EJB / EE :: Relationship Between JAAS And JDBC

Aug 9, 2014

I'm trying to understand the relationship between JAAS and JDBC..In WebSphere, when setting up a Dynamic cluster I have to first define the JAAS..Then, the datasource..The JAAS has one account/password and the datasource another..I'm not getting the relationship between needing both JAAS and JDBC docs.oracle.com/cd/E19225-01/820-5594/ahteo/index.html

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How To Grant JAAS Permission To Execute Native Code Using JNI

Mar 13, 2015

I am running my Java code with SecurityManager enabled. The code must load a DLL and invoke methods written in C using JNI. Is there a documentation available describing the permissions needed for native code?

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JDBC :: How To Call Parameterized Stored Procedure In Jdbc

May 17, 2014

calling a parameterized stored procedure in java jdbc from sql server.The stored procedure goes like this in sql

create proc patientreg
@id int
as
begin
select [patient_id],[Psurname], [pFirstname], [pMiddlename], [reg_date], [DOB], [Sex], [Phone_num], [Addr],[Email],[dbo].[fncomputeage](DOB) from [dbo].[Patient_registration] where [patient_id] = @id
end
please note dbo.fncompute(DOB) is a function

To call it in jdbc it goes like this

try{
String str = "{call patientreg(?)}";
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con = DriverManager.getConnection("jdbcdbc:GeneralHospit al");
cstmt = con.prepareCall(str);
cstmt.setInt(1, Integer.parseInt(t.getText()));

[code]....

after doing it this way it throwing an exception: Error:java.sql.SQLException: Parameter 1 is not an OUTPUT parameter.

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Servlets :: Form Based JAAS - How To Implement Login System Explicitly Outside Container

Jan 30, 2014

I have configured form based JAAS in my app. Basically, in web.xml I have declared security constraints on certain jsp page, declared specific roles, login and error pages. So, my login form is:

<form id="loginForm" action="j_security_check" method="post">
<p>
<label for="name">Username</label> <input name="j_username"
id="username" type="text" required/>

[Code] ....

This works fine when some user tries to access some of the pages declared in <security-constraint> tag of web.xml.

Container automatically manages login process, redirects to login page and if login details are valid, gives access to secured page.

Now, how should I implement login system so that user can go to login page (possibly same login form) and log in from there?

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Many To Many Relationship Mapping

Apr 21, 2014

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
PrintWriter pw = response.getWriter();
String connectionURL = "jdbc:mysql://localhost:3306/userdb";// userdb is the database
Connection connection;

[Code] .....

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Swing/AWT/SWT :: Relationship Between Super And Child?

Aug 27, 2014

I want to make an application and must use strategy pattern my idea is to create a super class in this case Movie Player and three sub classer and they'll komminesera with each other using strattegy pattern, one of the sub classes is Button Panel and I want to add it to Movie Player and it was to be its child,so how can I add the butt panel to Movie Player and it shall be its children?

MoviePlayer:
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import com.github.sarxos.webcam.WebcamPanel;

[code]....

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JPA Not Loading Child Objects Via One To Many Relationship

Jun 22, 2014

package com.mkyong.persistence;
import java.util.Date;
import java.io.Serializable;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;

[Code] ....

Everything is working fine but in my case One customer has Many orders but when i do customer.getOrders() the child objects are not loading . I dont know why.am i missing something here im using MYSQL database

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CompareTo Function To Identify Relationship Between Two Values In Array

Mar 28, 2014

I am having difficulty with a sorting routine. I believe that the concept is valid (although not necessarily the most efficient), but I keep running into a problem. I am trying to use the compareTo function to identify the relationship between two values in an array, but it seems to have an issue with it being a comparison of two float values.

Java Code:

for (int x = 0; x < 430; x++) {
for (int y = 0; y < 430; y++) {
if (dataArray[y].compareTo(dataArray[y + 1]) > 0); {
tempOpen = dataArray[y];

[Code] ....

It gives the compile error as follows:

File: C:UsersBradDownloadsAssignment 3Calculations.java [line: 157]
Error: Cannot invoke compareTo(float[]) on the array type float[]

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Java Servlet :: Implementing JPA Hibernate Simple Application Using One To Many Relationship

May 8, 2012

I am implementing JPA hibernate simple application using one to many relationship.

Relation ship is Comapny (1)----------- Department(*)

Company.java is as follow :

package com.web.pojo;
import java.util.ArrayList;
import java.util.List;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;

[Code] .....     

What I am doing is , I am adding new department to existing company. After execution above code

Table created are :

1. Company table with id and name
2. Department table with deptId , deptName , compId.

so at the time adding department , it does not threw any exception but updates records in department as

1(Id),Development(DeptName),null(compId) .

I am not getting why it is not updating compId column.

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Inheritance Relationship Between Type Of Actual Object And Object Reference?

Apr 15, 2014

For example I create an object like this:

BankAccount b = new SavingsAccount();

Now lets say that I want to access a method 'addInterest()' that is in the 'SavingsAccount' class I would have to do: '((SavingsAccount)s).addInterest();'

The question I have is why do I have to cast 'b' to SavingsAccount? Isn't the actual object reference of 'b' already an instance of 'SavingsAccount' class? How does the 'BankAccount' affect the object itself? I'm really confused as to what class is truly getting instantiated and how BankAccount and SavingsAccount are both functioning to make the object 'b'.

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Error In Spring Using JDBC

Aug 7, 2014

public class StudentJDBCTemplate implements StudentDao

above class giving error as

The type StudentJDBCTemplate must implement the inherited abstract method

StudentDao.listStudents()

Interface is as below

import java.util.List;
import javax.sql.DataSource;
public interface StudentDao {
public void setDataSource(DataSource ds);
public void Create(String Name,Integer age);
public void getStudent(Integer id);
public List<Student>listStudents();
public void delete(Integer id);
public void update(Integer id,Integer age);
}

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JDBC :: How To Retrieve Just One Value From Database

Nov 25, 2014

I wish to retrieve just one value from db;
 
so I use this code:

@Transactional
    public long getSequenceSedeB(Long id) {
        BigDecimal seqValue = nu
        String sql = "SELECT MAX(ID) FROM SEDE_B_ALLEGATI_A WHERE ID_SEDE=:id";
        SQLQuery query = getSession().createSQLQuery(sql);

[Code] ....

But it do not works; this is the log.

type.NullableType (NullableType.java:182) - could not read column value from result set: ID; Invalid column name

2014-11-25 14:45:14,476 WARN  [btpool0-2] util.JDBCExceptionReporter (JDBCExceptionReporter.java:77) - SQL Error: 17006, SQLState: null
2014-11-25 14:45:14,478 ERROR [btpool0-2] util.JDBCExceptionReporter (JDBCExceptionReporter.java:78) - Invalid column name

 But in the database the query
 
SELECT MAX(ID) FROM SEDE_B_ALLEGATI_A WHERE ID_SEDE=:id
 
run correctly;
 
Also I need to rewrite the statement
   query.setParameter("id", 923);
in this way
   query.setParameter("id", AAA);
 
where AAA is gotten from out of the procedure;

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JDBC :: Restore Database In Java

Feb 26, 2015

I'm having problem with my code when it comes to Restore Database in Java. This is my code:

public boolean restoreDB(String dbUserName, String dbPassword, String source) {
String[] executeCmd = new String[]{"C:Program Files (x86)MySQLMySQL Server 5.1inmysqldump ", "--user=" + "root", "--password=" + "1234" + source};
Process runtimeProcess;
try {
runtimeProcess = Runtime.getRuntime().exec(executeCmd);
int processComplete = runtimeProcess.waitFor();

[Code] ....

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JDBC In OSGI - Table Does Not Have Index

Oct 4, 2013

To insert 500 records into oracle my code is taking more than 1 minute.

I am using the below:
1) dbcp connection pool
2) Jdbc, autocommit off
3) preparestatment
4) batchupdate
5) deployed in fuse servicemix

Important thing : Table doesnot have index.

How to improve the performance. Below is the code snippet..

// Added for Transaction
conn.setAutoCommit(false);
conn.setTransactionIsolation(Connection.TRANSACTION_SERIALIZABLE);
PreparedStatement dataStmt= null;
dataStmt= conn.prepareStatement("insert statement");
for (Value value : valueList){

[Code] .....

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JDBC Update Exception - Too Few Parameters

Jul 22, 2014

So, first i search the id from table and all the fields are filled as in the screenshot. then i modify in the text boxes and click on button modify but exception comes-too few parameters. expected 6.

here is the code:

try
{
JOptionPane.showMessageDialog(null,"Record succefully modified!
ID is "+id.getText()+" Password is "+lname.getText());
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con=DriverManager.getConnection("Jdbc:Odbc:Employe eDB");
String str0=id.getText();

[Code] ....

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JDBC :: BatchUpdate Rows Affected Is Always -2

Mar 27, 2015

I have a batch process which does Bulk UPDATE statement.

After implementing batch support using Spring JDBC 4.1.6 and Oracle Jdbc Driver (ojdbc7 and ucp), the number of records affected for individual update requests (in the batch) are always retrieved as -2 (Statement.SUCCESS_NO_INFO).

Is there any way to know the rows affected for individual cases, as I have to retry the same argument with an INSERT statement after this. Technically trying to develop this as an UPSERT implementation

I tried this batch update in Three Different Ways, and in all three methods the results are same -- (It just tells me Statement.SUCCESS_NO_INFO (-2) )

Method 1  -- Direct UCP Connection and PreparedStatement
        connectionPoolMgr.startConnectionPool("mgr_pool");
        Connection connection = pds.getConnection();
       
        PreparedStatement pstmt = connection.prepareStatement(dmlSQL);
        pstmt.setInt(1, pkId);
        pstmt.setInt(2, idx * 10);
        pstmt.addBatch();
 
[Code] .....

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JDBC :: Open Connection String

Jun 25, 2015

What I have in my tnsnames.ora and verify it all works via sqlplus
 
CDB1 =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 0.0.0.0)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = cdb1)
 
[Code] ....
 
I am trying to get RJDBC to work so I can connect to Oracle from R doing some data analysis..
 
This connection string works for my local db which I have it running in my Virtual Box
 
con <- dbConnect(drv, "jdbc:oracle:thin:@//localhost:1521/orcl", "demo", "demo")
 
However, it does not work when I do it for the remote db that I really need to pull data from...
 
> con <- dbConnect(drv, "jdbc:oracle:thin:@//ymsdbppr-scan:1522/YMQCTPRD", "user_read", "user_read")

Error in .jcall(drv@jdrv, "Ljava/sql/Connection;", "connect", as.character(url)[1],  :
  java.sql.SQLException: Listener refused the connection with the following error:
ORA-12514, TNS: listener does not currently know of service requested in connect descriptor

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JDBC :: Maximum Number Of Connections

Feb 29, 2012

I am using a static initialization block to register the driver and a static synchronized method to get a connection. The problem is I need to run 15 threads but always only two threads get the connection. I want to know if there is a default maximum number of concurrent connections a DriverManager can provide or is it my threading logic that may be faulty.

CODE:

static {
     try {
Class jdbcDriverClass = Class.forName( JDBC_DRIVER );
driver = (Driver) jdbcDriverClass.newInstance();
DriverManager.registerDriver( driver );

[Code] ....

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JDBC :: Double Value Infinity Causes IllegalArgumentException

Feb 23, 2015

Trying to bind the value Double.POSITIVE_INFINITY in a prepared statement causes an IllegalArgumentException using ojdbc6 11.2.0.4.0 but it works fine in version 11.2.0.3.0:
 
Exception in thread "main" java.lang.IllegalArgumentException: Overflow
    at oracle.jdbc.driver.OraclePreparedStatement.setDoubleInternal(OraclePreparedStatement.java:7605)
    at oracle.jdbc.driver.OraclePreparedStatement.setDouble(OraclePreparedStatement.java:7513)
    at

[Code]....
 
The database used is 'Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production'. I don't see any mention regarding changes to this in the 11.2.0.4.0 change log. Is this a bug in the driver or is there some other explanation?

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JDBC Connectivity With MySQL Database

Apr 24, 2014

I created a database in mysql, but I have problems communicating with the DB in java.

Here is the error :

java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost:3306/books
at java.sql.DriverManager.getConnection(DriverManager.java:604)
at java.sql.DriverManager.getConnection(DriverManager.java:221)
at displayauthors.DisplayAuthors.main(DisplayAuthors.java:30)
java.lang.NullPointerException

[Code] ....
 
HERE IS THE CODE 

public class DisplayAuthors {   
// database URL                             
   static final String DATABASE_URL = "jdbc:mysql://localhost:3306/books";
   // launch the application
   public static void main( String args[] )

[Code] ....

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JDBC :: Unable To Establish Connection To Excel

Aug 21, 2014

I have failed with all possibilities that I know to make this program success. Getting error as :

java.sql.SQLException: [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified

Program goes like this.

import java.sql.*;
public class ExcelConnection {
public static void main (String[] args){
try {
Connection conn = getConnection("TEST.xls");
Statement stmt = conn.createStatement();

[Code] ....

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JDBC :: Storing Images To MySQL Database?

Mar 13, 2015

This question is not about syntax but a best way to handle something. What is the best way to store a image into a database? For example converting it into binary etc. I just wanted to get some opinions.

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JDBC Delete Command Locking Database?

Aug 27, 2014

I have a problem where i cant seem to get this simple delete command working. Everytime i run it it just locks the database and crashes

The id parameter exists in the database the database is small. Only a few tables. update commands work completely fine.

The id is an in and resulting command is - DELETE from Employees where ID = 2;

public static void EmployeeDeleteByID(int idIn){
Connection c = null;
Statement stmt = null;
try {
c = Connect();
c.setAutoCommit(false);
System.out.println("Opened database successfully");

[code]....

Error after running : java.sql.SQLException: database is locked

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How To Connect To A Remote SQL Server Using JDBC Driver

Jan 15, 2015

I'm working on an application I made a few years ago. At that time I connected to a local database so my address was 'jdbc:mysql://localhost:3306/'. That database is long gone so I recreated it on one of my hosted servers but I'm a little unsure of how to connect to it. At the moment I'm trying "jdbc:mysql://www.mydomain.com:3306/" but it is giving me an access denied error.

java.sql.SQLException: Access denied for user 'myusername'@'c-[my-ip].hsd1.pa.comcast.net' (using password: YES)Every result on Google seems to use localhost so I'm having a little difficulty figuring out the correct format.

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JDBC Update Based On HTML Page

Mar 19, 2014

i have a page where username is displayed...i want to uodate my table based on the page value i. e username..how can this be done

String sql;
sql = "UPDATE test SET username=? WHERE password=?";
PreparedStatement statement = conn.prepareStatement(sql);
statement.setString(1, "jumbomail@com");
statement.setString(2, "password");

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JDBC :: Java Oracle Rac Connection URL Using Scan

Dec 30, 2014

I am trying to connect to an oracle rac using jdbc thin . when i use the scan as the host, like this

String url = "jdbc:oracle:thin:@//<scan>:port/servicename;

I get error 1153, connection refused

but when i use the ip of the rac instead of the scan

String url = "jdbc:oracle:thin:@//<ip>:port/servicename;

The connection is successful
 
Is the issue at the application level? or is the problem with the server ....

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