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This page describes the extension points introduced in MR 4.0.0 that allow you to customize the schema selections through Spring Beans.

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Concept

Within Atoti Server, a cube is built on a set of fields defined by a schema selection from a datastore. Most schema selections are configured by default to select all fields in the base store. Therefore, fields added to those stores don’t require a customization to the schema selection. The extension points are intended to support use cases where the default behavior is inappropriate:
  • a field is added to the store for direct queries only, and shouldn’t be included in the cube
  • a key field is added to multiple stores and the references between them, and shouldn’t be selected multiple times
  • the selection of the common stores (e.g. Trade Attributes, BookHierarchy) needs to be changed
  • the selection for an entire datastore needs to be modified
For a custom configuration, all schema selections are configurable through the following beans:
Bean typeDetailsDatastores
SelectionDescriptionCreatorMain schema selection bean, which takes a datastore schema description and applies a series of selection API calls, resulting in a selection description.All datastores expose this bean.
BaseSelectionCreator<T>The base selection for a given datastore and base store name. Used as a parameter for the main bean, will be applied to the created selection description.All datastores expose and apply this bean.
ExtraSelectionApplier<T>Extra selections for a given datastore. Used as a parameter for the main bean, will be applied to the created selection description.All datastores apply this bean.
FieldsCollisionHandlerDefines the behavior when two fields in the schema selection have the same name. Available options are the Common Library ClosestExtFieldsCollisionHandler and either static members or custom implementations of the core FieldsCollisionHandler interface.All datastores expose this bean.
The T class used in the table above is an extension of the Atoti Server core CanUseOtherReference and CanBuild interfaces.

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Customizations

The customization Beans are annotated with a @Qualifier, explicitly defining the datastore to which the customization applies. All @Qualifier constants are defined in the SpringConstants class. The following qualifiers are available for the cubes in Atoti Market Risk:
ConstantQualifierTypeDescription
SP_QUALIFIER__PNL_FIELD_COLLISION_HANDLERpnl-field-collision-handlerFieldsCollisionHandlerThe field collision handler for the PLCube.
SP_QUALIFIER__PNL_SUMMARY_FIELD_COLLISION_HANDLERpnl-summary-field-collision-handlerFieldsCollisionHandlerThe field collision handler for the PL Summary Cube.
SP_QUALIFIER__SENSITIVITY_FIELD_COLLISION_HANDLERsensitivity-field-collision-handlerFieldsCollisionHandlerThe field collision handler for the Sensitivity Cube.
SP_QUALIFIER__SENSITIVITY_SUMMARY_FIELD_COLLISION_HANDLERsensitivity-summary-field-collision-handlerFieldsCollisionHandlerThe field collision handler for the Sensitivity Summary Cube.
SP_QUALIFIER__VAR_FIELD_COLLISION_HANDLERvar-field-collision-handlerFieldsCollisionHandlerThe field collision handler for the VaR-ES Cube.
SP_QUALIFIER__VAR_SUMMARY_FIELD_COLLISION_HANDLERvar-summary-field-collision-handlerFieldsCollisionHandlerThe field collision handler for the VaR-ES Summary Cube.
SP_QUALIFIER__MARKET_DATA_FIELD_COLLISION_HANDLERmarket-data-field-collision-handlerFieldsCollisionHandlerThe field collision handler for the Market Data Cube.
SP_QUALIFIER__PNL_BASE_SELECTIONpnl-base-selectionBaseSelectionCreatorThe base selection for the PLCube.
SP_QUALIFIER__PNL_SUMMARY_BASE_SELECTIONpnl-summary-base-selectionBaseSelectionCreatorThe base selection for the PL Summary Cube.
SP_QUALIFIER__SENSITIVITY_BASE_SELECTIONsensitivity-base-selectionBaseSelectionCreatorThe base selection for the Sensitivity Cube.
SP_QUALIFIER__SENSITIVITY_SUMMARY_BASE_SELECTIONsensitivity-summary-base-selectionBaseSelectionCreatorThe base selection for the Sensitivity Summary Cube.
SP_QUALIFIER__VAR_BASE_SELECTIONvar-base-selectionBaseSelectionCreatorThe base selection for the VaR-ES Cube.
SP_QUALIFIER__VAR_SUMMARY_BASE_SELECTIONvar-summary-base-selectionBaseSelectionCreatorThe base selection for the VaR-ES Summary Cube.
SP_QUALIFIER__MARKET_DATA_BASE_SELECTIONmarket-data-base-selectionBaseSelectionCreatorThe base selection for the Market Data Cube.
SP_QUALIFIER__PNL_EXTRA_SELECTIONpnl-extra-selectionExtraSelectionApplierAny extra selections applied to the PLCube.
SP_QUALIFIER__PNL_SUMMARY_EXTRA_SELECTIONpnl-summary-extra-selectionExtraSelectionApplierAny extra selections applied to the PL Summary Cube.
SP_QUALIFIER__SENSITIVITY_EXTRA_SELECTIONsensitivity-extra-selectionExtraSelectionApplierAny extra selections applied to the Sensitivity Cube.
SP_QUALIFIER__SENSITIVITY_SUMMARY_EXTRA_SELECTIONsensitivity-summary-extra-selectionExtraSelectionApplierAny extra selections applied to the Sensitivity Summary Cube.
SP_QUALIFIER__VAR_EXTRA_SELECTIONvar-extra-selectionExtraSelectionApplierAny extra selections applied to the VaR-ES Cube.
SP_QUALIFIER__VAR_SUMMARY_EXTRA_SELECTIONvar-summary-extra-selectionExtraSelectionApplierAny extra selections applied to the VaR-ES Summary Cube.
SP_QUALIFIER__MARKET_DATA_EXTRA_SELECTIONmarket-data-extra-selectionExtraSelectionApplierAny extra selections applied to the Market Data Cube.
SP_QUALIFIER__PNL_SCHEMA_SELECTIONpnl-schema-selectionSelectionDescriptionCreatorThe complete schema selection for the PLCube.
SP_QUALIFIER__PNL_SUMMARY_SCHEMA_SELECTIONpnl-summary-schema-selectionSelectionDescriptionCreatorThe complete schema selection for the PL Summary Cube.
SP_QUALIFIER__SENSITIVITY_SCHEMA_SELECTIONsensitivity-schema-selectionSelectionDescriptionCreatorThe complete schema selection for the Sensitivity Cube.
SP_QUALIFIER__SENSITIVITY_SUMMARY_SCHEMA_SELECTIONsensitivity-summary-schema-selectionSelectionDescriptionCreatorThe complete schema selection for the Sensitivity Summary Cube.
SP_QUALIFIER__VAR_SCHEMA_SELECTIONvar-schema-selectionSelectionDescriptionCreatorThe complete schema selection for the VaR-ES Cube.
SP_QUALIFIER__VAR_SUMMARY_SCHEMA_SELECTIONvar-summary-schema-selectionSelectionDescriptionCreatorThe complete schema selection for the VaR-ES Summary Cube.
SP_QUALIFIER__MARKET_DATA_SCHEMA_SELECTIONmarket-data-schema-selectionSelectionDescriptionCreatorThe complete schema selection for the Market Data Cube.
For example, to easily add an extra schema selection for the VaR-ES Cube, define a bean as follows: 
   @Qualifier(SP_QUALIFIER__VAR_EXTRA_SELECTION)
   @Bean
   ExtraSelectionApplier<CanUseOtherReference> extraVarSelection() {
       return builder -> builder
           .usingReference(storesToPath(TRADE_BASE_STORE_NAME, "TESTSTORE"))
           .withAllFields()
           .except(AS_OF_DATE, RISK_CLASS);
   }

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