/******************************************************************************
* Copyright (c) 2006, 2010 VMware Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Apache License v2.0 which accompanies this distribution.
* The Eclipse Public License is available at
* http://www.eclipse.org/legal/epl-v10.html and the Apache License v2.0
* is available at http://www.opensource.org/licenses/apache2.0.php.
* You may elect to redistribute this code under either of these licenses.
*
* Contributors:
* VMware Inc.
*****************************************************************************/
package org.eclipse.gemini.blueprint.extender.support.scanning;
import org.osgi.framework.Bundle;
/**
* Convenience scanner locating suitable Spring configurations inside an OSGi
* bundle. This interface can be implemented to customize Spring-DM default
* definition of a 'Spring-powered' bundle by using different locations or
* supplying defaults for bundles that do not provide a proper configuration.
*
* <p/> Additionally, non-XML configurations (for example annotation-based) can
* be plugged in. This would normally imply a custom application context creator
* as well.
*
* <p/><b>Note:</b>It is strongly recommended that the default locations (<tt>META-INF/spring/*.xml</tt>
* or <tt>Spring-Context</tt> manifest header) are supported (through chaining
* or by extending the default implementation) to avoid breaking bundles using
* them.
*
* <p/>This interface is intended for usage with the default
* {@link org.eclipse.gemini.blueprint.extender.OsgiApplicationContextCreator}
* implementation.
*
* @see org.eclipse.gemini.blueprint.extender.support.DefaultOsgiApplicationContextCreator
* @see org.eclipse.gemini.blueprint.extender.OsgiApplicationContextCreator
*
* @author Costin Leau
*/
public interface ConfigurationScanner {
/**
* Returns an array of existing Spring configuration locations (as Strings)
* for the given bundle. If no resource was found, an empty/null array
* should be returned.
*
* @param bundle non-null bundle intended for scanning
* @return Spring configuration locations
*/
String[] getConfigurations(Bundle bundle);
}