How to import user libraries programmatically from a file

I have "myUserLib.userlibraries" file with all the required user libraries defined. As part of my plug-in that i developed (this will create web projects and required settings), i want to import this file to开发者_JAVA百科 the projects created by the plug-in.

Is there any programatic way to import libraries from a file?

If you are developing a plugin to add these libraries to project classpath, I recommend that you consider writing a custom classpath container rather than re-using the user libraries facility. If you write a custom container, project classpath would include id of your container and JDT will query your code at runtime to get the actual list of classpath entries.

This will save you from having to store and maintain the contents of your library in workspace preferences, as you would have to do if you took the user library approach.

See org.eclipse.jdt.core.IClasspathContainer class.

Finally i got this worked the way i want. I am now able to programmatically upload the userlibraries into workspace preferences from "myuserlibs.userlibraries" file. I used following eclipse plugins classes.

org.eclipse.jdt.internal.core.UserLibrary.class
org.eclipse.jdt.internal.core.UserLibraryManager.class
org.eclipse.jdt.internal.core.UserLibraryClasspathContainer.class
org.eclipse.jdt.internal.core.UserLibraryClasspathContainerInitializer.class

These classes have bunch of methods to achieve this task.

Once they got uploaded in to preferences, i am also able to programmatically add required user library entries into a respective projects (created by my plugin). Because i have around 8 web projects in my workspace and all of them required different set of user libraries in their classpath container.