ExportFactoryT

ExportFactoryT is a template-based factory component used in software libraries to create exporters for data of a specified type. It specializes the factory pattern to decouple the creation of export handlers from their use, enabling a pluggable set of formats and backends.

Design and purpose

ExportFactoryT is designed to manage the lifecycle and selection of exporter objects that convert data into various serialized forms. The template parameter T typically represents the input data type or the target export domain, while concrete exporters implement the logic for a particular format. The factory enables extension by registering new exporter creators without modifying existing client code, supporting a flexible, format-driven export pipeline.

Typical API and behavior

In common implementations, ExportFactoryT maintains a registry mapping format identifiers (such as "CSV", "JSON", or "XML") to exporter creators. It provides methods to register and unregister exporters, query supported formats, and create an exporter instance for a given format. The create operation may accept optional parameters (such as conversion options or output streams) and return a type-erased or specialized exporter that handles the data transformation for that format. The design often uses function objects or std::function-like callbacks to instantiate exporters, enabling easy extension and customization.

Usage scenarios

ExportFactoryT is used when an application needs to export data to multiple formats without embedding format-specific logic throughout the codebase. A typical workflow involves registering format exporters, selecting a desired format at runtime, obtaining an exporter from the factory, and invoking it to serialize data to the target destination.

Relation to broader concepts

ExportFactoryT aligns with the factory pattern, plugin architectures, and the strategy of separating format-specific serialization from core data structures. It may interact with an ExportRegistry or ExporterBase abstractions to support heterogeneous exporters.

See also

Factory pattern, Plugin architecture, Serialization, Exporter, ExportRegistry.