How to hijack files from clearcase from eclipse plugin - eclipse

Question

I am developing a component which generates code based on templates inside java class. The project use clearcase as SCM. After the code update, the files are in read-only state. If i am adding anything to any java class, i have to make it hijack and paste the source code templates inside the class. Let's suppose the jAutoDoc plugin which is used for adding comment. If user select a class, click on generate comment. The comment will not paste if the file is not in write mode.
Clearcase Plugin Vendor : IBM Rational.
Eclipse Version : 3.5
Please help. Is there any way to do hijack a file from java code?
Thanks in advance..

Answer 1

Thanks VonC.
For making a java file in write mode through eclipse JDT API. This method will set the preference "read only" of the resource to "false".
private static void setCompilationUnitWriteMode(ICompilationUnit cu) throws CoreException {
ResourceAttributes resourceAttributes = cu.getResource().getResourceAttributes();
if (resourceAttributes != null) {
// Setting Writemode true
resourceAttributes.setReadOnly(false);
cu.getResource().setResourceAttributes(resourceAttributes);
}
}
For Non Java Resource
First create the IFile object, set the preference "read only" of the resource to "false".
IFile file = path.getFile()
file.getFile().getResourceAttributes();
if (resourceAttributes != null) {
resourceAttributes.setReadOnly(false);
file.setResourceAttributes(resourceAttributes);
}

Answer 2

Hijacking files only means making them read - write through an OS-based operation. (for snapshot view only, not dynamic ones)
The question is though: do you need to version your classes completed by your plugin?
Because in that case, a cleartool checkout is more appropriate.
Otherwise, read write is enough, changing file attribute through java.