added hal serializer

src/app/core/serializer.ts

@@ -0,0 +1,38 @@
+/**
+ * A Serializer turns responses from the backend to models
+ * and vice versa
+ */
+export interface Serializer<T> {
+
+  /**
+   * Convert a model in to the format expected by the backend
+   *
+   * @param model The model to serialize
+   * @returns An object to send to the backend
+   */
+  serialize(model: T): any;
+
+  /**
+   * Convert an array of models in to the format expected by the backend
+   *
+   * @param models The array of models to serialize
+   * @returns An object to send to the backend
+   */
+  serializeArray(models: Array<T>): any;
+
+  /**
+   * Convert a response from the backend in to a model.
+   *
+   * @param response An object returned by the backend
+   * @returns a model of type T
+   */
+  deserialize(response: any): T;
+
+  /**
+   * Convert a response from the backend in to an array of models
+   *
+   * @param response An object returned by the backend
+   * @returns an array of models of type T
+   */
+  deserializeArray(response: any): Array<T>;
+}