.
I understand that you are unable to trim clips using iMovie. I would need a little more information on how you were attempting to trim a clip to provide a better answer. However, make sure you have the movie project open and are selecting the clip that you wish to trim as this will activate the clip trimmer.
Trim clips
-Jason H.

A problem with threads

I am trying to implement some kind of a server listening for requests. The listener part of the app, is a daemon thread that listens for connections and instantiates a handling daemon thread once it gets some. However, my problem is that i must be able to kill the listening thread at the user's will (say via a sto button). I have done this via the Sun's proposed way, by testing a boolean flag in the loop, which is set to false when i wish to kill the thread. The problem with this thing is the following...
Once the thread starts excecuting, it will test the flag, find it true and enter the loop. At some point it will LOCK on the server socket waiting for connection. Unless some client actually connects, it will keep on listening indefinatelly whithought ever bothering to check for the flag again (no matter how many times you set the damn thing to false).
My question is this: Is there any real, non-theoretical, applied way to stop thread in java safely?
Thank you in advance,
Lefty

This was one solution from the socket programming forum, have you tried this??
public Thread MyThread extends Thread{
     boolean active = true;
     public void run(){
          ss.setSoTimeout(90);
          while (active){
               try{
                    serverSocket = ss.accept();
               catch (SocketTimeoutException ste){
               // do nothing
     // interrupt thread
     public void deactivate(){
          active = false;
          // you gotta sleep for a time longer than the
          // accept() timeout to make sure that timeout is finished.
          try{
               sleep(91);
          }catch (InterruptedException ie){
          interrupt();
}

Problem with Threads and a static variable

I have a problem with the code below. I am yet to make sure that I understand the problem. Correct me if I am wrong please.
Code functionality:
A timer calls SetState every second. It sets the state and sets boolean variable "changed" to true. Then notifies a main process thread to check if the state changed to send a message.
The problem as far I understand is:
Assume the timer Thread calls SetState twice before the main process Thread runs. As a result, "changed" is set to true twice. However, since the main process is blocked twice during the two calls to SetState, when it runs it would have the two SetState timer threads blocked on its synchronized body. It will pass the first one, send the message and set "changed" to false since it was true. Now, it will pass the second thread, but here is the problem, "changed" is already set to false. As a result, it won't send the message even though it is supposed to.
Would you please let me know if my understanding is correct? If so, what would you propose to resolve the problem? Should I call wait some other or should I notify in a different way?
Thanks,
B.D.
Code:
private static volatile boolean bChanged = false;
private static Thread objMainProcess;
   protected static void Init(){
        objMainProcess = new Thread() {
            public void run() {
                while( objMainProcess == Thread.currentThread() ) {
                   GetState();
        objMainProcess.setDaemon( true );
        objMainProcess.start();
    public static void initStatusTimer(){
        if(objTimer == null)
             objTimer = new javax.swing.Timer( 1000, new java.awt.event.ActionListener(){
                public void actionPerformed( java.awt.event.ActionEvent evt){
                          SetState();
    private static void SetState(){
        if( objMainProcess == null ) return;
        synchronized( objMainProcess ) {
            bChanged = true;
            try{
                objMainProcess.notify();
            }catch( IllegalMonitorStateException e ) {}
    private static boolean GetState() {
        if( objMainProcess == null ) return false;
        synchronized( objMainProcess ) {
            if( bChanged) {
                SendMessage();
                bChanged = false;
                return true;
            try {
                objMainProcess.wait();
            }catch( InterruptedException e ) {}
            return false;
    }

Thanks DrClap for your reply. Everything you said is right. It is not easy to make them alternate since SetState() could be called from different places where the state could be anything else but a status message. Like a GREETING message for example. It is a handshaking message but not a status message.
Again as you said, There is a reason I can't call sendMessage() inside setState().
The only way I was able to do it is by having a counter of the number of notifies that have been called. Every time notify() is called a counter is incremented. Now instead of just checking if "changed" flag is true, I also check if notify counter is greater than zero. If both true, I send the message. If "changed" flag is false, I check again if the notify counter is greater than zero, I send the message. This way it works, but it is kind of a patch than a good design fix. I am yet to find a good solution.
Thanks,
B.D.

Problem with Rowsets

Similar Messages

Maybe you are looking for