Change in ovirt-engine[master]: webadmin: Reimplement TagAssigningModel#postGetAttachedTags

Allon Mureinik has submitted this change and it was merged. Change subject: webadmin: Reimplement TagAssigningModel#postGetAttachedTags ...................................................................... webadmin: Reimplement TagAssigningModel#postGetAttachedTags TagAssigningModel#postGetAttachedTags was implemented naively using Linq as follows: 1. Iterating over the list of tags and producing a list of tags with one tag per unique ID 2. Iterating over the unique list and counting how many tags share the same ID 3. Comparing this number to the size of the selected items list This patch reimplements steps (1) and (2) using Java 8's streams by iterating over the list of tags once and reducing it to a map from the tag's ID to the number of appearances this ID has in the list. This reimplementation not only cleans up the code and makes it easier to read, it improves this method's performance by an order of magnitude. As a consequence of this change, the method Linq#distinct, the IEqualityComparer interface that it uses and its TagsEqualityComparer implementation are no longer used, and are removed from the codebase. Change-Id: I3fa4e139787cfe80caaf43efae5ea4ce72a06ea5 Signed-off-by: Allon Mureinik <amureini(a)redhat.com&gt; --- M frontend/webadmin/modules/uicommonweb/src/main/java/org/ovirt/engine/ui/uicommonweb/Linq.java M frontend/webadmin/modules/uicommonweb/src/main/java/org/ovirt/engine/ui/uicommonweb/TagAssigningModel.java D frontend/webadmin/modules/uicommonweb/src/main/java/org/ovirt/engine/ui/uicommonweb/TagsEqualityComparer.java D frontend/webadmin/modules/uicompat/src/main/java/org/ovirt/engine/ui/uicompat/IEqualityComparer.java 4 files changed, 6 insertions(+), 53 deletions(-) Approvals: Tal Nisan: Looks good to me, approved Jenkins CI: Passed CI tests Allon Mureinik: Verified -- To view, visit https://gerrit.ovirt.org/75449 To unsubscribe, visit https://gerrit.ovirt.org/settings Gerrit-MessageType: merged Gerrit-Change-Id: I3fa4e139787cfe80caaf43efae5ea4ce72a06ea5 Gerrit-PatchSet: 2 Gerrit-Project: ovirt-engine Gerrit-Branch: master Gerrit-Owner: Allon Mureinik <amureini(a)redhat.com&gt; Gerrit-Reviewer: Allon Mureinik <amureini(a)redhat.com&gt; Gerrit-Reviewer: Jenkins CI Gerrit-Reviewer: Tal Nisan <tnisan(a)redhat.com&gt; Gerrit-Reviewer: Vojtech Szocs <vszocs(a)redhat.com&gt; Gerrit-Reviewer: gerrit-hooks <automation(a)ovirt.org&gt;