core/api/src/main/java/org/apache/myfaces/extensions/cdi/core/api/Aggregatable.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.myfaces.extensions.cdi.core.api;

/**
 * Allows to collect instances and create an aggregated instance for them.
 */
public interface Aggregatable<T>
{
    /**
     * Add an instance which should be aggregated with the existing instances
     * @param t instance to add
     */
    void add(T t);

    /**
     * Creates an aggregated instance for the added instances
     * @return instance which aggregates the added instances
     */
    T create();
}