Data Locality pattern #559 (#889)

* Data Locality pattern #559

* Fixed review comments

* updated pom

* Fixed failed build

data-locality/src/main/java/com/iluwatar/data/locality/Application.java

@@ -0,0 +1,53 @@
+/**
+ * The MIT License
+ * Copyright (c) 2014 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.data.locality;
+
+import com.iluwatar.data.locality.game.GameEntity;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Use the Data Locality pattern is when you have a performance problem.
+ * Take advantage of that to improve performance by increasing data locality — keeping data in
+ * contiguous memory in the order that you process it.
+ *
+ * Example:  Game loop that processes a bunch of game entities.
+ * Those entities are decomposed into different domains 
+ * — AI, physics, and rendering — using the Component pattern.
+ *
+ */
+public class Application {
+
+  private static final Logger LOGGER = LoggerFactory.getLogger(Application.class);
+
+  private static final int NUM_ENTITIES = 5;
+  /**
+   * Start game loop with each component have NUM_ENTITIES instance
+   */
+  public static void main(String[] args) {
+    LOGGER.info("Start Game Application using Data-Locality pattern");
+    GameEntity gameEntity = new GameEntity(NUM_ENTITIES);
+    gameEntity.start();
+    gameEntity.update();
+  }
+}