1 files changed, 76 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/java-M1-20060522/java/sca/core/src/main/java/org/apache/tuscany/core/injection/PojoObjectFactory.java b/sca-java-1.x/tags/java-M1-20060522/java/sca/core/src/main/java/org/apache/tuscany/core/injection/PojoObjectFactory.java
new file mode 100644
index 0000000000..fac8248b0c
--- /dev/null
+++ b/sca-java-1.x/tags/java-M1-20060522/java/sca/core/src/main/java/org/apache/tuscany/core/injection/PojoObjectFactory.java
@@ -0,0 +1,76 @@
+/**
+ *
+ *  Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
+ *
+ *  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.apache.tuscany.core.injection;
+
+import org.apache.tuscany.core.builder.ObjectFactory;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Creates new instances of a Java class, calling a given set of injectors to configure the instance
+ * 
+ * @version $Rev$ $Date$
+ * @see Injector
+ */
+public class PojoObjectFactory<T> implements ObjectFactory<T> {
+
+    private static final ObjectFactory[] NO_INIT_PARAM = {};
+
+    private static final List<Injector> NO_SETTER_PARAM = Collections.emptyList();
+
+    private final Constructor<T> ctr;
+
+    private final ObjectFactory<?>[] initParamsArray;
+
+    private final List<Injector> setters;
+
+    public PojoObjectFactory(Constructor<T> ctr, List<ObjectFactory> initParams, List<Injector> setters) {
+        this.ctr = ctr;
+        if (initParams != null && initParams.size() > 0) {
+            initParamsArray = initParams.toArray(new ObjectFactory[initParams.size()]);
+        } else {
+            initParamsArray = NO_INIT_PARAM;
+        }
+        this.setters = setters != null ? setters : NO_SETTER_PARAM;
+    }
+
+    public T getInstance() throws ObjectCreationException {
+        Object[] initargs = new Object[initParamsArray.length];
+        // create the constructor arg array
+        for (int i = 0; i < initParamsArray.length; i++) {
+            ObjectFactory<?> objectFactory = initParamsArray[i];
+            initargs[i] = objectFactory.getInstance();
+        }
+        try {
+            T instance = ctr.newInstance(initargs);
+            // interate through the injectors and inject the instance
+            for (Injector<T> setter : setters) {
+                setter.inject(instance);
+            }
+            return instance;
+        } catch (InstantiationException e) {
+            throw new AssertionError("Class is not instantiable [" + ctr.getDeclaringClass().getName() + "]");
+        } catch (IllegalAccessException e) {
+            throw new AssertionError("Constructor is not accessible [" + ctr + "]");
+        } catch (InvocationTargetException e) {
+            throw new ObjectCreationException("Exception thrown by constructor [" + ctr + "]", e);
+        }
+    }
+}