broker-plugins/access-control/src/main/java/org/apache/qpid/server/security/access/config/DynamicRule.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.qpid.server.security.access.config;

import java.util.Objects;

import javax.security.auth.Subject;

public interface DynamicRule
{
    boolean matches(Subject subject);

    default DynamicRule and(DynamicRule other)
    {
        Objects.requireNonNull(other);

        return new DynamicRule()
        {
            @Override
            public boolean matches(final Subject subject)
            {
                return DynamicRule.this.matches(subject) && other.matches(subject);
            }

            @Override
            public String toString()
            {
                return String.format("%s and %s", DynamicRule.this.toString(), other.toString());
            }
        };
    }
}