# HG changeset patch
# User Jaroslav Tulach <jtulach@netbeans.org>
# Date 1213430024 -7200
# Node ID ab11b91730892e7ee029ee50164f4eb69b76797e
# Parent  d098b8e4de15892ea3ff6d01cd5802aeb57bdbbd
Showing use of service loader

diff -r d098b8e4de15 -r ab11b9173089 samples/componentinjection/src/org/apidesign/component/InjectionViaServiceLoader.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/componentinjection/src/org/apidesign/component/InjectionViaServiceLoader.java	Sat Jun 14 09:53:44 2008 +0200
@@ -0,0 +1,22 @@
+package org.apidesign.component;
+
+import java.util.Collection;
+import java.util.ServiceLoader;
+import org.openide.util.Lookup;
+
+public class InjectionViaServiceLoader {
+    private InjectionViaServiceLoader() {
+    }
+    
+    // BEGIN: lookup.query.serviceloader
+    public static InjectionSlot singleSlot() {
+        // get one implementation
+        return ServiceLoader.load(InjectionSlot.class).iterator().next();
+    }
+    
+    public static Iterable<? extends InjectionSlot> multiSlot() {
+        // get all registered implementations
+        return ServiceLoader.load(InjectionSlot.class);
+    }
+    // END: lookup.query.serviceloader
+}
diff -r d098b8e4de15 -r ab11b9173089 samples/componentinjection/test/org/apidesign/component/InjectionViaServiceLoaderTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/componentinjection/test/org/apidesign/component/InjectionViaServiceLoaderTest.java	Sat Jun 14 09:53:44 2008 +0200
@@ -0,0 +1,46 @@
+package org.apidesign.component;
+
+import java.util.Iterator;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.netbeans.junit.MockServices;
+import static org.junit.Assert.*;
+
+// BEGIN: lookup.mockservices.serviceloader
+public class InjectionViaServiceLoaderTest {
+    public InjectionViaServiceLoaderTest() {
+    }
+
+    @BeforeClass
+    public static void setUpClass() throws Exception {
+        // this is a support for "dynamic" registration of any class
+        // into the global pool of Lookup.getDefault() and java.util.ServiceLoader
+        // either in @BeforeClass or @Before register 
+        // classes of the mock instances that you want your code 
+        // to find
+        MockServices.setServices(ImplOne.class, ImplTwo.class);
+    }
+
+    @Test
+    public void singleSlot() {
+        InjectionSlot result = InjectionViaServiceLoader.singleSlot();
+        assertNotNull("Some result found", result);
+        assertEquals("The first is ImplOne", ImplOne.class, result.getClass());
+    }
+
+    @Test
+    public void multiSlot() {
+        Iterator<? extends InjectionSlot> it = InjectionViaServiceLoader.multiSlot().iterator();
+        assertTrue("Has at least one", it.hasNext());
+        assertEquals("The first is ImplOne", ImplOne.class, it.next().getClass());
+        assertTrue("Has two", it.hasNext());
+        assertEquals("The second is ImplTwo", ImplTwo.class, it.next().getClass());
+        assertFalse("No other instance registered", it.hasNext());
+    }
+
+    public static final class ImplOne extends InjectionSlot {
+    }
+    public static final class ImplTwo extends InjectionSlot {
+    }
+}
+// BEGIN: lookup.mockservices.serviceloader