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/***********************************************************************
* IBM Confidential
* OCO Source Materials
*
* (C) Copyright IBM Corp. 2006, 2014
*
* The source code for this program is not published or otherwise divested
* of its trade secrets, irrespective of what has been deposited with the
* U.S. Copyright Office.
************************************************************************/
package org.eclipse.osgi.internal.cds;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import org.eclipse.osgi.storage.bundlefile.BundleEntry;
/**
* A bundle entry for a class that is found in the shared classes cache
*/
public class CDSBundleEntry extends BundleEntry {
String path;
byte[] classbytes;
BundleEntry wrapped;
/**
* The constructor
* @param path the path to the class file
* @param classbytes the magic cookie bytes for the class in the shared cache
* @param wrapped the actual bundleEntry where the class comes from
*/
public CDSBundleEntry(String path, byte[] classbytes, BundleEntry wrapped) {
super();
this.path = path;
this.classbytes = classbytes;
this.wrapped = wrapped;
}
/*
* (non-Javadoc)
* @see org.eclipse.osgi.baseadaptor.bundlefile.BundleEntry#getFileURL()
* uses the wrapped bundle file to get the actual file url to the content of
* the class on disk.
*
* This should is likely never to be called.
*/
public URL getFileURL() {
return wrapped.getFileURL();
}
/*
* (non-Javadoc)
* @see org.eclipse.osgi.baseadaptor.bundlefile.BundleEntry#getInputStream()
* wraps the classbytes into a ByteArrayInputStream. This should not be used
* by classloading.
*/
public InputStream getInputStream() throws IOException {
// someone is trying to get the real bytes of the class file!!
// just return the entry from the wrapped file instead of the magic cookie
return wrapped.getInputStream();
}
/*
* (non-Javadoc)
* @see org.eclipse.osgi.baseadaptor.bundlefile.BundleEntry#getBytes()
* if classbytes is not null, it returns the magic cookie for the shared class. This is used to define
* the class during class loading.
* if classbytes is null, it gets the contents from actual BundleEntry and caches it in classbytes.
*/
public byte[] getBytes() throws IOException {
if (classbytes == null) {
classbytes = wrapped.getBytes();
}
return classbytes;
}
/*
* (non-Javadoc)
* @see org.eclipse.osgi.baseadaptor.bundlefile.BundleEntry#getLocalURL()
* uses the wrapped bundle file to get the actual local url to the content of
* the class on disk.
*
* This should is likely never to be called.
*/
public URL getLocalURL() {
return wrapped.getLocalURL();
}
public String getName() {
return path;
}
public long getSize() {
return wrapped.getSize();
}
public long getTime() {
return wrapped.getTime();
}
}
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