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.

in jvisualvm it seems you need to write SELECT using small letters, ie "select". — user1050755, Sep 18 '17 at 15:43

score 5 · Answer 1 · answered Sep 15 '12 at 17:06

5

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.

answered Sep 15 '12 at 17:06

haridsv

Using the OQL console in visualvm those selects does not work. but thanks for answer !! – ssedano Sep 17 '12 at 08:20
3

I was suggesting OQL for Eclipse MAT, where as the OQL syntax for VisualVM is quite different. My apologies if I missed to see your requirements clearly. – haridsv Sep 17 '12 at 10:46
It didn't occur to me that I should clarify, may be because I had my head deep in a heap analysis with MAT :) – haridsv Sep 18 '12 at 03:49
@haridsv: I was using Android's memory analyzer and your queries were exactly what I needed. I found the example given in the selected answer and it doesn't work but your suggestion did. Thanks! – gMale Nov 26 '13 at 19:42

score 5 · Accepted Answer · edited Nov 14 '13 at 08:18

5

I found the answer in VisualVM OQL help.

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

edited Nov 14 '13 at 08:18

Neeme Praks

answered Sep 17 '12 at 09:27

ssedano

score 0 · Answer 3 · answered Nov 18 '20 at 16:52

0

From VisualVM limited documentation:

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

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

answered Nov 18 '20 at 16:52

Mike

3 Answers3