/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.webbeans.corespi.scanner.xbean;
import org.apache.xbean.finder.archive.Archive;
import org.apache.xbean.finder.archive.ClassesArchive;
import org.apache.xbean.finder.archive.ClasspathArchive;
import org.apache.xbean.finder.archive.CompositeArchive;
import org.apache.xbean.finder.archive.FilteredArchive;
import org.apache.xbean.finder.filter.Filter;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* this delegate pattern is interesting
* because we will be able to add
* some exclusion config through it
* using Filter + FilterArchive
*/
public class CdiArchive implements Archive
{
/**
* key: URL#toExternalForm of the scanned classpath entry
* value: small data container with URL and class names
*/
private final Map<String, FoundClasses> classesByUrl = new HashMap<String, FoundClasses>();
private final Set<String> classes = new HashSet<String>();
private final Archive delegate;
public CdiArchive(final ClassLoader loader, final Iterable<URL> urls)
{
final Collection<Archive> archives = new ArrayList<Archive>();
for (final URL url : urls)
{
final List<String> classes = new ArrayList<String>();
final Archive archive = new FilteredArchive(ClasspathArchive.archive(loader, url), new Filter()
{
@Override
public boolean accept(final String name)
{
classes.add(name);
CdiArchive.this.classes.add(name);
return true;
}
});
classesByUrl.put(url.toExternalForm(), new FoundClasses(url, classes));
archives.add(archive);
}
delegate = new CompositeArchive(archives);
}
public CdiArchive(final Collection<Class<?>> classList)
{
delegate = new FilteredArchive(new ClassesArchive(classList), new Filter()
{
@Override
public boolean accept(final String name)
{
classes.add(name);
return true;
}
});
}
public Set<String> getClasses()
{
return classes;
}
public Map<String, FoundClasses> classesByUrl()
{
return classesByUrl;
}
@Override
public InputStream getBytecode(final String className) throws IOException, ClassNotFoundException
{
return delegate.getBytecode(className);
}
@Override
public Class<?> loadClass(final String className) throws ClassNotFoundException
{
return delegate.loadClass(className);
}
@Override
public Iterator<Entry> iterator()
{
return delegate.iterator();
}
public final class FoundClasses
{
private URL url;
private Collection<String> classNames;
public FoundClasses(URL url, Collection<String> classNames)
{
this.url = url;
this.classNames = classNames;
}
public URL getUrl()
{
return url;
}
public Collection<String> getClassNames()
{
return classNames;
}
}
}