Setting up context values

This page provides a description of how we set up the default context values.

The techniques employed are generic examples that can be extended, adapted and repeated for any use case that we need. In all cases, we make minimal changes to the Reference Implementation.

For more information about context values please see the Atoti Server documentation: Context Values.

Data Cube Context Values

The context values are defined in the configuration class ContextValueConfig within frtb-starter/src/main/java/com/activeviam/frtb/starter/cfg/impl as separate beans for each cube.

Query Cube Context Values

In a distributed deployment, query cubes use the same context value beans as their corresponding data cubes.

Example

@Bean
public List<IContextValue> contextValuePLCube(@Value("${" + CTX_QUERIES_TIME_LIMIT_DATA + ":300}") int queriesTimeLimit,
    @Value("${" + CTX_QUERIES_RESULT_LIMIT_INTERMEDIATE_SIZE + ":" + DEFAULT_INTERMEDIATE_LIMIT + "}") int queriesResultLimitIntermediateSize,
    @Value("${" + CTX_QUERIES_RESULT_LIMIT_TRANSIENT_SIZE + ":" + DEFAULT_TRANSIENT_LIMIT + "}") long queriesResultLimitTransientSize,
    @Value("${" + CTX_BACK_TESTING_LOOKBACK + ":250}") String backTesting,
    @Value("${" + CTX_PLA_LOOKBACK + ":250}") String plaLookBack
){
	return List.of(
		QueriesTimeLimit.of(queriesTimeLimit,TimeUnit.SECONDS),
		[...]
	);
}