Package org.apache.xbean.finder

Source Code of org.apache.xbean.finder.BundleAnnotationFinder$AnnotationFindingCallback

/*
* 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.xbean.finder;

import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.zip.ZipEntry;

import org.apache.xbean.osgi.bundle.util.BundleResourceFinder;
import org.apache.xbean.osgi.bundle.util.BundleUtils;
import org.apache.xbean.osgi.bundle.util.ResourceDiscoveryFilter;
import org.osgi.framework.Bundle;
import org.osgi.service.packageadmin.PackageAdmin;

/**
* @version $Rev: 1160131 $ $Date: 2011-08-22 00:07:20 -0700 (Mon, 22 Aug 2011) $
*/
public class BundleAnnotationFinder extends AbstractFinder {
    private final Bundle bundle;
    private final Set<String> paths;

    public BundleAnnotationFinder(PackageAdmin packageAdmin, Bundle bundle) throws Exception {
        this(packageAdmin, bundle, BundleResourceFinder.FULL_DISCOVERY_FILTER);
    }

    public BundleAnnotationFinder(PackageAdmin packageAdmin, Bundle bundle, ResourceDiscoveryFilter discoveryFilter) throws Exception {
        this(packageAdmin, bundle, discoveryFilter, Collections.<String>emptySet());
    }

    public BundleAnnotationFinder(PackageAdmin packageAdmin, Bundle bundle, ResourceDiscoveryFilter discoveryFilter, Set<String> paths) throws Exception {
        this.bundle = BundleUtils.unwrapBundle(bundle);
        BundleResourceFinder bundleResourceFinder = new BundleResourceFinder(packageAdmin, this.bundle, "", ".class", discoveryFilter);
        bundleResourceFinder.find(new AnnotationFindingCallback());
        this.paths = paths;
    }

    @Override
    protected URL getResource(String s) {
        return bundle.getResource(s);
    }

    @Override
    protected Class<?> loadClass(String s) throws ClassNotFoundException {
        return bundle.loadClass(s);
    }

    @Override
    public List<String> getAnnotatedClassNames() {
        List<String> classNames = new ArrayList<String>(originalInfos.size());
        for (Map.Entry<String, ClassInfo> entry: originalInfos.entrySet()) {
            if (paths.contains(entry.getValue().getPath())) {
                classNames.add(entry.getKey());
            }
        }
        return classNames;
    }

    private class AnnotationFindingCallback implements BundleResourceFinder.ResourceFinderCallback {
     
        public boolean foundInDirectory(Bundle bundle, String baseDir, URL url) throws Exception {
            InputStream in = url.openStream();
            try {
                readClassDef(in, baseDir);
            } finally {
                in.close();
            }
            return true;
        }

      
        public boolean foundInJar(Bundle bundle, String jarName, ZipEntry entry, InputStream in) throws Exception {
            readClassDef(in, jarName);
            return true;
        }
    }

}
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