feature: #2542 Dynamic proxy pattern (#2814)

* #2542 First commit * #2542 Fixing comments * #2542 Refactoring code * #2542 Update Readme * #2542 Add mockito dependencies * #2542 Add unit test * #2542 Fixes for testing * #2542 Fixing typos * #2542 Fixing SonarLint issues * #2542 Fixing code review --------- Co-authored-by: Sashir Estela <sashirestela@yahoo.com> Co-authored-by: Ilkka Seppälä <iluwatar@users.noreply.github.com>
2026-05-15 10:58:51 +00:00 · 2024-03-23 05:34:32 -05:00
parent 4b704c807f
commit f65bb820d8
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+/*
+ * This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
+ *
+ * The MIT License
+ * Copyright © 2014-2022 Ilkka Seppälä
+ *
+ * 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.dynamicproxy.tinyrestclient;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.type.CollectionType;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import lombok.extern.slf4j.Slf4j;
+
+/**
+ * Utility class to handle Json operations.
+ */
+@Slf4j
+public class JsonUtil {
+
+  private static ObjectMapper objectMapper = new ObjectMapper();
+
+  private JsonUtil() {
+  }
+
+  /**
+   * Convert an object to a Json string representation.
+   *
+   * @param object Object to convert.
+   * @param <T>    Object's class.
+   * @return Json string.
+   */
+  public static <T> String objectToJson(T object) {
+    try {
+      return objectMapper.writeValueAsString(object);
+    } catch (JsonProcessingException e) {
+      LOGGER.error("Cannot convert the object " + object + " to Json.", e);
+      return null;
+    }
+  }
+
+  /**
+   * Convert a Json string to an object of a class.
+   *
+   * @param json  Json string to convert.
+   * @param clazz Object's class.
+   * @param <T>   Object's generic class.
+   * @return Object.
+   */
+  public static <T> T jsonToObject(String json, Class<T> clazz) {
+    try {
+      return objectMapper.readValue(json, clazz);
+    } catch (IOException e) {
+      LOGGER.error("Cannot convert the Json " + json + " to class " + clazz.getName() + ".", e);
+      return null;
+    }
+  }
+
+  /**
+   * Convert a Json string to a List of objects of a class.
+   *
+   * @param json  Json string to convert.
+   * @param clazz Object's class.
+   * @param <T>   Object's generic class.
+   * @return List of objects.
+   */
+  public static <T> List<T> jsonToList(String json, Class<T> clazz) {
+    try {
+      CollectionType listType = objectMapper.getTypeFactory()
+          .constructCollectionType(ArrayList.class, clazz);
+      return objectMapper.reader().forType(listType).readValue(json);
+    } catch (JsonProcessingException e) {
+      LOGGER.error("Cannot convert the Json " + json + " to List of " + clazz.getName() + ".", e);
+      return List.of();
+    }
+  }
+
+}