/******************************************************************************
* 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;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.eclipse.gemini.blueprint.context.DelegatedExecutionOsgiBundleApplicationContext;
import org.eclipse.gemini.blueprint.context.support.OsgiBundleXmlApplicationContext;
import org.eclipse.gemini.blueprint.extender.OsgiApplicationContextCreator;
import org.eclipse.gemini.blueprint.extender.support.scanning.ConfigurationScanner;
import org.eclipse.gemini.blueprint.extender.support.scanning.DefaultConfigurationScanner;
import org.eclipse.gemini.blueprint.util.OsgiStringUtils;
import org.springframework.util.Assert;
import org.springframework.util.ObjectUtils;
/**
* Default {@link OsgiApplicationContextCreator} implementation.
*
* <p/> Creates an {@link OsgiBundleXmlApplicationContext} instance using the
* default locations (<tt>Spring-Context</tt> manifest header or
* <tt>META-INF/spring/*.xml</tt>) if available, null otherwise.
*
* <p/> Additionally, this implementation allows custom locations to be
* specified through {@link ConfigurationScanner} interface.
*
* @see ConfigurationScanner
* @author Costin Leau
*
*/
public class DefaultOsgiApplicationContextCreator implements OsgiApplicationContextCreator {
/** logger */
private static final Log log = LogFactory.getLog(DefaultOsgiApplicationContextCreator.class);
private ConfigurationScanner configurationScanner = new DefaultConfigurationScanner();
public DelegatedExecutionOsgiBundleApplicationContext createApplicationContext(BundleContext bundleContext)
throws Exception {
Bundle bundle = bundleContext.getBundle();
ApplicationContextConfiguration config = new ApplicationContextConfiguration(bundle, configurationScanner);
if (log.isTraceEnabled())
log.trace("Created configuration " + config + " for bundle "
+ OsgiStringUtils.nullSafeNameAndSymName(bundle));
// it's not a spring bundle, ignore it
if (!config.isSpringPoweredBundle()) {
return null;
}
log.info("Discovered configurations " + ObjectUtils.nullSafeToString(config.getConfigurationLocations())
+ " in bundle [" + OsgiStringUtils.nullSafeNameAndSymName(bundle) + "]");
DelegatedExecutionOsgiBundleApplicationContext sdoac = new OsgiBundleXmlApplicationContext(
config.getConfigurationLocations());
sdoac.setBundleContext(bundleContext);
sdoac.setPublishContextAsService(config.isPublishContextAsService());
return sdoac;
}
/**
* Sets the configurationScanner used by this creator.
*
* @param configurationScanner The configurationScanner to set.
*/
public void setConfigurationScanner(ConfigurationScanner configurationScanner) {
Assert.notNull(configurationScanner);
this.configurationScanner = configurationScanner;
}
}