From e5b7380c874745c989d1816b8f552504f038e1bc Mon Sep 17 00:00:00 2001
From: lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68>
Date: Thu, 26 Sep 2013 20:33:20 +0000
Subject: 2.0 branch for possible maintenance release

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1526672 13f79535-47bb-0310-9956-ffa450edef68
---
 .../java/injection/FieldInjector.java              | 86 ++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 sca-java-2.x/branches/2.0/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/injection/FieldInjector.java

(limited to 'sca-java-2.x/branches/2.0/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/injection/FieldInjector.java')

diff --git a/sca-java-2.x/branches/2.0/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/injection/FieldInjector.java b/sca-java-2.x/branches/2.0/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/injection/FieldInjector.java
new file mode 100644
index 0000000000..4d97e72bd0
--- /dev/null
+++ b/sca-java-2.x/branches/2.0/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/injection/FieldInjector.java
@@ -0,0 +1,86 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.apache.tuscany.sca.implementation.java.injection;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Type;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+
+import org.apache.tuscany.sca.core.factory.ObjectCreationException;
+import org.apache.tuscany.sca.core.factory.ObjectFactory;
+
+/**
+ * Injects a value created by an {@link org.apache.tuscany.sca.core.factory.ObjectFactory} on a given field
+ *
+ * @version $Rev$ $Date$
+ */
+public class FieldInjector<T> implements Injector<T> {
+
+    private final Field field;
+
+    private final ObjectFactory<?> objectFactory;
+
+    /**
+     * Create an injector and have it use the given <code>ObjectFactory</code> to inject a value on the instance using
+     * the reflected <code>Field</code>
+     */
+    public FieldInjector(Field pField, ObjectFactory<?> objectFactory) {
+        field = pField;
+        // Allow privileged access to set accessibility. Requires ReflectPermission
+        // in security policy.
+        AccessController.doPrivileged(new PrivilegedAction<Object>() {
+            public Object run() {
+                field.setAccessible(true); // ignore Java accessibility
+                return null;
+            }
+        });
+        
+        this.objectFactory = objectFactory;
+    }
+
+    /**
+     * Inject a new value on the given instance
+     */
+    public void inject(T instance) throws ObjectCreationException {
+    	inject(instance, objectFactory.getInstance());
+    }
+    
+    public void inject(T instance, Object value) {
+        try {
+            field.set(instance, value);
+        } catch (IllegalAccessException e) {
+            throw new ObjectCreationException("Field is not accessible [" + field + "]", e);
+        }
+    }
+    
+    public Class<?> getType() {
+    	return field.getType();
+    }
+    
+	public Type getGenericType() {
+		return field.getGenericType();
+	}
+
+	public void injectNull(T instance) throws ObjectCreationException {
+		inject(instance, null);		
+	}
+
+
+}
-- 
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