JBPM-9774: Create ComparablePeriodSerializer

See related PR:
- kiegroup/jbpm#1947

kie-dmn/kie-dmn-feel/pom.xml

@@ -80,6 +80,16 @@
       <scope>test</scope>
     </dependency>
 
+    <dependency>
+      <groupId>com.fasterxml.jackson.core</groupId>
+      <artifactId>jackson-core</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>com.fasterxml.jackson.core</groupId>
+      <artifactId>jackson-databind</artifactId>
+    </dependency>
+
     <!-- Tests -->
     <dependency>
       <groupId>junit</groupId>

kie-dmn/kie-dmn-feel/src/main/java/org/kie/dmn/feel/lang/types/impl/ComparablePeriodSerializer.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2021 Red Hat, Inc. and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.kie.dmn.feel.lang.types.impl;
+
+import java.io.IOException;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
+
+
+public class ComparablePeriodSerializer extends StdSerializer<ComparablePeriod>{
+    public ComparablePeriodSerializer() {
+        this(null);
+    }
+
+    public ComparablePeriodSerializer(Class<ComparablePeriod> t) {
+        super(t);
+    }
+
+    @Override
+    public void serialize(ComparablePeriod v, JsonGenerator g, SerializerProvider sp) throws IOException {
+        sp.defaultSerializeValue(v.asPeriod(), g);
+    }
+
+}