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A Speedment bundle that shades all dependencies into one jar. This is
useful when deploying an application on a server.
/**
*
* Copyright (c) 2006-2017, 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.util;
import java.util.Map;
import java.util.stream.Stream;
/**
* A generic Class mapper interface. I.e. a mapper that can associate a class to
* an implementation of that class. Often, an interface is used as class key and
* then a concrete implementing class is used as an association to that
* interface. This creates a pluggable architecture framework.
*
* @param the base type
*
* @author Per Minborg
* @since 2.2.0
*/
public interface ClassMapper {
/**
* Adds a mapping for an item.
*
* @param item to add
* @return the previous mapping that existed, or null
*/
V put(V item);
/**
* Puts a new mapping and returns the mapping for the given class, or throws
* an exception if no mapping exists.
*
* @param The class type
* @param clazz the class to use
* @return the mapping for the given class, or null if no mapping exists
*/
R getOrThrow(Class clazz);
/**
* Returns a {@link Stream} of all mappings that exists.
*
* @return a {@link Stream} of all mappings that exists
*/
Stream, V>> stream();
}