Added JNDI example.

git-svn-id: https://google-guice.googlecode.com/svn/trunk@234 d779f126-a31b-0410-b53b-1d3aecad763e
diff --git a/test/com/google/inject/example/JndiProvider.java b/test/com/google/inject/example/JndiProvider.java
new file mode 100644
index 0000000..e377caa
--- /dev/null
+++ b/test/com/google/inject/example/JndiProvider.java
@@ -0,0 +1,52 @@
+/**
+ * Copyright (C) 2006 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.inject.example;
+
+import com.google.inject.Inject;
+import com.google.inject.Provider;
+import javax.naming.Context;
+import javax.naming.NamingException;
+
+class JndiProvider<T> implements Provider<T> {
+
+  @Inject Context context;
+  final String name;
+  final Class<T> type;
+
+  JndiProvider(Class<T> type, String name) {
+    this.name = name;
+    this.type = type;
+  }
+
+  public T get() {
+    try {
+      return type.cast(context.lookup(name));
+    }
+    catch (NamingException e) {
+      throw new RuntimeException(e);
+    }
+  }
+
+  /**
+   * Creates a JNDI provider for the given
+   * type and name.
+   */
+  static <T> Provider<T> fromJndi(
+      Class<T> type, String name) {
+    return new JndiProvider<T>(type, name);
+  }
+}
diff --git a/test/com/google/inject/example/JndiProviderClient.java b/test/com/google/inject/example/JndiProviderClient.java
new file mode 100644
index 0000000..d6dac6e
--- /dev/null
+++ b/test/com/google/inject/example/JndiProviderClient.java
@@ -0,0 +1,42 @@
+/**
+ * Copyright (C) 2006 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.inject.example;
+
+import com.google.inject.AbstractModule;
+import com.google.inject.Container;
+import com.google.inject.CreationException;
+import com.google.inject.Guice;
+import static com.google.inject.example.JndiProvider.fromJndi;
+import javax.naming.Context;
+import javax.naming.InitialContext;
+import javax.sql.DataSource;
+
+class JndiProviderClient {
+
+  public static void main(String[] args) throws CreationException {
+    Container container = Guice.createContainer(new AbstractModule() {
+      protected void configure() {
+// Bind Context to the default InitialContext.
+bind(Context.class).to(InitialContext.class);
+
+// Bind to DataSource from JNDI.
+bind(DataSource.class)
+    .toProvider(fromJndi(DataSource.class, "..."));
+      }
+    });
+  }
+}