Add capability

Author: jan-elastic

x-pack/plugin/esql/qa/testFixtures/src/main/resources/change_point.csv-spec

@@ -1,5 +1,5 @@
 change point stationary with timestamp argument
-# required_capability: change_point
+required_capability: change_point
 
 FROM k8s
   | STATS count=COUNT() BY timestamp=BUCKET(@timestamp, 1 minute)
@@ -12,7 +12,7 @@ cp:keyword
 
 
 change point stationary without timestamp argument
-# required_capability: change_point
+required_capability: change_point
 
 FROM k8s
   | STATS count=COUNT() BY @timestamp=BUCKET(@timestamp, 1 minute)
@@ -25,7 +25,7 @@ cp:keyword
 
 
 change point spike (long)
-# required_capability: change_point
+required_capability: change_point
 
 FROM k8s
   | STATS count=COUNT() BY timestamp=BUCKET(@timestamp, 1 minute)
@@ -39,7 +39,7 @@ cp:keyword
 
 
 change point spike (int)
-# required_capability: change_point
+required_capability: change_point
 
 FROM k8s
   | STATS count=COUNT() BY timestamp=BUCKET(@timestamp, 1 minute)
@@ -53,7 +53,7 @@ cp:keyword
 
 
 change point spike (double)
-# required_capability: change_point
+required_capability: change_point
 
 FROM k8s
   | STATS count=COUNT() BY timestamp=BUCKET(@timestamp, 1 minute)
@@ -67,7 +67,7 @@ cp:keyword
 
 
 change point grouping with timestamp argument
-# required_capability: change_point
+required_capability: change_point
 
 FROM k8s
   | STATS count=COUNT() BY timestamp=BUCKET(@timestamp, 1 minute), cluster
@@ -83,7 +83,7 @@ cp:keyword
 
 
 change point grouping without timestamp argument
-# required_capability: change_point
+required_capability: change_point
 
 FROM k8s
   | STATS count=COUNT() BY @timestamp=BUCKET(@timestamp, 1 minute), cluster

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/action/EsqlCapabilities.java

@@ -600,7 +600,12 @@ public enum Cap {
         /**
          * Full text functions can be used in disjunctions
          */
-        FULL_TEXT_FUNCTIONS_DISJUNCTIONS;
+        FULL_TEXT_FUNCTIONS_DISJUNCTIONS,
+
+        /**
+         * Support change point detection function "CHANGE_POINT"
+         */
+        CHANGE_POINT;
 
         private final boolean enabled;