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Micro Distribution of the Payara Project
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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2012 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
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 * file and include the License file at packager/legal/LICENSE.txt.
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 */

package org.glassfish.apf;

import org.glassfish.hk2.classmodel.reflect.Types;
import org.jvnet.hk2.annotations.Contract;

import java.util.Set;
import java.io.File;
import java.io.IOException;

/** 
 * This interface is responsible for scanning the binary location 
 * provided and provide each binary file through a pull interfaces
 *
 * @author Jerome Dochez
 */
@Contract
public interface Scanner {

    /**
     * Scan the archive file and gather a list of classes 
     * that should be processed for anntoations
     * @param archiveFile the archive file for scanning
     * @param bundleDesc the bundle descriptor associated with this archive
     * @param classLoader the classloader used to scan the annotation
     */
    public void process(File archiveFile, T bundleDesc,
            ClassLoader classLoader) throws IOException;

    
    /**
     * Returns a ClassLoader capable of loading classes from the 
     * underlying medium
     * @return a class loader capable of loading the classes
     */
    public ClassLoader getClassLoader();
    
    /**
     * Return a complete set of classes available from this location.
     * @return the complete set of classes 
     */
    public Set getElements();
    
    /**
     * Sometimes, annotations processing requires more than a single class, 
     * especially when such classes end up being a Java Component (Java Beans, 
     * Java EE). The implementation returned from the getComponent will be 
     * responsible for defining the complete view of this component starting 
     * from it's implementation class.
     * @param componentImpl class of the component.
     */
    public ComponentInfo getComponentInfo(Class componentImpl);

    /**
     * Return the types information for this module
     * @return types the archive resulting types
     */
    public Types getTypes();
    
}