Adding and populating a new store

@Configuration
public static class CustomProjectionStoreConfiguration {

	/**
	 * Define our custom store
	 */
	@Bean
	public IStoreDescription customProjectionStoreDescription() {
		return StartBuilding.store()
				.withStoreName("CustomProjectionStore")
				.withField("CustomProjection_AsOfDate", DatastoreConfig.STORE_DATE_FIELD_FORMAT).asKeyField()
				.withField("CustomProjection_RiskClass", ILiteralType.STRING).asKeyField()
				.withField("CustomProjected", ILiteralType.DOUBLE)
				.build();
	}

	/**
	 * Define a reference from the SA Cube's base store to our CustomProjectionStore store
	 */
	@Bean
	public IReferenceDescription customProjectionReferenceDescription() {
		var joinName = DatastoreConfig.ConcreteDatastoreConfig
				.joinName(
						SADatastoreConfig.SA_SENSITIVITIES_STORE_NAME,
						"CustomProjectionStore"
				);
		return StartBuilding.reference()
				.fromStore(SADatastoreConfig.SA_SENSITIVITIES_STORE_NAME)
				.toStore("CustomProjectionStore")
				.withName(joinName)
				.withMapping(SADatastoreConfig.AS_OF_DATE, "CustomProjection_AsOfDate")
				.withMapping(SADatastoreConfig.SA_SENSITIVITIES_STORE_RISK_CLASS, "CustomProjection_RiskClass")
				.build();
	}

	/**
	 * Add our custom Store and Reference into the overall Datastore Schema
	 */
	@Qualifier(SP_QUALIFIER__CUSTOMISATIONS)
	@Bean
	public DatastoreConfiguratorConsumer datastoreConfiguratorConsumer(
			IStoreDescription customStoreDescription,
			IReferenceDescription customStoreReference) {
		// Add our custom Store & Reference into the datastore schema:
		return datastoreConfigurator -> datastoreConfigurator
				.addStore(customStoreDescription)
				.addReference(customStoreReference);
	}
}

@Configuration
public static class CustomSourceConfig {

	/**
	 * Define a Source to load our custom topics through.
	 */
	@Bean
	LocalCsvSourceDescription customLocalCsvSourceDescription(CsvSourceDatasetConfigurationProperties csvSourceDataset) {
		return LocalCsvSourceDescription.builder("CustomSource", csvSourceDataset.getDataset() + AS_OF_DATE_SUBDIR)
				// Provide all custom topic names:
				.topicsToInclude(Set.of("CustomProjectionStore"))
				.build();
	}
}

@Configuration
public static class CustomTopicsConfig {
	/**
	 * Define the topic to load our Custom Projection file.
	 */
	@Bean
	@Qualifier
	public CsvTopicDescription customProjectionTopicDescription() {
		// Create the Topic Description:
		return CsvTopicDescription.builder("CustomProjectionStore", "glob:{**/,}CustomProjection*.csv")
				.build();
	}
}

@Configuration
public static class LoadCustomTopicOnInitialLoadConfig {

	@Autowired IDataLoadControllerService dataLoadControllerService;

	@Bean
	// Run before (-) / after (+) the default initial dated data load
	@Order(StartupSpringBeanOrder.INITIAL_DATA_LOAD + 1)
	@ConditionalOnInMemoryDatabase
	public ApplicationRunner customTopicInitialLoad() {
		return args -> {
			// Execute loading of our topic:
			var requestResult = dataLoadControllerService.execute(
					DlcLoadRequest.builder()
							.topics("CustomProjectionStore")
							.scope(DlcScope.of(Map.of(SCOPE__AS_OF_DATE, "2018-09-26")))
							.build()
			);
		};
	}
}