Simplify expression and statement

Change-Id: I66cc2bee3a929108c7b4451b3d64c9aac4dcf5d6

@@ -53,12 +53,8 @@ public abstract class BooleanConstraint implements Constraint {
 
     @Override
     public boolean validate(Path path, LinkResourceService resourceService) {
-        for (Link link : path.links()) {
-            if (!isValid(link, resourceService)) {
-                return false;
-            }
-        }
-        return true;
+        return path.links().stream()
+                .allMatch(link -> isValid(link, resourceService));
     }
 
 }

@@ -60,7 +60,7 @@ public class LinkTypeConstraint extends BooleanConstraint {
     @Override
     public boolean isValid(Link link, LinkResourceService resourceService) {
         boolean contains = types.contains(link.type());
-        return isInclusive ? contains : !contains;
+        return isInclusive == contains;
     }
 
     /**