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diff --git a/org.argeo.cms.ui.workbench/src/org/argeo/eclipse/spring/SpringExtensionFactory.java b/org.argeo.cms.ui.workbench/src/org/argeo/eclipse/spring/SpringExtensionFactory.java
deleted file mode 100644
index ab1e8caf6..000000000
--- a/org.argeo.cms.ui.workbench/src/org/argeo/eclipse/spring/SpringExtensionFactory.java
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
- * Copyright (C) 2007-2012 Argeo GmbH
- *
- * 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.argeo.eclipse.spring;
-
-import org.argeo.eclipse.ui.EclipseUiException;
-import org.eclipse.core.runtime.CoreException;
-import org.eclipse.core.runtime.IConfigurationElement;
-import org.eclipse.core.runtime.IExecutableExtension;
-import org.eclipse.core.runtime.IExecutableExtensionFactory;
-import org.eclipse.core.runtime.IExtension;
-import org.springframework.context.ApplicationContext;
-
-/**
- * The Spring Extension Factory builds a bridge between the Eclipse Extension
- * Registry and the Spring Framework (especially Spring Dynamic Modules).
- * 
- * It allows you to define your extension as a spring bean within the spring
- * application context of your bundle. If you would like to use this bean as an
- * instance of an extension (an Eclipse RCP view, for example) you define the
- * extension with this spring extension factory as the class to be created.
- * 
- * To let the spring extension factory pick the right bean from your application
- * context you need to set the bean id to the same value as the id of the view
- * within the view definition, for example. This is important if your extension
- * definition contains more than one element, where each element has its own id.
- * 
- * If the extension definition elements themselves have no id attribute the
- * spring extension factory uses the id of the extension itself to identify the
- * bean.
- * 
- * original code from: <a href=
- * "http://martinlippert.blogspot.com/2008/10/new-version-of-spring-extension-factory.html"
- * >Blog entry</a>
- * 
- * @author Martin Lippert
- * @author mbaudier
- */
-public class SpringExtensionFactory implements IExecutableExtensionFactory,
-		IExecutableExtension {
-
-	private Object bean;
-
-	public Object create() throws CoreException {
-		if (bean == null)
-			throw new EclipseUiException("No underlying bean for extension");
-		return bean;
-	}
-
-	public void setInitializationData(IConfigurationElement config,
-			String propertyName, Object data) throws CoreException {
-		String bundleSymbolicName = config.getContributor().getName();
-		ApplicationContext applicationContext = ApplicationContextTracker
-				.getApplicationContext(bundleSymbolicName);
-		if (applicationContext == null)
-			throw new EclipseUiException(
-					"Cannot find application context for bundle "
-							+ bundleSymbolicName);
-
-		String beanName = getBeanName(data, config);
-		if (beanName == null)
-			throw new EclipseUiException("Cannot find bean name for extension "
-					+ config);
-
-		if (!applicationContext.containsBean(beanName)) {
-			if (beanName.startsWith(bundleSymbolicName))
-				beanName = beanName.substring(bundleSymbolicName.length() + 1);
-		}
-
-		if (!applicationContext.containsBean(beanName))
-			throw new EclipseUiException("No bean with name '" + beanName + "'");
-
-		this.bean = applicationContext.getBean(beanName);
-		if (this.bean instanceof IExecutableExtension) {
-			((IExecutableExtension) this.bean).setInitializationData(config,
-					propertyName, data);
-		}
-	}
-
-	private String getBeanName(Object data, IConfigurationElement config) {
-
-		// try the specific bean id the extension defines
-		if (data != null && data.toString().length() > 0) {
-			return data.toString();
-		}
-
-		// try the id of the config element
-		if (config.getAttribute("id") != null) {
-			return config.getAttribute("id");
-		}
-
-		// try the id of the extension element itself
-		if (config.getParent() != null
-				&& config.getParent() instanceof IExtension) {
-			IExtension extensionDefinition = (IExtension) config.getParent();
-			return extensionDefinition.getSimpleIdentifier();
-		}
-
-		return null;
-	}
-}