top.tangyh.basic.dozer.DozerUtils Maven / Gradle / Ivy
package top.tangyh.basic.dozer;
import com.github.dozermapper.core.Mapper;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
import java.util.Set;
import java.util.stream.Collectors;
/**
* 很诡异，DozerUtils 工具类不能以 xxMapper 结尾
*
* 使用dozer对复杂对象进行转换时，若对象标记了 @Accessors(chain = true) 注解， 会报NPE异常
*
* @author zuihou
* @date 2017-12-08 14:41
*/
public class DozerUtils {
private final Mapper mapper;
public DozerUtils(Mapper mapper) {
this.mapper = mapper;
}
public Mapper getMapper() {
return this.mapper;
}
/**
* Constructs new instance of destinationClass and performs mapping between from source
*
* @param source 源对象
* @param destinationClass 目标类型
* @return 目标对象
*/
public T map(Object source, Class destinationClass) {
if (source == null) {
return null;
}
return mapper.map(source, destinationClass);
}
public T map2(Object source, Class destinationClass) {
if (source == null) {
try {
return destinationClass.getDeclaredConstructor().newInstance();
} catch (Exception ignored) {
}
}
return mapper.map(source, destinationClass);
}
/**
* Performs mapping between source and destination objects
*
* @param source 源对象
* @param destination 目标对象
*/
public void map(Object source, Object destination) {
if (source == null) {
return;
}
mapper.map(source, destination);
}
/**
* Constructs new instance of destinationClass and performs mapping between from source
*
* @param source 源对象
* @param destinationClass 目标类型
* @param mapId 转换id
* @return 目标对象
*/
public T map(Object source, Class destinationClass, String mapId) {
if (source == null) {
return null;
}
return mapper.map(source, destinationClass, mapId);
}
/**
* Performs mapping between source and destination objects
*
* @param source 源对象
* @param destination 目标类型
* @param mapId 转换id
*/
public void map(Object source, Object destination, String mapId) {
if (source == null) {
return;
}
mapper.map(source, destination, mapId);
}
/**
* 将集合转成集合
* List --> List
*
* @param sourceList 源集合
* @param destinationClass 目标类型
* @return 目标集合
*/
public List mapList(Collection sourceList, Class destinationClass) {
return mapPage(sourceList, destinationClass);
}
public List mapPage(Collection sourceList, Class destinationClass) {
if (sourceList == null || sourceList.isEmpty() || destinationClass == null) {
return Collections.emptyList();
}
return sourceList.parallelStream()
.filter(Objects::nonNull)
.map((sourceObject) -> mapper.map(sourceObject, destinationClass))
.collect(Collectors.toList());
}
public Set mapSet(Collection sourceList, Class destinationClass) {
if (sourceList == null || sourceList.isEmpty() || destinationClass == null) {
return Collections.emptySet();
}
return sourceList.parallelStream().map((sourceObject) -> mapper.map(sourceObject, destinationClass)).collect(Collectors.toSet());
}
}