liquibase.osgi.OSGIPackageScanClassResolver Maven / Gradle / Ivy
/**
* Licensed under same license as rest of project (Apache 2.0).
*
* History:
* - github.com/samhendley - 1/31/12 : initial implementation, tested in karaf.
*/
package liquibase.osgi;
import liquibase.servicelocator.DefaultPackageScanClassResolver;
import liquibase.servicelocator.PackageScanFilter;
import org.osgi.framework.Bundle;
import java.util.Enumeration;
import java.util.Set;
/**
* Package scan resolver that works with OSGI frameworks (in theory all of them)
*/
public class OSGIPackageScanClassResolver extends DefaultPackageScanClassResolver {
private final Bundle bundle;
public OSGIPackageScanClassResolver(Bundle bundle){
this.bundle = bundle;
}
@Override
protected void find(PackageScanFilter test, String packageName, Set> classes) {
packageName = packageName.replace('.', '/');
Enumeration names = bundle.getEntryPaths(packageName);
while (names != null && names.hasMoreElements()) {
String name = (String) names.nextElement();
if(name.endsWith("/")){
find(test, name, classes);
}
else if(name.endsWith(".class")) {
try{
// strip off .class and liquibase/database/Abstract.class -> liquibase.database.Abstract
String fixedName = name.substring(0, name.indexOf('.')).replace('/','.');
Class klass = bundle.loadClass(fixedName);
if (test.matches(klass)) {
classes.add(klass);
}
}catch(Exception cce){
log.debug("Cant load class: " + cce.getMessage());
}
}
}
}
}