I spent full day to make my model observable by this JavaFx databinding.
At this point I already see, that if I change one property like this, it works like charm
selectedTestcase.setFolder("....");
but how I can observe the following and refresh my form:
if (maybeCase.isPresent()) {
selectedTestcase = maybeCase.get();
}
So I change the complete model. How I can make this?
Model:
#XmlRootElement(name = "Testcase")
#XmlAccessorType(XmlAccessType.PROPERTY)
public class Testcase {
private StringProperty Guid;
#XmlElement(name="GUID")
public String getGuid() {
return guidProperty().get();
}
public StringProperty guidProperty() {
if (Guid == null)
Guid = new SimpleStringProperty(this, "Guid");
return Guid;
}
public void setGuid(String guid) {
this.guidProperty().set(guid);
}
private StringProperty caseName;
#XmlElement(name="CaseName")
public String getCaseName() {
return caseNameProperty().get();
}
public StringProperty caseNameProperty() {
if (caseName == null)
caseName = new SimpleStringProperty();
return caseName;
}
public void setCaseName(String caseName) {
this.caseNameProperty().set(caseName);
}
ViewModel:
public Testcase selectedTestcase = new Testcase();
public void setSelectedTestcase(String folder, String filename) {
Optional<Testcase> maybeCase = this.AvailableTestCases.stream()
.filter((t -> t.TestcaseEqualsFolderAndName(folder, filename))).findFirst();
if (maybeCase.isPresent()) {
selectedTestcase = maybeCase.get();
}
}
Thanks in advance :)
Thanks to James_D and the Easybind Library:
MonadicObservableValue
That seems to be the solution:
private ObjectProperty<Testcase> testcaseObjectProperty = new SimpleObjectProperty<>(new Testcase());
public MonadicObservableValue<Testcase> selectedTestcase = EasyBind.monadic(testcaseObjectProperty);
public void setSelectedTestcase(String folder, String filename) {
Optional<Testcase> maybeCase = this.AvailableTestCases.stream()
.filter((t -> t.TestcaseEqualsFolderAndName(folder, filename))).findFirst();
if (maybeCase.isPresent()) {
testcaseObjectProperty.setValue(maybeCase.get());
}
}
and then the final binding:
txtCaseName.textProperty().bind(viewModel.selectedTestcase.flatMap(Testcase::caseNameProperty).orElse(""));
James; you are able to explain me this "orElse"?
Related
In the JavaFx ComboBox which uses a class object list .I want to select items in the ComboBox programmatically using getSelectionModel().select(object or index). i am not getting the desired result Although the value is set but it is something like this main.dao.Company.Company.CompanyTableData#74541e7b.
The code is somewhat like this.
ComboBox<CompanyTableData> company = new ComboBox<>();
company.setItems(GetCompany.getCompanyTableData());//where Observable list is set..
GetCompany.getCompanyTableData() returns observablelist of CompanyTableData class.
The ComboBox Looks as follows.
The CompanyTableData Class is as.
public class CompanyTableData {
private SimpleStringProperty itemCompanyId;
private SimpleStringProperty itemCompanyName;
private SimpleStringProperty createBy;
private SimpleStringProperty createdOn;
public CompanyTableData(CompanyData companyData){
this.itemCompanyId = new SimpleStringProperty(companyData.getItemCompanyId());
this.itemCompanyName = new SimpleStringProperty(companyData.getItemCompanyName());
this.createBy = new SimpleStringProperty(companyData.getCreatedBy());
this.createdOn = new SimpleStringProperty(companyData.getCreatedOn());
}
public String getItemCompanyId() {
return itemCompanyId.get();
}
public SimpleStringProperty itemCompanyIdProperty() {
return itemCompanyId;
}
public void setItemCompanyId(String itemCompanyId) {
this.itemCompanyId.set(itemCompanyId);
}
public String getItemCompanyName() {
return itemCompanyName.get();
}
public SimpleStringProperty itemCompanyNameProperty() {
return itemCompanyName;
}
public void setItemCompanyName(String itemCompanyName) {
this.itemCompanyName.set(itemCompanyName);
}
public String getCreateBy() {
return createBy.get();
}
public SimpleStringProperty createByProperty() {
return createBy;
}
public void setCreateBy(String createBy) {
this.createBy.set(createBy);
}
public String getCreatedOn() {
return createdOn.get();
}
public SimpleStringProperty createdOnProperty() {
return createdOn;
}
public void setCreatedOn(String createdOn) {
this.createdOn.set(createdOn);
}
}
The Cell Factory is set
company.setCellFactory(param -> new CompanyCell());
And the CompanyCell
public class CompanyCell extends ListCell<CompanyTableData> {
#Override
protected void updateItem(CompanyTableData item, boolean empty) {
super.updateItem(item, empty);
if (empty || item == null || item.getItemCompanyName() == null) {
setText(null);
} else {
setText(item.getItemCompanyName());
}
}
}
After all this when i try to set the items programmetically as
company.getSelectionModel().select(getSelectedCompanyIndex());
The getSelectedCompanyIndex() function is as follows.
public static CompanyTableData getSelectedCompanyIndex(){
CompanyTableData c = null,i;
Iterator<CompanyTableData> itr = GetCompany.getCompanyTableData().iterator();
while (itr.hasNext()){
i = itr.next();
if (i.getItemCompanyName().equals(Element.getItemTableData().getCompany())){
c = i;
}
}
return c;
}
And the result i am getting is
And
At the end it should select a name or item in the list but it has set some type of object i think.
Now what should i do. Is there any type of string conversion required.
The buttonCell used to display the item when the combobox popup is not shown is not automatically created using the cellFactory. You need to set this property too to use the same cell implementation:
company.setCellFactory(param -> new CompanyCell());
company.setButtonCell(new CompanyCell());
My Java Class is
public class User {
private List<UserInfo> userInfoList;
public class UserInfo {
private String id;
}
}
Let's assume it has getter, setter method.
json is
{"userInfoList" : [{"id":"a", "id":"b"}]}
I tried to deserialize it like below.
objectMapper.readValue(json, User.class);
But it throws error.
Can not construct instance of User$UserInfoList: no suitable constructor found
How to deserialize it?
I think you should make UserInfo static. Jackson cannot construct the UserInfo class.
I tried with that change and it works for me :
public class User {
private List<UserInfo> userInfoList;
public static class UserInfo {
private String id;
public UserInfo() {
super();
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
}
public List<UserInfo> getUserInfoList() {
return userInfoList;
}
public void setUserInfoList(List<UserInfo> userInfoList) {
this.userInfoList = userInfoList;
}
}
And :
public class App {
public static void main(String[] args) throws IOException {
ObjectMapper mapper = new ObjectMapper();
User.UserInfo ui1 = new User.UserInfo();
ui1.setId("a");
User.UserInfo ui2 = new User.UserInfo();
ui2.setId("b");
List<User.UserInfo> userInfoList = new ArrayList<User.UserInfo>();
userInfoList.add(ui1);
userInfoList.add(ui2);
User user = new User();
user.setUserInfoList(userInfoList);
System.out.println(mapper.writeValueAsString(user));
user = mapper.readValue(mapper.writeValueAsString(user), User.class);
}
}
In a JavaFX TreeView I'm using 'custom' classes which extend TreeItem. This makes me able to edit the items in the TreeView (I can double click them and edit the contents when running the application) but I can't seem to be able to set the .setOnEditCommit() method properly. I was hoping it'd work similar as the function in a tableview but I didn't have any luck yet.
This is my code in my controller in which I try to set the setOnEditCommit() method. In my TreeView called 'trvDivisies' I display football team divisions / competitions and one level lower I display all the teams that are in a certain division.
private void setUpTreeView() {
trvDivisies.setEditable(true);
trvDivisies.setShowRoot(false);
TreeItem<String> root = new TreeItem<>();
for (Divisie d : divisies) {
TreeItem<String> divisieTreeItem = d;
divisieTreeItem.valueProperty().set(d.getNaam());
for (VoetbalTeam vt : d.getVoetbalTeams()) {
TreeItem<String> voetbalTeamTreeItem = vt;
voetbalTeamTreeItem.valueProperty().setValue(vt.getTeamNaam());
divisieTreeItem.getChildren().add(voetbalTeamTreeItem);
}
root.getChildren().add(divisieTreeItem);
}
trvDivisies.setRoot(root);
trvDivisies.getSelectionModel().selectedItemProperty().addListener(new ChangeListener() {
#Override
public void changed(ObservableValue observable, Object oldValue, Object newValue) {
System.out.println(newValue);
}
});
trvDivisies.setCellFactory(TextFieldTreeCell.forTreeView());
// I get an error at the following line when compiling
trvDivisies.setOnEditCommit((TreeView.EditEvent p) -> {
TreeItem<String> selectedItem = p.getTreeItem();
if (selectedItem instanceof Divisie) {
updateDivisie((Divisie)selectedItem);
} else if (selectedItem instanceof VoetbalTeam) {
updateTeam((VoetbalTeam)selectedItem);
}
});
}
This is what my 'custom' classes look like.
public class Divisie extends TreeItem<String> {
private static int idCount = 0;
private int id;
private String naam;
private List<VoetbalTeam> voetbalTeams;
public int getId() {
return id;
}
public String getNaam() {
return naam;
}
public List<VoetbalTeam> getVoetbalTeams() {
return voetbalTeams;
}
public Divisie(int id, String naam) {
super(naam);
this.id = id;
this.naam = naam;
}
public Divisie(String naam) {
this.id = ++idCount;
this.naam = naam;
}
public void addTeam(VoetbalTeam toBeAdded) {
if (voetbalTeams == null) {
voetbalTeams = new LinkedList<>();
}
voetbalTeams.add(toBeAdded);
}
#Override
public String toString() {
return this.naam;
}
}
Second 'lower level' class
public class VoetbalTeam extends TreeItem<String> {
private static int idCount = 0;
private int id;
private String teamNaam;
private List<Speler> spelers;
public int getId() {
return id;
}
public String getTeamNaam() {
return teamNaam;
}
public List<Speler> getSpelers() {
return this.spelers;
}
public VoetbalTeam(int id, String teamNaam) {
super(teamNaam);
this.id = id;
this.teamNaam = teamNaam;
}
public VoetbalTeam(String teamNaam) {
super(teamNaam);
this.id = ++idCount;
this.teamNaam = teamNaam;
}
public void addSpeler(Speler nieuweSpeler) {
if (spelers == null) {
spelers = new LinkedList<>();
}
this.spelers.add(nieuweSpeler);
}
#Override
public String toString() {
return this.teamNaam;
}
}
When trying to run the application WITH the .setOnEditCommit() method I get an error saying:
Error:(97, 37) java: incompatible types: incompatible parameter types in lambda expression
I was hoping you guys can tell me what I need to change my TreeView.EditEvent lambda to or help me find an easier solution.
For a TreeView<T>, the signature of setOnEditCommit is
void setOnEditCommit(EventHandler<TreeView.EditEvent<T>> value)
Since you have (apparently) a TreeView<String>, you need
trvDivisies.setOnEditCommit((TreeView.EditEvent<String> p) -> {
// ...
});
Or, of course, you can just let the compiler do the work for you:
trvDivisies.setOnEditCommit(p -> {
// ...
});
either i am looking at it for to long... or i did not really understand it.
In any case i am trying to fill a tableview that has been created using fxml (inc. Columns) with data.
My Code works for the first (Title) column but not for the rest.
(Yes "data" has all the info in it... checked with debug.)
So can any1 tell me what i am doing wrong??
Here (hopefully all relevant) code (copied together):
#FXML private TableColumn<sresult,String> cl_title;
#FXML private TableColumn<sresult, String> cl_url;
#FXML private TableColumn<sresult, String> cl_poster;
#FXML private TableColumn<sresult, String> cl_date;
#FXML private TableColumn<sresult, String> cl_forum;
String[][] search_res=null;
try {
search_res= search(tf_search.getText());
} catch (MalformedURLException | SolrServerException | ParseException ex) {
Logger.getLogger(MainUiController.class.getName()).log(Level.SEVERE, null, ex);
}
final ObservableList<sresult> data= FXCollections.observableArrayList();
for ( String[] s : search_res){
data.add(new sresult(s[0], s[2],s[3],s[4],s[1]));
}
cl_title.setCellValueFactory(
new PropertyValueFactory<sresult,String>("Title"));
cl_poster.setCellValueFactory(
new PropertyValueFactory<sresult,String>("poster"));
cl_date.setCellValueFactory(
new PropertyValueFactory<sresult,String>("date"));
cl_forum.setCellValueFactory(
new PropertyValueFactory<sresult,String>("forum"));
cl_url.setCellValueFactory(
new PropertyValueFactory<sresult,String>("link"));
tb_results.setItems(data);
public class sresult {
private final SimpleStringProperty Title;
private final SimpleStringProperty poster;
private final SimpleStringProperty date;
private final SimpleStringProperty forum;
private final SimpleStringProperty link;
public sresult(String T, String p, String d, String f, String l) {
this.Title = new SimpleStringProperty(T);
this.poster = new SimpleStringProperty(p);
this.date = new SimpleStringProperty(d);
this.forum = new SimpleStringProperty(f);
this.link = new SimpleStringProperty(l);
}
public String getTitle() {
return Title.get();
}
public void setTitle(String T) {
Title.set(T);
}
public String getposter() {
return poster.get();
}
public void setposter(String p) {
poster.set(p);
}
public String getdate() {
return date.get();
}
public void setdate(String d) {
date.set(d);
}
public String getforum() {
return forum.get();
}
public void setforum(String f) {
forum.set(f);
}
public String getlink() {
return link.get();
}
public void setlink(String l) {
link.set(l);
}
}
Thank you!
Ok,
This was simular enough for me to get the answer.
The getter and setters need to have a Capital letter after get/set.
e.g. public String getTitle() vs public String gettitle()
not really sure why java is forcing this...
Anyway thanks to jewelsea for his answer on the other question.
I want to update a log file(txt) everytime when methods in a an interface class are called?
Is there any way to do this other than writing code in every method to create log?
Here's my 30 mins. you'll have to implement the logging code somewhere so you have to create another abstraction for your code. thus an abstract class is needed. i think. this is very quick and dirty.
public interface IService<T>
{
List<T> GetAll();
bool Add(T obj);
}
then you'll need the abstract class where you'll need to implement your logging routine
public abstract class Service<T> : IService<T>
{
private void log()
{
/// TODO : do log routine here
}
public bool Add(T obj)
{
try
{
log();
return AddWithLogging(obj);
}
finally
{
log();
}
}
public List<T> GetAll()
{
try
{
log();
return GetAllWithLog();
}
finally
{
log();
}
}
protected abstract List<T> GetAllWithLog();
protected abstract bool AddWithLogging(T obj);
}
as for your concrete classes
public class EmployeeService : Service<Employee>
{
protected override List<Employee> GetAllWithLog()
{
return new List<Employee>() { new Employee() { Id = 0, Name = "test" } };
}
protected override bool AddWithLogging(Employee obj)
{
/// TODO : do add logic here
return true;
}
}
public class CompanyService : Service<Company>
{
protected override List<Company> GetAllWithLog()
{
return new List<Company>() { new Company() { Id = 0, Name = "test" } };
}
protected override bool AddWithLogging(Company obj)
{
/// TODO : do add logic here
return true;
}
}
public class Employee
{
public int Id {get;set;}
public string Name { get; set;}
}
public class Company
{
public int Id { get; set; }
public string Name { get; set; }
}
then on your implementation you can just..
static void Main(string[] args)
{
IService<Employee> employee = new EmployeeService();
List<Employee> employees = employee.GetAll();
foreach (var item in employees)
{
Console.WriteLine(item.Name);
}
IService<Company> company = new CompanyService();
List<Company> companies = company.GetAll();
foreach (var item in companies)
{
Console.WriteLine(item.Name);
}
Console.ReadLine();
}
hope this helps!
I think you would have to use Aspect Oriented Programming to achieve that. Read http://www.sharpcrafters.com/aop.net
I think you meant class (instead of interface)
Two options I can think of:
Implementing INotifyPropertyChanged which is in lines of writing code in every method
or
to adopt on of the AOP frameworks in the article http://www.codeproject.com/KB/cs/AOP_Frameworks_Rating.aspx if that is not a major leap