#631 - Partial Response : Get specified fields response.

partial-response/src/main/java/com/iluwatar/partialresponse/FieldJsonMapper.java

@@ -0,0 +1,31 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Gopinath Langote
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package com.iluwatar.partialresponse;
+
+public class FieldJsonMapper {
+  public String toJson(Video video, String[] fields) {
+    return null;
+  }
+}

partial-response/src/main/java/com/iluwatar/partialresponse/VideoResource.java

@@ -27,13 +27,18 @@ package com.iluwatar.partialresponse;
 import java.util.Map;
 
 public class VideoResource {
+  private FieldJsonMapper fieldJsonMapper;
   private Map<Integer, Video> videos;
 
-  public VideoResource(Map<Integer, Video> videos) {
+  public VideoResource(FieldJsonMapper fieldJsonMapper, Map<Integer, Video> videos) {
+    this.fieldJsonMapper = fieldJsonMapper;
     this.videos = videos;
   }
 
-  public String getDetails(Integer id) {
-    return videos.get(id).toString();
+  public String getDetails(Integer id, String... fields) {
+    if (fields.length == 0) {
+      return videos.get(id).toString();
+    }
+    return fieldJsonMapper.toJson(videos.get(id), fields);
   }
 }