query/me.ahoo.wow.query.dataset/QueryDatasets

QueryDatasets

@ExperimentalWowApi
class QueryDatasets(datasets: Collection<QueryDataset> = emptyList())

The runtime catalog of the datasets this node serves: declared in code, read from files (QueryDatasetFiles) or registered while the node runs, as dataset-registry does. The schema Catalog, the dataset gateways and the storages follow it through listen.

Constructors

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constructor(datasets: Collection<QueryDataset> = emptyList())

Types

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object Companion

Properties

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@InternalWowApi
val schemaSource: QuerySchemaSource

The schema source of the datasets' fields: a dataset's declaration is the base of its model, as the Manifest is for an aggregate's, and other sources (a bean) may enrich it at a higher priority.

Functions

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fun add(dataset: QueryDataset)

Adds dataset; refused when a dataset of that name is already here, or a listener refuses it.

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operator fun get(name: AggregateType): QueryDataset?
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fun listen(listener: QueryDatasetListener)

Follows every later change; the datasets already here are all.

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@InternalWowApi
fun profile(context: QuerySchemaContext): QueryModelProfile?

The profile of context's model: the dataset's own for QueryModel.DATASET, the built-in one otherwise.

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fun put(dataset: QueryDataset)

Adds dataset, or replaces the one of its name.

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fun remove(name: AggregateType): Boolean

Removes the dataset of name; false when there is none.

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fun replace(dataset: QueryDataset)

Replaces the dataset of dataset's name with this declaration; refused when there is none.

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