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/*******************************************************************************
 * Copyright (c) 2006 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   David Knibb               initial implementation      
 *   Matthew Webster           Eclipse 3.2 changes
 *   Martin Lippert            minor changes and bugfixes     
 *******************************************************************************/

package org.eclipse.equinox.weaving.hooks;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;

import org.eclipse.equinox.weaving.adaptors.IAspectJAdaptor;
import org.eclipse.osgi.baseadaptor.bundlefile.BundleEntry;

public class AspectJBundleEntry extends BundleEntry {

    private final IAspectJAdaptor adaptor;

    private final URL bundleFileURL;

    private byte[] bytes;

    private final BundleEntry delegate;

    private final boolean dontWeave;

    private String name;

    public AspectJBundleEntry(final IAspectJAdaptor aspectjAdaptor,
            final BundleEntry delegate, final String name, final byte[] bytes,
            final URL url) {
        this(aspectjAdaptor, delegate, url, true);
        this.name = name;
        this.bytes = bytes;
    }

    public AspectJBundleEntry(final IAspectJAdaptor aspectjAdaptor,
            final BundleEntry delegate, final URL url, final boolean dontWeave) {
        this.adaptor = aspectjAdaptor;
        this.bundleFileURL = url;
        this.delegate = delegate;
        this.dontWeave = dontWeave;
    }

    public boolean dontWeave() {
        return dontWeave;
    }

    public IAspectJAdaptor getAdaptor() {
        return adaptor;
    }

    public URL getBundleFileURL() {
        return bundleFileURL;
    }

    public byte[] getBytes() throws IOException {
        if (bytes == null) return delegate.getBytes();
        return bytes;
    }

    public URL getFileURL() {
        if (bytes == null)
            return delegate.getFileURL();
        else
            return null;
    }

    public InputStream getInputStream() throws IOException {
        // this always returns the original stream of the delegate to
        // allow getResourceAsStream to be used even in the context of
        // caching with J9 class sharing
        //
        // class loading uses getBytes instead (where the caching is considered)
        return delegate.getInputStream();
    }

    public URL getLocalURL() {
        if (bytes == null)
            return delegate.getLocalURL();
        else
            return null;
    }

    public String getName() {
        if (bytes == null)
            return delegate.getName();
        else
            return name;
    }

    public long getSize() {
        if (delegate != null)
            return delegate.getSize();
        else
            return bytes.length;
    }

    public long getTime() {
        if (delegate != null)
            return delegate.getTime();
        else
            return 0;
    }

}

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