Eclipse Community Forums: Remote Application Platform (RAP)

Help

Home

Home » Eclipse Projects » Remote Application Platform (RAP) » Browser widget problem

Show: Today's Messages :: Show Polls :: Message Navigator

Browser widget problem [message #1032312]

Tue, 02 April 2013 21:17

Dmitry Dukhov

Messages: 192
Registered: February 2013

Senior Member

Hello
I have permanently problem with browser widget after operation setText.
I create one copy widget and after refresh only.
Dmitry

java.io.FileNotFoundException: .......\rwt-resources\org.eclipse.swt.browser\text612072251.html (The requested operation cannot be performed on a file with a user-mapped section open)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(Unknown Source)
at java.io.FileOutputStream.<init>(Unknown Source)

Report message to a moderator

Re: Browser widget problem [message #1032619 is a reply to message #1032312]

Wed, 03 April 2013 08:04

Tim Buschtoens

Messages: 396
Registered: July 2009

Senior Member

Hi.

Can you provide an example EntryPoint to reproduce the issue?

Greetings,
Tim

--
Tim Buschtöns

Twitter: @EclipseRAP
Blog: http://eclipsesource.com/blogs/

Professional services for RAP and RCP?
http://eclipsesource.com/services/rap/

Report message to a moderator

Re: Browser widget problem [message #1035315 is a reply to message #1032619]

Sat, 06 April 2013 17:43

Dmitry Dukhov

Messages: 192
Registered: February 2013

Senior Member

Composite grpBrowser = new Composite(grpMain, SWT.BORDER);
GridData data = new GridData(GridData.FILL_HORIZONTAL | GridData.FILL_VERTICAL);
data.heightHint = 250;
grpBrowser.setLayoutData(data);

browser = new Browser(grpBrowser, SWT.BORDER);
browser.setText("Emty");

and when I select item from my table I use

String html = rs.getTObject(0).get("BIGREPORT");
browser.setText(html);

swt application with same code is working correctly

Report message to a moderator

Re: Browser widget problem [message #1035327 is a reply to message #1035315]

Sat, 06 April 2013 18:03

Dmitry Dukhov

Messages: 192
Registered: February 2013

Senior Member

And
How can I clear rwt-resources\org.eclipse.swt.browser\?

Report message to a moderator

Re: Browser widget problem [message #1036487 is a reply to message #1035315]

Mon, 08 April 2013 12:46

Tim Buschtoens

Messages: 396
Registered: July 2009

Senior Member

> and when I select item from my table I use
> String html = rs.getTObject(0).get("BIGREPORT");
> browser.setText(html);
>

So what value is "html"?

--
Tim Buschtöns

Twitter: @EclipseRAP
Blog: http://eclipsesource.com/blogs/

Professional services for RAP and RCP?
http://eclipsesource.com/services/rap/

Report message to a moderator

Re: Browser widget problem [message #1036828 is a reply to message #1036487]

Mon, 08 April 2013 21:49

Dmitry Dukhov

Messages: 192
Registered: February 2013

Senior Member

html is just html-report from db.

On 08.04.2013 16:46, Tim Buschtöns wrote:
>
>> and when I select item from my table I use
>> String html = rs.getTObject(0).get("BIGREPORT");
>> browser.setText(html);
>>
>
> So what value is "html"?
>

Report message to a moderator

Re: Browser widget problem [message #1037163 is a reply to message #1036828]

Tue, 09 April 2013 08:28

Ralf Sternberg

Messages: 1313
Registered: July 2009

Senior Member

Dmitry,

the snippet below works for me. Maybe the problem is only reproducible
on a Windows filesystem? If you can reproduce the problem with a snippet
like this, then please open a bug.

Regards, Ralf

public class BrowserSnippet extends AbstractEntryPoint {

@Override
public void createContents( Composite parent ) {
parent.setLayout( new GridLayout() );
final Browser browser = new Browser( parent, SWT.BORDER );
browser.setText( "Empty" );
browser.setLayoutData( new GridData( SWT.FILL, SWT.FILL, true, true
) );
Button button = new Button( parent, SWT.PUSH );
button.setText( "change content" );
button.addListener( SWT.Selection, new Listener() {
@Override
public void handleEvent( Event event ) {
browser.setText( "Some other text " + UUID.randomUUID() );
}
} );
}

}

--
Ralf Sternberg

Twitter: @EclipseRAP
Blog: http://eclipsesource.com/blogs/

Professional services for RAP and RCP?
http://eclipsesource.com/services/rap/

Report message to a moderator

Re: Browser widget problem [message #1037175 is a reply to message #1036828]

Tue, 09 April 2013 08:40

Tim Buschtoens

Messages: 396
Registered: July 2009

Senior Member

Sorry, but this is not enough information to reproduce the issue. I need
a complete EntryPoint, or better yet a complete Project that I can run
and reproduce the issue with. I used the few lines you gave me to create
an entry point (see below), but as expected this very simple application
behaves exactly that way it should. If the app crashes when you set the
"html" String, it is important to know exactly what state the
application is in at that moment and what the value of "html" is. I also
need to know which RAP version and which browser you are using.

public class BrowserCrash extends AbstractEntryPoint {

@Override
protected void createContents( Composite parent ) {
Composite grpBrowser = new Composite(parent, SWT.BORDER);
GridData data = new GridData(GridData.FILL_HORIZONTAL |
GridData.FILL_VERTICAL);
data.heightHint = 250;
grpBrowser.setLayoutData(data);
grpBrowser.setLayout( new FillLayout() );

Browser browser = new Browser(grpBrowser, SWT.BORDER);
browser.setText("Emty");
browser.setText( "A report??" );
}

}

Am 08.04.2013 23:49, schrieb Dmitry:
> html is just html-report from db.
>
> On 08.04.2013 16:46, Tim Buschtöns wrote:
>>
>>> and when I select item from my table I use
>>> String html = rs.getTObject(0).get("BIGREPORT");
>>> browser.setText(html);
>>>
>>
>> So what value is "html"?
>>
>

--
Tim Buschtöns

Twitter: @EclipseRAP
Blog: http://eclipsesource.com/blogs/

Professional services for RAP and RCP?
http://eclipsesource.com/services/rap/

Report message to a moderator

Re: Browser widget problem [message #1041982 is a reply to message #1037175]

Mon, 15 April 2013 21:14

Dmitry Dukhov

Messages: 192
Registered: February 2013

Senior Member

This is simple code with browser's problem.

First code works correctly.

run new ViewAlerts().show(parentGrp) again and upssss "The requested operation cannot be performed on a file with a user-mapped section open"

public class ViewAlerts {


	public ViewAlerts() {
	}

	protected Composite viewHistory(final Composite parentTab) {

	    Composite grpBrowser = new Composite(parentTab, SWT.BORDER);
	    GridData data = new GridData(GridData.FILL_HORIZONTAL | GridData.FILL_VERTICAL);
	    data.heightHint = 250;
	    grpBrowser.setLayoutData(data);
	    grpBrowser.setLayout( new FillLayout() );

	    Browser browser = new Browser(grpBrowser, SWT.BORDER);
	    browser.setText("Emty");
	    browser.setText( "A report??" ); 
	    return grpBrowser;
	}

	public void show(Composite parent) {
		TabFolder tabFolder = new TabFolder(parent, SWT.NONE);

		TabItem tabHistory = new TabItem(tabFolder, SWT.NONE);
		tabHistory.setText("History of alerts");
		tabHistory.setControl(viewHistory(tabFolder));
	}

}

Report message to a moderator

Re: Browser widget problem [message #1042287 is a reply to message #1041982]

Tue, 16 April 2013 08:16

Ivan Furnadjiev

Messages: 2426
Registered: July 2009
Location: Sofia, Bulgaria

Senior Member

Hi Dmitry,
the posted code works for me with RAP from master (2.1M1). Which RAP
version are you using? What is your OS, JDK (x64?)? Does it happen when
you start the application from IDE (Jetty) or you are deploying it to an
external servlet container as Tomcat?
Best,
Ivan

On 4/16/2013 12:14 AM, Dmitry Dukhov wrote:
> This is simple code with browser's problem.
>
> First code works correctly.
>
> run new ViewAlerts().show(parentGrp) again and upssss "The requested
> operation cannot be performed on a file with a user-mapped section open"
>
>
>
> public class ViewAlerts {
>
>
> public ViewAlerts() {
> }
>
> protected Composite viewHistory(final Composite parentTab) {
>
> Composite grpBrowser = new Composite(parentTab, SWT.BORDER);
> GridData data = new GridData(GridData.FILL_HORIZONTAL |
> GridData.FILL_VERTICAL);
> data.heightHint = 250;
> grpBrowser.setLayoutData(data);
> grpBrowser.setLayout( new FillLayout() );
>
> Browser browser = new Browser(grpBrowser, SWT.BORDER);
> browser.setText("Emty");
> browser.setText( "A report??" ); return grpBrowser;
> }
>
> public void show(Composite parent) {
> TabFolder tabFolder = new TabFolder(parent, SWT.NONE);
>
> TabItem tabHistory = new TabItem(tabFolder, SWT.NONE);
> tabHistory.setText("History of alerts");
> tabHistory.setControl(viewHistory(tabFolder));
> }
>
> }
>

--
Ivan Furnadjiev

Twitter: @EclipseRAP
Blog: http://eclipsesource.com/blogs/

Professional services for RAP and RCP?
http://eclipsesource.com/services/rap/

Report message to a moderator

Re: Browser widget problem [message #1042758 is a reply to message #1042287]

Tue, 16 April 2013 20:58

Dmitry Dukhov

Messages: 192
Registered: February 2013

Senior Member

- use 2.1m1
- 32-bit Java.
- embedded Jetty

Report message to a moderator

Re: Browser widget problem [message #1042996 is a reply to message #1042758]

Wed, 17 April 2013 06:12

Ivan Furnadjiev

Messages: 2426
Registered: July 2009
Location: Sofia, Bulgaria

Senior Member

Dmitry,
this is really an interesting problem. As no one from as can reproduce
it by the snippets posted by you, could you create a complete simple
project ready for import and start that demonstrate the issue.
Thanks,
Ivan

On 4/16/2013 11:58 PM, Dmitry Dukhov wrote:
>
> - use 2.1m1
> - 32-bit Java.
> - embedded Jetty
>
>
>

--
Ivan Furnadjiev

Twitter: @EclipseRAP
Blog: http://eclipsesource.com/blogs/

Professional services for RAP and RCP?
http://eclipsesource.com/services/rap/

Report message to a moderator

Re: Browser widget problem [message #1393134 is a reply to message #1042996]

Thu, 03 July 2014 09:37

Stefan Klaus

Messages: 21
Registered: February 2011

Junior Member

Also it is a very old thread, i want to mention my solution:
I could reproduce the error with embedded jetty on windows.
Following reason:
Jetty buffers static content for webapps such as html files, css files, images etc and uses memory mapped files to do this if the NIO connectors are being used. The problem is that on Windows, memory mapping a file causes the file to be locked, so that the file cannot be updated or replaced. This means that effectively you have to stop Jetty in order to update a file
Solution:

webAppContext.setInitParameter(org.eclipse.jetty.servlet.Default.useFileMappedBuffer", "false");

and everything works fine.

Report message to a moderator

Previous Topic:	Difficulty Deploying RAP 2.0 (1.5 seems to be fine) Application using Tycho
Next Topic:	File Upload Incubator Not Signed in RAP 2.0 compatible p2 repository

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Sat Apr 20 03:47:02 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter