How to use resultset preparedstatement

Thanks for the quick response
How can i use resultset for the query below
select * from custom_table
where
(entity_name= 'PO_HEAD' and pk1_value = :P5_PO_HEADER_ID and pk2_value = '0' )
OR (entity_name= 'PO_HEADERS' and pk1_value = :P5_PO_HEADER_ID )
OR (entity_name= 'PO_VENDORS' and pk1_value = :P5_VENDOR_ID )

You should be able to read the file in and convert its data to a byte-array in your object. TopLink will handle the conversion from byte-array to BLOB in the database.
If you are using the Oracle thin JDBC drivers, they have a 5k size limit, if your file is larger than this you will need to use the Oracle8/9Platform in your login and a TypeConversionMapping and set the fieldClassification to java.sql.Blob.

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How to get resultset from oracle procedure use ejb3

how to get resultset from oracle procedure use ejb3
i know oracle procedure should like this
Create or replace PROCEDURE resultset_test(
aaa IN NUMBER,
bbb OUT sys_refcursor) ....
but what s the ejb3 scripts looks like? please give me an example or link~
ths

- there are no EJB3 scripts, only compiled application code
- the part of the EJB spec that deals with databases is called the Java Persistence API, but likely you are just looking for the JDBC API.
Now you should know what to Google to get your "example script": "java jdbc oracle procedure"

How to use the wl61sp2 of scrollable resultsets

wl61sp2 had already included mssqlserver4 , but it could not support for scrollable
resultsets. How about using scrollable resultsets in the wl61sp2 or install the
mssqlserver4v70rel510sp11 into the wl61sp2? If you can answer these questions,please
help me!!!thanks
Error:
java.sql.SQLException: java.sql.SQLException: This JDBC 2.0 method is not implemented
at weblogic.jdbc.rmi.SerialConnection.prepareStatement(SerialConnection.java:406)at jsp_servlet._adminwww.__t._jspService(__t.java:108)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
at eblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:265)
at eblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:200)
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wangchuyun wrote:
>
wl61sp2 had already included mssqlserver4 , but it could not support for scrollable
resultsets. How about using scrollable resultsets in the wl61sp2 or install the
mssqlserver4v70rel510sp11 into the wl61sp2? If you can answer these questions,please
help me!!!thanksOur driver is only at the JDBC 1.0 level in functionality. For jdbc 2.0 compliance, I
recommend using either MS's new free type-4 driver or the good driver from
www.inetsoftware.de.
Joe
>
Error:
java.sql.SQLException: java.sql.SQLException: This JDBC 2.0 method is not implemented
at weblogic.jdbc.rmi.SerialConnection.prepareStatement(SerialConnection.java:406)at jsp_servlet._adminwww.__t._jspService(__t.java:108)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:27)
at eblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:265)
at eblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:200)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:2495)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2204)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)

How to re-use a PreparedStatement from poolled connections?

Consider poolled connections....
one advantage of poolled connections are resource sharing...preventing the system from creating lots of connections or from creating and destroying similar connections.
Connection and thread pools are specially usefull on multi-threaded servers.
Consider now an application that has a service that logs the number of times a user has connected.
This service is thread-safe, it is synchronized (bad) or it doesn�t have state (good).
Every time a thead is started in this service a connection is requested from the pool que the service finish logging it needs to release the connection back to the pool.
This is done automatically by the Connection wrapper. When we do conn.close(); actually the wrapper is releasing the connection so that other threads and services can use it.
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Thanks

I can only speak about DB2 on the ISeries (AS/400) but to get the benifits of prepared statments it is not required to leave the preperedstatment object open. The first time a prepared statment is prepared against a connection: it takes a significant amount of time, subsiquent prepares for exactly the same SQL take practically no time.
It may be different on with your database and driver but you should have a test!
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Hope this helps!

How to use LIKE operator with PreparedStatement

Hi, I need to execute a query with the LIKE operator, but using a PreparedStatement. Can I do this, and if so what must my SQL look like with the wildcard characters '%' or '_'?
normal PS example: conn.prepareStatement("select * from mytable where name like ?");
If I try: conn.prepareStatement("select * from mytable where name like ?%");
I get: ORA-00911: invalid character
If I try: conn.prepareStatement("select * from mytable where name like '?%'");
I get: ORA-01006: bind variable does not exist
I must use a PreparedStatement, as my variable may contain illegal characters (like '), and using PreparedStatement.setString(1, var) will automatically escape it for me.
I could also use a normal Statement, but I need to escape my var ... is there a utility that will safely escape a String for an Oracle VARCHAR2??
Thanks in advance,
Stu Miller

Hmm, it seems you are right...
when my variable contains a '%' symbol, the PreparedStatement will NOT escape it, and thus it is treated like a wildcard. Therefore, I can just do
pstmt.setString(1, var+"%");
But, that may return more results than I'm asking for, as when 'var' contains a '%' symbol it is taken as a wildcard too.
I need each character in my variable to be taken literally, and only add a wildcard at the end. Basically, I need a STARTSWITH operator ;-)
It seems to me that escaping the sensitive characters in a String (which will differ depending on which operator is used), should be possible. I could write this, but I was hoping Oracle had already done it for me in some utility class.

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How to use "scope " attrubute in useBean tag

Can anyone please tell me if I can use the same JavaBean Class to hold information form different pages? well, let me explain exactely what I want to do:
I have a Java bean Class that holds a property 'Name':
package ContactManager;
public class Person {
private String name="%";
public String getName () {
return this.name;
public void setName (String my_name) {
name = my_name + "%" ;
I'm using this class to store temporarly the Criteria of search from a JSP/HTML page to send to a database for search and for UPDATE -> this of course is done in different HTML/JSP pages. The problem I have is that the first time I set the properties (when the user make a search) this value remains unchanged [-> the second time when the user asks for update, I try to use the same bean to keep the value => unfortuntly it returns me the old value]
My question is: is the use of 'scope' attribute of the "jsp:useBean" tag can solve this problem? if yes how to use it? I've tryed to set the scope of the bean to page but that does not help :-(
Pleaze help, I'm stuck.... Bellow is the 4 JSP pages for:
- person_search.jsp / person_result.jsp
- request_modify.jsp/ DoModify.jsp
1 -person_search.jsp
<%@ page import="java.sql.*" %>
<HTML>
<HEAD><TITLE>Person Search</TITLE></HEAD>
<BODY><CENTER>
<form method="POST" action="person_result.jsp">
Name <input type="text" name="name" size="47"></p>
<input type="submit" value="Submit" name="B1">
<input type="reset" value="Reset" name="B2"></p>
</form></body>
</html>
2- person_result.jsp
<%@ page import="java.sql.*" %>
<HTML><BODY>
<jsp:useBean id="theBean" class="ContactManager.Person"/>
<jsp:setProperty name="theBean" property="*" />
Name<BR>
<%
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
System.out.println("JDBC driver loaded");
catch (ClassNotFoundException e) {
System.out.println(e.toString());
%>
<%
try {
Connection con = DriverManager.getConnection("jdbc:odbc:ContactManager");
Statement s = con.createStatement();
String sql = "SELECT Client.ClientID, Client.Name FROM Client where Client.Name like " + "'" + theBean.getName() + "'";
ResultSet rs = s.executeQuery(sql);
while (rs.next()) {
String myId = rs.getString(1);
%>
<TR>
<TD><%= myId %></TD>
<TD><a href="person_detail.jsp?id=<%= myId %>"><%=rs.getString(2)%></a></TD>
<TD><a href="delete_person.jsp?id=<%= myId %>">Delete</a></TD><BR>
</TR>
<%
rs.close();
s.close();
con.close();
catch (SQLException e) {
System.out.println(e.toString());
catch (Exception e) {
System.out.println(e.toString());
%>
</BODY>
</HTML>
3- request_modify.jsp
<%@ page import="java.sql.*" %>
<html>
<head><title>AddressBook: Modifying Person <%= request.getParameter ("id") %></title> </head>
<body bgcolor="#ffffee">
<%
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
System.out.println("JDBC driver loaded");
catch (ClassNotFoundException e) {
System.out.println(e.toString());
%>
<%
int rowsAffected = 0;
try {
Connection con = DriverManager.getConnection("jdbc:odbc:ContactManager");
Statement s = con.createStatement();
String sql = "SELECT Client.ClientID, Client.Name FROM Client where ClientID ="+ request.getParameter("id");
ResultSet rs = s.executeQuery(sql);
if (rs.next()) {
%>
Client Name is <input type=text name=name value=<%= rs.getString(2) %>> <br>
<TD><a href="person_do_modify.jsp?id=<%= rs.getString(1)%>">Confirm Modify</a></TD>
<%
rs.close();
s.close();
con.close();
catch (SQLException e) {
System.out.println(e.toString());
catch (Exception e) {
System.out.println(e.toString());
%>
</BODY> </HTML>
4- do_modify.jsp
<%@ page import="java.sql.*" %>
<html>
<head><title>AddressBook: Modifying Address <%= request.getParameter ("id") %></title></head>
<body bgcolor="#ffffee">
<jsp:useBean id="theBean" class="ContactManager.Person" scope="page"/>
<jsp:setProperty name="theBean" property="name"/>
<%
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
System.out.println("JDBC driver loaded");
catch (ClassNotFoundException e) {
System.out.println(e.toString());
%>
<%
int rowsAffected = 0;
try {
Connection con = DriverManager.getConnection("jdbc:odbc:ContactManager");
PreparedStatement preparedStatement = con.prepareStatement ("UPDATE Client SET Name=? WHERE ClientID =?");
preparedStatement.setString (1, theBean.getName());
preparedStatement.setString (2, request.getParameter("id"));
rowsAffected = preparedStatement.executeUpdate ();
preparedStatement.close ();
if (rowsAffected == 1) {
%>
done
<%
else{
%>
Not Modified
<%
con.close();
catch (SQLException e) {
System.out.println(e.toString());
catch (Exception e) {
%>
</BODY></HTML>
Thank you for the help.
Sammy

While a quick search on the <jsp:useBean> tag and the scope attribute will probably yield more information than I can summarize in a few sentences, I'm pretty sure that using the scope="page" attribute on a bean will cause that bean to be instantiated every time the page is loaded. In order for a bean to persist longer than the existance of that page (whether you're loading a new page, or reloading the same one), you'd need to set the scope to session or application (you'd probably want session).

How to use Add Query Criteria for the MySQL data Base in Netbeans ?

How to use Add Query Criteria for the MySQL data Base in Netbeans Visual web pack.
When the Query Criteria is add like
SELECT ALL counselors.counselors_id, counselors.first_name, counselors.telephone,counselors.email
FROM counselors WHERE counselors.counselors_id = ?
when i run this Query in the Query Window
i get a error message Box saying
Query Processing Error Parameter metadata not available for the given statement
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*I am glad I am not the only one who have this problem. Part of issue has been described as above, there are something more in my case.
Whenever I try to call ****_tabRowSet.setObject(1, userDropList.getSeleted()); I got error message as shown below:*
The Java codes are:
public void dropDown1_processValueChange(ValueChangeEvent event) {
Object s = this.dropDown1.getSelected();
try {
this.User_tabDataProvider1.setCursorRow(this.User_tabDataProvider1.findFirst("User_Tab.User_ID", s));
this.getSessionBean1().getTrip_tabRowSet1().setObject(1, s);
this.Trip_tabDataProvider1.refresh();
} catch (Exception e) {
this.log("Error: ", e);
this.error("Error: Cannot select user"+e.getMessage());
SQL statement for Trip_tabRowSet:
SELECT ALL Trip_Tab.Trip_Date,
Trip_Tab.User_ID,
Trip_Tab.Destination
FROM Trip_Tab
WHERE Trip_Tab.User_ID = ?
Error messages are shown below:
phase(RENDER_RESPONSE 6,com.sun.faces.context.FacesContextImpl@5abf3f) threw exception: com.sun.rave.web.ui.appbase.ApplicationException: java.sql.SQLException: No value specified for parameter 1 java.sql.SQLException: No value specified for parameter 1
com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.cleanup(ViewHandlerImpl.java:559)
com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.afterPhase(ViewHandlerImpl.java:435)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:274)
com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:140)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:397)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:184)
com.sun.webui.jsf.util.UploadFilter.doFilter(UploadFilter.java:240)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:216)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:184)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:216)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:184)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:276)
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:536)
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:240)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:179)
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:73)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:182)
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
com.sun.enterprise.web.VirtualServerPipeline.invoke(VirtualServerPipeline.java:120)
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:939)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:137)
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:536)
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:939)
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:239)
com.sun.enterprise.web.connector.grizzly.ProcessorTask.invokeAdapter(ProcessorTask.java:667)
com.sun.enterprise.web.connector.grizzly.ProcessorTask.processNonBlocked(ProcessorTask.java:574)
com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:844)
com.sun.enterprise.web.connector.grizzly.ReadTask.executeProcessorTask(ReadTask.java:287)
com.sun.enterprise.web.connector.grizzly.ReadTask.doTask(ReadTask.java:212)
com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:252)
com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:75)
tandardWrapperValve[Faces Servlet]: Servlet.service() for servlet Faces Servlet threw exception
java.sql.SQLException: No value specified for parameter 1
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:910)
at com.mysql.jdbc.PreparedStatement.fillSendPacket(PreparedStatement.java:1674)
at com.mysql.jdbc.PreparedStatement.fillSendPacket(PreparedStatement.java:1622)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1332)
at com.sun.sql.rowset.internal.CachedRowSetXReader.readData(CachedRowSetXReader.java:193)
at com.sun.sql.rowset.CachedRowSetXImpl.execute(CachedRowSetXImpl.java:979)
at com.sun.sql.rowset.CachedRowSetXImpl.execute(CachedRowSetXImpl.java:1439)
at com.sun.data.provider.impl.CachedRowSetDataProvider.checkExecute(CachedRowSetDataProvider.java:1274)
at com.sun.data.provider.impl.CachedRowSetDataProvider.setCursorRow(CachedRowSetDataProvider.java:335)
at com.sun.data.provider.impl.CachedRowSetDataProvider.setCursorIndex(CachedRowSetDataProvider.java:306)
at com.sun.data.provider.impl.CachedRowSetDataProvider.getRowCount(CachedRowSetDataProvider.java:639)
at com.sun.webui.jsf.component.TableRowGroup.getRowKeys(TableRowGroup.java:1236)
at com.sun.webui.jsf.component.TableRowGroup.getFilteredRowKeys(TableRowGroup.java:820)
at com.sun.webui.jsf.component.TableRowGroup.getRowCount(TableRowGroup.java:1179)
at com.sun.webui.jsf.component.Table.getRowCount(Table.java:831)
at com.sun.webui.jsf.renderkit.html.TableRenderer.renderTitle(TableRenderer.java:420)
at com.sun.webui.jsf.renderkit.html.TableRenderer.encodeBegin(TableRenderer.java:143)
at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:810)
at com.sun.webui.jsf.component.Table.encodeBegin(Table.java:1280)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:881)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:889)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:889)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:889)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:889)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:889)
at com.sun.faces.application.ViewHandlerImpl.doRenderView(ViewHandlerImpl.java:271)
at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:182)
at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.renderView(ViewHandlerImpl.java:285)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:133)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:244)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:140)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:397)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:184)
at com.sun.webui.jsf.util.UploadFilter.doFilter(UploadFilter.java:240)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:216)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:184)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:368)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:216)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:184)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:276)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:536)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:179)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:73)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:182)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
at com.sun.enterprise.web.VirtualServerPipeline.invoke(VirtualServerPipeline.java:120)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:939)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:137)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:536)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:939)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:239)
at com.sun.enterprise.web.connector.grizzly.ProcessorTask.invokeAdapter(ProcessorTask.java:667)
at com.sun.enterprise.web.connector.grizzly.ProcessorTask.processNonBlocked(ProcessorTask.java:574)
at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:844)
at com.sun.enterprise.web.connector.grizzly.ReadTask.executeProcessorTask(ReadTask.java:287)
at com.sun.enterprise.web.connector.grizzly.ReadTask.doTask(ReadTask.java:212)
at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:252)
at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:75)
Also when I tried to update my MYSQL connector / J driver to version 5.1.5 from 5.0.5 (NB 5.5.1) and 5.0.7 (NB 6.1), I could not get it work (looooong time to search some JDBC classes and with no response in the end) on both of my Netbean 5.5.1(on PC) and Netbean 6.1(on laptop) IDEs.
Could anybody look into this issue.
Many thanks
Edited by: linqing on Nov 22, 2007 4:48 AM

How to use count sql statement?

i've never used the count function and i'm not sure how to use it to print it onto a html page...my code is below...
<%
String tot = (String)session.getAttribute("total");
int total = Integer.parseInt(tot);
Class.forName("org.postgresql.Driver");
// create connection url
String URL2 = "jdbc:postgresql://dbhost/ug59sxn";
// pass database parameters to JDBC driver
Connection Conn2 = DriverManager.getConnection(URL2, "ug59sxn", "hupeswop");
// query statement
Statement SQLStatement2 = Conn2.createStatement();
// generate query
String Query2 = "SELECT COUNT(*) FROM userteam WHERE total > '"+total+"'";
// get result code
ResultSet SQLResult2 = SQLStatement2.executeQuery(Query2);
int position = (int)SQLResult2 + 1;
%>
<TD valign=top>
<P align=center><FONT size=+1>Welcome <%= session.getAttribute("fName") %> <%= session.getAttribute("surname") %><BR>
Your Team, <%= session.getAttribute("teamname") %>, are currently lying in position <FONT color=red><% out.println(position) %></font>, with <FONT color=red><%= session.getAttribute("total") %></font> points.<BR>
</FONT></P>
<P align=justify> Use the shorcuts on the left to visit different sections of the game.
You can change your squad around to prepare for forthcoming games (fixtures can be found in the statistics section),
transfer a player in to your squad to add some depth or replace injured members, or perhaps browse the statistics section to see how your team is doing in the FFL table.</P>
<HR>
<%
SQLResult2.close();
SQLStatement2.close();
Conn2.close();
%>
i get the following errors:
type Exception report
message Internal Server Error
description The server encountered an internal error (Internal Server Error) that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Unable to compile class for JSPNote: sun.tools.javac.Main has been deprecated.
An error occured between lines: 62 and 84 in the jsp file: /main2.jsp
Generated servlet error:
/home/students/ug/ug59sxn/servlets-local/work/localhost/myapp/main2$jsp.java:80: Invalid cast from java.sql.ResultSet to int.
int position = (int)SQLResult2 + 1;
^
An error occurred at line: 88 in the jsp file: /main2.jsp
Generated servlet error:
/home/students/ug/ug59sxn/servlets-local/work/localhost/myapp/main2$jsp.java:108: Invalid type expression.
out.println(position)
^
An error occurred at line: 88 in the jsp file: /main2.jsp
Generated servlet error:
/home/students/ug/ug59sxn/servlets-local/work/localhost/myapp/main2$jsp.java:111: Invalid declaration.
out.write("</font>, with <FONT color=red>");
^
3 errors, 1 warning
if anyone can help me out, please do so..thanx in advance...

You cannot cast a ResultSet object (or any other object for that matter) to a primitive (such as an int)
Replace the following line of code:
int position = (int)SQLResult2 + 1;with this:
int position = 0;
if(SQLResult2.next())
position = SQLResult2.getInt(1) + 1;
}Additionally I noticed that you have put single quotes around total in the following line:
String Query2 = "SELECT COUNT(*) FROM userteam WHERE total > '"+total+"'";Are you sure that the total column in the userteam table is of string type? If not, you don't need the single quotes.

How to use the function who returns an array?

how to use getAllT in pls/sql or in java?
--------------------------------------------------->
create or replace package honghai as
     type TType is varray(25) of number;
/*it can be like : type TType is table of number;
     function getCountT return number;
     function getAllT return TType;
end honghai;
create or replace package body honghai as
a number;
function getCountT return number is
     acount number;
     begin
          select count(*) into acount from testasb.t;
          return acount;
     end getCountT;
     function getAllT
     return TType is
     results TType;
     begin
          select testid into results(25) from testasb.T ;
          return results ;
     end getAllT;
begin
     a := 2;
end honghai;


For the java part, click on the link below:
http://osi.oracle.com/~tkyte/ResultSets/index.html
For the pl/sql part specific to your problem, see the code below. Since you did not provide any table structure or sample data, I used some simple data for demonstration purposes:
SQL> CREATE TABLE t
2    (testid NUMBER)
3 /
Table created.
SQL> INSERT INTO t
2 VALUES (1)
3 /
1 row created.
SQL> INSERT INTO t
2 VALUES (2)
3 /
1 row created.
SQL> CREATE OR REPLACE PACKAGE honghai
2 AS
3    TYPE ttype IS REF CURSOR;
4    FUNCTION getcountt RETURN NUMBER;
5    FUNCTION getallt RETURN ttype;
6 END honghai;
7 /
Package created.
SQL> CREATE OR REPLACE PACKAGE BODY honghai
2 AS
3    a NUMBER;
4    FUNCTION getcountt RETURN NUMBER
5    IS
6      account nUMBER;
7    BEGIN
8      SELECT COUNT (*)
9      INTO   account
10      FROM   scott.t;
11      RETURN account;
12    END getcountt;
13    FUNCTION getallt RETURN ttype
14    IS
15      results ttype;
16    BEGIN
17      OPEN results for 'SELECT testid FROM scott.t';
18      RETURN results;
19    END getallt;
20 BEGIN
21    a := 2;
22 END honghai;
23 /
Package body created.
SQL> VARIABLE g_num NUMBER
SQL> VARIABLE g_ref REFCURSOR
SQL> EXEC :g_num := honghai.getcountt
PL/SQL procedure successfully completed.
SQL> EXEC :g_ref := honghai.getallt
PL/SQL procedure successfully completed.
SQL> PRINT g_num
     G_NUM
         2
SQL> PRINT g_ref
    TESTID
         1
         2

Its urgent how to use calss file of jar located in lib folder

how to use calss file of jar located in lib folder.
i want to use RowSetDynaClass class which is in beanutil jar file which is in my lib folder .if i use that class in my jsp following error is coming.
Class RowSetDynaClass not found.
RowSetDynaClass resultSet = new RowSetDynaClass(rs, false);
how to access class in jar file.
please help

You have to either refer to the class in its fully quallified name, or import it into the JSP:
<%
some.full.packagename.RowSetDynaClass resultSet = new some.full.packagename.RowSetDynaClass(rs,false);
...-or-
<%@ page import="some.full.packagename.RowSetDynaClass" %>
<%
RowSetDynaClass resultSet = new RowSetDynaClass(rs, false);
...As long as the class has public visibility and you have re-started the server/servlet context since you added the JAR.

How to use setCLOB with JDBC.

Hi,
from oracle jdbc document, i know how to use getClob method. but i wonder how to insert a new record included a clob field (setClob). but clob is an interface.
it seem that it can not be successful to use setclob directly.
my friend has a way : insert an empty clob into database, then seek this record, and update it with full info again.
please help me!
thank in advance.
wu jianhua.

A few ways:
1. Use the LOBs got from a ResultSet, for example,
Clob x = rs.getClob(1); //you get an oracle.sql.CLOB object
pstmt.setClob(1, x);
2. use oracle.sql.CLOB
public static CLOB empty_lob() throws SQLException;
creates an empty lob.
public static BLOB createTemporary(Connection conn, boolean isCached, int
duration);
creates temp lob.
Those methods create object of type oracle.sql.CLOB.
refer to Oracle jdbc doc for this.

How to use PooledConnection

Hi all
This problem can look funny to lot of you.
I have project where i use Java on server side to perform some operation with MySQL. I have created connection to MySQL but there will be lot of users and connecting to database like i have done is not a option.
public Connection Connecting() { try { String username = "username"; String password = "pass"; String url = "jdbc:mysql://localhost:3306/database"; Class.forName("com.mysql.jdbc.Driver").newInstance(); conn = DriverManager.getConnection(url, username, password); System.out.println("Connection established on connecting to database"); } catch (Exception e) { System.out.println("Database Connection Problem while creating connection:" + e); } return conn; }
Then i was informed that i can use Pooled Connection. From NetBeans tutorial i have learn how to create it.
[http://www.netbeans.org/kb/60/web/mysql-webapp.html|http://www.netbeans.org/kb/60/web/mysql-webapp.html]
There i nice explanation how to create server resource and how to use it directly on web page.
<sql:query var="subjects" dataSource="jdbc/IFPWAFCAD"> SELECT subject_id, name FROM Subject </sql:query>
But i need to use it in my Java class. How to use PooledConnection created on server (GlassFish)
I was checking lot of web pages and all was talking about how to create PooledConnection but nothing with example how to use PooledConnection created on server already.
If any one can give some code example.
I have also checked this but i don't get it how to get data?
[http://java.sun.com/j2se/1.4.2/docs/api/javax/sql/PooledConnection.html|http://java.sun.com/j2se/1.4.2/docs/api/javax/sql/PooledConnection.html]

You use the DataSource to get connections (by calling getConnection()). "jdbc/IFPWAFCAD" is the JNDI name for your resource and you use that to get the actual DataSource object that the container should've loaded for you. So you get the DataSource by it's JNDI name and then get connections from the DataSource. Once you have a Connection, you can do all the stuff you'd normally do with JDBC, using PreparedStatements etc.
It's is advisable to use a DAO in order to separate your business logic from your data access logic. Check out this tutorial: [http://balusc.blogspot.com/2008/07/dao-tutorial-data-layer.html]

How to use pool connection run oracle procedure?

Hi, All:
          I am facing a difficulty I can not find the solution. Maybe you can help
          me.
          I want to call an oracle stored procedure whenever I talk to datebase to
          make the application more efficient. I was able to run the procedure using
          oracle thin driver but not the connection pool using Weblogic jDriver for
          JDBC2.0.
          Please check the following code and see what I did wrong:
          The code in JSP file in Weblogic:
          <%-- JSP page directive --%>
          <%@ page
          import="java.io.*,java.util.*,java.sql.*,weblogic.common.*,weblogic.jdbc20.c
          ommon.*" %>
          <%-- JSP Declaration --%>
          <%!
          protected Connection con = null;
          ResultSet rset = null;
          %>
          <%-- JSP Scriptlet --%>
          <% try {
          Properties props = new Properties();
          props.setProperty("user", "james");
          props.setProperty("password", "aimjames");
          Driver myDriver =
          (Driver) Class.forName
          ("weblogic.jdbc.pool.Driver").newInstance();
          con = myDriver.connect("jdbc:weblogic:pool:hdj2Pool", props);
          String userid = (String)session.getAttribute("user.id");
          int subid =
          Integer.parseInt((String)session.getAttribute("sub.id"));
          String query = "begin pkg_select.sel_req_in_001(" + userid +
          ", " + subid + ", ?); end;";
          weblogic.jdbc.common.OracleCallableStatement cstmt =
          (weblogic.jdbc.common.OracleCallableStatement)con.prepareCall(query);
          cstmt.registerOutParameter(1,java.sql.Types.OTHER);
          cstmt.execute();
          rset = cstmt.getResultSet(1);
          When I run this JSP file, the compilation is fine but the result shows
          nothing. That's means I can not get the ResultSet for some reason.
          The working file when I use oracle thin driver (NOT use a connection pool):
          String userid = (String)session.getAttribute("user.id");
          int subid = Integer.parseInt((String)session.getAttribute("sub.id"));
          String query = "begin pkg_select.sel_req_in_001(" + userid +", " +subid
          +", ?); end ";
          CallableStatement cstmt = con.prepareCall(query);
          cstmt.registerOutParameter(1,OracleTypes.CURSOR);
          cstmt.execute();
          ResultSet rset = (ResultSet)cstmt.getObject(1);
          You may notice that I am trying to bind a parameter to an Oracle cursor. Is
          there anything I did wrong in using weblogic API? I just want to let you
          that in the weblogic JSP file, I also tried to use
          weblogic.jdbc.oci.CallableStatement and
          weblogic.jdbc20.oci.CallableStatement instead of
          weblogic.jdbc.common.OracleCallableStatement, but none of them seems work.
          I did check the bea site at
          http://www.weblogic.com/docs51/classdocs/API_joci.html#1080420 for the
          example to use:
          cstmt.registerOutParameter(1,java.sql.Types.OTHER);
          and I think I followed the exact procedure the example did.
          Please help!
          James Lee
          Artificial Intelligence in Medicine, Inc.
          2 Berkeley Street, Suite 403
          Toronto, Ontario M5A 2W3
          Tel: 416-594-9393 ext. 223
          Fax: 416-594-2420
          Email: [email protected]


Joseph
Thanks for the suggestion about latest version of Weblogic Server.
"coding best-practices" is not mentioned in the post.
In order to make servlet application run significantly faster, my servet how to use connection poo is much moreresonable?
It is reasonable to expect servlet to run significantly faster with connection pooling.
Is it true that geting and close a connection whenever
one time database access finished?
Already answered. Applications use a connection from the pool then return it when finished using the connection.
Will the solution affect the servlet performance?
Yes. Already answered. Connection pooling enhances performance by eliminating the costly task of creating database connections for the application.
Is there any official document to introduce connection pool program?
For the latest version
http://download.oracle.com/docs/cd/E17904_01/web.1111/e13726/toc.htm
http://download.oracle.com/docs/cd/E17904_01/web.1111/e13737/jdbc_datasources.htm#insertedID0

How to use TableModel ???????

I'm new to java, please help me
i have this problem. When i choose the item in the combo box for the first time, i get the selected table, but when i choose the other item in combo box, the previous table is still remain in the panel instead of the new one.
String sList[] =
"InformationTechnology",
"Account",
"Investment"
combo = new JComboBox();
combo.setBounds( 220, 35, 260, 25 );
panel3.add( combo );
combo.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae){
System.out.println("Selected Item = "+(String)combo.getSelectedItem());
TableDisplay((String)combo.getSelectedItem());=
try {
// get column heads
ResultSetMetaData rsmd = rs.getMetaData();
for ( int i = 1; i <= rsmd.getColumnCount(); ++i )
columnHeads.addElement( rsmd.getColumnName( i ) );
// get row data
do {
rows.addElement( getNextRow( rs, rsmd ) );
} while ( rs.next() );
// display table with ResultSet contents
table = new JTable( rows, columnHeads );
scroller = new JScrollPane(table);
scroller.setBounds( 220, 70, 260, 100 );
panel3.add(scroller);
table.validate();
catch ( SQLException sqlex ) {
sqlex.printStackTrace();
just now got a 'guru' told me to use TableModel, but i search the web already but still stuck in the middle, because i don't know how to use TableModel..............

liml,
You code shows table instantiation as:
// display table with ResultSet contents
table = new JTable( rows, columnHeads );
Check that it's in scope, say at class-level, for subsequent manipulations.
--A

How to use resultset preparedstatement

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