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/*
* Copyright MapStruct Authors.
*
* Licensed under the Apache License version 2.0, available at http://www.apache.org/licenses/LICENSE-2.0
*/
package org.mapstruct;
/**
* Strategy for propagating the value of collection-typed properties from source to target.
*
* @author Sjaak Derksen
*/
public enum CollectionMappingStrategy {
/**
* The setter of the target property will be used to propagate the value:
* {@code orderDto.setOrderLines(order.getOrderLines)}.
*
* If no setter is available but a getter method, this will be used, under the assumption it has been initialized:
* {@code orderDto.getOrderLines().addAll(order.getOrderLines)}. This will also be the case when using
* {@link MappingTarget} (updating existing instances).
*/
ACCESSOR_ONLY,
/**
* If present, the setter of the target property will be used to propagate the value:
* {@code orderDto.setOrderLines(order.getOrderLines)}.
*
* If no setter but and adder method is present, that adder will be invoked for each element of the source
* collection: {@code order.addOrderLine(orderLine() )}.
*
* If neither a setter nor an adder method but a getter for the target property is present, that getter will be
* used, assuming it returns an initialized collection: If no setter is available, MapStruct will first look for an
* adder method before resorting to a getter.
*/
SETTER_PREFERRED,
/**
* Identical to {@link #SETTER_PREFERRED}, only that adder methods will be preferred over setter methods, if both
* are present for a given collection-typed property.
*/
ADDER_PREFERRED,
/**
* Identical to {@link #SETTER_PREFERRED}, however the target collection will not be cleared and accessed via
* addAll in case of updating existing bean instances, see: {@link MappingTarget}.
*
* Instead the target accessor (e.g. set) will be used on the target bean to set the collection.
*/
TARGET_IMMUTABLE;
}