FlexDBLink

FlexDBLink は、開発・テスト工程における「DBデータの用意と検証」を圧倒的に効率化するデータ管理ツールです。 CSV/JSON/YAML/XML などのシンプルなテキストファイルを使って、データベースへの 一括ロード／ダンプ を誰でも簡単に実行できます。さらに BLOB/CLOB などの大容量 LOB データも「外部ファイル参照」で直感的に扱えるため、アプリケーションの実運用データを忠実に再現できます。

CLI によるバッチ投入・取得はもちろん、JUnit 5 拡張機能を利用すれば テストケース単位でのデータ準備と自動ロールバック が可能。これにより「テスト前後のDB状態管理」や「シナリオごとのデータ切り替え」がスムーズになり、手作業のデータ調整から解放されます。そして最大の強みは、SQL スクリプトに依存せず、テキストデータとして一元管理できるため、Git などで容易に構成管理・差分追跡・再現性の確保ができることです。

FlexDBLink is a powerful yet lightweight tool designed to streamline database test data management. It enables seamless round-trips between DB and structured files (CSV/JSON/YAML/XML), making it effortless to load datasets into your database or dump them back into files for inspection and reuse. Even large LOBs (BLOB/CLOB) are handled intuitively through external file references, so you can reproduce production-like data with ease.

Beyond bulk loading/dumping via the CLI, FlexDBLink provides a JUnit 5 extension that automatically loads datasets before test execution and rolls back afterward. This ensures reliable, reproducible, and isolated test environments, eliminating the hassle of manual data setup and cleanup. Most importantly, its greatest strength lies in the fact that you no longer need to rely on handwritten SQL scripts — datasets are managed as plain text files, enabling easy version control with Git, clear diff tracking, and reproducibility across environments.

特長

Load & Dump: CSV / JSON / YAML / XML ファイルから DB へデータロードします。また、DB から CSV/JSON/YAML/XML ファイルとしてデータ取得できます。LOBデータをファイルとして管理し、データロードおよびデータ取得できます。
LOB は外部ファイルで: データセルに file:... と書けば、files/ ディレクトリの実体とリンクします（JUnit 5 拡張の配置規約は後述）。
2 段階ロード（初期投入 pre とシナリオ追加入力）＋シナリオ時は 既存重複の削除＋新規 INSERT のみを実施します。
テーブル順序自動化: DBUnit 用の table-ordering.txt が無ければデータセット群から自動生成します。
JUnit 5 拡張: @LoadData でテストケースごとにデータファイルを投入。SpringTestのトランザクション制御に従います。
Oracle 対応: INTERVAL/TIMESTAMP/TZ の正規化、BLOB/CLOB の JDBC 標準 API での投入などを実装しています。

Features

Load & Dump: Load data from CSV / JSON / YAML / XML files into the DB, and export data from the DB as CSV/JSON/YAML/XML files. LOB data is managed as external files and can be both loaded and exported.
External LOB files: If a dataset cell contains file:..., it links to the actual file under the files/ directory (JUnit 5 extension layout is described below).
Two-phase loading: Initial pre load plus scenario-specific additions; during scenarios, remove existing duplicates and perform INSERT-only.
Automated table ordering: If table-ordering.txt for DBUnit is missing, it’s auto-generated from the dataset set.
JUnit 5 extension: Use @LoadData to load datasets per test case; adheres to Spring Test transaction management.
Oracle support: Normalization for INTERVAL/TIMESTAMP/TZ types and LOB insertion via standard JDBC APIs (BLOB/CLOB).

Temporal Formats and Type Coverage (Oracle / PostgreSQL / MySQL / SQL Server) / 時刻フォーマットと対応型（Oracle / PostgreSQL / MySQL / SQL Server）

The following matrix defines target temporal formats used by FlexDBLink.
以下の表は、FlexDBLink が対象とする時刻フォーマットを示します。

Oracle

Category / 区分	Target format / 対象フォーマット
`DATE`	`yyyy-MM-dd`
`TIME`	`HH:mm:ss`
`TIMESTAMP`	`yyyy-MM-dd HH:mm:ss.SSS`
`TIMESTAMP WITH TIME ZONE` / `TIMESTAMP WITH LOCAL TIME ZONE`	`yyyy-MM-dd HH:mm:ss +HHMM`
`INTERVAL YEAR TO MONTH`	`Y-M`
`INTERVAL DAY TO SECOND`	`D H:M:S`

Covered Oracle SQL types in current dialect handling:
現在の Oracle 方言処理で対応している SQL 型: NUMBER, BINARY_FLOAT, BINARY_DOUBLE, VARCHAR2, CHAR, NVARCHAR2, NCHAR, DATE, TIMESTAMP(6), TIMESTAMP(6) WITH TIME ZONE, TIMESTAMP(6) WITH LOCAL TIME ZONE, INTERVAL YEAR TO MONTH, INTERVAL DAY TO SECOND, RAW, CLOB, NCLOB, BLOB.

PostgreSQL

Category / 区分	Target format / 対象フォーマット
`DATE`	`yyyy-MM-dd`
`TIME`	`HH:mm:ss`
`TIMESTAMP`	`yyyy-MM-dd HH:mm:ss[.fraction]`
`TIMESTAMPTZ`	`yyyy-MM-dd HH:mm:ss[.fraction]+HHMM`

Covered PostgreSQL SQL types in current dialect handling:
現在の PostgreSQL 方言処理で対応している SQL 型: BIGINT, NUMERIC, REAL, DOUBLE PRECISION, VARCHAR, CHAR, DATE, TIME, TIMESTAMP, TIMESTAMPTZ, BYTEA, XML, TEXT.

MySQL

Category / 区分	Target format / 対象フォーマット
`DATE`	`yyyy-MM-dd`
`TIME`	`HH:mm:ss`
`DATETIME` / `TIMESTAMP`	`yyyy-MM-dd HH:mm:ss[.fraction]`
`YEAR`	`yyyy`
LOB reference	`file:<relative-path>`

Covered MySQL SQL types in current dialect handling:
現在の MySQL 方言処理で対応している SQL 型: TINYINT, SMALLINT, MEDIUMINT, INT, BIGINT, DECIMAL, NUMERIC, FLOAT, DOUBLE, BIT, BOOLEAN, CHAR, VARCHAR, TINYTEXT, TEXT, MEDIUMTEXT, LONGTEXT, ENUM, SET, JSON, BINARY, VARBINARY, TINYBLOB, BLOB, MEDIUMBLOB, LONGBLOB, DATE, TIME, DATETIME, TIMESTAMP, YEAR.

SQL Server

Category / 区分	Target format / 対象フォーマット
`DATE`	`yyyy-MM-dd`
`TIME`	`HH:mm:ss`
`DATETIME2`	`yyyy-MM-dd HH:mm:ss[.fraction]`
LOB reference	`file:<relative-path>`

Covered SQL Server SQL types in current dialect handling:
現在の SQL Server 方言処理で対応している SQL 型: BIGINT, INT, SMALLINT, TINYINT, DECIMAL, NUMERIC, FLOAT, REAL, BIT, CHAR, VARCHAR, NCHAR, NVARCHAR, DATE, TIME, DATETIME2, VARBINARY, XML.

前提

Java 11+（JAVA_HOME を JDK 11 以上に設定）
- サポート対象（CIで動作確認）: Java 11 / 17 / 21（LTS）
- 互換性ターゲット: Java 25（非LTS、CI必須対象外・動作報告歓迎）
Apache Maven 3.9+（CLI ツールのビルドに使用します。例: 3.9.10）
Oracle JDBC Driver（oracle.jdbc.OracleDriver）
OS: Windows / macOS / Linux いずれでも可

現状の方言実装は Oracle を主対象に最適化しています。その他 RDB は順次対応予定です。

Requirements

Java 11+ (set JAVA_HOME to JDK 11 or later)
- Supported (CI-tested): Java 11 / 17 / 21 (LTS)
- Compatibility target: Java 25 (non-LTS; not required in CI; bug reports welcome)
Apache Maven 3.9+ (used to build the CLI tool; e.g., 3.9.10)
Oracle JDBC Driver (oracle.jdbc.OracleDriver)
OS: Windows / macOS / Linux

The current dialect implementation is primarily optimized for Oracle. Support for other RDBMSs will be added progressively.

CLI ビルド方法 / CLI Build

mvn clean package -Dmaven.test.skip=true

Artifacts (in target/) / 生成物

flexdblink.jar — 実行 JAR（配布 ZIP に含まれる）
FlexDBLink-sources.jar — ソース JAR
FlexDBLink-distribution.zip — 配布用 ZIP （ZIP 展開後は FlexDBLink/ 直下に flexdblink.jar と conf/application.yml が配置されます）

CLI の使い方 / CLI Usage

ビルドで生成される flexdblink.jar を使います。

コマンド

# ロード（シナリオ省略時は application.yml の pre-dir-name を使用、通常 "pre"）
java -jar flexdblink.jar --load [<scenario>] --target DB1,DB2

# ダンプ（シナリオ指定が必須）
java -jar flexdblink.jar --dump <scenario> --target DB1,DB2

--load / -l：ロードモード。<scenario> を省略すると pre を使用。
--dump / -d：ダンプモード。シナリオ名必須。
--target / -t：対象 DB ID のカンマ区切り。省略時は connections[].id の全件が対象。

注意: コマンドラインからの Spring プロパティ上書きは無効化しています。設定は application.yml に記述してください。

--load / -l: Load mode. Uses pre if <scenario> is omitted.
--dump / -d: Dump mode. Scenario name required.
--target / -t: Comma-separated target DB IDs. If omitted, all entries in connections[].id are targeted.

Note: Overriding Spring properties from the command line is disabled. Configure everything in application.yml.

dockerコンテナを用いたCLI利用手順 / CLI Usage Guide with a Docker Container

CLI 実行結果

ロード実行例（--load COMMON）

$ java -Dspring.config.additional-location=file:conf/ -jar flexdblink.jar --load COMMON

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::               (v2.7.18)

2025-08-17 23:53:28.743  INFO 24625 --- [           main] io.github.yok.flexdblink.Main            : Starting Main v0.1.0 using Java 11.0.27 on okawauchi with PID 24625
2025-08-17 23:53:28.745  INFO 24625 --- [           main] io.github.yok.flexdblink.Main            : No active profile set, falling back to 1 default profile: "default"
2025-08-17 23:53:29.287  INFO 24625 --- [           main] io.github.yok.flexdblink.Main            : Started Main in 0.938 seconds (JVM running for 1.311)
2025-08-17 23:53:29.289  INFO 24625 --- [           main] io.github.yok.flexdblink.Main            : Application started. Args: [--load, COMMON]
2025-08-17 23:53:29.290  INFO 24625 --- [           main] io.github.yok.flexdblink.Main            : Mode: load, Scenario: COMMON, Target DBs: [DB1]
2025-08-17 23:53:29.291  INFO 24625 --- [           main] io.github.yok.flexdblink.Main            : Starting data load. Scenario [COMMON], Target DBs [DB1]
2025-08-17 23:53:29.293  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : === DataLoader started (mode=COMMON, target DBs=[DB1]) ===
2025-08-17 23:53:29.947  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : Generated table-ordering.txt: load/pre/DB1/table-ordering.txt
2025-08-17 23:53:29.953  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Excluded tables: [flyway_schema_history]
2025-08-17 23:53:30.039  INFO 24625 --- [           main] i.g.y.f.parser.DataLoaderFactory         : Resolved dataset file: BINARY_TEST_TABLE.csv
2025-08-17 23:53:30.059  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[BINARY_TEST_TABLE] rows=2
2025-08-17 23:53:30.060  INFO 24625 --- [           main] i.g.y.f.db.OracleDialectHandler          :   Extracting LOB columns from: load/pre/DB1/BINARY_TEST_TABLE.csv
2025-08-17 23:53:30.193  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[BINARY_TEST_TABLE] Initial | inserted=2
2025-08-17 23:53:30.196  INFO 24625 --- [           main] i.g.y.f.parser.DataLoaderFactory         : Resolved dataset file: CHAR_CLOB_TEST_TABLE.csv
2025-08-17 23:53:30.198  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[CHAR_CLOB_TEST_TABLE] rows=2
2025-08-17 23:53:30.198  INFO 24625 --- [           main] i.g.y.f.db.OracleDialectHandler          :   Extracting LOB columns from: load/pre/DB1/CHAR_CLOB_TEST_TABLE.csv
2025-08-17 23:53:30.245  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[CHAR_CLOB_TEST_TABLE] Initial | inserted=2
2025-08-17 23:53:30.247  INFO 24625 --- [           main] i.g.y.f.parser.DataLoaderFactory         : Resolved dataset file: DATE_TIME_TEST_TABLE.csv
2025-08-17 23:53:30.249  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[DATE_TIME_TEST_TABLE] rows=4
2025-08-17 23:53:30.249  INFO 24625 --- [           main] i.g.y.f.db.OracleDialectHandler          :   Extracting LOB columns from: load/pre/DB1/DATE_TIME_TEST_TABLE.csv
2025-08-17 23:53:30.281  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[DATE_TIME_TEST_TABLE] Initial | inserted=4
2025-08-17 23:53:30.283  INFO 24625 --- [           main] i.g.y.f.parser.DataLoaderFactory         : Resolved dataset file: NO_PK_TABLE.csv
2025-08-17 23:53:30.285  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[NO_PK_TABLE] rows=2
2025-08-17 23:53:30.285  INFO 24625 --- [           main] i.g.y.f.db.OracleDialectHandler          :   Extracting LOB columns from: load/pre/DB1/NO_PK_TABLE.csv
2025-08-17 23:53:30.306  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[NO_PK_TABLE] Initial | inserted=2
2025-08-17 23:53:30.308  INFO 24625 --- [           main] i.g.y.f.parser.DataLoaderFactory         : Resolved dataset file: NUMERIC_TEST_TABLE.csv
2025-08-17 23:53:30.310  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[NUMERIC_TEST_TABLE] rows=3
2025-08-17 23:53:30.310  INFO 24625 --- [           main] i.g.y.f.db.OracleDialectHandler          :   Extracting LOB columns from: load/pre/DB1/NUMERIC_TEST_TABLE.csv
2025-08-17 23:53:30.332  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[NUMERIC_TEST_TABLE] Initial | inserted=3
2025-08-17 23:53:30.334  INFO 24625 --- [           main] i.g.y.f.parser.DataLoaderFactory         : Resolved dataset file: SAMPLE_BLOB_TABLE.csv
2025-08-17 23:53:30.336  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[SAMPLE_BLOB_TABLE] rows=2
2025-08-17 23:53:30.336  INFO 24625 --- [           main] i.g.y.f.db.OracleDialectHandler          :   Extracting LOB columns from: load/pre/DB1/SAMPLE_BLOB_TABLE.csv
2025-08-17 23:53:30.358  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[SAMPLE_BLOB_TABLE] Initial | inserted=2
2025-08-17 23:53:30.359  INFO 24625 --- [           main] i.g.y.f.parser.DataLoaderFactory         : Resolved dataset file: VARCHAR2_CHAR_TEST_TABLE.csv
2025-08-17 23:53:30.361  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[VARCHAR2_CHAR_TEST_TABLE] rows=6
2025-08-17 23:53:30.361  INFO 24625 --- [           main] i.g.y.f.db.OracleDialectHandler          :   Extracting LOB columns from: load/pre/DB1/VARCHAR2_CHAR_TEST_TABLE.csv
2025-08-17 23:53:30.391  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[VARCHAR2_CHAR_TEST_TABLE] Initial | inserted=6
2025-08-17 23:53:30.393  INFO 24625 --- [           main] i.g.y.f.parser.DataLoaderFactory         : Resolved dataset file: XML_JSON_TEST_TABLE.csv
2025-08-17 23:53:30.394  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[XML_JSON_TEST_TABLE] rows=2
2025-08-17 23:53:30.394  INFO 24625 --- [           main] i.g.y.f.db.OracleDialectHandler          :   Extracting LOB columns from: load/pre/DB1/XML_JSON_TEST_TABLE.csv
2025-08-17 23:53:30.423  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[XML_JSON_TEST_TABLE] Initial | inserted=2
2025-08-17 23:53:30.427  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : Generated table-ordering.txt: load/COMMON/DB1/table-ordering.txt
2025-08-17 23:53:30.428  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Excluded tables: [flyway_schema_history]
2025-08-17 23:53:30.502  INFO 24625 --- [           main] i.g.y.f.parser.DataLoaderFactory         : Resolved dataset file: BINARY_TEST_TABLE.csv
2025-08-17 23:53:30.504  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[BINARY_TEST_TABLE] rows=4
2025-08-17 23:53:30.554  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[BINARY_TEST_TABLE] Deleted duplicates by primary key → 2
2025-08-17 23:53:30.558  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[BINARY_TEST_TABLE] Scenario (INSERT only) | inserted=2
2025-08-17 23:53:30.560  INFO 24625 --- [           main] i.g.y.f.parser.DataLoaderFactory         : Resolved dataset file: CHAR_CLOB_TEST_TABLE.csv
2025-08-17 23:53:30.561  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[CHAR_CLOB_TEST_TABLE] rows=2
2025-08-17 23:53:30.580  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[CHAR_CLOB_TEST_TABLE] Deleted duplicates by primary key → 1
2025-08-17 23:53:30.588  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[CHAR_CLOB_TEST_TABLE] Scenario (INSERT only) | inserted=1
2025-08-17 23:53:30.590  INFO 24625 --- [           main] i.g.y.f.parser.DataLoaderFactory         : Resolved dataset file: DATE_TIME_TEST_TABLE.csv
2025-08-17 23:53:30.592  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[DATE_TIME_TEST_TABLE] rows=4
2025-08-17 23:53:30.622  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[DATE_TIME_TEST_TABLE] Deleted duplicates by primary key → 3
2025-08-17 23:53:30.625  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[DATE_TIME_TEST_TABLE] Scenario (INSERT only) | inserted=1
2025-08-17 23:53:30.626  INFO 24625 --- [           main] i.g.y.f.parser.DataLoaderFactory         : Resolved dataset file: NO_PK_TABLE.csv
2025-08-17 23:53:30.628  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[NO_PK_TABLE] rows=4
2025-08-17 23:53:30.736  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[NO_PK_TABLE] Deleted duplicates by all columns → 2
2025-08-17 23:53:30.739  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[NO_PK_TABLE] Scenario (INSERT only) | inserted=2
2025-08-17 23:53:30.741  INFO 24625 --- [           main] i.g.y.f.parser.DataLoaderFactory         : Resolved dataset file: NUMERIC_TEST_TABLE.csv
2025-08-17 23:53:30.742  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[NUMERIC_TEST_TABLE] rows=5
2025-08-17 23:53:30.761  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[NUMERIC_TEST_TABLE] Deleted duplicates by primary key → 3
2025-08-17 23:53:30.765  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[NUMERIC_TEST_TABLE] Scenario (INSERT only) | inserted=2
2025-08-17 23:53:30.766  INFO 24625 --- [           main] i.g.y.f.parser.DataLoaderFactory         : Resolved dataset file: SAMPLE_BLOB_TABLE.csv
2025-08-17 23:53:30.768  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[SAMPLE_BLOB_TABLE] rows=2
2025-08-17 23:53:30.786  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[SAMPLE_BLOB_TABLE] Deleted duplicates by primary key → 1
2025-08-17 23:53:30.790  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[SAMPLE_BLOB_TABLE] Scenario (INSERT only) | inserted=1
2025-08-17 23:53:30.792  INFO 24625 --- [           main] i.g.y.f.parser.DataLoaderFactory         : Resolved dataset file: VARCHAR2_CHAR_TEST_TABLE.csv
2025-08-17 23:53:30.794  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[VARCHAR2_CHAR_TEST_TABLE] rows=4
2025-08-17 23:53:30.813  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[VARCHAR2_CHAR_TEST_TABLE] Deleted duplicates by primary key → 4
2025-08-17 23:53:30.813  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[VARCHAR2_CHAR_TEST_TABLE] Scenario (INSERT only) | inserted=0
2025-08-17 23:53:30.815  INFO 24625 --- [           main] i.g.y.f.parser.DataLoaderFactory         : Resolved dataset file: XML_JSON_TEST_TABLE.csv
2025-08-17 23:53:30.817  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[XML_JSON_TEST_TABLE] rows=1
2025-08-17 23:53:30.833  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[XML_JSON_TEST_TABLE] Deleted duplicates by primary key → 1
2025-08-17 23:53:30.833  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : [DB1] Table[XML_JSON_TEST_TABLE] Scenario (INSERT only) | inserted=0
2025-08-17 23:53:30.836  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : === DataLoader finished ===
2025-08-17 23:53:30.837  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : ===== Summary =====
2025-08-17 23:53:30.837  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : DB[DB1]:
2025-08-17 23:53:30.841  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  :   Table[BINARY_TEST_TABLE       ] Total=2
2025-08-17 23:53:30.841  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  :   Table[CHAR_CLOB_TEST_TABLE    ] Total=2
2025-08-17 23:53:30.841  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  :   Table[DATE_TIME_TEST_TABLE    ] Total=2
2025-08-17 23:53:30.841  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  :   Table[NO_PK_TABLE             ] Total=2
2025-08-17 23:53:30.841  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  :   Table[NUMERIC_TEST_TABLE      ] Total=2
2025-08-17 23:53:30.841  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  :   Table[SAMPLE_BLOB_TABLE       ] Total=2
2025-08-17 23:53:30.841  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  :   Table[VARCHAR2_CHAR_TEST_TABLE] Total=2
2025-08-17 23:53:30.841  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  :   Table[XML_JSON_TEST_TABLE     ] Total=1
2025-08-17 23:53:30.841  INFO 24625 --- [           main] i.github.yok.flexdblink.core.DataLoader  : == Data loading to all DBs has completed ==
2025-08-17 23:53:30.841  INFO 24625 --- [           main] io.github.yok.flexdblink.Main            : Data load completed. Scenario [COMMON]

ダンプ例（--dump COMMON）

$ java -Dspring.config.additional-location=file:conf/ -jar flexdblink.jar --dump COMMON

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::               (v2.7.18)

2025-08-17 23:47:06.192  INFO 19573 --- [           main] io.github.yok.flexdblink.Main            : Starting Main v0.1.0 using Java 11.0.27 on okawauchi with PID 19573
2025-08-17 23:47:06.195  INFO 19573 --- [           main] io.github.yok.flexdblink.Main            : No active profile set, falling back to 1 default profile: "default"
2025-08-17 23:47:06.752  INFO 19573 --- [           main] io.github.yok.flexdblink.Main            : Started Main in 0.974 seconds (JVM running for 1.361)
2025-08-17 23:47:06.754  INFO 19573 --- [           main] io.github.yok.flexdblink.Main            : Application started. Args: [--dump, COMMON]
2025-08-17 23:47:06.755  INFO 19573 --- [           main] io.github.yok.flexdblink.Main            : Mode: dump, Scenario: COMMON, Target DBs: [DB1]
2025-08-17 23:47:06.756  INFO 19573 --- [           main] io.github.yok.flexdblink.Main            : Starting data dump. Scenario [COMMON], Target DBs [[DB1]]
2025-08-17 23:47:06.758  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : [DB1] === DB dump started ===
2025-08-17 23:47:07.559  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : [DB1] Table[BINARY_TEST_TABLE] CSV dump completed (UTF-8)
2025-08-17 23:47:07.591  INFO 19573 --- [           main] i.g.y.f.db.OracleDialectHandler          :   LOB file written: dump/COMMON/DB1/files/sample3.bin
2025-08-17 23:47:07.593  INFO 19573 --- [           main] i.g.y.f.db.OracleDialectHandler          :   LOB file written: dump/COMMON/DB1/files/sample4.bin
2025-08-17 23:47:07.599  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : [DB1] Table[BINARY_TEST_TABLE] dumped-records=2, BLOB/CLOB file-outputs=2
2025-08-17 23:47:07.610  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : [DB1] Table[CHAR_CLOB_TEST_TABLE] CSV dump completed (UTF-8)
2025-08-17 23:47:07.616  INFO 19573 --- [           main] i.g.y.f.db.OracleDialectHandler          :   LOB file written: dump/COMMON/DB1/files/char_clob_2.clob
2025-08-17 23:47:07.617  INFO 19573 --- [           main] i.g.y.f.db.OracleDialectHandler          :   LOB file written: dump/COMMON/DB1/files/char_clob_2.nclob
2025-08-17 23:47:07.618  INFO 19573 --- [           main] i.g.y.f.db.OracleDialectHandler          :   LOB file written: dump/COMMON/DB1/files/char_clob_3.clob
2025-08-17 23:47:07.618  INFO 19573 --- [           main] i.g.y.f.db.OracleDialectHandler          :   LOB file written: dump/COMMON/DB1/files/char_clob_3.nclob
2025-08-17 23:47:07.623  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : [DB1] Table[CHAR_CLOB_TEST_TABLE] dumped-records=2, BLOB/CLOB file-outputs=4
2025-08-17 23:47:07.662  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : [DB1] Table[DATE_TIME_TEST_TABLE] CSV dump completed (UTF-8)
2025-08-17 23:47:07.687  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : [DB1] Table[DATE_TIME_TEST_TABLE] dumped-records=2, BLOB/CLOB file-outputs=0
2025-08-17 23:47:07.693  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : [DB1] Table[NO_PK_TABLE] CSV dump completed (UTF-8)
2025-08-17 23:47:07.699  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : [DB1] Table[NO_PK_TABLE] dumped-records=2, BLOB/CLOB file-outputs=0
2025-08-17 23:47:07.708  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : [DB1] Table[NUMERIC_TEST_TABLE] CSV dump completed (UTF-8)
2025-08-17 23:47:07.713  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : [DB1] Table[NUMERIC_TEST_TABLE] dumped-records=2, BLOB/CLOB file-outputs=0
2025-08-17 23:47:07.723  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : [DB1] Table[SAMPLE_BLOB_TABLE] CSV dump completed (UTF-8)
2025-08-17 23:47:07.726  INFO 19573 --- [           main] i.g.y.f.db.OracleDialectHandler          :   LOB file written: dump/COMMON/DB1/files/LeapSecond_3.dat
2025-08-17 23:47:07.727  INFO 19573 --- [           main] i.g.y.f.db.OracleDialectHandler          :   LOB file written: dump/COMMON/DB1/files/LeapSecond_2.dat
2025-08-17 23:47:07.730  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : [DB1] Table[SAMPLE_BLOB_TABLE] dumped-records=2, BLOB/CLOB file-outputs=2
2025-08-17 23:47:07.739  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : [DB1] Table[VARCHAR2_CHAR_TEST_TABLE] CSV dump completed (UTF-8)
2025-08-17 23:47:07.747  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : [DB1] Table[VARCHAR2_CHAR_TEST_TABLE] dumped-records=2, BLOB/CLOB file-outputs=0
2025-08-17 23:47:07.756  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : [DB1] Table[XML_JSON_TEST_TABLE] CSV dump completed (UTF-8)
2025-08-17 23:47:07.760  INFO 19573 --- [           main] i.g.y.f.db.OracleDialectHandler          :   LOB file written: dump/COMMON/DB1/files/json_data_1.json
2025-08-17 23:47:07.760  INFO 19573 --- [           main] i.g.y.f.db.OracleDialectHandler          :   LOB file written: dump/COMMON/DB1/files/xml_data_1.xml
2025-08-17 23:47:07.763  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : [DB1] Table[XML_JSON_TEST_TABLE] dumped-records=1, BLOB/CLOB file-outputs=2
2025-08-17 23:47:07.764  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : ===== Summary =====
2025-08-17 23:47:07.764  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : DB[DB1]:
2025-08-17 23:47:07.769  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  :   Table[BINARY_TEST_TABLE       ] Total=2
2025-08-17 23:47:07.769  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  :   Table[CHAR_CLOB_TEST_TABLE    ] Total=2
2025-08-17 23:47:07.769  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  :   Table[DATE_TIME_TEST_TABLE    ] Total=2
2025-08-17 23:47:07.769  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  :   Table[NO_PK_TABLE             ] Total=2
2025-08-17 23:47:07.769  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  :   Table[NUMERIC_TEST_TABLE      ] Total=2
2025-08-17 23:47:07.769  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  :   Table[SAMPLE_BLOB_TABLE       ] Total=2
2025-08-17 23:47:07.770  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  :   Table[VARCHAR2_CHAR_TEST_TABLE] Total=2
2025-08-17 23:47:07.770  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  :   Table[XML_JSON_TEST_TABLE     ] Total=1
2025-08-17 23:47:07.770  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : [DB1] === DB dump completed ===
2025-08-17 23:47:07.772  INFO 19573 --- [           main] i.github.yok.flexdblink.core.DataDumper  : === All DB dumps completed: Output [dump/COMMON] ===
2025-08-17 23:47:07.772  INFO 19573 --- [           main] io.github.yok.flexdblink.Main            : Data dump completed. Scenario [COMMON]

ディレクトリ構成（`data-path` 配下）

<data-path>/
  load/
    pre/
      <DB_ID>/
        TABLE_A.csv
        TABLE_B.csv
        table-ordering.txt   # 省略可：無ければ自動生成
                             # Optional: auto-generated if missing
    <scenario-name>/
      <DB_ID>/
        ...
  files/
    ...                      # LOB 実体（CSV からは file:xxx で参照）
                             # LOB payloads (referenced from CSV as file:xxx)
  dump/
    <scenario-name>/
      <DB_ID>/
        *.csv                # ダンプ結果
                             # Dump results

LOB の扱い

ロード時: CSV セルに file:Foo_001.bin のように書くと、<data-path>/files/Foo_001.bin を読み込んで投入します。
ダンプ時: LOB 列は <data-path>/files/ に実体を書き出し、CSV 側には file:... を出力。ファイル名は file-patterns でテーブル／列ごとにテンプレート指定可能（後述）。

Handling LOBs

On load: If a CSV cell contains file:Foo_001.bin, the tool reads and inserts <data-path>/files/Foo_001.bin.
On dump: LOB columns are written to <data-path>/files/, and the CSV contains file:... references. Filenames can be templated per table/column via file-patterns (see below).

設定ファイル（`application.yml`）

FlexDBLink の CLI は application.yml を読み込んで動作します（標準の Spring Boot 外部設定解決に準拠）。主な探索場所: 実行ディレクトリ直下、./config/、クラスパス内など。

Note: Main はコマンドライン引数による Spring のプロパティ上書きを無効化（setAddCommandLineProperties(false)）。設定は YAML ファイル側で管理してください。

Configuration file (`application.yml`)

The FlexDBLink CLI operates by loading application.yml, adhering to Spring Boot’s standard externalized configuration resolution. Primary lookup locations include: the working directory, ./config/, and the classpath.

Note: Main disables overriding Spring properties via command-line arguments (setAddCommandLineProperties(false)). Please manage settings in the YAML file.

Sample

data-path: /absolute/path/to/project-root

dbunit:
  dataTypeFactoryMode: ORACLE
  lob-dir-name: files
  pre-dir-name: pre
  csv:
    format:
      date: "yyyy-MM-dd"
      time: "HH:mm:ss"
      dateTime: "yyyy-MM-dd HH:mm:ss"
      dateTimeWithMillis: "yyyy-MM-dd HH:mm:ss.SSS"
  config:
    allow-empty-fields: true
    batched-statements: true
    batch-size: 100

connections:
  - id: DB1
    url: jdbc:oracle:thin:@localhost:1521/OPEDB
    user: oracle
    password: password
    driver-class: oracle.jdbc.OracleDriver

file-patterns:
  SAMPLE_BLOB_TABLE:
    FILE_DATA: "LeapSecond_{ID}.dat"
  BINARY_TEST_TABLE:
    BLOB_COL: "sample{ID}.bin"
  CHAR_CLOB_TEST_TABLE:
    CLOB_COL: "char_clob_{ID}.clob"
    NCLOB_COL: "char_clob_{ID}.nclob"
  XML_JSON_TEST_TABLE:
    JSON_DATA: "json_data_{ID}.json"
    XML_DATA: "xml_data_{ID}.xml"

dump:
  exclude-tables:
    - flyway_schema_history

主な項目

data-path (必須) — CSV と外部ファイル（LOB）の ベース絶対パス。load/, dump/, files/ をここから解決。
dbunit.* — 方言・CSV フォーマット・DBUnit 設定。lob-dir-name は files を推奨。
connections[] — CLI が対象とする接続。id は --target、および load/<scenario>/<DB_ID>/ と対応。
file-patterns — ダンプ時の LOB 出力ファイル名テンプレート（同一行の {列名} で置換）。
dump.exclude-tables — ダンプ対象外テーブル（例: flyway_schema_history）。

Key items

data-path (required) — Base absolute path for CSVs and external (LOB) files. load/, dump/, and files/ are resolved from here.
dbunit.* — Dialect, CSV format, and DBUnit settings. It’s recommended to set lob-dir-name to files.
connections[] — Connections targeted by the CLI. Each id maps to --target and to load/<scenario>/<DB_ID>/.
file-patterns — LOB output filename templates used during dump (placeholders like {columnName} are replaced using values from the same row).
dump.exclude-tables — Tables to exclude from dumping (e.g., flyway_schema_history).

CSV 仕様と LOB ファイル

ヘッダ付き CSV（UTF-8）
値が file:xxx のセルは <data-path>/files/xxx を参照（ロード時）またはダンプ時同様の形式で出力します。

データサンプル

ID,FILE_DATA
001,file:LeapSecond_001.dat
002,file:LeapSecond_002.dat

CSV format and LOB files

CSV with header (UTF-8)
Cells whose value is file:xxx refer to <data-path>/files/xxx when loading, and the dump emits the same file:... form.

Data sample

ID,FILE_DATA
001,file:LeapSecond_001.dat
002,file:LeapSecond_002.dat

JUnit 5 サポート

@LoadData アノテーションを付与すると、テスト実行前に CSV / JSON / YAML / XML などのデータファイルを自動投入し、テスト終了時に自動的にロールバックされます。 Spring のテストトランザクション（@Transactional）に参加するため、各テストメソッドの終了時点で確実にデータベースの状態が元に戻ります。 本機能は Spring Test の実行コンテキストが必須です（@SpringBootTest / @MybatisTest / @ExtendWith(SpringExtension.class) など）。

@LoadData は クラスレベル と メソッドレベル の両方に付与できます。

クラスに付与した場合、そのテストクラス全体に対してデータ投入が行われます。
メソッドに付与した場合、そのテストメソッド専用のデータ投入が行われます。

この仕組みにより、テストデータは SQL スクリプトを記述せずにテキストファイルで管理でき、Git などによる構成管理・差分追跡・環境再現が容易になります。

JUnit 5 Support

With the @LoadData annotation, datasets (CSV / JSON / YAML / XML) are automatically loaded before test execution and rolled back afterward. Because it integrates with Spring’s test transaction (@Transactional), the database state is reliably restored at the end of each test method. A Spring Test execution context is required (e.g., @SpringBootTest, @MybatisTest, or @ExtendWith(SpringExtension.class)).

The @LoadData annotation can be placed on both the class level and the method level:

At the class level, data is loaded once for the entire test class.
At the method level, data is loaded specifically for that test method.

This allows test data to be managed as plain text files — without writing SQL — enabling easy version control with Git, clear diff tracking, and reproducibility across environments.

Sample （MyBatis マッパーの読み取りテスト）

@MybatisTest
@AutoConfigureTestDatabase(replace = AutoConfigureTestDatabase.Replace.NONE)
@Import(BbbDataSourceDevelopmentConfig.class)
// クラス全体に適用
@LoadData(scenario = "NORMAL", dbNames = DbName.Constants.BBB)
class LeapSecondFileMapperTest {

    @Autowired
    private LeapSecondFileMapper mapper;

    @Test
    // メソッド単位に適用
    @LoadData(scenario = "NORMAL", dbNames = DbName.Constants.BBB)
    void selectLatest_正常ケース_指定fileNameの最新レコードが取得できること() {
        LeapSecondFileRecord record = mapper.selectLatest("test_file.txt");

        assertNotNull(record);
        assertEquals("ID002", record.getIdentifier());
        assertEquals("test_file.txt", record.getFileName());
        assertEquals("2025-08-16T09:00", record.getUpdateTime().toString().substring(0, 16));

        String fileContent = new String(record.getFileData(), StandardCharsets.UTF_8);
        assertEquals("Hello Leap Second", fileContent.trim());
    }
}

リソース配置規約（JUnit 5 拡張の規約）

# 複数DB
src/test/resources/<パッケージ階層>/<テストクラス名>/<シナリオ>/input/<DB名>/*.csv
src/test/resources/<パッケージ階層>/<テストクラス名>/<シナリオ>/input/<DB名>/files/*   # LOB 実体

# 単一DB
src/test/resources/<パッケージ階層>/<テストクラス名>/<シナリオ>/input/*.csv
src/test/resources/<パッケージ階層>/<テストクラス名>/<シナリオ>/input/files/*        # LOB 実体

この規約以外の場所はエラーとします。

@LoadData(scenario = "...", dbNames = "...")
- scenario: シナリオ（ディレクトリ）名
- dbNames: 1 つまたは複数の DB 名（サブディレクトリ）。省略すると input/ 直下の単一DBデータが使われる（マルチDB配置の場合は対象DB名を明示的に列挙してください）

Resource layout conventions (JUnit 5 extension)

# Multiple DBs
src/test/resources/<package path>/<TestClassName>/<scenario>/input/<dbName>/*.csv
src/test/resources/<package path>/<TestClassName>/<scenario>/input/<dbName>/files/*   # LOB payloads

# Single DB
src/test/resources/<package path>/<TestClassName>/<scenario>/input/*.csv
src/test/resources/<package path>/<TestClassName>/<scenario>/input/files/*            # LOB payloads

Any other location is treated as an error.

@LoadData(scenario = "...", dbNames = "...")
- scenario: Scenario (directory) name.
- dbNames: One or more DB names (subdirectories). Omitting this runs in single-DB mode using the files directly under input/; list the DB folders explicitly when you want to load multiple targets.

ベストプラクティス

table-ordering.txt 外部キーなど参照制約を考慮した投入順序を明示化できます（1 行 1 テーブル名）。未配置の場合は、利用するデータファイル群（CSV/JSON/YAML/XML）から自動生成されます。
除外テーブル マイグレーション管理テーブルなど、投入やダンプの対象外とすべきテーブルは dump.exclude-tables に指定してください。
時刻フォーマットの統一 日付・時刻のフォーマットは dbunit.csv.format.* で統一して設定しておくと、チーム全体でのデータ管理が安定します。
テキストデータによる構成管理 SQL スクリプトに依存せず、CSV/JSON/YAML/XML でデータを表現することで、Git 等による構成管理・差分追跡・環境再現が容易になります。

Best Practices

table-ordering.txt Explicitly define the load order with referential constraints in mind (one table name per line). If missing, it is auto-generated from the dataset files (CSV/JSON/YAML/XML).
Exclude tables Exclude migration/housekeeping tables by listing them in dump.exclude-tables.
Unified time formats Configure dbunit.csv.format.* for consistent date/time formats across the team.
Manage data as text files Instead of relying on SQL scripts, represent datasets as CSV/JSON/YAML/XML files. This enables version control with Git, easy diff tracking, and reproducibility across environments.

既知事項 / Notes

内部で DBUnit を利用していますが、API は FlexDBLink で抽象化しています。
現状は Oracle に最適化された実装です。その他 RDBMS への拡張は順次対応予定です。

Internally uses DBUnit, but the API is abstracted by FlexDBLink.
The current implementation is optimized for Oracle; support for other RDBMS will be added progressively.

ライセンス / License

本リポジトリは Apache License 2.0 で提供されています。詳しくは LICENSE を参照してください。
This repository is distributed under the Apache License 2.0. See LICENSE for details.

貢献 / Contributing

バグ報告、機能提案、大歓迎です。Issue / PR をお待ちしています。
Bug reports and feature requests are very welcome. We look forward to your Issues and PRs.

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AGENTS.md		AGENTS.md
LICENSE.txt		LICENSE.txt
README.md		README.md
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FlexDBLink

特長

Features

Temporal Formats and Type Coverage (Oracle / PostgreSQL / MySQL / SQL Server) / 時刻フォーマットと対応型（Oracle / PostgreSQL / MySQL / SQL Server）

Oracle

PostgreSQL

MySQL

SQL Server

前提

Requirements

CLI ビルド方法 / CLI Build

CLI の使い方 / CLI Usage

コマンド

dockerコンテナを用いたCLI利用手順 / CLI Usage Guide with a Docker Container

CLI 実行結果

ディレクトリ構成（data-path 配下）

LOB の扱い

Handling LOBs

設定ファイル（application.yml）

Configuration file (application.yml)

Sample

CSV 仕様と LOB ファイル

CSV format and LOB files

JUnit 5 サポート

JUnit 5 Support

Sample （MyBatis マッパーの読み取りテスト）

ベストプラクティス

Best Practices

既知事項 / Notes

ライセンス / License

貢献 / Contributing

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ディレクトリ構成（`data-path` 配下）

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