/*
* Copyright 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.mongodb.core.convert;
import org.springframework.data.mapping.context.MappingContext;
import org.springframework.data.mapping.model.BeanWrapper;
import org.springframework.data.mapping.model.DefaultSpELExpressionEvaluator;
import org.springframework.data.mapping.model.SpELContext;
import org.springframework.data.mapping.model.SpELExpressionEvaluator;
import org.springframework.data.mongodb.core.mapping.MongoPersistentEntity;
import org.springframework.data.mongodb.core.mapping.MongoPersistentProperty;
import com.mongodb.BasicDBObject;
import com.mongodb.DBObject;
import com.mongodb.DBRef;
/**
* @author Oliver Gierke
*/
class DefaultDbRefProxyHandler implements DbRefProxyHandler {
private final SpELContext spELContext;
private final MappingContext<? extends MongoPersistentEntity<?>, MongoPersistentProperty> mappingContext;
private final ValueResolver resolver;
/**
* @param spELContext must not be {@literal null}.
* @param conversionService must not be {@literal null}.
* @param mappingContext must not be {@literal null}.
*/
public DefaultDbRefProxyHandler(SpELContext spELContext,
MappingContext<? extends MongoPersistentEntity<?>, MongoPersistentProperty> mappingContext, ValueResolver resolver) {
this.spELContext = spELContext;
this.mappingContext = mappingContext;
this.resolver = resolver;
}
/*
* (non-Javadoc)
* @see org.springframework.data.mongodb.core.convert.DbRefProxyHandler#populateId(com.mongodb.DBRef, java.lang.Object)
*/
@Override
public Object populateId(MongoPersistentProperty property, DBRef source, Object proxy) {
if (source == null) {
return proxy;
}
MongoPersistentEntity<?> persistentEntity = mappingContext.getPersistentEntity(property);
MongoPersistentProperty idProperty = persistentEntity.getIdProperty();
if(idProperty.usePropertyAccess()) {
return proxy;
}
SpELExpressionEvaluator evaluator = new DefaultSpELExpressionEvaluator(proxy, spELContext);
BeanWrapper<Object> proxyWrapper = BeanWrapper.create(proxy, null);
DBObject object = new BasicDBObject(idProperty.getFieldName(), source.getId());
ObjectPath objectPath = ObjectPath.ROOT.push(proxy, persistentEntity, null);
proxyWrapper.setProperty(idProperty, resolver.getValueInternal(idProperty, object, evaluator, objectPath));
return proxy;
}
}