/*
* Copyright 2016-2017 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.cassandra.repository.query;
import java.util.Map;
import org.springframework.data.convert.CustomConversions;
import org.springframework.data.repository.query.ReturnedType;
import org.springframework.util.ClassUtils;
/**
* Represents a {@link ReturnedType} in the context of Spring Data Cassandra.
*
* @author Mark Paluch
*/
class CassandraReturnedType {
private final ReturnedType returnedType;
private final CustomConversions customConversions;
CassandraReturnedType(ReturnedType returnedType, CustomConversions customConversions) {
this.returnedType = returnedType;
this.customConversions = customConversions;
}
boolean isProjecting() {
if (!returnedType.isProjecting()) {
return false;
}
// Spring Data Cassandra allows List<Map<String, Object> and Map<String, Object> declarations
// on query methods so we don't want to let projection kick in
if (ClassUtils.isAssignable(Map.class, returnedType.getReturnedType())) {
return false;
}
// Type conversion using registered conversions is handled on template level
if (customConversions.hasCustomWriteTarget(returnedType.getReturnedType())) {
return false;
}
// Don't apply projection on Cassandra simple types
return !customConversions.isSimpleType(returnedType.getReturnedType());
}
Class<?> getDomainType() {
return returnedType.getDomainType();
}
Class<?> getReturnedType() {
return returnedType.getReturnedType();
}
}