/*******************************************************************************
* Copyright (c) 2000, 2012 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdi.internal;
import java.io.DataInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.jdi.internal.jdwp.JdwpClassLoaderID;
import org.eclipse.jdi.internal.jdwp.JdwpCommandPacket;
import org.eclipse.jdi.internal.jdwp.JdwpID;
import org.eclipse.jdi.internal.jdwp.JdwpReplyPacket;
import com.sun.jdi.ClassLoaderReference;
import com.sun.jdi.ClassNotPreparedException;
import com.sun.jdi.ReferenceType;
/**
* this class implements the corresponding interfaces declared by the JDI
* specification. See the com.sun.jdi package for more information.
*
*/
public class ClassLoaderReferenceImpl extends ObjectReferenceImpl implements ClassLoaderReference {
/** JDWP Tag. */
public static final byte tag = JdwpID.CLASS_LOADER_TAG;
/**
* Creates new ClassLoaderReferenceImpl.
*/
public ClassLoaderReferenceImpl(VirtualMachineImpl vmImpl,
JdwpClassLoaderID classLoaderID) {
super("ClassLoaderReference", vmImpl, classLoaderID); //$NON-NLS-1$
}
/**
* @returns Value tag.
*/
@Override
public byte getTag() {
return tag;
}
/**
* @returns Returns a list of all loaded classes that were defined by this
* class loader.
*/
public List<ReferenceType> definedClasses() {
// Note that this information should not be cached.
List<ReferenceType> visibleClasses = visibleClasses();
List<ReferenceType> result = new ArrayList<ReferenceType>(visibleClasses.size());
Iterator<ReferenceType> iter = visibleClasses.iterator();
while (iter.hasNext()) {
try {
ReferenceType type = iter.next();
// Note that classLoader() is null for the bootstrap
// classloader.
if (type.classLoader() != null && type.classLoader().equals(this))
result.add(type);
} catch (ClassNotPreparedException e) {
continue;
}
}
return result;
}
/* (non-Javadoc)
* @see com.sun.jdi.ClassLoaderReference#visibleClasses()
*/
public List<ReferenceType> visibleClasses() {
// Note that this information should not be cached.
initJdwpRequest();
try {
JdwpReplyPacket replyPacket = requestVM(
JdwpCommandPacket.CLR_VISIBLE_CLASSES, this);
defaultReplyErrorHandler(replyPacket.errorCode());
DataInputStream replyData = replyPacket.dataInStream();
int nrOfElements = readInt("elements", replyData); //$NON-NLS-1$
List<ReferenceType> elements = new ArrayList<ReferenceType>(nrOfElements);
for (int i = 0; i < nrOfElements; i++) {
ReferenceTypeImpl elt = ReferenceTypeImpl.readWithTypeTag(this, replyData);
if (elt == null)
continue;
elements.add(elt);
}
return elements;
} catch (IOException e) {
defaultIOExceptionHandler(e);
return null;
} finally {
handledJdwpRequest();
}
}
/**
* @return Reads JDWP representation and returns new instance.
*/
public static ClassLoaderReferenceImpl read(MirrorImpl target,
DataInputStream in) throws IOException {
VirtualMachineImpl vmImpl = target.virtualMachineImpl();
JdwpClassLoaderID ID = new JdwpClassLoaderID(vmImpl);
ID.read(in);
if (target.fVerboseWriter != null)
target.fVerboseWriter.println("classLoaderReference", ID.value()); //$NON-NLS-1$
if (ID.isNull())
return null;
ClassLoaderReferenceImpl mirror = new ClassLoaderReferenceImpl(vmImpl,
ID);
return mirror;
}
}