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 - [Box](https://github.com/codelibs/fess-ds-box)
 - [CSV](https://github.com/codelibs/fess-ds-csv)
 - [Database](https://github.com/codelibs/fess-ds-db)
 - [Dropbox](https://github.com/codelibs/fess-ds-dropbox)
 - [Elasticsearch](https://github.com/codelibs/fess-ds-elasticsearch)
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    // [Referrers] *comment only

    // ===================================================================================
    //                                                                             DB Meta
    //                                                                             =======
    @Override
    public FileConfigDbm asDBMeta() {
        return FileConfigDbm.getInstance();
    }

    @Override

    // [Referrers] *comment only

    // ===================================================================================
    //                                                                             DB Meta
    //                                                                             =======
    @Override
    public WebConfigDbm asDBMeta() {
        return WebConfigDbm.getInstance();
    }

    @Override

pkg database/sql, method (*Conn) QueryContext(context.Context, string, ...interface{}) (*Rows, error)
pkg database/sql, method (*Conn) QueryRowContext(context.Context, string, ...interface{}) *Row
pkg database/sql, method (*DB) Conn(context.Context) (*Conn, error)
pkg database/sql, type Conn struct
pkg database/sql, type Out struct
pkg database/sql, type Out struct, Dest interface{}
pkg database/sql, type Out struct, In bool

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 - [Database](https://github.com/codelibs/fess-ds-db)
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 - [Elasticsearch](https://github.com/codelibs/fess-ds-elasticsearch)
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	DB.Create(&user)

	// Update a single field of the user and verify that the changed address is not stored.
	newAge := uint(100)
	user.Account.Number = "new_account_number"
	db := DB.Model(&user).UpdateColumns(User{Age: newAge})

	if db.RowsAffected != 1 {
		t.Errorf("Expected RowsAffected=1 but instead RowsAffected=%v", db.RowsAffected)
	}

	// Verify that Age now=`newAge`.

  integrity sha512-abv/qOcuPfk3URPfDzmZU1LKmuw8kT+0nIHvKrKgFrwifol/doWcdA4ZqsWQ8ENrFKkd67Mfpo/LovbIUsbt3w==

mime-db@1.52.0:
  version "1.52.0"
  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.52.0.tgz#bbabcdc02859f4987301c856e3387ce5ec43bf70"
  integrity sha512-sPU4uV7dYlvtWJxwwxHD0PuihVNiE7TyAbQ5SWxDCB9mUYvOgroQOwYQQOKPJ8CIbE+1ETVlOoK1UC2nU3gYvg==

* `Field(index=True)` は、この列に対して SQL のインデックスを作成するよう SQLModel に指示します。これにより、この列でフィルタしてデータを読む場合に検索が高速になります。

    `str` と宣言されたものは、SQL の `TEXT`（データベースによっては `VARCHAR`）型の列になることを SQLModel は理解します。

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 - [Elasticsearch](https://github.com/codelibs/fess-ds-elasticsearch)
 - [Git](https://github.com/codelibs/fess-ds-git)

    Note over dep: Run code up to yield
    opt raise Exception
        dep -->> handler: Raise Exception
        handler -->> client: HTTP error response
    end
    dep ->> operation: Run dependency, e.g. DB session
    opt raise
        operation -->> dep: Raise Exception (e.g. HTTPException)
        opt handle
            dep -->> dep: Can catch exception, raise a new HTTPException, raise other exception
        end