License check for ES|QL categorize (#126595)

Author: jan-elastic

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/expression/function/grouping/Categorize.java

@@ -10,6 +10,8 @@
 import org.elasticsearch.common.io.stream.NamedWriteableRegistry;
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;
+import org.elasticsearch.license.XPackLicenseState;
+import org.elasticsearch.xpack.esql.LicenseAware;
 import org.elasticsearch.xpack.esql.core.expression.Expression;
 import org.elasticsearch.xpack.esql.core.expression.Nullability;
 import org.elasticsearch.xpack.esql.core.tree.NodeInfo;
@@ -20,6 +22,7 @@
 import org.elasticsearch.xpack.esql.expression.function.FunctionType;
 import org.elasticsearch.xpack.esql.expression.function.Param;
 import org.elasticsearch.xpack.esql.io.stream.PlanStreamInput;
+import org.elasticsearch.xpack.ml.MachineLearning;
 
 import java.io.IOException;
 import java.util.List;
@@ -36,7 +39,7 @@
  *     For the implementation, see {@link org.elasticsearch.compute.aggregation.blockhash.CategorizeBlockHash}
  * </p>
  */
-public class Categorize extends GroupingFunction.NonEvaluatableGroupingFunction {
+public class Categorize extends GroupingFunction.NonEvaluatableGroupingFunction implements LicenseAware {
     public static final NamedWriteableRegistry.Entry ENTRY = new NamedWriteableRegistry.Entry(
         Expression.class,
         "Categorize",
@@ -128,4 +131,9 @@ public Expression field() {
     public String toString() {
         return "Categorize{field=" + field + "}";
     }
+
+    @Override
+    public boolean licenseCheck(XPackLicenseState state) {
+        return MachineLearning.CATEGORIZE_TEXT_AGG_FEATURE.check(state);
+    }
 }

x-pack/plugin/ml/src/main/java/org/elasticsearch/xpack/ml/MachineLearning.java

@@ -525,7 +525,7 @@ public class MachineLearning extends Plugin
         License.OperationMode.PLATINUM
     );
 
-    private static final LicensedFeature.Momentary CATEGORIZE_TEXT_AGG_FEATURE = LicensedFeature.momentary(
+    public static final LicensedFeature.Momentary CATEGORIZE_TEXT_AGG_FEATURE = LicensedFeature.momentary(
         MachineLearningField.ML_FEATURE_FAMILY,
         "categorize-text-agg",
         License.OperationMode.PLATINUM