com.speedment.runtime.core.internal.component.ManagerComponentImpl Maven / Gradle / Ivy

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A Speedment bundle that shades all dependencies into one jar. This is useful when deploying an application on a server.

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/*
 *
 * Copyright (c) 2006-2019, Speedment, Inc. All Rights Reserved.
 *
 * 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 com.speedment.runtime.core.internal.component;

import com.speedment.runtime.core.component.ManagerComponent;
import com.speedment.runtime.core.exception.SpeedmentException;
import com.speedment.runtime.core.manager.Manager;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.stream.Stream;

import static java.util.Objects.requireNonNull;

/**
 * Default implementation of the {@link ManagerComponent}-interface.
 * 
 * @author Emil Forslund
 */
public final class ManagerComponentImpl implements ManagerComponent {

    private final Map, Manager> managersByEntity;

    public ManagerComponentImpl() {
        managersByEntity = new ConcurrentHashMap<>();
    }

    @Override
    public  void put(Manager manager) {
        requireNonNull(manager);
        managersByEntity.put(manager.getEntityClass(), manager);
    }

    @Override
    @SuppressWarnings("unchecked")
    public  Manager managerOf(Class entityClass) 
            throws SpeedmentException {
        
        requireNonNull(entityClass);
        
        @SuppressWarnings("unchecked")
        final Manager manager = (Manager) 
            managersByEntity.get(entityClass);
        
        if (manager == null) {
            throw new SpeedmentException(
                "No manager exists for " + entityClass
            );
        }
        
        return manager;
    }

    @Override
    public Stream> stream() {
        return managersByEntity.values().stream();
    }
}