/******************************************************************************
* 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 java.util.Enumeration;
import org.eclipse.gemini.blueprint.extender.support.internal.ConfigUtils;
import org.eclipse.gemini.blueprint.io.OsgiBundleResource;
import org.osgi.framework.Bundle;
import org.springframework.util.ObjectUtils;
/**
* Default implementation of {@link ConfigurationScanner} interface.
*
* <p/>Supports <tt>Spring-Context</tt> manifest header and
* <tt>META-INF/spring/*.xml</tt>.
*
* @author Costin Leau
*
*/
public class DefaultConfigurationScanner implements ConfigurationScanner {
private static final String CONTEXT_DIR = "/META-INF/spring/";
private static final String CONTEXT_FILES = "*.xml";
/** Default configuration location */
public static final String DEFAULT_CONFIG = OsgiBundleResource.BUNDLE_URL_PREFIX + CONTEXT_DIR + CONTEXT_FILES;
public String[] getConfigurations(Bundle bundle) {
String[] locations = ConfigUtils.getHeaderLocations(bundle.getHeaders());
// if no location is specified in the header, try the defaults
if (ObjectUtils.isEmpty(locations)) {
// check the default locations if the manifest doesn't provide any info
Enumeration defaultConfig = bundle.findEntries(CONTEXT_DIR, CONTEXT_FILES, false);
if (defaultConfig != null && defaultConfig.hasMoreElements()) {
return new String[] { DEFAULT_CONFIG };
}
else {
return new String[0];
}
}
else {
return locations;
}
}
}