From 1af0027ee7609eac4600da724157eaef9099650e Mon Sep 17 00:00:00 2001
From: Andrey Breslav <Andrey.Breslav@jetbrains.com>
Date: Fri, 19 Nov 2010 12:57:12 +0300
Subject: [PATCH] Factories

---
 examples/src/AnonymousObjects.jetl |  2 ++
 examples/src/Factories.jetl        | 27 ++++++++++++++++++++-------
 2 files changed, 22 insertions(+), 7 deletions(-)

diff --git a/examples/src/AnonymousObjects.jetl b/examples/src/AnonymousObjects.jetl
index 1419ef768c1..0f844cf66df 100644
--- a/examples/src/AnonymousObjects.jetl
+++ b/examples/src/AnonymousObjects.jetl
@@ -18,4 +18,6 @@ val GOD = object {
   fun sendMessage(message : GodMEssage) = throw new RuntimeException(message.name)
 };
 
+
+// Groovy like syntax: too many things to assume
 addMouseListener([mouseClicked : {e => doFoo()}]);
diff --git a/examples/src/Factories.jetl b/examples/src/Factories.jetl
index 0ab00bd1b0f..27102c68250 100644
--- a/examples/src/Factories.jetl
+++ b/examples/src/Factories.jetl
@@ -1,13 +1,26 @@
-class ConcreteClass {
+class Foo(bar : Bar) {
 
-  this() {}
+} static {
+  private val cache = HashMap<Bar, Foo>()
 
+  Foo() {
+    return Foo(null);
+  }
+
+  Foo(bar : Bar) {
+    if (bar in cache.keys) return cache[bar]
+    val newFoo = this(bar) // calls the primary constructor
+    cahce[bar] = newFoo
+    return newFoo
+  }
 }
 
-// Implicitly generated a factory for ConcreteClass with a no-argument factory method
+// To create an object of Foo
+val foo = Foo()
+or
+val foo = Foo(Bar())
 
-interface class IFooBarInterface {
-  new () {  }
-}
+// Subclass (Foo must be marked as extendable/open, i.e. ont sealed)
+class FooSub(S : String) : Foo() { // Delegates to Foo created as a result of the factory method Foo()
 
-factory
\ No newline at end of file
+}
\ No newline at end of file