Two PrintWriter objects in a servlet class
Hi-
In one of my servlet, I have written the below code
PrintWriter out=res.getWriter();
+ out.write("hi");+
+ out.close();+
+ PrintWriter out2=res.getWriter();+
+ out2.write("hi again");+
+ out2.close();+
This will print "hi" but not printing "hi again".
Can anybody tell me what would be the reason behind this..
Thanks in advance.
Do you take any time to think about your questions, or do you just post them in rapid fire?
In one of your other postings you already noted that when you close a PrintWriter it doesn't give an Exception when you try to write to it again.
So I would guess because you've close it, you can't just open it by using the getWriter() method.
Or your class on the other end only reads until EOF and since you've already closed it, there is nothing else to read.
Similar Messages
-
Two response objects within one servlet...
Heya guys, quite new to java and got stuck for the whole day on this.
I need to combine two responses inside one servlet. One response retrieves picture from the database and it works fine. Another one retrieves text from database also works fine on its own. Second i try to use both end up with hundreds of exceptions.
Any idea what to do, not how...but what???
ThanksCompiling 1 source file to F:\gopal\weba\WebApplication6\build\web\WEB-INF\classes
F:\gopal\weba\WebApplication6\src\java\NewServlet.java:48:
processRequest(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse,javax.servlet.http.HttpServletResponse) in NewServlet cannot be applied to (javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
processRequest(request, response);
F:\gopal\weba\WebApplication6\src\java\NewServlet.java:57: processRequest(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse,javax.servlet.http.HttpServletResponse) in NewServlet cannot be applied to (javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
processRequest(request, response);
2 errors
F:\gopal\weba\WebApplication6\nbproject\build-impl.xml:295: The following error occurred while executing this line:
F:\gopal\weba\WebApplication6\nbproject\build-impl.xml:149: Compile failed; see the compiler error output for details.
BUILD FAILED (total time: 2 seconds)
You cannot use two response object. -
Synchronising two different objects
Hi everyone,
I am asking for your help while i am writing an example code. I want to learn how to synchronise two differents objects.
The first class is actually a MIDlet, which has to increase a counter and display it until the second class send a message to the midlet. At this moment, the midlet has to display the message. I am actualy thinking about adding another thread, but lets speak only about the midlet and the calculator :)
I think there is a problem in my way of thinking, that's why i am asking for your help :
Here is an extract of my midlet code :
public class Main extends MIDlet implements CommandListener {
private static boolean isFromCalculator = false;
private static boolean displayUsed = false;
Command exitCmd = new Command("Exit", Command.EXIT, 1);
Command pauseCmd = new Command("Pause", Command.OK, 1);
TextBox tb = new TextBox("Principal", "", 200, 1);
int cpt = 0;
Calculator calc = new Calculator();
public Main()
calc.start();
tb.addCommand(exitCmd);
tb.addCommand(pauseCmd);
tb.setCommandListener(this);
public void startApp() {
process();
public void pauseApp() {
public void destroyApp(boolean unconditional) {
public void process()
// Tant que l'on a pas d'infos des deux autres threads, on compte !
while ( !isFromCalculator )
if ( displayUsed )
synchronized(this){
try{
wait();
catch (Exception e)
e.printStackTrace();
display("Principal : " + cpt + "\n", 1);
cpt++;
deroute();
public void display(String message, int time)
displayUsed = true;
tb.delete(0, tb.size());
tb.insert(message, tb.size());
Display.getDisplay(this).setCurrent(tb);
synchronized(this)
try{
wait(time);
catch (Exception e )
{e.printStackTrace();}
displayUsed = false;
notifyAll();
public void deroute()
if ( isFromCalculator == true )
// Manage Calculator message
display(calc.Message(), 1000);
isFromCalculator = false;
process();
public static void setBoolFromCalculator(boolean b)
isFromCalculator = b;
public static boolean isDisplayUsed()
return displayUsed;
}And here is my calculator code :
public class Calculator extends Thread{
private int iterator;
private boolean quit;
public Calculator()
iterator = 0;
quit = false;
public void run()
while ( !quit )
iterator++;
// 100 Boucles maxi
if ( iterator > 100)
quit = true;
try{
sleep(1000);
catch (InterruptedException e )
System.out.println("Calculator sleep error : ");
e.printStackTrace();
if (iterator % 10 == 0)
if ( !Main.isDisplayUsed() )
synchronized(this)
try{
wait();
catch(Exception e)
e.printStackTrace();
Main.setBoolFromCalculator(true);
public String Message()
return " Calculator - Iterator = " + iterator +"\n" ;
}May i ask your any advice ?
Regards,t00f wrote:
Hi everyone,
I am asking for your help while i am writing an example code. I want to learn how to synchronise two differents objects.Note that you don't "synchronize objects." You synchronize methods or blocks of code on objects (or, more properly I suppose, on their locks). This may seem like a petty distinction, but when you say "synchronize objects," it sounds like you think that you're controlling access to an object. That is not the case. If you need further explanation, let me know. -
Two remote objects calls on the same php class
Hi to all,
I've encountered a strange issue while developing with remote objects.
I've a mxml component with an init() method inside which is called by a menu.
When the init() method is called it makes 7 remote object calls which are bound to some components' dataprovider.
Among this calls I've got 2 remote object which refer to the same remote class. This because I have to call the class twice and the bind the result to two different combobox. Below you find the code:
<mx:RemoteObject id="myFile" source="myRemoteClass" destination="amfphp" showBusyCursor="true" makeObjectsBindable="true" fault="traceFault(event)"/>
<mx:RemoteObject id="myXls" source="myRemoteClass" destination="amfphp" showBusyCursor="true" makeObjectsBindable="true" fault="traceFault(event)"/>
in the init function I make this calls:
myFile.listDir("dir_1")
myXls.listDir("dir_2")
then in the mxml code I bound the result of myFile to combobox1 and the result of myXls on combobox2.
The problem arise when I call the myXls' listDir method. When I call it I receive the following error:
code:
Client.Error.DeliveryInDoubt
Message:
Channel disconnected
Detail:
Channel disconnected before an acknowledgement was received
The strange thing is that not only the myXls object returns this error, but also all the other 6 remote object return the same error above.
I'm not sure, but I guess that the error could be caused by the two remote object which call the same php remote class. If I comment one of the two calls everything works fine.
Do you have any suggestion about?
Thanks!!
Bye
LukeHi Jan.
1) We have the 2 VO, each with 3 rows to fill in data. What I mean is that when i just fill in all the fields for the first row of the first VO, and the value of one of these fields is bigger than 50, then after the exception is thrown and the message is displayed, the fields for the first VO are duplicated and shown in the second VO as if the user had inserted them.
2) We tried yesterday the validateEntity and a Method and Atributte Validator approaches after reading that white paper with the same results.
The validation is correctly done using any of the those methods.
I will try to reproduce this issue with the HR schema.
Thanks in advance once again. -
Two equal objects, but different classes?
When programming on binding Referenceable object with JDK version 1.5.0_06, I have encountered a very strange phenomenon: two objects are equal, but they belong to different classes!!!
The source codes of the program bind_ref.java are listed as below:
+++++++++++++++++++++++++++++++++++++++++++++++++++++++
import java.lang.*;
import java.io.*;
import java.util.*;
import javax.naming.*;
import javax.naming.spi.ObjectFactory;
import java.util.Hashtable;
public class bind_ref {
public static void main( String[] args ) {
// Set up environment for creating the initial context
Hashtable env = new Hashtable();
env.put( Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.fscontext.RefFSContextFactory" );
env.put( Context.PROVIDER_URL, "file:/daniel/" );
Context ctx = null;
File f = null;
Fruit fruit1 = null, fruit2 = null;
byte [] b = new byte[10];
try {
ctx = new InitialContext( env );
Hashtable the_env = ctx.getEnvironment();
Object [] keys = the_env.keySet().toArray();
int key_sz = keys.length;
fruit1 = new Fruit( "Orange" );
SubReference ref1 = fruit1.getReference();
ctx.rebind( "reference", fruit1 );
fruit2 = ( Fruit )ctx.lookup( "reference" );
System.out.println( "ref1's class = (" + ref1.getClass().toString() + ")" );
System.out.println( "fruit2.myRef's class = (" + fruit2.myRef.getClass().toString() + ")" );
System.out.println( "( ref1 instanceof SubReference ) = " + ( ref1 instanceof SubReference ) );
System.out.println( "( fruit2.myRef instanceof SubReference ) = " + ( fruit2.myRef instanceof SubReference ) );
System.out.println( "ref1.hashCode = " + ref1.hashCode() + ", fruit2.myRef.hashCode = " + fruit2.myRef.hashCode() );
System.out.println( "ref1.equals( fruit2.myRef ) = " + ref1.equals( fruit2.myRef ) );
} catch( Exception ne ) {
System.err.println( "Exception: " + ne.toString() );
System.exit( -1 );
+++++++++++++++++++++++++++++++++++++++++++++++++++++++
All the outputs are shown as below:
=======================================================
Fruit: I am created at Mon Jun 18 11:35:13 GMT+08:00 2007
SubReference: I am created at Mon Jun 18 11:35:13 GMT+08:00 2007
--------- (i)subref.hashCode() = (-1759114666)
SubReference: I am created at Mon Jun 18 11:35:13 GMT+08:00 2007
--------- (i)subref.hashCode() = (-1759114666)
FruitFactory: obj's class = (class javax.naming.Reference)
FruitFactory: obj's hashCode = -1759114666
FruitFactory: obj = (Reference Class Name: Fruit
Type: fruit
Content: Orange
FruitFactory: ( obj instanceof SubReference ) = false
FruitFactory: subref_class_name = (Fruit)
Fruit: I am created at Mon Jun 18 11:35:13 GMT+08:00 2007
ref1's class = (class SubReference)
fruit2.myRef's class = (class javax.naming.Reference)
( ref1 instanceof SubReference ) = true
( fruit2.myRef instanceof SubReference ) = false
ref1.hashCode = -1759114666, fruit2.myRef.hashCode = -1759114666
ref1.equals( fruit2.myRef ) = true
========================================================
I hightlight the critical codes and outputs related to the strangeness with bold texts.
Who can tell me what happens? Is it really possible that two objects belonging to different classes are equal? If so, why that?It can also depend on how you implement the equals method.
class Cat {
String name;
Cat(String n) {
name = n;
class Dog {
String name;
Dog(String n) {
name = n;
public boolean equals(Object o) {
return name.equals(o.name);
public static void main(String[] args) {
Dog d = new Dog("Fred");
Cat c = new Cat("Fred");
System.out.println(d.equals(c));
} -
Servlet class creating multiple objects
Hi
I am using WSAD 5.0. My servlet is acting as a controller but when when i m invoking the servlet from 2 JSPs , server is creating 2 objects for that servlet because of which i m not able to get the values which was set by the first servlet object..
Can somebody tell me why the server is creating 2 objects for my servlet.
AlokNo.. its is invoked only once.
If an instance of the servlet does not exist, the Web container
Loads the servlet class.
Creates an instance of the servlet class.
Initializes the servlet instance by calling the init method. Initialization is covered in Initializing a Servlet.
Invokes the service method, passing a request and response object. Service methods are discussed in the section Writing Service Methods.
http://java.sun.com/j2ee/tutorial/1_3-fcs/doc/Servlets4.html
MeTitus -
How to access an external text file in a Servlet class?
I do the regular file I/O in the Servlet class. But when I run Servlet class, text file is not loaded. Can sb tell me how to do it?
Thanx
RichardHi DrClap;
the following is the main servlet code, which calls other two classes.
===================================================================
import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class TermsServlet extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
resp.setContentType("text/html");
PrintWriter out = resp.getWriter();
out.println("<HTML>");
out.println("<TITLE>Computer Terms and Acronyms</TITLE>");
out.println("<BODY>");
out.println("<H1>Computer Terms and Acronyms</H1>");
out.println("<TABLE BORDER=2>");
out.println("<TR><TH>Term<TH>Meaning</TR>");
TermsAccessor tax = new TermsAccessor("terms.txt");
Iterator e = tax.iterator();
while (e.hasNext()) {
Term t = (Term)e.next();
out.print("<TR><TD>");
out.print(t.term);
out.print("<TD>");
out.print(t.definition);
out.println("</TR>");
out.println("</TABLE>");
out.println("<HR></HR>");
out.println("</BODY></HTML>");
=================================================
import java.io.*;
import java.util.*;
public class TermsAccessor {
protected BufferedReader is;
protected String ident;
public TermsAccessor(String inputFileName) throws IOException {
is = new BufferedReader(new FileReader(inputFileName));
String ident = is.readLine();
public String getIdent() {
return ident;
public Iterator iterator() {
return new Iterator() {
String line, term, defn;
public boolean hasNext() {
try {
return ((line = is.readLine()) != null);
} catch (IOException e) {
System.err.println("IO Error: " + e);
return false;
public Object next() {
int i;
while ((i = line.indexOf("\t"))<0 && hasNext());
if (line == null)
throw new IllegalStateException("Invalid EOF state");
term = line.substring(0, i);
defn = line.substring(i+1);
return new Term(term, defn);
public void remove() {
throw new UnsupportedOperationException();
=============================================================
public class Term {
public String term;
public String definition;
public Term(String t, String d) {
term = t;
definition = d;
=================================================================
part of [terms.txt] file as following:
$Id: terms.txt,v 1.5 2000/03/17 04:08:55 $
AMD American Micro Devices: a chip maker that competes with Intel.
API Application Programmer Interface: a set of functions that a programmer can use
ASP Active Server Pages, a Microsoft technology for imbedding certain commands in HTML pages
BSD Berkeley Software Distribution, one of the two major flavors of UNIX. See OpenBSD
C A computer programming language invented for writing UNIX in, and very popular in the late 1970's through the 1990's
C++ An Object-Oriented language heavily based on C; recently displaced by Java
CGI Common Gateway Interface; a script or program used to handle a form on a web page
COBOL COmmon Business Oriented Language, a programming language used mainly for large-scale financial applications.
CPU Central Processing Unit, the "chip" that gives a computer its low-level personality ("machine instruction set") and performs individual instructions (add, multiply, compare...). Common CPUs include Intel/AMD "PC", SPARC, Alpha.
=================================================================
the "terms.txt" file and above class files are under the same directory. I use J2EE server to deploy the file, after run, the erro mesage is:"The requested resource (terms.txt (The system cannot find the file specified)) is not available." That means server can not locate the terms.txt file. So what file path should I use?
Thanx
Richard -
Non-servlet class in servlet program
hi,
I declare a non-servlet class which is defined by myself in a servlet class. I passed the complie but got an runtime error said NoClassDefFoundError. Does anyone can help me? Thanks.
The following is my code.
//get the search string from web form
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.net.*;
import java.util.*;
public class SearchEngines extends HttpServlet {
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
String searchString = (String) request.getParameter("searchString");
String searchType = (String) request.getParameter("searchType");
Date date = new java.util.Date();
response.setContentType("text/html");
PrintWriter out = response.getWriter();
Vector doc_retrieved = new Vector();
BooleanSearch bs = new BooleanSearch();
doc_retrieved=bs.beginSearch(searchString, searchType);
out.println("<HTML><HEAD><TITLE>Hello Client!</TITLE>" +
"</HEAD><BODY>Hello Client! " + doc_retrieved.size() + " documents have been found.</BODY></HTML>");
out.close();
response.sendError(response.SC_NOT_FOUND,
"No recognized search engine specified.");
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
// a search engine implements the boolean search
import java.io.*;
import java.util.*;
import au.com.pharos.gdbm.GdbmFile;
import au.com.pharos.gdbm.GdbmException;
import au.com.pharos.packing.StringPacking;
import IRUtilities.Porter;
public class BooleanSearch{
BooleanSearch(){;}
public Vector beginSearch(String searchString, String searchType){
Vector query_vector = queryVector(searchString);
Vector doc_retrieved = new Vector();
if (searchType.equals("AND"))
doc_retrieved = andSearch(query_vector);
else
doc_retrieved = orSearch(query_vector);
return doc_retrieved;
private Vector queryVector(String query){
Vector query_vector = new Vector();
try{
GdbmFile dbTerm = new GdbmFile("Term.gdbm", GdbmFile.READER);
dbTerm.setKeyPacking(new StringPacking());
dbTerm.setValuePacking(new StringPacking());
query = query.toLowerCase();
StringTokenizer st = new StringTokenizer(query);
String word = "";
String term_id = "";
while (st.hasMoreTokens()){
word = st.nextToken();
if (!search(word)){
word = Stemming(word);
if (dbTerm.exists(word)){
// System.out.println(word);
term_id = (String) dbTerm.fetch(word);
query_vector.add(term_id);
catch(GdbmException e){
System.out.println(e.getMessage());
return query_vector;
private Vector orSearch(Vector query_vector){
Vector doc_retrieved = new Vector();
try{
GdbmFile dbVector = new GdbmFile("Vector.gdbm", GdbmFile.READER);
dbVector.setKeyPacking(new StringPacking());
dbVector.setValuePacking(new StringPacking());
int doc_num = dbVector.size();
String doc_id = "";
String temp = "";
for (int i = 1; i <= doc_num; i++){
boolean found = false;
doc_id = String.valueOf(i);
temp = (String) dbVector.fetch(doc_id);
StringTokenizer st = new StringTokenizer(temp);
while (st.hasMoreTokens() && !found){
temp = st.nextToken();
StringTokenizer st1 = new StringTokenizer(temp, ",");
String term = st1.nextToken();
if (query_vector.contains(term)){
doc_retrieved.add(doc_id);
found = true;
catch(GdbmException e){
System.out.println(e.getMessage());
return doc_retrieved;
private Vector andSearch(Vector query_vector){
Vector doc_retrieved = new Vector();
try{
GdbmFile dbVector = new GdbmFile("Vector.gdbm", GdbmFile.READER);
dbVector.setKeyPacking(new StringPacking());
dbVector.setValuePacking(new StringPacking());
int doc_num = dbVector.size();
String doc_id = "";
String temp = "";
for (int i = 1; i <= doc_num; i++){
Vector doc_vector = new Vector();
boolean found = true;
doc_id = String.valueOf(i);
temp = (String) dbVector.fetch(doc_id);
StringTokenizer st = new StringTokenizer(temp);
while (st.hasMoreTokens()){
temp = st.nextToken();
StringTokenizer st1 = new StringTokenizer(temp, ",");
String term = st1.nextToken();
doc_vector.add(term);
for (int j = 0; j < query_vector.size(); j++){
temp = (String) query_vector.get(j);
if (doc_vector.contains(temp))
found = found & true;
else
found = false;
if (found)
doc_retrieved.add(doc_id);
catch(GdbmException e){
System.out.println(e.getMessage());
return doc_retrieved;
private String Stemming(String str){
Porter st = new Porter ();
str = st.stripAffixes(str);
return str;
private boolean search(String str){
//stop word list
String [] stoplist ={"a","about","above","according","across","actually","adj","after","afterwards","again",
"against","all","almost","alone","along","already","also","although","always","am","among",
"amongst","an","and","another","any","anyhow","anyone","anything","anywhere","are",
"aren't","around","as","at","away","be","became","because","become","becomes","becoming",
"been","before","beforehand","begin","beginning","behind","being","below","beside",
"besides","between","beyond","billion","both","but","by","can","cannot","can't",
"caption","co","co.","could","couldn't","did","didn't","do","does","doesn't","don't",
"down","during","each","eg","eight","eighty","either","else","elsewhere","end","ending",
"enough","etc","even","ever","every","everyone","everything","everywhere","except",
"few","fifty","first","five","for","former","formerly","forty","found","four","from",
"further","had","has","hasn't","have","haven't","he","he'd","he'll","hence","her","here",
"hereafter","hereby","herein","here's","hereupon","hers","he's","him","himself","his",
"how","however","hundred","i'd","ie","if","i'll","i'm","in","inc.","indeed","instead",
"into","is","isn't","it","its","it's","itself","i've","last","later","latter","latterly",
"least","less","let","let's","like","likely","ltd","made","make","makes","many","maybe",
"me","meantime","meanwhile","might","million","miss","more","moreover","most","mostly",
"mr","mrs","much","must","my","myself","namely","neither","never","nevertheless","next",
"nine","ninety","no","nobody","none","nonetheless","noone","nor","not","nothing","now",
"nowhere","of","off","often","on","once","one","one's","only","onto","or","other","others",
"otherwise","our","ours","ourselves","out","over","overall","own","per","perhaps","pm",
"rather","recent","recently","same","seem","seemed","seeming","seems","seven","seventy",
"several","she","she'd","she'll","she's","should","shouldn't","since","six","sixty",
"so","some","somehow","someone","sometime","sometimes","somewhere","still","stop",
"such","taking","ten","than","that","that'll","that's","that've","the","their","them",
"themselves","then","thence","there","thereafter","thereby","there'd","therefore",
"therein","there'll","there're","there's","thereupon","there've","these","they","they'd",
"they'll","they're","they've","thirty","this","those","though","thousand","three","through",
"throughout","thru","thus","to","together","too","toward","towards","trillion","twenty",
"two","under","unless","unlike","unlikely","until","up","upon","us","used","using",
"very","via","was","wasn't","we","we'd","well","we'll","were","we're","weren't","we've",
"what","whatever","what'll","what's","what've","when","whence","whenever","where",
"whereafter","whereas","whereby","wherein","where's","whereupon","wherever","whether",
"which","while","whither","who","who'd","whoever","whole","who'll","whom","whomever",
"who's","whose","why","will","with","within","without","won't","would","wouldn't",
"yes","yet","you","you'd","you'll","your","you're","yours","yourself","you've"};
int i = 0;
int j = stoplist.length;
int mid = 0;
boolean found = false;
while (i < j && !found){
mid = (i + j)/2;
if (str.compareTo(stoplist[mid]) == 0)
found = true;
else
if (str.compareTo(stoplist[mid]) < 0)
j = mid;
else
i = mid + 1;
return found;
}please show us the full error message.
it sounds like a classpath problem... -
IS it possible to define two resultset objects with two different queries inside the same DB class?java.sql.SQLException: Invalid state, the ResultSet object is closed.
at net.sourceforge.jtds.jdbc.JtdsResultSet.checkOpen(JtdsResultSet.java:299)
at net.sourceforge.jtds.jdbc.MSCursorResultSet.next(MSCursorResultSet.java:1123)
at DB5.getDetails(Daily_Quote_Response_report.java:238)
at Daily_Quote_Response_report.main(Daily_Quote_Response_report.java:74)
java.util.List items = null;
String query;
String query2;
try {
query =
"select * from oqrep_except_resp_summary";
query2 = "select * from oqrep_except_resp_detail";
Statement state = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_READ_ONLY);
ResultSet rs = state.executeQuery(query);
ResultSet rs2 = state.executeQuery(query2);
//cannot create two rs objects // ResultSet rs2 = state.executeQuery(query);
items = new ArrayList();Edited by: bobz on 03-Dec-2009 11:16
Edited by: bobz on 03-Dec-2009 11:16Note: This thread was originally posted in the [Java Programming|http://forums.sun.com/forum.jspa?forumID=31] forum, but moved to this forum for closer topic alignment.
-
Uix two view-objects on one entity-object synchronize
Hi All
I want to add some uix pages to an old project using ADF UIX and Business Components.
I have an entity object to a table witch about 50 fields.
Now I create two view objects due to a better performance. One witch seven attributes for the overwiew and one with all attributes for the detail page.
They are related via a view link.
I create the overview as a read-only-table and the detail-page as an input-form.
The proplem is that the synchronization don't work. The detail page shows the first dataset ever.
Has anyone a solution or a tip where I can found that?
Is where a performance problem if I use one view-object for both pages?
Thanks in advance
RogerUse custom DataAction for the first page:
package controller;
import oracle.adf.controller.struts.actions.DataAction;
import oracle.adf.controller.struts.actions.DataActionContext;
public class Class1 extends DataAction
protected void validateModelUpdates(DataActionContext actionContext)
//super.validateModelUpdates(actionContext);
// put you custom validation here
}http://www.oracle.com/technology/products/jdev/collateral/papers/10g/ADFBindingPrimer/index.html#usingdataaction
Message was edited by:
Sasha
Message was edited by:
Sasha -
Error while saving data using two entity objects (EO)
Hi All,
i am using two entity objects for saving the date in two different tables.
on my page i am having two tables and two save buttons for saving the data in the respective tables.
if i am not entering any data on the first table and putting valid data on the second table and click on the save button.
it is going into error saying "Null Pointer Exception"..
i am using getTransaction.commit() in my AM.
so it is trying to save all the data in both the tables.
i want to commit data of the respective table for which the save button is clicked.
Waiting for ur replyHi,
i am using the following code for saving the data in the AM
// TO SAVE THE JOB ASSIGNMENT DETAILS
public void saveJobAssignmentDetails(String projectId)
EmpAssignmentVOImpl empAssignVO = getEmpAssignmentVO1();
getTransaction().commit(); // Line where i am getting the error
rowNumberCountJobAssign = 0; // IN JOB ASSIGNMENT
// EXECUTING THE DISPLAY FUNCTION AGAIN SO TAHT ALL SAVED FIELD ARE READONLY AS REQUIRED
displayJobAssign(projectId);
if(empAssignVO.getRowCount() != 0)
throw new OAException("Job assignment details have been saved successfully. ",OAException.CONFIRMATION);
Stack trace :
oracle.apps.fnd.framework.OAException: oracle.jbo.DMLException: JBO-26041: Failed to post data to database during "Insert": SQL Statement "BEGIN INSERT INTO pa_job_bill_rate_overrides(START_DATE_ACTIVE,LAST_UPDATE_DATE,LAST_UPDATED_BY,CREATION_DATE,CREATED_BY,LAST_UPDATE_LOGIN,BILL_RATE_UNIT,PROJECT_ID,RECORD_VERSION_NUMBER,JOB_BILL_RATE_OVERRIDE_ID,RATE_CURRENCY_CODE) VALUES (:1,:2,:3,:4,:5,:6,:7,:8,:9,:10,:11) RETURNING JOB_BILL_RATE_OVERRIDE_ID, JOB_ID, START_DATE_ACTIVE, LAST_UPDATE_DATE, LAST_UPDATED_BY, CREATION_DATE, CREATED_BY, LAST_UPDATE_LOGIN, RATE, BILL_RATE_UNIT, PROJECT_ID, TASK_ID, END_DATE_ACTIVE, RECORD_VERSION_NUMBER, RATE_CURRENCY_CODE, DISCOUNT_PERCENTAGE, RATE_DISC_REASON_CODE INTO :12, :13, :14, :15, :16, :17, :18, :19, :20, :21, :22, :23, :24, :25, :26, :27, :28; END;".
at oracle.apps.fnd.framework.OAException.wrapperInvocationTargetException(OAException.java:972)
at oracle.apps.fnd.framework.server.OAUtility.invokeMethod(OAUtility.java:210)
at oracle.apps.fnd.framework.server.OAUtility.invokeMethod(OAUtility.java:152)
at oracle.apps.fnd.framework.server.OAApplicationModuleImpl.invokeMethod(OAApplicationModuleImpl.java:721)
at tcsl.oracle.apps.pa.jobBillRateAndAssignment.webui.jobBillRateAndAssignmentCO.processFormRequest(jobBillRateAndAssignmentCO.java:357)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(OAWebBeanHelper.java:799)
at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(OAWebBeanContainerHelper.java:363)
at oracle.apps.fnd.framework.webui.OAPageLayoutHelper.processFormRequest(OAPageLayoutHelper.java:1118)
at oracle.apps.fnd.framework.webui.beans.layout.OAPageLayoutBean.processFormRequest(OAPageLayoutBean.java:1579)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:995)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:961)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(OAWebBeanHelper.java:816)
at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(OAWebBeanContainerHelper.java:363)
at oracle.apps.fnd.framework.webui.beans.form.OAFormBean.processFormRequest(OAFormBean.java:395)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:995)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:961)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(OAWebBeanHelper.java:816)
at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(OAWebBeanContainerHelper.java:363)
at oracle.apps.fnd.framework.webui.beans.OABodyBean.processFormRequest(OABodyBean.java:363)
at oracle.apps.fnd.framework.webui.OAPageBean.processFormRequest(OAPageBean.java:2633)
at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:1659)
at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:497)
at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:418)
at OA.jspService(OA.jsp:40)
at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:56)
at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:317)
at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:465)
at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:379)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:727)
at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:306)
at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:767)
at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:259)
at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:106)
at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:803)
at java.lang.Thread.run(Thread.java:534)
## Detail 0 ##
java.sql.SQLException: ORA-01400: cannot insert NULL into ("PA"."PA_JOB_BILL_RATE_OVERRIDES"."JOB_ID")
ORA-06512: at line 1
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
at oracle.jdbc.ttc7.TTIoer.processError(TTIoer.java:289)
at oracle.jdbc.ttc7.Oall7.receive(Oall7.java:583)
at oracle.jdbc.ttc7.TTC7Protocol.doOall7(TTC7Protocol.java:1983)
at oracle.jdbc.ttc7.TTC7Protocol.parseExecuteFetch(TTC7Protocol.java:1141)
at oracle.jdbc.driver.OracleStatement.executeNonQuery(OracleStatement.java:2154)
at oracle.jdbc.driver.OracleStatement.doExecuteOther(OracleStatement.java:2036)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:2880)
at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:622)
at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:698)
at oracle.jbo.server.OracleSQLBuilderImpl.doEntityDML(OracleSQLBuilderImpl.java:371)
at oracle.jbo.server.EntityImpl.doDML(EntityImpl.java:5108)
at tcsl.oracle.apps.pa.jobBillRateAndAssignment.schema.server.JobBillRateEOImpl.doDML(JobBillRateEOImpl.java:124)
at oracle.jbo.server.EntityImpl.postChanges(EntityImpl.java:4015)
at oracle.apps.fnd.framework.server.OAEntityImpl.postChanges(OAEntityImpl.java:1676)
at oracle.jbo.server.DBTransactionImpl.doPostTransactionListeners(DBTransactionImpl.java:2694)
at oracle.jbo.server.DBTransactionImpl.postChanges(DBTransactionImpl.java:2540)
at oracle.jbo.server.DBTransactionImpl.commitInternal(DBTransactionImpl.java:1783)
at oracle.jbo.server.DBTransactionImpl.commit(DBTransactionImpl.java:1976)
at oracle.apps.fnd.framework.server.OADBTransactionImpl.commit(OADBTransactionImpl.java:680)
at tcsl.oracle.apps.pa.jobBillRateAndAssignment.server.jobBillRateAndAssignmentAMImpl.saveJobAssignmentDetails(jobBillRateAndAssignmentAMImpl.java:772)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at oracle.apps.fnd.framework.server.OAUtility.invokeMethod(OAUtility.java:189)
at oracle.apps.fnd.framework.server.OAUtility.invokeMethod(OAUtility.java:152)
at oracle.apps.fnd.framework.server.OAApplicationModuleImpl.invokeMethod(OAApplicationModuleImpl.java:721)
at tcsl.oracle.apps.pa.jobBillRateAndAssignment.webui.jobBillRateAndAssignmentCO.processFormRequest(jobBillRateAndAssignmentCO.java:357)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(OAWebBeanHelper.java:799)
at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(OAWebBeanContainerHelper.java:363)
at oracle.apps.fnd.framework.webui.OAPageLayoutHelper.processFormRequest(OAPageLayoutHelper.java:1118)
at oracle.apps.fnd.framework.webui.beans.layout.OAPageLayoutBean.processFormRequest(OAPageLayoutBean.java:1579)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:995)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:961)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(OAWebBeanHelper.java:816)
at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(OAWebBeanContainerHelper.java:363)
at oracle.apps.fnd.framework.webui.beans.form.OAFormBean.processFormRequest(OAFormBean.java:395)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:995)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:961)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(OAWebBeanHelper.java:816)
at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(OAWebBeanContainerHelper.java:363)
at oracle.apps.fnd.framework.webui.beans.OABodyBean.processFormRequest(OABodyBean.java:363)
at oracle.apps.fnd.framework.webui.OAPageBean.processFormRequest(OAPageBean.java:2633)
at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:1659)
at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:497)
at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:418)
at OA.jspService(OA.jsp:40)
at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:56)
at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:317)
at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:465)
at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:379)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:727)
at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:306)
at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:767)
at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:259)
at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:106)
at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:803)
at java.lang.Thread.run(Thread.java:534)
java.sql.SQLException: ORA-01400: cannot insert NULL into ("PA"."PA_JOB_BILL_RATE_OVERRIDES"."JOB_ID")
ORA-06512: at line 1
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
at oracle.jdbc.ttc7.TTIoer.processError(TTIoer.java:289)
at oracle.jdbc.ttc7.Oall7.receive(Oall7.java:583)
at oracle.jdbc.ttc7.TTC7Protocol.doOall7(TTC7Protocol.java:1983)
at oracle.jdbc.ttc7.TTC7Protocol.parseExecuteFetch(TTC7Protocol.java:1141)
at oracle.jdbc.driver.OracleStatement.executeNonQuery(OracleStatement.java:2154)
at oracle.jdbc.driver.OracleStatement.doExecuteOther(OracleStatement.java:2036)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:2880)
at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:622)
at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:698)
at oracle.jbo.server.OracleSQLBuilderImpl.doEntityDML(OracleSQLBuilderImpl.java:371)
at oracle.jbo.server.EntityImpl.doDML(EntityImpl.java:5108)
at tcsl.oracle.apps.pa.jobBillRateAndAssignment.schema.server.JobBillRateEOImpl.doDML(JobBillRateEOImpl.java:124)
at oracle.jbo.server.EntityImpl.postChanges(EntityImpl.java:4015)
at oracle.apps.fnd.framework.server.OAEntityImpl.postChanges(OAEntityImpl.java:1676)
at oracle.jbo.server.DBTransactionImpl.doPostTransactionListeners(DBTransactionImpl.java:2694)
at oracle.jbo.server.DBTransactionImpl.postChanges(DBTransactionImpl.java:2540)
at oracle.jbo.server.DBTransactionImpl.commitInternal(DBTransactionImpl.java:1783)
at oracle.jbo.server.DBTransactionImpl.commit(DBTransactionImpl.java:1976)
at oracle.apps.fnd.framework.server.OADBTransactionImpl.commit(OADBTransactionImpl.java:680)
at tcsl.oracle.apps.pa.jobBillRateAndAssignment.server.jobBillRateAndAssignmentAMImpl.saveJobAssignmentDetails(jobBillRateAndAssignmentAMImpl.java:772)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at oracle.apps.fnd.framework.server.OAUtility.invokeMethod(OAUtility.java:189)
at oracle.apps.fnd.framework.server.OAUtility.invokeMethod(OAUtility.java:152)
at oracle.apps.fnd.framework.server.OAApplicationModuleImpl.invokeMethod(OAApplicationModuleImpl.java:721)
at tcsl.oracle.apps.pa.jobBillRateAndAssignment.webui.jobBillRateAndAssignmentCO.processFormRequest(jobBillRateAndAssignmentCO.java:357)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(OAWebBeanHelper.java:799)
at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(OAWebBeanContainerHelper.java:363)
at oracle.apps.fnd.framework.webui.OAPageLayoutHelper.processFormRequest(OAPageLayoutHelper.java:1118)
at oracle.apps.fnd.framework.webui.beans.layout.OAPageLayoutBean.processFormRequest(OAPageLayoutBean.java:1579)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:995)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:961)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(OAWebBeanHelper.java:816)
at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(OAWebBeanContainerHelper.java:363)
at oracle.apps.fnd.framework.webui.beans.form.OAFormBean.processFormRequest(OAFormBean.java:395)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:995)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequestChildren(OAWebBeanHelper.java:961)
at oracle.apps.fnd.framework.webui.OAWebBeanHelper.processFormRequest(OAWebBeanHelper.java:816)
at oracle.apps.fnd.framework.webui.OAWebBeanContainerHelper.processFormRequest(OAWebBeanContainerHelper.java:363)
at oracle.apps.fnd.framework.webui.beans.OABodyBean.processFormRequest(OABodyBean.java:363)
at oracle.apps.fnd.framework.webui.OAPageBean.processFormRequest(OAPageBean.java:2633)
at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:1659)
at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:497)
at oracle.apps.fnd.framework.webui.OAPageBean.preparePage(OAPageBean.java:418)
at OA.jspService(OA.jsp:40)
at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:56)
at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:317)
at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:465)
at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:379)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:727)
at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:306)
at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:767)
at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:259)
at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:106)
at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:803)
at java.lang.Thread.run(Thread.java:534) -
Accesing same object from different servlets
Hello all!
I am developing a web control project. I am using a simulator of a factory (with java). The engineers are supposed to be able to change some variables from the web.
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Thanks! I hope my question is clear =)package com.yourcompany.somepackage;
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hi im just a newbie
i v been always creating an object from the main class..
but how to create an object inside the same class??
i got main and students class
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