com.yahoo.bard.webservice.druid.model.query

Interface DruidQuery<Q extends DruidQuery<? super Q>>

Type Parameters:

Q - class that extends DruidQuery

All Known Subinterfaces:

DruidAggregationQuery<Q>, DruidFactQuery<Q>, DruidMetadataQuery<Q>

All Known Implementing Classes:

AbstractDruidAggregationQuery, AbstractDruidFactQuery, AbstractDruidQuery, DruidSearchQuery, GroupByQuery, LookbackQuery, SegmentMetadataQuery, SqlAggregationQuery, TemplateDruidQuery, TimeBoundaryQuery, TimeSeriesQuery, TopNQuery, WeightEvaluationQuery

public interface DruidQuery<Q extends DruidQuery<? super Q>>

Common interface for Druid Query classes.

Method Summary

Modifier and Type	Method and Description
QueryContext	getContext() Returns the context of the query.
DataSource	getDataSource() Returns the data source of the query.
default DruidQuery<?>	getInnermostQuery() If this structure is part of a query stack, return the lowest element.
default Optional<? extends DruidQuery>	getInnerQuery() If this query is nestable, and has a nested query return it.
QueryType	getQueryType() Returns the type of the query.
Q	withContext(QueryContext context) Returns a copy of this query with the specified context.
Q	withDataSource(DataSource dataSource) Returns a copy of this query with the specified data source.
Q	withInnermostDataSource(DataSource dataSource) Returns a copy of this query with the specified data source on the innermost query.

Method Detail

getQueryType

QueryType getQueryType()

Returns the type of the query.

Returns:

the query type

getDataSource

DataSource getDataSource()

Returns the data source of the query.

Returns:

the data source

withInnermostDataSource

Q withInnermostDataSource(DataSource dataSource)

Returns a copy of this query with the specified data source on the innermost query.

Parameters:

dataSource - the new data source

Returns:

the query copy

getContext

QueryContext getContext()

Returns the context of the query. If the context is uninitialized it returns an initialized empty context

Returns:

the query context

getInnerQuery

default Optional<? extends DruidQuery> getInnerQuery()

If this query is nestable, and has a nested query return it.

Returns:

the nested query or empty if there is no nested query

getInnermostQuery

default DruidQuery<?> getInnermostQuery()

If this structure is part of a query stack, return the lowest element.

Returns:

Return the most nested inner query OR the object itself if it has no children

withDataSource

Q withDataSource(DataSource dataSource)

Returns a copy of this query with the specified data source.

Parameters:

dataSource - the new data source

Returns:

the query copy

withContext

Q withContext(QueryContext context)

Returns a copy of this query with the specified context.

Parameters:

context - the new context

Returns:

the query copy