PolygonData -> JsonNode 변환 예제 커밋

src/main/java/com/kamco/cd/kamcoback/postgres/core/ChangeDetectionCoreService.java

@@ -1,5 +1,8 @@
 package com.kamco.cd.kamcoback.postgres.core;
 
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import com.kamco.cd.kamcoback.changedetection.dto.ChangeDetectionDto;
 import com.kamco.cd.kamcoback.postgres.entity.MapSheetAnalDataGeomEntity;
 import com.kamco.cd.kamcoback.postgres.repository.changedetection.ChangeDetectionRepository;
@@ -16,7 +19,7 @@ public class ChangeDetectionCoreService {
 
   private final ChangeDetectionRepository changeDetectionRepository;
 
-  public List<ChangeDetectionDto> getPolygonToPoint() {
+  public List<ChangeDetectionDto.TestDto> getPolygonToPoint() {
     List<MapSheetAnalDataGeomEntity> list = changeDetectionRepository.findAll();
 
     return list.stream()
@@ -26,8 +29,24 @@ public class ChangeDetectionCoreService {
               // 중심 좌표 계산
               Point centroid = polygon.getCentroid();
 
-              return new ChangeDetectionDto(p.getId(), polygon, centroid.getX(), centroid.getY());
+              return new ChangeDetectionDto.TestDto(p.getId(), polygon, centroid.getX(), centroid.getY());
             })
         .collect(Collectors.toList());
   }
+
+  public List<JsonNode> getPolygonToJson() {
+    List<String> list = changeDetectionRepository.findPolygonJson();
+    ObjectMapper mapper = new ObjectMapper();
+
+    return list.stream()
+      .map(
+        s -> {
+          try {
+            return mapper.readTree(s);
+          } catch (JsonProcessingException e) {
+            throw new RuntimeException(e);
+          }
+        })
+      .collect(Collectors.toList());
+  }
 }

src/main/java/com/kamco/cd/kamcoback/postgres/repository/changedetection/ChangeDetectionRepositoryCustom.java

@@ -1,6 +1,10 @@
 package com.kamco.cd.kamcoback.postgres.repository.changedetection;
 
+import java.util.List;
+
 public interface ChangeDetectionRepositoryCustom {
 
   String getPolygonToPoint();
+
+  List<String> findPolygonJson();
 }

src/main/java/com/kamco/cd/kamcoback/postgres/repository/changedetection/ChangeDetectionRepositoryImpl.java

@@ -3,6 +3,7 @@ package com.kamco.cd.kamcoback.postgres.repository.changedetection;
 import static com.kamco.cd.kamcoback.postgres.entity.QMapSheetAnalDataGeomEntity.mapSheetAnalDataGeomEntity;
 
 import com.kamco.cd.kamcoback.postgres.entity.MapSheetAnalDataGeomEntity;
+import com.querydsl.core.types.dsl.Expressions;
 import com.querydsl.jpa.impl.JPAQueryFactory;
 import java.util.List;
 import org.springframework.data.jpa.repository.support.QuerydslRepositorySupport;
@@ -23,10 +24,14 @@ public class ChangeDetectionRepositoryImpl extends QuerydslRepositorySupport
     return null;
   }
 
-  public List<MapSheetAnalDataGeomEntity> findAll() {
+  @Override
+  public List<String> findPolygonJson(){
     return queryFactory
-        .selectFrom(mapSheetAnalDataGeomEntity)
-        .orderBy(mapSheetAnalDataGeomEntity.id.desc())
-        .fetch();
+      .select(
+        Expressions.stringTemplate("ST_AsGeoJSON({0})", mapSheetAnalDataGeomEntity.geom)
+      )
+      .from(mapSheetAnalDataGeomEntity)
+      .orderBy(mapSheetAnalDataGeomEntity.id.desc())
+      .fetch();
   }
 }