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As part of the refactoring and integration of the Data Lake REST API into the Data Explorer, the return type of Data Lake queries needs to be harmonized.

Status Quo

org.apache.streampipes.model.datalake | ui/src/app/core-model/datalake

Data Result

The return type for simple queries without grouping or paging is a DataResult object.

Data Result
DataResult {
    measureName: string;
    total: number;
    headers: string[];
    rows: any[];
    labels: string[];
}

Note: "labels" is not used in the entire project and is therefore obsolete.

Grouped Data Result

The return type for queries with grouping is a GroupedDataResult object.

Grouped Data Result
GroupedDataResult {
    total: number;
    dataResults: Map<string, DataResult>;
}

Page Result

The return type for queries with paging is a PageResult object, that inherits from DataResult class.

Grouped Data Result
GroupedDataResult {
    total: number;
    dataResults: Map<string, DataResult>;
}
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