/*
 * Copyright 2017, TeamDev Ltd. All rights reserved.
 *
 * Redistribution and use in source and/or binary forms, with or without
 * modification, must retain the above copyright notice and the following
 * disclaimer.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package io.spine.server.commandbus;

import com.google.common.base.Predicate;
import io.grpc.stub.StreamObserver;
import io.spine.base.Command;
import io.spine.envelope.CommandEnvelope;

import javax.annotation.Nullable;

import static com.google.common.base.Preconditions.checkNotNull;

/**
 * @author Dmytro Dashenkov
 */
final class MatchesCommandBusFilter implements Predicate<CommandEnvelope> {

    private final CommandBusFilter filter;
    private final StreamObserver<Command> responseObserver;

    MatchesCommandBusFilter(CommandBusFilter filter,
                            StreamObserver<Command> errorObserver) {
        this.filter = filter;
        this.responseObserver = errorObserver;
    }

    @Override
    public boolean apply(@Nullable CommandEnvelope input) {
        checkNotNull(input);
        final boolean result = filter.accept(input, responseObserver);
        return result;
    }
}

@@ -1302,16 +1302,236 @@
 l;%0A%0A/**%0A
+ * A predicate on %7B@link CommandEnvelope%7D matching it to a %7B@link CommandBusFilter%7D.%0A *%0A * %3Cp%3EThe filter receives the given %7B@link StreamObserver%7D for either acknowledging the Command%0A * posting or emitting an error.%0A *%0A
  * @auth

Document new predicate type.