/*
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 *  Copyright 2019, Red Hat, Inc., and individual contributors
 *  as indicated by the @author tags. See the copyright.txt file in the
 *  distribution for a full listing of individual contributors.
 *
 *  This is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU Lesser General Public License as
 *  published by the Free Software Foundation; either version 2.1 of
 *  the License, or (at your option) any later version.
 *
 *  This software is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this software; if not, write to the Free
 *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 *  02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.jboss.as.test.integration.jpa.mockprovider.skipquerydetach;

import java.lang.instrument.IllegalClassFormatException;
import java.security.ProtectionDomain;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

import javax.persistence.spi.ClassTransformer;

/**
 * TestClassTransformer
 *
 * @author Scott Marlow
 */
public class TestClassTransformer implements ClassTransformer {

    // track class names that would of been transformed of this class was capable of doing so.
    private static final List<String> transformedClasses = Collections.synchronizedList(new ArrayList<String>());

    @Override
    public byte[] transform(ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer) throws IllegalClassFormatException {
        transformedClasses.add(className);
        return classfileBuffer;
    }

    public static Collection getTransformedClasses() {
        return transformedClasses;
    }

    public static void clearTransformedClasses() {
        transformedClasses.clear();
    }
}
