OQL all instances from a package

Question

Is it possible in OQL to retrieve all the objects that belongs to a package? Or can I query with wildcards?

As @haridsv suggested I tried:

SELECT * from "com.example.*"

and

SELECT a from "com\.example\..*"

but in VisualVM it complaints that no such package exists.

Even

SELECT a from "java.io.File" a

Fails.

Thanks!

ssedano.

Answer 1

I found the answer in VisualVM OQL help.

select filter(heap.classes(), "/com.example./(it.name)")

Answer 2

You can use regular expression like this:

SELECT * from "<packagename>.*"

If the package name is "java.io" you would use:

SELECT * from "java\.io\..*"

Note the quotes around the regex and how the dots in the path are protected.

Answer 3

From VisualVM limited documentation:

• select all classes that have name pattern java.net.*

select filter(heap.classes(), "/java.net./.test(it.name)")

https://visualvm.github.io/documentation.html

The trick is in the "test(it.name)"