Examples with EntityInstantiator org.springframework.data.convert.EntityInstantiator used on opensource projects

Example 1 with EntityInstantiator

use of org.springframework.data.convert.EntityInstantiator in project spring-data-mongodb by spring-projects.

the class MappingMongoConverter method read.

@Nullable
private <S extends Object> S read(final MongoPersistentEntity<S> entity, final Document bson, final ObjectPath path) {
    DefaultSpELExpressionEvaluator evaluator = new DefaultSpELExpressionEvaluator(bson, spELContext);
    ParameterValueProvider<MongoPersistentProperty> provider = getParameterProvider(entity, bson, evaluator, path);
    EntityInstantiator instantiator = instantiators.getInstantiatorFor(entity);
    S instance = instantiator.createInstance(entity, provider);
    PersistentPropertyAccessor accessor = new ConvertingPropertyAccessor(entity.getPropertyAccessor(instance), conversionService);
    MongoPersistentProperty idProperty = entity.getIdProperty();
    DocumentAccessor documentAccessor = new DocumentAccessor(bson);
    // make sure id property is set before all other properties
    Object idValue = null;
    if (idProperty != null && documentAccessor.hasValue(idProperty)) {
        idValue = readIdValue(path, evaluator, idProperty, documentAccessor);
        accessor.setProperty(idProperty, idValue);
    }
    ObjectPath currentPath = path.push(instance, entity, idValue != null ? bson.get(idProperty.getFieldName()) : null);
    MongoDbPropertyValueProvider valueProvider = new MongoDbPropertyValueProvider(documentAccessor, evaluator, currentPath);
    DbRefResolverCallback callback = new DefaultDbRefResolverCallback(bson, currentPath, evaluator, MappingMongoConverter.this);
    readProperties(entity, accessor, idProperty, documentAccessor, valueProvider, callback);
    return instance;
}