SaveAsCapable

In NetBeans Platform you can implement your own SaveAs action like this:
- put this into MyTopComponent.java:

public class MyTopComponent .... {
    private final InstanceContent myContent = new InstanceContent();
    private final Lookup myLookup = new AbstractLookup(myContent);
    private FileObject fo;

    MyTopComponent() {
        ...
        editorContent.add(new SQLEditorSaveAs());
        associateLookup(editorLookup);
    }

    public void setFo(FileObject fo) {
        this.fo = fo;
        // load the file and display it in TextArea
        // this is optional, but putting file's DataObject into this TopComponent's lookup 
        // will make FileChooser for the SaveAS action start in the folder where fo is located
        DataObject myDataObject = DataObject.find(this.fo);
        myContent.add(myDataObject);
    }

    private class MySaveAs implements SaveAsCapable {
        @Override 
        public void saveAs(FileObject folder, String name) throws IOException {
            // save to file, database, ...
        }
    }
}