src/java.base/share/classes/jdk/internal/logger/LoggerWrapper.java

/*
 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package jdk.internal.logger;

import java.util.Objects;
import java.lang.System.Logger;
import sun.util.logging.PlatformLogger;

/**
 * An implementation of {@link Logger} that redirects all calls to a wrapped
 instance of Logger.
 *
 * @param <L> Type of the wrapped Logger: {@code Logger} or an
 *            extension of that interface.
 */
public class LoggerWrapper<L extends Logger> extends AbstractLoggerWrapper<L> {

    final L wrapped;
    final PlatformLogger.Bridge platformProxy;

    public LoggerWrapper(L wrapped) {
        this(Objects.requireNonNull(wrapped), (Void)null);
    }

    LoggerWrapper(L wrapped, Void unused) {
        this.wrapped = wrapped;
        this.platformProxy = (wrapped instanceof PlatformLogger.Bridge) ?
            (PlatformLogger.Bridge) wrapped : null;
    }

    @Override
    public final L wrapped() {
        return wrapped;
    }

    @Override
    public final PlatformLogger.Bridge platformProxy() {
        return platformProxy;
    }

}