[BI-2304] - preserve list order without changing API

Author: mlm483

src/main/java/org/brapi/test/BrAPITestServer/model/entity/core/ListEntity.java

@@ -30,6 +30,7 @@ public class ListEntity extends BrAPIPrimaryEntity {
 	@ManyToOne(fetch = FetchType.LAZY)
 	private PersonEntity listOwnerPerson;
 	@OneToMany(mappedBy="list", cascade = CascadeType.ALL)
+	@OrderColumn(name = "position")
 	private List<ListItemEntity> data;
 
 	public PersonEntity getListOwnerPerson() {

src/main/java/org/brapi/test/BrAPITestServer/model/entity/core/ListItemEntity.java

@@ -11,6 +11,8 @@ public class ListItemEntity extends BrAPIBaseEntity {
 	private ListEntity list;
 	@Column
 	private String item;
+	@Column
+	private Integer position;
 
 	public ListEntity getList() {
 		return list;
@@ -24,6 +26,10 @@ public String getItem() {
 	public void setItem(String item) {
 		this.item = item;
 	}
-	
-	
+	public Integer getPosition() {
+		return position;
+	}
+	public void setPosition(Integer position) {
+		this.position = position;
+	}
 }

src/main/java/org/brapi/test/BrAPITestServer/service/core/ListService.java

@@ -1,9 +1,6 @@
 package org.brapi.test.BrAPITestServer.service.core;
 
-import java.util.ArrayList;
-import java.util.Date;
-import java.util.List;
-import java.util.Optional;
+import java.util.*;
 import java.util.stream.Collectors;
 
 import jakarta.validation.Valid;
@@ -237,12 +234,16 @@ private void updateEntity(ListEntity entity, @Valid ListNewRequest list) throws
 		}
 
 		if (list.getData() != null) {
-			entity.setData(list.getData().stream().map((item) -> {
+			List<ListItemEntity> items = new ArrayList<>();
+			ListIterator<String> iter = list.getData().listIterator();
+			while (iter.hasNext()) {
 				ListItemEntity itemEntity = new ListItemEntity();
-				itemEntity.setItem(item);
+				itemEntity.setPosition(iter.nextIndex());
+				itemEntity.setItem(iter.next());
 				itemEntity.setList(entity);
-				return itemEntity;
-			}).collect(Collectors.toList()));
+				items.add(itemEntity);
+			}
+			entity.setData(items);
 		} else {
 			entity.setData(new ArrayList<>());
 		}