DBI resource connector

DBI resource connector

DBI resource connector

Format

A R6 object of class DBIResourceConnector

Details

Makes a DBI connection from a resource description, used in SQLResourceClient that is based on DBI.

Methods

Public methods

• DBIResourceConnector$new()

• DBIResourceConnector$isFor()

• DBIResourceConnector$createDBIConnection()

• DBIResourceConnector$getTableName()

• DBIResourceConnector$readDBTable()

• DBIResourceConnector$readDBTibble()

• DBIResourceConnector$closeDBIConnection()

• DBIResourceConnector$clone()

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Method new()

Creates a new DBIResourceConnector instance

Usage

DBIResourceConnector$new()

Returns

A DBIResourceConnector object.

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Method isFor()

Check that the provided parameter is of class "resource".

Usage

DBIResourceConnector$isFor(resource)

Arguments

resource

The resource object to validate.

Returns

A logical.

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Method createDBIConnection()

Stub function which subclasses will implement to create a DBI connection object from a resource.

Usage

DBIResourceConnector$createDBIConnection(resource)

Arguments

resource

A valid resource object.

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Method getTableName()

Get the SQL table name from the resource URL.

Usage

DBIResourceConnector$getTableName(resource)

Arguments

resource

A valid resource object.

Returns

The SQL table name.

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Method readDBTable()

Read a table as a vanilla tibble using DBI connection object.

Usage

DBIResourceConnector$readDBTable(conn, resource)

Arguments

conn

A DBI connection object.

resource

A valid resource object.

Returns

A vanilla tibble.

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Method readDBTibble()

Read a table as a SQL tibble using DBI connection object.

Usage

DBIResourceConnector$readDBTibble(conn, resource)

Arguments

conn

A DBI connection object.

resource

A valid resource object.

Returns

A SQL tibble.

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Method closeDBIConnection()

Disconnect the DBI connection.

Usage

DBIResourceConnector$closeDBIConnection(conn)

Arguments

conn

A DBI connection object.

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Method clone()

The objects of this class are cloneable with this method.

Usage

DBIResourceConnector$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.