9.7.3. JTA トランザクションの開始

UserTransaction のインスタンスを取得します。

• JNDI

  new InitialContext().lookup("java:comp/UserTransaction")

  Copy to Clipboard Toggle word wrap

• インジェクション

  @Resource UserTransaction userTransaction;

  Copy to Clipboard Toggle word wrap

• EjbContext

  EjbContext.getUserTransaction()

  Copy to Clipboard Toggle word wrap

データソースに接続後、UserTransaction.begin() を呼び出します。

...
try {
    System.out.println("\nCreating connection to database: "+url);
    stmt = conn.createStatement();  // non-tx statement
    try {
        System.out.println("Starting top-level transaction.");
        UserTransaction.begin();
        stmtx = conn.createStatement(); // will be a tx-statement
        ...
    }
}

...
try {
    System.out.println("\nCreating connection to database: "+url);
    stmt = conn.createStatement();  // non-tx statement
    try {
        System.out.println("Starting top-level transaction.");
        UserTransaction.begin();
        stmtx = conn.createStatement(); // will be a tx-statement
        ...
    }
}