Vojtech Szocs has submitted this change and it was merged. Change subject: webadmin,userportal: Fix AsyncQuery related NPE ...................................................................... webadmin,userportal: Fix AsyncQuery related NPE AsyncQuery no-argument constructor is used throughout both UiCommon and GWT UI code. This constructor leaves 'asyncCallback' reference as null, among other fields. It's therefore assumed that this reference will be set after AsyncQuery constructor. However, in some places, this is not the case. For example, AboutPopupPresenterWidget invokes public GetConfigurationValue query without setting 'asyncCallback' reference, and Frontend query success handler fails on NPE with 'callback.getDel()' returning null. This patch modifies AsyncQuery no-argument constructor to fix the above mentioned issue, using null object singleton that represents an empty (no-op) query callback. Change-Id: I57a3794c70b6c48e58285cf6366bcbfd4e84665d Signed-off-by: Vojtech Szocs <vszocs(a)redhat.com&gt; --- M frontend/webadmin/modules/frontend/src/main/java/org/ovirt/engine/ui/frontend/AsyncQuery.java 1 file changed, 13 insertions(+), 0 deletions(-) Approvals: Vojtech Szocs: Verified; Looks good to me, approved -- To view, visit http://gerrit.ovirt.org/10727 To unsubscribe, visit http://gerrit.ovirt.org/settings Gerrit-MessageType: merged Gerrit-Change-Id: I57a3794c70b6c48e58285cf6366bcbfd4e84665d Gerrit-PatchSet: 2 Gerrit-Project: ovirt-engine Gerrit-Branch: master Gerrit-Owner: Vojtech Szocs <vszocs(a)redhat.com&gt; Gerrit-Reviewer: Alona Kaplan <alkaplan(a)redhat.com&gt; Gerrit-Reviewer: Daniel Erez <derez(a)redhat.com&gt; Gerrit-Reviewer: Gilad Chaplik <gchaplik(a)redhat.com&gt; Gerrit-Reviewer: Tomas Jelinek <tjelinek(a)redhat.com&gt; Gerrit-Reviewer: Vojtech Szocs <vszocs(a)redhat.com&gt;