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Core API

Datasets

All dataset-related classes are located in the package org.silkframework.dataset.

DatasetSpec

Used to represent a dataset task in a project. Extends TaskSpec and is on the same level as LinkSpec, TransformSpec, etc.

Currently, provides two properties

  • The Dataset Plugin instance (e.g., CsvDataset)
  • The URI-property

In the future, it can be extended with other dataset type agnostic properties.

Dataset

A dataset plugin, e.g., CsvDataset.

In the future, should only be declarative (i.e., hold all dataset specific properties). It should not contain execution/access methods.

DatasetExecutor

Executes a specific Dataset plugin. There might be multiple executors for the same dataset (e.g., for different execution types).

DatasetAccess

Contains access methods to read and write data from/to a dataset.

Given a dataset, the corresponding DatasetAccess instance is provided by its DatasetExecutor. It can be retrieved using the ExecutorRegistry. Multiple dataset executors may be defined for the same Dataset. For instance, given the CsvDataset class, LocalCsvDatasetExecutor and SparkCsvDatasetExecutor my provide different DatasetAccess implementations.