Good day every one, i need a little bit of help here. I was able to connect my database and show those item to a JComboBox, my straggle as of the moment is that every time i change the item on my JComboBox the item that will show on my JTextField is always the first item in my JComboBox even if i click the second or third item show in my JComboBox
public void JComboBoxToJTextFlied()
{
String dataSource = "CheckWriterDB";
String dbURL = "jdbc:odbc:" _ dataSource;
String temp = (String)listOfSuppliers.getSelectedItem();
String sql = (select Suppliers from SuppliersTable where Suppliers=?)
try
{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection connect= DriverManager.getConnection(dbURL, "", "");
PrepareStatement pst = connect.prepareStatement(sql);
pst.setString(1, temp);
resultSet result = pst.executeQuery();
//My Action perform so that everytime i change the item in my JComboBox
the new item will be shown in my JTextField
listOfSuppliersCombo.addItemListener(new ItemListener()
public void itemStateChange(ItemEvent event)
{
If(event.getStateChange() == ItemEvent.SELECTED)
{
try
{
if(result.next())
{
String add = result.getString("Suppliers")
newSuppliersEntryField.setText(add);
}
}
catch()
{
system.out.println("Your error is: " + e)
}
}
}
);
}
catch(Exception e)
{
System.out.println("Your error is: " + e)
}
}
note: listOfSupplierCombo is my JComboBox and newSuppliersEntryField is my JTextField.
How do i improve my codes so that every time i change the item in my JcomboBox it will show the same item in my JTextField? Because everytime i change the ITem in JcomboBox the item that will appear in my JText field is always the first item in my comboBox even if i chose the second, third, fourth and so on in my Jcombobox. Thank you so much.
Try it:
If(event.getStateChange() == ItemEvent.SELECTED)
{
event.getSource();
// It returns the selected item
//you also can check it by:
System.out.println(event.getSource());
}
Related
I'm new with Xamarin forms and don't know how to deal with this case. I've tryed to implement it in several ways but with no success.
I have a page where when user makes an action (write a text on a text box and send it with enter key) my app must make some checkings. Depending on the result of the checks, it could be necessary to show a modal page with a list of item to select. Ones user makes the selection process must continue with other checks. And here is my problem, because in this next checkings I have to show another page. User must make a selection/enter some date, and then continue to complete the proccess, but this page is not appear.
I'm using the messagingCenter to subscribe to the modal pages. First modal page appears and makes the selection well. Second modal page is never shown and then proccess never complets.
Here is some of my code:
NavigationPage navigationPage = new NavigationPage(new ListItemsPage(products));
Navigation.PushModalAsync(navigationPage);
MessagingCenter.Subscribe<ListItemsPage, Guid?>(this, "Select product", (obj, item) =>
{
try
{
if (item != null)
{
product = products.SingleOrDefault(x => x.Guid == item);
if (product != null) ProcessLine(product);
}
}
catch(Exception ex)
{
throw ex;
}
finally
{
MessagingCenter.Unsubscribe<ListItemsPage, Guid?>(this, "Select product");
}
});
On ListItemsPage I have this code whe item is selected:
private void MenuItem_Clicked(object sender, EventArgs e)
{
// some logic...
Navigation.PopModalAsync();
MessagingCenter.Send(this, "Select product", SelectedGuid);
}
SelectedGuid is a Guid type data and when debbugin is well selected.
Problems comes when goes to ProcessLine method.
private void ProcessLine(Product product) {
// make some logic...
NavigationPage navigationPage = new NavigationPage(new ControlUnitsPage(model));
Navigation.PushModalAsync(navigationPage);
MessagingCenter.Subscribe<ControlUnitsPage, ControlUnits>(this, "Select units, date and lot code", (obj, item) =>
{
try
{
if (item != null)
{
_date = item.Date;
_code = item.Code;
_units = item.Units;
Save(productLine, product, _units, _date,_code);
}
}
catch(Exception ex)
{
throw ex;
}
finally
{
MessagingCenter.Unsubscribe<ControlUnitsPage, ControlUnits>(this, "Select units, date and lot code");
}
});
}
ControlUnitsPage has the same structure as the last one page. First makes a PopModalAsync and then sends the message sending an instance of ControlUnits type.
private void Button_Clicked(object sender, EventArgs e)
{
//some logic...
Item = new ControlUnits() { Date = DateField.Date, Code = CodeField.Text, Units = int.Parse(SelectedUnits.Value.ToString()) };
Navigation.PopModalAsync();
MessagingCenter.Send(this, "Select units, date and lot code", Item);
}
I think problem is in the order of invoking method but dont know what is the properly order because I am not able to understand how pushmodal, popmodal methods work, whether or not I should use await with it if after that comes a subscription. I really don't know and I need help, please.
Thank you so much!
your Send and Subscribe calls both need to use matching parameters
if Subscribe looks like this
MessagingCenter.Subscribe<ControlUnitsPage, ControlUnits>(this, "Select units, date and lot code", (obj, item) => ... );
then Send needs to match
MessagingCenter.Send<ControlUnitsPage, ControlUnits>(this, "Select units, date and lot code", Item);
I populate a dropdown with several items. When the user chooses one of these items, a second dropdown gets populated.
When the user clicks on the "x" button on the first dropdown, the two dropdown must be cleared. The first dropdown gets cleared automatically, and i clear the second dropdown by using "dropdown.Items.Clear()".
It happens that when i load again the data for the first dropdown, the second dropdown does not update.
This is the code:
protected void DropDownDiagStati_SelectedIndexChanged(object sender, EventArgs e)
{
int selectedIndex = this.DropDownDiagStati.SelectedIndex;
PopulateDDLStates(selectedIndex);
}
private void PopulateDDLStates(int selectedIndex)
{
// Ottengo i diagrammi di stato in sessione
ArrayList diagrammiStato = Session["stateDiagrams"] as ArrayList;
if(selectedIndex > 0)
{
// Ottengo il diagramma di stato selezionato
DocsPaWR.DiagrammaStato currDiagStato = (DocsPaWR.DiagrammaStato)diagrammiStato[selectedIndex - 1];
// Ottengo gli stati del diagramma di stato selezionato
Stato[] stati = currDiagStato.STATI;
for(int i = 0; i < stati.Length; i++)
{
ListItem item = new ListItem();
item.Value = Convert.ToString(stati[i].SYSTEM_ID);
item.Text = stati[i].DESCRIZIONE;
this.DropDownStati.Items.Add(item);
this.UpPanelStatiDdl.Update();
}
}
else
{
this.DropDownStati.Items.Clear();
this.UpPanelStatiDdl.Update();
}
}
I see only the old value in the second dropdown and i cannot select it.
You need to remove update pane or you can set data source to drop-down.
ddl1.datasource = DataSource;
ddl1.DataTextField = "name";
ddl1.DataValueField = "id";
ddl1.DataBind();
The problem was that the clear function removes also the default empty Item. I solved by creating a private method that removes all the items but the first one.
Ok, I'm starting to lose my mind on this one. I have a tableview where there are 3 combobox table cells. The first is a box where a user can select a job, the job selected changes the next combobox's options (job category). The job category selection changes the options in the labor box. So the flow down is:
job > job category > labor.
I have a very peculiar problem. When editing the table, you can click on any box to get a corresponding list of the available selections based on the other fields. This works fine. Where it blows up is when a selection ISN'T made. To make things more interesting, it only effects the job and job category comboboxes the labor box works flawlessly.
symptom:
-- job category selection disappears when edit is canceled via esc or focus lost
-- selection chosen in the job category field is placed into the job field when editing is canceled via esc or upon loss of focus
Here's the steps to recreate the symptoms:
1) click on job category box and enable editing mode
2) make a new selection from the drop down list
new selection made img
3) click on the job box and enable editing
4) click off the job box and cancel editing by click on job category or labor box in the same row
5) enable job category editing and then cancel job category edit by clicking on either labor / labor boxes or using esc
lose the job category / job selections img
here is the code to initialize the graphic when it comes up:
public void initialize(URL location, ResourceBundle resources) {
/* this is here because the screen handler will load up the Main screen in the
in the hashmap; no connection data will be assigned to the user at that time.
Without this block, when the hashmap attempts to load the Main data this
will cause the screenhandler to error and the main application
to not load correctly. The block below initiatializes the connection to
prevent this from happening.*/
if ( vUsers.getConn() == null){
try {
//establishes a user's connection to the database
vUsers.ConnecrDB();
} catch (SQLException | IOException ex) {
//debugging catch
System.out.println(ex);
}
}
//set the job box list for the user
cmbxJobT.setItems(cmbxPopulator.getJobComboBox());
cmbxJobT.valueProperty().addListener(new ChangeListener<String>(){
#Override
//reads the user's selectino and returns the appropriate labor codes for the Employee
public void changed(ObservableValue o, String oldValue, String newValue){
if (newValue != null){
cmbxJobCatT.getItems().clear();
cmbxJobCatT.getItems().addAll(cmbxPopulator.getJobCatComboBox(newValue));
}else {
cmbxJobCatT.getItems().clear();
cmbxJobCatT.getItems().add(null);
}
}
});
cmbxJobCatT.valueProperty().addListener(new ChangeListener<String>(){
#Override
//reads the user's selectino and returns the appropriate labor codes for the Employee
public void changed(ObservableValue o, String oldValue, String newValue){
if (newValue != null){
cmbxLaborT.getItems().clear();
cmbxLaborT.getItems().addAll(cmbxPopulator.getLaborComboBox(newValue));
}else {
cmbxLaborT.getItems().clear();
cmbxLaborT.getItems().add(null);
}
}
});
tblviewTime.getSelectionModel().selectedItemProperty().addListener((obs, oldSelection, newSel) ->{
if (newSel != null){
Model_Time current = tblviewTime.getSelectionModel().getSelectedItem();
cmbxJobCatT.getItems().clear();
cmbxJobCatT.getItems().addAll(cmbxPopulator.getJobCatComboBox(current.getJob()));
cmbxLaborT.getItems().clear();
cmbxLaborT.getItems().addAll(cmbxPopulator.getLaborComboBox(current.getJobCat()));
}
if (newSel == null){
Model_Time current = tblviewTime.getSelectionModel().getSelectedItem();
cmbxJobCatT.getItems().clear();
cmbxJobCatT.getItems().addAll(cmbxPopulator.getJobCatComboBox(current.getJob()));
cmbxLaborT.getItems().clear();
cmbxLaborT.getItems().addAll(cmbxPopulator.getLaborComboBox(current.getJobCat()));
}
});
addDragListeners(bertaTabPane);
}
here's the code that sets up the tableview:
public void btnTimeSearch(ActionEvent event){
//makes an instance of the toolkit needed to query user time.
Database_RetrievesTime userData = new Database_RetrievesTime();
//grabs data from the userinput fields to set the toolkit
userData.setDateSelect(lblPickDateT.getValue());
userData.setJobBoxSelect(jobTbl.getIdByDesc(cmbxJobT.getValue()));
userData.setLaborBoxSelect(laborTbl.getIdByDesc(cmbxLaborT.getValue()));
userData.setJobCatSelect(jobCatTbl.getIdByDesc(cmbxJobCatT.getValue()));
/*creates cell factories in each column and maps the cell values to the
observable array list's IDs. The section also sets the columns up for user
editing to be available and the methods to execute upon an editted cell
being committed to entry.
**NOTE: The values are retrieved by the model class's getter methods.
Changing a name in the model class requires the user to update the getters.
Naming convention does apply. So for example: a variable
named cscHelp is added, it would need to have a getter called getCscHelp otherwise
the corresponding column will return blanks.*/
//setup ID column
IDcol.setCellValueFactory(new PropertyValueFactory<>("ID"));
//setup Datecol
Datecol.setCellValueFactory(new PropertyValueFactory<>("userDate"));
Datecol.setCellFactory(DatePickerTableCell.forTableColumn());
//created a custom datepicker callback that can be reused throughout the code's interfaces
Datecol.setOnEditCommit((CellEditEvent<Model_Time,LocalDate> t) -> {
//generate a temporary variable to convert the LocalDate returned into a SimpleObjectProperty
ObjectProperty<LocalDate> temp = new SimpleObjectProperty(t.getNewValue());
//store the new value to the object's model
t.getRowValue().setUserDate(temp);
//store row's object to the change list
Helper_TimShArrGen.addToEditedMatrix(t.getRowValue());
//signaling to the program that a change had been made
isChanged = true;
});
//job column setup
Jobcol.setCellValueFactory(new PropertyValueFactory<>("Job"));
Jobcol.setCellFactory(ComboBoxTableCell.forTableColumn(cmbxPopulator.getJobComboBox()));
/*creates a combobox filled with the populated items found at initialization of the screen
user inputs are automatically commited
*/
Jobcol.setOnEditCommit((CellEditEvent<Model_Time,String> t) -> {
SimpleStringProperty ssp = new SimpleStringProperty(t.getNewValue());
//store selection to the object's model (unprocessed so values will show something like '6002: Kobota'
t.getRowValue().setJob(ssp);
//store row's object to the change list
Helper_TimShArrGen.addToEditedMatrix(t.getRowValue());
cmbxJobCatT.getItems().clear();
cmbxJobCatT.getItems().addAll(cmbxPopulator.getJobCatComboBox(t.getRowValue().getJob()));
//signaling a change has been made
isChanged = true;
});
jobCatCol.setCellValueFactory(new PropertyValueFactory<>("JobCat"));
jobCatCol.setCellFactory(ComboBoxTableCell.forTableColumn(cmbxPopulator.getJobCatComboBox(cmbxJobT.getValue())));
jobCatCol.setOnEditCommit((CellEditEvent<Model_Time,String> t)->{
SimpleStringProperty ssp = new SimpleStringProperty(t.getNewValue());
//store selection to the object's model (unprocessed so values will show something like '6002: Kobota'
t.getRowValue().setJob(ssp);
//store row's object to the change list
Helper_TimShArrGen.addToEditedMatrix(t.getRowValue());
cmbxLaborT.getItems().clear();
cmbxLaborT.getItems().addAll(cmbxPopulator.getLaborComboBox(t.getRowValue().getJob()));
//signaling a change has been made
isChanged = true;
});
//labor column setup works just like the job column
Laborcol.setCellValueFactory(new PropertyValueFactory<>("Labor"));
Laborcol.setCellFactory(ComboBoxTableCell.forTableColumn(cmbxPopulator.getLaborComboBox(cmbxJobCatT.getValue())));
Laborcol.setOnEditCommit((CellEditEvent<Model_Time,String> t) -> {
SimpleStringProperty ssp = new SimpleStringProperty(t.getNewValue());
t.getRowValue().setLabor(ssp);
Helper_TimShArrGen.addToEditedMatrix(t.getRowValue());
t.getTableView().getItems().get(t.getTablePosition().getRow()).setLabor(ssp);
isChanged = true;
});
//time column setup.
Timecol.setCellValueFactory(new PropertyValueFactory<>("Time"));
Timecol.setCellFactory(TextFieldTableCell.<Model_Time, Float>forTableColumn(new FloatStringConverter()));
Timecol.setOnEditCommit((CellEditEvent<Model_Time,Float> t) -> {
//temp variable initialiation
float token = t.getNewValue();
//generate a temporary variable to convert the float return to a SimpleFloatProperty
SimpleFloatProperty temp = new SimpleFloatProperty(token);
//now update the row's object
t.getRowValue().setTime(temp);
//store row's object to the change list
Helper_TimShArrGen.addToEditedMatrix(t.getRowValue());
isChanged = true;
});
//set tableView editable
tblviewTime.setEditable(true);
//sets tableView to allow multiline selection
TableViewSelectionModel<Model_Time> tvt = tblviewTime.getSelectionModel();
tvt.setSelectionMode(SelectionMode.MULTIPLE);
/* checks if edits have been made. If there are edits, it commits to the
database before wiping the arraylists and updating the table*/
if (isChanged == true){
/*makes sure there are no duplicate entries in the arraylist. Throws out
previous edits and takes the most recent*/
Helper_TimShArrGen.validateMatrixEntries();
//commits changes and resets the "isChanged" value.
isChanged = Helper_TimShArrGen.confirmChanges(vUsers, jobTbl, jobCatTbl, laborTbl, isChanged);
}
/*tells the kit to run the querytime Method which uses the user input data
and user data to search the timesheet tables and returns the user's time.*/
if (isChanged == false){
try {
rs = userData.queryTime(vUsers.getConn(), vUsers.getLogin_ID());
} catch (SQLException ex) {
System.out.println(ex);
}
} else {
return;
}
//sets up the observablelist for the tableview
renderTable.setTableView(tblviewTime);
ObservableList n = renderTable.generateTable(jobTbl, jobCatTbl, laborTbl, rs, vUsers.getConn());
//renders the data on the screen`
tblviewTime.setItems(n);
Helper_TimeBreakDown breakdown = new Helper_TimeBreakDown();
breakdown.setTblArr(n);
breakdown.BreakDwnTim();
lblMonTim.setText(String.valueOf(breakdown.getMon()));
lblTuesTim.setText(String.valueOf(breakdown.getTues()));
lblWedsTim.setText(String.valueOf(breakdown.getWeds()));
lblThursTim.setText(String.valueOf(breakdown.getThurs()));
lblFriTim.setText(String.valueOf(breakdown.getFri()));
lblSatTim.setText(String.valueOf(breakdown.getSat()));
lblSunTim.setText(String.valueOf(breakdown.getSun()));
lblWkTim.setText(String.valueOf(breakdown.getWeek()));
}
this is the segment from the class that handles the data that goes into the lists.
public ObservableList<String> getJobComboBox(){
//clear the jobList to clean out junk data between calls
jobList.clear();
//looks at the job table to determine if the job is active. If active, it reads the entry
for (count=0; count<= jobTbl.getTblArray().size()-1; count++){
if(jobTbl.getTblArray().get(count).isActive()){
/*here we scroll through the JobIDList and match the IDs to the jobtbl
data. When a match is hit, we grab up the number on the job and the description
this is added to another array that will become the combobox's list
*/
for(inCount = 0; inCount <= jobIDList.size()-1; inCount++){
if(jobIDList.get(inCount).getCol2ID() == jobTbl.getTblArray().get(count).getID()){
jobList.add(jobTbl.getNumById(jobIDList.get(inCount).getCol2ID())
+ ": " + jobTbl.getDescById(jobIDList.get(inCount).getCol2ID()));
}
}
}
}
/* there's probably a better dataset to use that won't allow duplicates
due to my lack of knowledge at this time, I elected to create a hashset, pass the arrayList
to the hashset to wipe out duplicates, and then pass it back to the arrayList to be used in the combobox
*/
Set<String> tmp = new HashSet();
tmp.addAll(jobList);
jobList.clear();
jobList.addAll(tmp);
jobList.add(null);
return jobList;
}
/**
*
* #param job Argument for the selected Job String
* #return returns the ObservableList of strings for the Job Category ComboBox
*/
public ObservableList<String> getJobCatComboBox(String job){
//clearing out old artifact data from the previous selection
jobCatList.clear();
//splitting the user's string selection apart (number as string, description as string)
int jID=0;
if (job != null){
if (job.contains(": ")){
String[] tmp = job.split(": ");
job = tmp[1];
}
}
// here we comb the job Table for a matching description and vacuum up the associated ID number
for(count=0; count<=jobTbl.getTblArray().size()-1; count++){
if(jobTbl.getTblArray().get(count).getDesc().equals(job)){
jID = jobTbl.getTblArray().get(count).getID();
}
}
/*using that jobID number to examine the fKey in the category table.
once we match the JobID to the fKey ID in the jobCat table, we scoop up the
the job Category code and description to create a list for the combobox
*/
for (count=0; count<= jobCTbl.getTblArray().size()-1; count++){
for(inCount = 0; inCount <= jobCatIDList.size()-1; inCount++){
if(jobCatIDList.get(inCount).getID() == jobCTbl.getTblArray().get(count).getID()){
if(jobCTbl.getTblArray().get(count).getfKeyId() == jID){
jobCatList.add(jobCTbl.getNumById(jobCatIDList.get(inCount).getID())
+ ": " + jobCTbl.getDescById(jobCatIDList.get(inCount).getID()));
}
}
}
}
//same house keeping to remove duplicates as described above
Set<String> tmp = new HashSet();
tmp.addAll(jobCatList);
jobCatList.clear();
jobCatList.addAll(tmp);
jobCatList.add(null);
return jobCatList;
}
/**
*
* #param jobCat Argument for the selected Job Category String
* #return ObservableList of strings for the Labor ComboBox
*/
public ObservableList<String> getLaborComboBox(String jobCat){
//temp arrays I needed to decode the affiliated connections
ArrayList<Integer> jCID = new ArrayList();
ArrayList<Integer> laborID = new ArrayList();
//house keeping to remove artifact data from previous selections
if(jCID != null){
jCID.clear();
}
if(laborID != null){
laborID.clear();
}
if(laborList !=null){
laborList.clear();
}
//split user's string selection for the job category (numerical code as sting, description as string)
if(jobCat != null){
if (jobCat.contains(": ")){
String[] tmp = jobCat.split(": ");
jobCat = tmp[1];
}
}
//use the description to find the affiliated job category ID
for(count=0; count<=jobCTbl.getTblArray().size()-1; count++){
if(jobCTbl.getTblArray().get(count).getDesc().equals(jobCat)){
jCID.add(jobCTbl.getTblArray().get(count).getID());
}
}
//use the job category ID to find the associated labor IDs from the associate entity table
for(count=0; count<=jCLTbl.getTblArray().size()-1; count++){
for(inCount=0; inCount<=jCID.size()-1; inCount++){
if(jCLTbl.getTblArray().get(count).getCol1ID() == jCID.get(inCount)){
laborID.add(jCLTbl.getTblArray().get(count).getCol2ID());
}
}
}
//use the labor ID to look up the needed data from the labor table.
for (count=0; count<= laborTbl.getTblArray().size()-1; count++){
for(inCount = 0; inCount <= laborID.size()-1; inCount++){
if(laborID.get(inCount) == laborTbl.getTblArray().get(count).getID()){
laborList.add(laborTbl.getNumById(laborID.get(inCount))
+ ": " + laborTbl.getDescById(laborID.get(inCount)));
}
}
}
//more housekeeping to remove duplicate entries.
Set<String> tmp = new HashSet();
tmp.addAll(laborList);
laborList.clear();
laborList.addAll(tmp);
laborList.add(null);
return laborList;
}
I know there are probably better ways to do things here. I'm still new to JAVA and coding. I work at a small company so I'm the only coder they employee. Unfortunately this limits me to what I can teach myself, so there are probably some more efficient ways to accomplish the same mission here. Anyway, if anyone could help me figure out what is going on, it would be appreciated.
The answer to this problem is actually found in the SetOnEdit portion of the jobcatCol.
upon closer inspection and a lot of debugging, I found that this line
t.getRowValue().setJob(ssp);
is actually supposed to be
t.getRowValue().setJobCat(ssp);
I also chose to forego the ComboBoxTableCell API and write my own combobox implementations for each cell. It's a very basic version found here:
public class JobComboBoxCell extends TableCell<Model_Time, String>
{
private ComboBox<String> comboBox;
private Helper_UserSpecificTimDat cmbxPopulator = new Helper_UserSpecificTimDat();
public JobComboBoxCell(Helper_UserSpecificTimDat cmbxPopulator)
{
comboBox = new ComboBox<>();
this.cmbxPopulator = cmbxPopulator;
}
#Override
public void startEdit()
{
if ( !isEmpty() )
{
super.startEdit();
comboBox.setItems( cmbxPopulator.getJobComboBox() );
comboBox.getSelectionModel().select( this.getItem() );
comboBox.focusedProperty().addListener( new ChangeListener<Boolean>()
{
#Override
public void changed( ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue )
{
if ( !newValue )
{
commitEdit( comboBox.getSelectionModel().getSelectedItem() );
}
}
} );
setText( null );
setGraphic( comboBox );
}
}
#Override
public void cancelEdit()
{
super.cancelEdit();
setText( ( String ) this.getItem() );
setGraphic( null );
}
#Override
public void updateItem( String item, boolean empty )
{
super.updateItem( item, empty );
if ( empty )
{
setText( null );
setGraphic( null );
}
else
{
if ( isEditing() )
{
setText( null );
setGraphic( comboBox );
}
else
{
setText( this.getItem() );
setGraphic( null );
}
}
}
}
This code was courtesy of Uluk Biy's response in thread:Populate combo box list dynamically for each row in javaFx table view
I adapted his code a little bit to specifically fit my needs. This solved a problem with values disappearing from the job category field and from data transferring from the job category field to the Job field.
This was one of the harder pieces of code I've had to troubleshoot. It was a combination of how the ComboBoxTableCell operates, the dynamic data of my comboboxes, and a slip in the which setter I was calling. It was about a perfect storm of flubs that the program saw no exceptions for as a result.
Thank you for the help
I am Using Vaadin in my application to display the REPORTS on PAGED TABLE from date to to date.
The code is working fine, when I click the submit button the data is not showing any where on vaadin ui table but, when I click the header row of that table then the data is showing.I need when the user entered from date to to date then after clicking the submit button the I need to display the reports on table instead of clicking the header row.Here I am top display the reports on the table I am using PAGED TABLE instead of normal Table.
I am using this Code for all reports due to this all reports are behaving likesame.
Pls help me here is the code is
Button executeReportButton = new Button("Submit");
executeReportButton.addListener(new Button.ClickListener() {
#Override
public void buttonClick(ClickEvent event) {
if ((Date) tatFromDate.getValue() != null
&& (Date) tatToDate.getValue() != null) {
runDBReport(reportTable, (Date) tatFromDate.getValue(),
(Date) tatToDate.getValue());
} else
showWarningNotification("Error loading check list report.",
"Date entered is not valid.");
}
});
private void runDBReport(PagedTable reportTable, Date fromDate, Date toDate) {
final PagedTable _reportTable = reportTable;
final Date _fromDate = fromDate;
final Date _toDate = toDate;
HibernateUtils.getCurrentSession().doWork(new Work() {
#Override
public void execute(Connection connection) throws SQLException {
String reportCall = "{ call RP_PROC_CHECKLIST_AUDIT(?, ?, ?) }";
CallableStatement stmt = null;
ResultSet rs = null;
try {
stmt = connection.prepareCall(reportCall);
// register the type of the out param - an Oracle specific
// type
stmt.registerOutParameter(3, OracleTypesHelper.INSTANCE
.getOracleCursorTypeSqlType());
// set the in param
stmt.setDate(1, new java.sql.Date(_fromDate.getTime()));
stmt.setDate(2, new java.sql.Date(_toDate.getTime()));
// execute and retrieve the result set
stmt.execute();
rs = (ResultSet) stmt.getObject(3);
// get the results
while (rs.next()) {
Object TATDataRowId = _reportTable.addItem();
_reportTable.getItem(TATDataRowId)
.getItemProperty("checklistid")
.setValue(rs.getString(1));
_reportTable.getItem(TATDataRowId)
.getItemProperty("checklistdescription")
.setValue(rs.getString(2));
// ... a trillion more
}
} catch (Exception e) {
logger.error(
"Error loading check list report. Exception: {}",
e.getMessage());
logger.debug("Error loading check list report.", e);
showWarningNotification(
"Error loading check list report. Please contact admin",
"Error message is : " + e.getMessage());
} finally {
rs.close();
stmt.close();
}
}
});
}
I think that your HibernateUtils.getCurrentSession().doWork(new Work().... is starting a background thread and, when the report is finished fills in the table.
For background threads updating the UI in vaadin, there a special rules on how to do it.
When you don't follow them, then the serverside changes are only visible on the next client->server interaction.
https://vaadin.com/book/vaadin7/-/page/advanced.push.html#advanced.push.running
Don't forget to also look at server push/polling, since the webbrowser must be notified for the new content
I have TableView with number of columns, I have set onEditCommit method on the first column to get the value inserted and then retrieve data from database based on that value and set the retrieved data in other columns. the table couldn't update it's content.
accountNoCol.setOnEditCommit(new EventHandler<CellEditEvent<Bond, String>>() {
#Override
public void handle(CellEditEvent<Bond, String> event) {
String newValue = event.getNewValue();
Bond bond = event.getRowValue();
int selectedRow = event.getTablePosition().getRow();
if (isInteger(newValue)) {
((Bond) event.getTableView().getItems().get(
event.getTablePosition().getRow())).setAccountNo(newValue);
if (isDebtAccount(newValue)) {
String accountName = getDebtAccountName(newValue);
String coinName = getCoinName(newValue);
float coinExchange = getCoinExchange(newValue);
bond.setAccountName(accountName);
bond.setCoinName(coinName);
bond.setCoinExchange(coinExchange);
bondTable.getSelectionModel().select(selectedRow, statementCol);
} else if (isNonDebtAccount(newValue)) {
String accountName = getNonDebtAccountName(newValue);
bond.setAccountName(accountName);
bond.setCoinName(getDefaultCoinName());
bond.setCoinExchange(1);
bondTable.getSelectionModel().select(selectedRow, statementCol);
}
else {
System.out.println("wrong acount name");
// show accounts table - i guess
}
} else {
if (newValue.length() == 0) {
System.out.println("length : " + newValue.length());
((Bond) event.getTableView().getItems().get(
event.getTablePosition().getRow())).setAccountNo(newValue);
}
}
}
});
I tried to use this next line but the table get crashed after adding new rows
bondData.set(selectedRow,Bond);
Solved. The problem was the table get crashed when am trying to open new stage from a listener on a tablecolumn. so on listener and before fire my action which is opening new stage i set the tablecolumn uneditable.