/*
* Copyright 2011-2016 the original author or authors.
*
* 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.springframework.data.repository.core;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Set;
import org.springframework.data.repository.support.Repositories;
/**
* Metadata for repository interfaces.
*
* @author Oliver Gierke
*/
public interface RepositoryMetadata {
/**
* Returns the id class the given class is declared for.
*
* @return the id class of the entity managed by the repository for or {@code null} if none found.
*/
Class<?> getIdType();
/**
* Returns the domain class the repository is declared for.
*
* @return the domain class the repository is handling or {@code null} if none found.
*/
Class<?> getDomainType();
/**
* Returns the repository interface.
*
* @return
*/
Class<?> getRepositoryInterface();
/**
* Returns the domain class returned by the given {@link Method}. Will extract the type from {@link Collection}s and
* {@link org.springframework.data.domain.Page} as well.
*
* @param method
* @return
*/
Class<?> getReturnedDomainClass(Method method);
/**
* Returns {@link CrudMethods} meta information for the repository.
*
* @return
*/
CrudMethods getCrudMethods();
/**
* Returns whether the repository is a paging one.
*
* @return
*/
boolean isPagingRepository();
/**
* Returns the set of types the repository shall be discoverable for when trying to look up a repository by domain
* type.
*
* @see Repositories#getRepositoryFor(Class)
* @return the set of types the repository shall be discoverable for when trying to look up a repository by domain
* type, must not be {@literal null}.
* @since 1.11
*/
Set<Class<?>> getAlternativeDomainTypes();
/**
* Returns whether the repository is a reactive one, i.e. if it uses reactive types in one of its methods.
*
* @return
* @since 2.0
*/
boolean isReactiveRepository();
}