1 files changed, 10 insertions, 0 deletions

diff --git a/Domains/hu.bme.mit.inf.dslreasoner.domains.cps/src/hu/bme/mit/inf/dslreasoner/domains/cps/queries/CpsQueries.vql b/Domains/hu.bme.mit.inf.dslreasoner.domains.cps/src/hu/bme/mit/inf/dslreasoner/domains/cps/queries/CpsQueries.vql
index 7f7cc5a4..40337443 100644
--- a/Domains/hu.bme.mit.inf.dslreasoner.domains.cps/src/hu/bme/mit/inf/dslreasoner/domains/cps/queries/CpsQueries.vql
+++ b/Domains/hu.bme.mit.inf.dslreasoner.domains.cps/src/hu/bme/mit/inf/dslreasoner/domains/cps/queries/CpsQueries.vql
@@ -96,6 +96,16 @@ pattern requirementNotSatisfied(Req : Requirement) {
         check(Instances < RequiredCount);
 }
 
+@Constraint(severity = "error", key = {Req},
+        message = "Redundant instances must not be allocated to the same host.")
+pattern redundantInstancesOnSameHost(Req : Requirement) {
+        Requirement.instances(Req, App1);
+        Requirement.instances(Req, App2);
+        App1 != App2;
+        ApplicationInstance.allocatedTo(App1, Host);
+        ApplicationInstance.allocatedTo(App2, Host);
+}
+
 pattern averageFreeMemoryMetric(Average : java Double) {
         Average == avg find freeMemoryPercentage(_, #_);
 }