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Exporting diagram/node from odesign Sirius file

I have a Java application which uses Sirius to model some nodes and diagrams.
I have two questions:
1. How I can export these diagrams as an XML/JSON? Is it possible to export some nodes of the diagram only? Please see the attached screenshot. For example, I want to export the node "DataRetentionPeriod" as a JSON. What is the required code and where I should insert it?
2. Can I use Post and Get commands of Liferay to export a diagram or some nodes of the Sirius files. I know that by right clicking on the modelling editor of the Sirius file I can export the diagram as an image. Can I add an option, similar to export an image, to export or call another function which can create endpoints or connection to a database? see the attach screenshot please.

The diagram is already an XML file (or more precisely, an XMI). Open the .aird file with any text editor. Note that the aird represents only the "drawing" element while you may be interested in the underlying "semantic" element (usually an XMI model conforming to your Ecore metamodel). https://www.eclipse.org/sirius/doc/ may help
You want to have a look at Eclipse Commands which allow you to enhance your RCP application with additional menus, menu entries, etc. Vogella.com has a lot of tutorials about this that should help you. Then you can do any behavior, like transforming a model element in an appropriate JSON and upload it to your database.

How to drag and open file in editor?

I have a editor developed which opens the xml file and display it there (with the proper structure), for this I need to browse through all the times to select target file, in what way I can add dragging in file feature enable for this ?
The report editor is developed with Java SWT components.
I want to know the possible ways or API available for "dragging in" file ?

This link might help you.
DragSource class which provides the drag and drip API in SWT.
http://www.java2s.com/Tutorial/Java/0280__SWT/DraggingandDropping.htm

creating a link to pdf files in netbeans

I am working on a project in netbeans, and right now I want to embed links to various pdf files so that when that link is clicked, the program will call up the appropriate pdf in it or somewhere in the hard disk and open it with the pdf viewer.
I came across a 'clickable label' concept in one article, but I dont know how to do that, all the labels I insert do not link to the source tab when I double click on them.
Can someone please provide an example of how to implement a 'clickable label'?

how to change my pdf viewer library in android

i have one pdf viewer which i have downloaded from here :https://andpdf.svn.sourceforge.net/svnroot/andpdf with svn
it's working fine in emulator..but it dosen't have feature of seraching any text like we do in adobe pdf reader.so i want to add text view searching feature in it,can any one tell me how to do it?i am new to android and i don't no too much about it,and if i need to change my library for it than what library i should use and from where i can get it..please help me to solve it if any one knows about it...
Thanks in Advance
Aamirkhan I.

How to write an editor that shows the content of a folder in eclipse?

Motivation
I have written an eclipse plugin that shows me a list of all files and folders with unreviewed content. When selecting a folder, I want an editor to open showing all files and subfolders that this folder contains. It has to work for versioned items, too. So I have to create the content of the editor within my plugin (no backing IResource).
What I currently have
Right now I'm opening a RemoteFileEditorInput for a versioned file (subclipse) or I'm using IWorkbenchPage.openEditor() for a FileEditorInput.
Question
What's an easy way to visualize dynamic content (directory listing) inside of an text editor?
EDIT 2010-04-13:
More Context
I want to be able to create some code review comments on a directory listing. For this I want to be able to open a diff viewer to see which elements were removed or added between two revisions of the directory.
I'd like to enter a comment for a directory the same way I do for a text file. That's why I try to display the directory content as a text file - I've already implemented the mechanisms for commenting a text file.
I call the content of the directory editor "dynamic", because it's not really backed by an existing directory in the filesystem. For older versions of a directory I will create the editor content within my program code.

I'm afraid I don't totally understand your question (and I lack the rep to comment on it).
Is this right?: You want to be able to open one of three editors in support of your goal:
An editor for unversioned files (you say you have this)
An editor for versioned files (you say you have this)
An editor for directories (this is what you need?)
What does the user do here? What does it look like?
I'm confused by "What's an easy way to visualize dynamic content (directory listing) inside of an text editor?"
Knowing that I probably completely miss your point, I would note that your editor can contain whatever controls you want it to (cf. some of the "forms" editors in PDE, like for editing a plug-in manifest) - you'd probably extend EditorPart, maybe create a ManagedForm in your createPartControl(), create a ListViewer, TableViewer, or TreeViewer in there, give it an appropriate content provider, and give it an appropriate label provider.
I'm also confused by "What's an easy way to visualize dynamic content (directory listing) inside of an text editor?"
I can only assume that you want to somehow poll or listen to some events and tell your viewer to update() or refresh().
Finally I would question whether the directory listing really belongs in an editor . . . most navigation happens in views. Will the user actually be performing edits to the directory somehow, and possibly "saving" them at some later time?
I hope this helps us all narrow down into whatever will help you.