connector (version 1.0.0)

remove_cnt: Remove content from the connector

Description

Generic implementing of how to remove content from different connectors:

• ConnectorDBI: Uses DBI::dbRemoveTable() to remove the table from a DBI connection.

• ConnectorFS: Uses fs::file_delete() to delete the file.

• ConnectorLogger: Logs the remove operation and calls the underlying connector method.

Usage

remove_cnt(connector_object, name, ...)
# S3 method for ConnectorDBI
remove_cnt(connector_object, name, ...)
# S3 method for ConnectorFS
remove_cnt(connector_object, name, ...)
# S3 method for ConnectorLogger
remove_cnt(connector_object, name, ...)

Value

invisible connector_object.

Arguments

connector_object

Connector The connector object to use.

name

character Name of the content to read, write, or remove. Typically the table name.

...

Additional arguments passed to the method for the individual connector.

Examples

# Remove table in a DBI database
cnt <- connector_dbi(RSQLite::SQLite())

cnt |>
  write_cnt(iris, "iris") |>
  list_content_cnt()

cnt |>
  remove_cnt("iris") |>
  list_content_cnt()

# Remove a file from the file storage

folder <- withr::local_tempdir("test", .local_envir = .GlobalEnv)

cnt <- connector_fs(folder)

cnt |>
  write_cnt("this is an example", "example.txt")
cnt |>
  list_content_cnt(pattern = "example.txt")

cnt |>
  read_cnt("example.txt")

cnt |>
  remove_cnt("example.txt")

cnt |>
  list_content_cnt(pattern = "example.txt")

# Add logging to a connector and remove content
folder <- withr::local_tempdir("test", .local_envir = .GlobalEnv)

cnt <- connectors(data = connector_fs(folder)) |> add_logs()

cnt$data |>
  write_cnt(iris, "iris.csv")

cnt$data |>
  remove_cnt("iris.csv")