org.springframework.data.repository.core.support.AbstractRepositoryMetadata Maven / Gradle / Ivy
/*
* Copyright 2011-2019 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.support;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.Collections;
import java.util.Set;
import org.springframework.data.domain.Pageable;
import org.springframework.data.repository.Repository;
import org.springframework.data.repository.core.CrudMethods;
import org.springframework.data.repository.core.RepositoryMetadata;
import org.springframework.data.repository.util.QueryExecutionConverters;
import org.springframework.data.repository.util.ReactiveWrappers;
import org.springframework.data.util.ClassTypeInformation;
import org.springframework.data.util.Lazy;
import org.springframework.data.util.TypeInformation;
import org.springframework.util.Assert;
/**
* Base class for {@link RepositoryMetadata} implementations.
*
* @author Oliver Gierke
* @author Thomas Darimont
* @author Jens Schauder
*/
public abstract class AbstractRepositoryMetadata implements RepositoryMetadata {
private final TypeInformation typeInformation;
private final Class repositoryInterface;
private final Lazy crudMethods;
/**
* Creates a new {@link AbstractRepositoryMetadata}.
*
* @param repositoryInterface must not be {@literal null} and must be an interface.
*/
public AbstractRepositoryMetadata(Class repositoryInterface) {
Assert.notNull(repositoryInterface, "Given type must not be null!");
Assert.isTrue(repositoryInterface.isInterface(), "Given type must be an interface!");
this.repositoryInterface = repositoryInterface;
this.typeInformation = ClassTypeInformation.from(repositoryInterface);
this.crudMethods = Lazy.of(() -> new DefaultCrudMethods(this));
}
/**
* Creates a new {@link RepositoryMetadata} for the given repository interface.
*
* @param repositoryInterface must not be {@literal null}.
* @since 1.9
* @return
*/
public static RepositoryMetadata getMetadata(Class repositoryInterface) {
Assert.notNull(repositoryInterface, "Repository interface must not be null!");
return Repository.class.isAssignableFrom(repositoryInterface) ? new DefaultRepositoryMetadata(repositoryInterface)
: new AnnotationRepositoryMetadata(repositoryInterface);
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.core.RepositoryMetadata#getReturnedDomainClass(java.lang.reflect.Method)
*/
public Class getReturnedDomainClass(Method method) {
return QueryExecutionConverters.unwrapWrapperTypes(typeInformation.getReturnType(method)).getType();
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.core.RepositoryMetadata#getRepositoryInterface()
*/
public Class getRepositoryInterface() {
return this.repositoryInterface;
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.core.RepositoryMetadata#getCrudMethods()
*/
@Override
public CrudMethods getCrudMethods() {
return this.crudMethods.get();
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.core.RepositoryMetadata#isPagingRepository()
*/
@Override
public boolean isPagingRepository() {
return getCrudMethods().getFindAllMethod()//
.map(it -> Arrays.asList(it.getParameterTypes()).contains(Pageable.class))//
.orElse(false);
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.core.RepositoryMetadata#getAlternativeDomainTypes()
*/
@Override
public Set> getAlternativeDomainTypes() {
return Collections.emptySet();
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.core.RepositoryMetadata#isReactiveRepository()
*/
@Override
public boolean isReactiveRepository() {
return ReactiveWrappers.usesReactiveType(repositoryInterface);
}
}