#159: display and validate route steps

docs-core/src/main/java/com/sismics/docs/core/dao/jpa/dto/RouteStepDto.java

@@ -1,6 +1,10 @@
 package com.sismics.docs.core.dao.jpa.dto;
 
 import com.sismics.docs.core.constant.RouteStepType;
+import com.sismics.util.JsonUtil;
+
+import javax.json.Json;
+import javax.json.JsonObjectBuilder;
 
 /**
  * Route step DTO.
@@ -147,4 +151,23 @@ public class RouteStepDto {
         this.validatorUserName = validatorUserName;
         return this;
     }
+
+    /**
+     * Transform in JSON.
+     *
+     * @return JSON object builder
+     */
+    public JsonObjectBuilder toJson() {
+        return Json.createObjectBuilder()
+                .add("name", getName())
+                .add("type", getType().name())
+                .add("comment", JsonUtil.nullable(getComment()))
+                .add("end_date", JsonUtil.nullable(getEndDateTimestamp()))
+                .add("validator_username", JsonUtil.nullable(getValidatorUserName()))
+                .add("target", Json.createObjectBuilder()
+                        .add("id", getTargetId())
+                        .add("name", JsonUtil.nullable(getTargetName()))
+                        .add("type", getTargetType()))
+                .add("transition", JsonUtil.nullable(getTransition()));
+    }
 }

docs-core/src/main/java/com/sismics/util/JsonUtil.java

@@ -0,0 +1,50 @@
+package com.sismics.util;
+
+import javax.json.Json;
+import javax.json.JsonValue;
+
+/**
+ * JSON utilities.
+ * 
+ * @author bgamard
+ */
+public class JsonUtil {
+    /**
+     * Returns a JsonValue from a String.
+     * 
+     * @param value Value
+     * @return JsonValue
+     */
+    public static JsonValue nullable(String value) {
+        if (value == null) {
+            return JsonValue.NULL;
+        }
+        return Json.createObjectBuilder().add("_", value).build().get("_");
+    }
+    
+    /**
+     * Returns a JsonValue from an Integer.
+     * 
+     * @param value Value
+     * @return JsonValue
+     */
+    public static JsonValue nullable(Integer value) {
+        if (value == null) {
+            return JsonValue.NULL;
+        }
+        return Json.createObjectBuilder().add("_", value).build().get("_");
+    }
+
+    /**
+     * Returns a JsonValue from an Long.
+     *
+     * @param value Value
+     * @return JsonValue
+     */
+    public static JsonValue nullable(Long value) {
+        if (value == null) {
+            return JsonValue.NULL;
+        }
+        return Json.createObjectBuilder().add("_", value).build().get("_");
+    }
+}