I have the below code in Jdeveloper 11g:
File Name: Test.java
package com.sample;
public class Test {
public static void main(String[] args) {
SomeInterface interfaceRef = new SomeClass();
interfaceRef.someMethod();
}
}
class SomeClass implements SomeInterface {
public void someMethod() {
System.out.println("I am the implementation...");
}
}
interface SomeInterface {
public void someMethod();
}
When I press CTRL key and click on the someMethod() call ( i.e in the line interfaceRef.someMethod() in main() method). The cursor is taken to the interface's method declaration. I want to be able to directly go to the actual implementation method of SomeClass.
This is possible in Eclipse. When I press ctrl key and Hover over a method called on an interface, it shows me two options.
Open Declaration
Open Implementation.
If I click on Open Implementation, it goes to the implemented method in the someClass.
There is a way for this in jdeveloper using section 11.2.7 of the following link but this involves multiple hops.
Can it be done in a single shortcut in Jdev?
Related
In my Plugin there is an action to open an Editor (extends EditorPart). When I try to open it a second time, its init method isn't called. Instead the focus is shifted to the editor that is already open.
The Editor is associated with a filetype. Here is the excerpt from the plugin.xml:
<extension point="org.eclipse.ui.editors">
<editor
class="de.blub.tool.ide.editors.GRASPEditor"
default="true"
extensions="grasp"
filenames="*.grasp"
icon="icons/newGraspFile.png"
id="de.blub.tool.ide.editors.GRASPEditor"
name="GRASP File Editor">
</editor>
</extension>
I have an Action to open a new Editor. When I try to click that Action twice it reuses the first Editor. I also tried to use an EditorMatcher that implements IEditorMatchingStrategy and always returns false in its matches() method. Even that doesn't change the behavior.
This seems to be a desired/default behavior in eclipse. How can I change that so that the user can initialize a new Editor each time?
Eclipse looks for the equals method of the IEditorInput instance. The Editor somewhere in its code (in my case in the doSave method) uses a setInput method like this:
#Override
public void init(IEditorSite site, IEditorInput input) throws PartInitException {
// Initialize the editor input
this.input = new MyInputClass(resource);
...
}
#Override
public void doSave(IProgressMonitor monitor) {
...
setInput(input);
}
MyInputClass is the class that extends IEditorInput. The logic for eclipse to reuse an Editor or create a new one is in its equals method. The following example checks the path of an IResource field:
public class MyInputClass implements IEditorInput {
private IResource resource;
public MyInputClass(IResource resource) {
this.resource = resource;
}
public IResource getResource() {
return resource;
}
public void setResource(IResource resource) {
this.resource = resource;
}
#Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj instanceof MyEditorClass) {
MyEditorClass other = (MyEditorClass) obj;
if (getResource().getFullPath().equals(other.getResource().getFullPath())) {
return true;
}
}
return false;
}
}
Of course one can define another logic inside the equals method. Make sure to not create a chaos, which is very well possible, as greg-449 pointed out in a comment.
I'm new to OSGI framework and I'm trying to access the 'Derived' Class variable 'publicVariable' from another class 'Derived2' like "Derived.publicVariable" but publicVariable is always shows null. I really appreciate if someone can help me out with this.
Thanks
Manifest file - Derived2
Require-Bundle:com.xxxxxx.Derived1
Java code
abstract class Base {
protected Vector <String> supportedCommands = new Vector <String> ();
protected abstract void initialiseCommands();
}
class Derived extends Base {
private static Derived derivedPlugin = null;
public Derived()
{
derivedPlugin = this;
}
public static Derived getPlugin()
{
return derivedPlugin;
}
public String publicVariable = null;
protected void initialiseCommands()
{
publicVariable = "someData";
System.out.println("Derived" + publicVariable);
}
}
class Derived2 extends Base {
protected void initialiseCommands()
{
supportedCommands.add(Derived.getPlugin().publicVariable);
System.out.println("IMRSAUtilitiesPlugin" +supportedCommands);
}
Also referred below link, which is a similar issue but i'm not using any static variable, it is just a public variable.
how use Singleton object in different class loader....?
The code in the question will not compile. You are trying to access an instance field (publicVariable in class Derived) in a static way, i.e. Derived.publicVariable.
OSGi does not change the semantics of the Java language, and if you cannot even compile your code then OSGi will certainly not be able to run it.
I have created a class in which I am creating all the methods I require for my test automation. Issue which I am facing is that when I run main class, it works fine. But when I call that class in other class it opens 2 browser windows. The test is performed on 1 and other remains ideal. Also when I use close() or quit() method for #After, it closes the ideal window not the one which I am working on.
Below is my code snippet for ref.
Main class
public class ProjectManagement{
WebDriver driver = new FirefoxDriver();
public void navigateCreate(String uid, String pass) throws Throwable {
driver.manage().window().maximize();
driver.get(baseurl);
driver.findElement(By.id("Email")).sendKeys(uid);
driver.findElement(By.id("Password")).sendKeys(pass);
driver.findElement(By.id("loginBtn")).click();
driver.findElement(By.linkText("Projects")).click();
driver.findElement(By.linkText("Create New Project")).click();
}
}
Test Class
public class NewTest extends ProjectManagement{
ProjectManagement project1 = new ProjectManagement();
#Test
public void createPro() throws Throwable {
project1.navigateCreate(UId,Password);
}
#AfterTest
public void afterTest() {
driver.quit();
}
}
If you are extending ProjectManagement, you don't need to instantiate it on the sub-class. By doing so, you're effectively creating two instances of the class and, as such, two instances of WebDriver (which in turn generates two browser windows).
So, remove the following:
ProjectManagement project1 = new ProjectManagement();
And change your createPro() method to:
#Test
public void createPro() throws Throwable {
navigateCreate(UId,Password);
}
How does a WCF channel (created via ChannelFactory) implement ICommunicationObject, but doesn't expose the Close() method, for example, unless you cast the proxy to ICommunicationObject? Does that make sense?
I got to thinking about that on the way home today and couldn't figure it out in my head. Maybe I'm asking the wrong question? Maybe I'm asking a stupid question? :)
Is it some kind of ninja trick?
This is done via Explicit Interface Implementation.
Suppose you have an interface, like so:
public interface IFoo
{
void Foo();
}
You can implement this normally:
public class Bar : IFoo
{
public void Foo() {} // Implicit interface implementation
}
Alternatively, you can implement the interface members explicitly, which requires the cast:
public class Baz : IFoo
{
void IFoo.Foo() {} // This will require casting the object to IFoo to call
}
This can be very useful at times. For example, it is often done to implement IDisposable in classes where the preferred API would be to call .Close(), for example. By implementing IDisposable explicitly, you "hide" the Dispose() method, but still allow the class instance to be used via a using statement.
The Channel class implements the ICommunicationObject interface explicitly. Here's an example demonstrating the difference between explicit interface implementation and implicit interface implementation:
internal interface IExample
{
void DoSomething();
}
class ImplicitExample : IExample
{
public void DoSomething()
{
// ...
}
}
class ExplicitExample : IExample
{
void IExample.DoSomething()
{
// ...
}
}
class Consumer
{
void Demo()
{
var explicitExample = new ExplicitExample();
// explicitExample.DoSomething(); <-- won't compile
((IExample)explicitExample).DoSomething(); // <-- compiles
var implicitExample = new ImplicitExample();
implicitExample.DoSomething(); // <-- compiles
}
}
Here is a link to the an MSDN article on this subject: http://msdn.microsoft.com/en-us/library/ms173157.aspx
I am using the Subclipse API and I would like to implement the ISVNNotifyListener so that I can find out about the subclipse events as they happen during runtime. I believe I need to add (subscribe) my instance of the notify listener to the set of listeners that the Client Adapter will notify, but I am at a loss for how to get access to the Client Adapter that is being used by Subclipse at runtime. Is there a way to access it so that I can add my listener to the set?
Sorry, but unfortunately Subclipse has not been coded in such a way to provide access to the internals. Subclipse constructs a new ISVNClientAdapter object for each API call it needs to make into Subversion and it adds its ISVNNotifyListener to this object on the fly as needed. So there is no way for you to interject your own listener.
Perhaps you could write a class that implements IConsoleListener and have it act as a proxy for the Subclipse class. You could then call SVNProviderPlugin.getConsoleListener to get the current console listener and store a reference to it in your class. Then call SVNProviderPlugin.setConsoleListener to replace the class held in Subclipse with your class. As the events are fired in your class, you could just forward them on to the Subclipse class and do whatever you want with the events in your code. Something like this:
import java.io.File;
import org.tigris.subversion.subclipse.core.client.IConsoleListener;
import org.tigris.subversion.svnclientadapter.SVNNodeKind;
public class ProxyListener implements IConsoleListener {
private IConsoleListener subclipseListener;
public ProxyListener(IConsoleListener subclipseListener) {
super();
this.subclipseListener = subclipseListener;
}
public void setCommand(int command) {
subclipseListener.setCommand(command);
// TODO add your code
}
public void logCommandLine(String commandLine) {
subclipseListener.logCommandLine(commandLine);
// TODO add your code
}
public void logMessage(String message) {
subclipseListener.logMessage(message);
// TODO add your code
}
public void logError(String message) {
subclipseListener.logError(message);
// TODO add your code
}
public void logRevision(long revision, String path) {
subclipseListener.logRevision(revision , path);
// TODO add your code
}
public void logCompleted(String message) {
subclipseListener.logCompleted(message);
// TODO add your code
}
public void onNotify(File path, SVNNodeKind kind) {
subclipseListener.onNotify(path, kind);
// TODO add your code
}
}