/*
* Copyright 2013-2014 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.cassandra.repository.support;
import java.io.Serializable;
import java.lang.reflect.Method;
import org.springframework.dao.InvalidDataAccessApiUsageException;
import org.springframework.data.cassandra.core.CassandraOperations;
import org.springframework.data.cassandra.mapping.CassandraMappingContext;
import org.springframework.data.cassandra.mapping.CassandraPersistentEntity;
import org.springframework.data.cassandra.repository.TypedIdCassandraRepository;
import org.springframework.data.cassandra.repository.query.CassandraEntityInformation;
import org.springframework.data.cassandra.repository.query.CassandraQueryMethod;
import org.springframework.data.cassandra.repository.query.StringBasedCassandraQuery;
import org.springframework.data.mapping.model.MappingException;
import org.springframework.data.repository.core.NamedQueries;
import org.springframework.data.repository.core.RepositoryMetadata;
import org.springframework.data.repository.core.support.RepositoryFactorySupport;
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.util.Assert;
/**
* Factory to create {@link TypedIdCassandraRepository} instances.
*
* @author Alex Shvid
* @author Matthew T. Adams
*/
public class CassandraRepositoryFactory extends RepositoryFactorySupport {
private final CassandraOperations cassandraTemplate;
private final CassandraMappingContext mappingContext;
/**
* Creates a new {@link CassandraRepositoryFactory} with the given {@link CassandraOperations}.
*
* @param cassandraOperations must not be {@literal null}
*/
public CassandraRepositoryFactory(CassandraOperations cassandraOperations) {
Assert.notNull(cassandraOperations);
this.cassandraTemplate = cassandraOperations;
this.mappingContext = cassandraOperations.getConverter().getMappingContext();
// TODO: remove when supporting declarative query methods
setQueryLookupStrategyKey(QueryLookupStrategy.Key.USE_DECLARED_QUERY);
}
@Override
protected Class<?> getRepositoryBaseClass(RepositoryMetadata metadata) {
return SimpleCassandraRepository.class;
}
@Override
@SuppressWarnings({ "rawtypes", "unchecked" })
protected Object getTargetRepository(RepositoryMetadata metadata) {
CassandraEntityInformation<?, Serializable> entityInformation = getEntityInformation(metadata.getDomainType());
return new SimpleCassandraRepository(entityInformation, cassandraTemplate);
}
@Override
@SuppressWarnings("unchecked")
public <T, ID extends Serializable> CassandraEntityInformation<T, ID> getEntityInformation(Class<T> domainClass) {
CassandraPersistentEntity<?> entity = mappingContext.getPersistentEntity(domainClass);
if (entity == null) {
throw new MappingException(String.format("Could not lookup mapping metadata for domain class %s!",
domainClass.getName()));
}
return new MappingCassandraEntityInformation<T, ID>((CassandraPersistentEntity<T>) entity,
cassandraTemplate.getConverter());
}
@Override
protected QueryLookupStrategy getQueryLookupStrategy(Key key) {
return new CassandraQueryLookupStrategy();
}
private class CassandraQueryLookupStrategy implements QueryLookupStrategy {
@Override
public RepositoryQuery resolveQuery(Method method, RepositoryMetadata metadata, NamedQueries namedQueries) {
CassandraQueryMethod queryMethod = new CassandraQueryMethod(method, metadata, mappingContext);
String namedQueryName = queryMethod.getNamedQueryName();
if (namedQueries.hasQuery(namedQueryName)) {
String namedQuery = namedQueries.getQuery(namedQueryName);
return new StringBasedCassandraQuery(namedQuery, queryMethod, cassandraTemplate);
} else if (queryMethod.hasAnnotatedQuery()) {
return new StringBasedCassandraQuery(queryMethod, cassandraTemplate);
} else {
throw new InvalidDataAccessApiUsageException("declarative query methods are a todo");
}
}
}
}