feat: Phase 3.15 배치 서비스 Raw Query 전환 완료

4개 서비스 24개 Prisma 호출 전환 완료

배치 서비스 전환:
- BatchExternalDbService (8개)
- BatchExecutionLogService (7개)
- BatchManagementService (5개)
- BatchSchedulerService (4개)

주요 기술:
- json_agg + json_build_object
- 동적 WHERE 절
- 동적 UPDATE 쿼리
- PostgreSQL placeholders

Phase 3 완료
문서: PHASE3.15_BATCH_SERVICES_MIGRATION.md

backend-node/src/services/batchManagementService.ts

@@ -1,7 +1,7 @@
 // 배치관리 전용 서비스 (기존 소스와 완전 분리)
 // 작성일: 2024-12-24
 
-import prisma from "../config/database";
+import { query, queryOne } from "../database/db";
 import { PasswordEncryption } from "../utils/passwordEncryption";
 import { DatabaseConnectorFactory } from "../database/DatabaseConnectorFactory";
 
@@ -49,16 +49,18 @@ export class BatchManagementService {
       });
 
       // 활성화된 외부 DB 연결 조회
-      const externalConnections = await prisma.external_db_connections.findMany({
-        where: { is_active: 'Y' },
-        select: {
-          id: true,
-          connection_name: true,
-          db_type: true,
-          description: true
-        },
-        orderBy: { connection_name: 'asc' }
-      });
+      const externalConnections = await query<{
+        id: number;
+        connection_name: string;
+        db_type: string;
+        description: string;
+      }>(
+        `SELECT id, connection_name, db_type, description
+        FROM external_db_connections
+        WHERE is_active = 'Y'
+        ORDER BY connection_name ASC`,
+        []
+      );
 
       // 외부 DB 연결 추가
       externalConnections.forEach(conn => {
@@ -97,13 +99,14 @@ export class BatchManagementService {
 
       if (connectionType === 'internal') {
         // 내부 DB 테이블 조회
-        const result = await prisma.$queryRaw<Array<{ table_name: string }>>`
-          SELECT table_name
+        const result = await query<{ table_name: string }>(
+          `SELECT table_name
           FROM information_schema.tables
           WHERE table_schema = 'public'
           AND table_type = 'BASE TABLE'
-          ORDER BY table_name
-        `;
+          ORDER BY table_name`,
+          []
+        );
 
         tables = result.map(row => ({
           table_name: row.table_name,
@@ -153,22 +156,23 @@ export class BatchManagementService {
         // 내부 DB 컬럼 조회
         console.log(`[BatchManagementService] 내부 DB 컬럼 조회 시작: ${tableName}`);
 
-        const result = await prisma.$queryRaw<Array<{ 
+        const result = await query<{ 
           column_name: string; 
           data_type: string; 
           is_nullable: string; 
           column_default: string | null 
-        }>>`
-          SELECT 
+        }>(
+          `SELECT 
             column_name,
             data_type,
             is_nullable,
             column_default
           FROM information_schema.columns 
           WHERE table_schema = 'public' 
-          AND table_name = ${tableName}
-          ORDER BY ordinal_position
-        `;
+          AND table_name = $1
+          ORDER BY ordinal_position`,
+          [tableName]
+        );
 
         console.log(`[BatchManagementService] 쿼리 결과:`, result);
 
@@ -215,9 +219,10 @@ export class BatchManagementService {
   private static async getExternalTables(connectionId: number): Promise<BatchApiResponse<BatchTableInfo[]>> {
     try {
       // 연결 정보 조회
-      const connection = await prisma.external_db_connections.findUnique({
-        where: { id: connectionId }
-      });
+      const connection = await queryOne<any>(
+        `SELECT * FROM external_db_connections WHERE id = $1`,
+        [connectionId]
+      );
 
       if (!connection) {
         return {
@@ -274,9 +279,10 @@ export class BatchManagementService {
       console.log(`[BatchManagementService] getExternalTableColumns 호출: connectionId=${connectionId}, tableName=${tableName}`);
       
       // 연결 정보 조회
-      const connection = await prisma.external_db_connections.findUnique({
-        where: { id: connectionId }
-      });
+      const connection = await queryOne<any>(
+        `SELECT * FROM external_db_connections WHERE id = $1`,
+        [connectionId]
+      );
 
       if (!connection) {
         console.log(`[BatchManagementService] 연결 정보를 찾을 수 없음: connectionId=${connectionId}`);