ParameterProvider.java

/*
 * Copyright 2015 MovingBlocks
 *
 * Licensed 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.terasology.util.reflection;

import java.util.Optional;

/**
 * ParameterProvider provides objects of desired types. It is used by the SimpleClassFactory to obtain values to use for constructor parameters.
 * @author Immortius
 */
public interface ParameterProvider {

    /**
     * @param type The desired type
     * @param <T> The desired type
     * @return An optional with a value of the desired type, or empty if no such object is available
     */
    <T> Optional<T> get(Class<T> type);
}