org.drools.util.ClassLoaderUtil Maven / Gradle / Ivy
/**
* Copyright 2010 JBoss Inc
*
* 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.drools.util;
public class ClassLoaderUtil {
public static CompositeClassLoader getClassLoader(final ClassLoader[] classLoaders,
final Class< ? > cls,
final boolean enableCache) {
ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
ClassLoader currentClassLoader = (cls != null) ? cls.getClassLoader() : ClassLoaderUtil.class.getClassLoader();
ClassLoader systemClassLoader = ClassLoader.getSystemClassLoader();
CompositeClassLoader cl = new CompositeClassLoader( null );
if ( classLoaders != null && classLoaders.length > 0) {
// the user specified classloaders
for (ClassLoader classLoader : classLoaders ) {
if ( classLoader != null ) {
cl.addClassLoader( classLoader );
}
}
}
if ( currentClassLoader != null ) {
// the current classloader, typically from a drools-core or drools-compiler class
cl.addClassLoader( currentClassLoader );
}
if ( contextClassLoader != null ) {
// context classloader
cl.addClassLoader( contextClassLoader );
}
if ( systemClassLoader != null ) {
// system classloader
cl.addClassLoader( systemClassLoader );
}
cl.setCachingEnabled( enableCache );
return cl;
}
}