bind java objects to custom js objects

winterbe · winterbe · commit 7172f3d8a521 · 2014-04-01T18:02:15.000+02:00
diff --git a/res/nashorn5.js b/res/nashorn5.js
@@ -0,0 +1,22 @@
+function Product(name) {
+    this.name = name;
+}
+
+Product.prototype.stock = 0;
+Product.prototype.price = 0;
+Product.prototype.getValueOfGoods = function() {
+    return this.stock * this.price;
+};
+
+var product = new Product('Pencil');
+product.price = 4.99;
+product.stock = 78;
+
+print('Value of Goods: ' + product.getValueOfGoods());
+
+
+var getValueOfGoods = function(javaProduct) {
+    var jsProduct = new Product();
+    Object.bindProperties(jsProduct, javaProduct);
+    return jsProduct.getValueOfGoods();
+};
diff --git a/src/com/winterbe/java8/Nashorn5.java b/src/com/winterbe/java8/Nashorn5.java
@@ -0,0 +1,29 @@
+package com.winterbe.java8;
+
+import javax.script.Invocable;
+import javax.script.ScriptEngine;
+import javax.script.ScriptEngineManager;
+
+/**
+ * Bind java objects to custom javascript objects.
+ *
+ * @author Benjamin Winterberg
+ */
+public class Nashorn5 {
+
+    public static void main(String[] args) throws Exception {
+        ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");
+        engine.eval("load('res/nashorn5.js')");
+
+        Invocable invocable = (Invocable) engine;
+
+        Product product = new Product();
+        product.setName("Rubber");
+        product.setPrice(1.99);
+        product.setStock(1037);
+
+        Object result = invocable.invokeFunction("getValueOfGoods", product);
+        System.out.println(result);
+    }
+
+}
diff --git a/src/com/winterbe/java8/Product.java b/src/com/winterbe/java8/Product.java
@@ -0,0 +1,34 @@
+package com.winterbe.java8;
+
+/**
+ * @author Benjamin Winterberg
+ */
+public class Product {
+    private String name;
+    private double price;
+    private int stock;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public double getPrice() {
+        return price;
+    }
+
+    public void setPrice(double price) {
+        this.price = price;
+    }
+
+    public int getStock() {
+        return stock;
+    }
+
+    public void setStock(int stock) {
+        this.stock = stock;
+    }
+}
