diff src/main/java/de/intevation/utils/Resources.java @ 10:eb093385ff7e

Added Resources.java. This file is important as it make the EntitManager available through @Inject in other classes.
author Torsten Irländer <torsten.irlaender@intevation.de>
date Thu, 18 Apr 2013 16:03:10 +0200
parents
children ad22a59aa5d7
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/java/de/intevation/utils/Resources.java	Thu Apr 18 16:03:10 2013 +0200
@@ -0,0 +1,58 @@
+/*
+ * JBoss, Home of Professional Open Source
+ * Copyright 2012, Red Hat, Inc. and/or its affiliates, and individual
+ * contributors by the @authors tag. See the copyright.txt in the 
+ * distribution for a full listing of individual contributors.
+ *
+ * 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 org.jboss.as.quickstarts.kitchensink.util;
+
+import java.util.logging.Logger;
+
+import javax.enterprise.context.RequestScoped;
+import javax.enterprise.inject.Produces;
+import javax.enterprise.inject.spi.InjectionPoint;
+import javax.faces.context.FacesContext;
+import javax.persistence.EntityManager;
+import javax.persistence.PersistenceContext;
+
+/**
+ * This class uses CDI to alias Java EE resources, such as the persistence context, to CDI beans
+ * 
+ * <p>
+ * Example injection on a managed bean field:
+ * </p>
+ * 
+ * <pre>
+ * &#064;Inject
+ * private EntityManager em;
+ * </pre>
+ */
+public class Resources {
+    // use @SuppressWarnings to tell IDE to ignore warnings about field not being referenced directly
+    @SuppressWarnings("unused")
+    @Produces
+    @PersistenceContext
+    private EntityManager em;
+
+    @Produces
+    public Logger produceLog(InjectionPoint injectionPoint) {
+        return Logger.getLogger(injectionPoint.getMember().getDeclaringClass().getName());
+    }
+
+    @Produces
+    @RequestScoped
+    public FacesContext produceFacesContext() {
+        return FacesContext.getCurrentInstance();
+    }
+
+}
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