limit SELECT FilterValue size to < 20000 as big values cause memory i…

…ssues

backend/src/main/java/com/bakdata/conquery/apiv1/query/concept/filter/FilterValue.java

@@ -19,6 +19,7 @@
 import com.bakdata.conquery.models.identifiable.ids.specific.FilterId;
 import com.bakdata.conquery.models.query.QueryResolveContext;
 import com.bakdata.conquery.models.query.queryplan.filter.FilterNode;
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
 import com.fasterxml.jackson.core.JsonParser;
 import com.fasterxml.jackson.core.JsonProcessingException;
@@ -27,6 +28,7 @@
 import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
 import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
 import com.fasterxml.jackson.databind.exc.InvalidTypeIdException;
+import io.dropwizard.validation.ValidationMethod;
 import lombok.EqualsAndHashCode;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
@@ -44,6 +46,10 @@
 @EqualsAndHashCode
 @ToString(of = "value")
 public abstract class FilterValue<VALUE> {
+	/**
+	 * Very large SELECT FilterValues can cause issues, so we just limit it to large but not gigantic quantities.
+	 */
+	private static final int MAX_NUMBER_FILTER_VALUES = 20_000;
 	@NotNull
 	@Nonnull
 	@NsIdRef
@@ -68,6 +74,12 @@ public static class CQMultiSelectFilter extends FilterValue<String[]> {
 		public CQMultiSelectFilter(@NsIdRef Filter<String[]> filter, String[] value) {
 			super(filter, value);
 		}
+
+		@ValidationMethod(message = "Too many values selected.")
+		@JsonIgnore
+		public boolean isSaneAmountOfFilterValues() {
+			return getValue().length < MAX_NUMBER_FILTER_VALUES;
+		}
 	}
 
 	@NoArgsConstructor
@@ -77,6 +89,12 @@ public static class CQBigMultiSelectFilter extends FilterValue<String[]> {
 		public CQBigMultiSelectFilter(@NsIdRef Filter<String[]> filter, String[] value) {
 			super(filter, value);
 		}
+
+		@ValidationMethod(message = "Too many values selected.")
+		@JsonIgnore
+		public boolean isSaneAmountOfFilterValues() {
+			return getValue().length < MAX_NUMBER_FILTER_VALUES;
+		}
 	}
 
 	@NoArgsConstructor