BackendFactory

This class is a factory that provides concrete implementations of the Bar abstract class.

See also

Bar, BasicBar, and ModernBar.

Methods

Public methods

• BarFactory$get()

• BarFactory$clone()

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Method get()

Obtain a concrete implementation of the abstract Bar class of the specified type.

Usage

BarFactory$get(type)

Arguments

type

A character string specifying the type of the Bar to instantiate. Possible values are "modern" and "basic". See the Details section for more information.

Details

When type = "modern" a ModernBar instance is created and returned. When type = "basic" a BasicBar instance is provided instead.

Returns

A concrete implementation of the class Bar. It throws an error if the requested bar type is not supported.

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Method clone()

The objects of this class are cloneable with this method.

Usage

BarFactory$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.

Examples

# Create a bar factory.
bar_factory <- BarFactory$new()

# Get a modern bar instance.
bar <- bar_factory$get("modern")

# Check the class of the bar instance.
class(bar)
#> [1] "ModernBar" "Bar"       "R6"       

# Get a basic bar instance.
bar <- bar_factory$get("basic")

# Check the class of the bar instance.
class(bar)
#> [1] "BasicBar" "Bar"      "R6"