/*
* Copyright 2010-2017 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.mongodb.repository.support;
import static org.springframework.data.querydsl.QuerydslUtils.*;
import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.Optional;
import org.springframework.dao.InvalidDataAccessApiUsageException;
import org.springframework.data.mapping.context.MappingContext;
import org.springframework.data.mongodb.core.MongoOperations;
import org.springframework.data.mongodb.core.mapping.MongoPersistentEntity;
import org.springframework.data.mongodb.core.mapping.MongoPersistentProperty;
import org.springframework.data.mongodb.repository.MongoRepository;
import org.springframework.data.mongodb.repository.query.MongoEntityInformation;
import org.springframework.data.mongodb.repository.query.MongoQueryMethod;
import org.springframework.data.mongodb.repository.query.PartTreeMongoQuery;
import org.springframework.data.mongodb.repository.query.StringBasedMongoQuery;
import org.springframework.data.projection.ProjectionFactory;
import org.springframework.data.querydsl.QuerydslPredicateExecutor;
import org.springframework.data.repository.core.NamedQueries;
import org.springframework.data.repository.core.RepositoryInformation;
import org.springframework.data.repository.core.RepositoryMetadata;
import org.springframework.data.repository.core.support.RepositoryFactorySupport;
import org.springframework.data.repository.query.EvaluationContextProvider;
import org.springframework.data.repository.query.QueryLookupStrategy;
import org.springframework.data.repository.query.QueryLookupStrategy.Key;
import org.springframework.data.repository.query.RepositoryQuery;
import org.springframework.data.repository.reactive.ReactiveCrudRepository;
import org.springframework.data.repository.reactive.RxJava1CrudRepository;
import org.springframework.data.repository.util.QueryExecutionConverters;
import org.springframework.expression.spel.standard.SpelExpressionParser;
import org.springframework.util.Assert;
import org.springframework.util.ClassUtils;
/**
* Factory to create {@link MongoRepository} instances.
*
* @author Oliver Gierke
* @author Thomas Darimont
* @author Christoph Strobl
* @author Mark Paluch
*/
public class MongoRepositoryFactory extends RepositoryFactorySupport {
// TODO: to we need this here and in ReactiveWrappers?
private static final boolean PROJECT_REACTOR_PRESENT = ClassUtils.isPresent("reactor.core.publisher.Flux",
QueryExecutionConverters.class.getClassLoader());
private static final boolean RXJAVA_OBSERVABLE_PRESENT = ClassUtils.isPresent("rx.Observable",
QueryExecutionConverters.class.getClassLoader());
private static final SpelExpressionParser EXPRESSION_PARSER = new SpelExpressionParser();
private final MongoOperations operations;
private final MappingContext<? extends MongoPersistentEntity<?>, MongoPersistentProperty> mappingContext;
/**
* Creates a new {@link MongoRepositoryFactory} with the given {@link MongoOperations}.
*
* @param mongoOperations must not be {@literal null}.
*/
public MongoRepositoryFactory(MongoOperations mongoOperations) {
Assert.notNull(mongoOperations, "MongoOperations must not be null!");
this.operations = mongoOperations;
this.mappingContext = mongoOperations.getConverter().getMappingContext();
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.core.support.RepositoryFactorySupport#getRepositoryBaseClass(org.springframework.data.repository.core.RepositoryMetadata)
*/
@Override
protected Class<?> getRepositoryBaseClass(RepositoryMetadata metadata) {
boolean isReactiveRepository = (PROJECT_REACTOR_PRESENT
&& ReactiveCrudRepository.class.isAssignableFrom(metadata.getRepositoryInterface()))
|| (RXJAVA_OBSERVABLE_PRESENT
&& RxJava1CrudRepository.class.isAssignableFrom(metadata.getRepositoryInterface()));
boolean isQueryDslRepository = QUERY_DSL_PRESENT
&& QuerydslPredicateExecutor.class.isAssignableFrom(metadata.getRepositoryInterface());
if (isReactiveRepository) {
if (isQueryDslRepository) {
throw new InvalidDataAccessApiUsageException(
"Cannot combine Querydsl and reactive repository in one interface");
}
return SimpleReactiveMongoRepository.class;
}
return isQueryDslRepository ? QueryDslMongoRepository.class : SimpleMongoRepository.class;
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.core.support.RepositoryFactorySupport#getTargetRepository(org.springframework.data.repository.core.RepositoryInformation)
*/
@Override
protected Object getTargetRepository(RepositoryInformation information) {
MongoEntityInformation<?, Serializable> entityInformation = getEntityInformation(information.getDomainType(),
information);
return getTargetRepositoryViaReflection(information, entityInformation, operations);
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.core.support.RepositoryFactorySupport#getQueryLookupStrategy(org.springframework.data.repository.query.QueryLookupStrategy.Key, org.springframework.data.repository.query.EvaluationContextProvider)
*/
@Override
protected Optional<QueryLookupStrategy> getQueryLookupStrategy(Key key,
EvaluationContextProvider evaluationContextProvider) {
return Optional.of(new MongoQueryLookupStrategy(operations, evaluationContextProvider, mappingContext));
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.core.support.RepositoryFactorySupport#getEntityInformation(java.lang.Class)
*/
public <T, ID> MongoEntityInformation<T, ID> getEntityInformation(Class<T> domainClass) {
return getEntityInformation(domainClass, null);
}
private <T, ID> MongoEntityInformation<T, ID> getEntityInformation(Class<T> domainClass,
RepositoryInformation information) {
MongoPersistentEntity<?> entity = mappingContext.getRequiredPersistentEntity(domainClass);
return MongoEntityInformationSupport.<T, ID> entityInformationFor(entity,
information != null ? information.getIdType() : null);
}
/**
* {@link QueryLookupStrategy} to create {@link PartTreeMongoQuery} instances.
*
* @author Oliver Gierke
* @author Thomas Darimont
*/
private static class MongoQueryLookupStrategy implements QueryLookupStrategy {
private final MongoOperations operations;
private final EvaluationContextProvider evaluationContextProvider;
MappingContext<? extends MongoPersistentEntity<?>, MongoPersistentProperty> mappingContext;
public MongoQueryLookupStrategy(MongoOperations operations, EvaluationContextProvider evaluationContextProvider,
MappingContext<? extends MongoPersistentEntity<?>, MongoPersistentProperty> mappingContext) {
this.operations = operations;
this.evaluationContextProvider = evaluationContextProvider;
this.mappingContext = mappingContext;
}
/*
* (non-Javadoc)
* @see org.springframework.data.repository.query.QueryLookupStrategy#resolveQuery(java.lang.reflect.Method, org.springframework.data.repository.core.RepositoryMetadata, org.springframework.data.projection.ProjectionFactory, org.springframework.data.repository.core.NamedQueries)
*/
@Override
public RepositoryQuery resolveQuery(Method method, RepositoryMetadata metadata, ProjectionFactory factory,
NamedQueries namedQueries) {
MongoQueryMethod queryMethod = new MongoQueryMethod(method, metadata, factory, mappingContext);
String namedQueryName = queryMethod.getNamedQueryName();
if (namedQueries.hasQuery(namedQueryName)) {
String namedQuery = namedQueries.getQuery(namedQueryName);
return new StringBasedMongoQuery(namedQuery, queryMethod, operations, EXPRESSION_PARSER,
evaluationContextProvider);
} else if (queryMethod.hasAnnotatedQuery()) {
return new StringBasedMongoQuery(queryMethod, operations, EXPRESSION_PARSER, evaluationContextProvider);
} else {
return new PartTreeMongoQuery(queryMethod, operations);
}
}
}
}