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

Class AbstractDruidQuery<Q extends AbstractDruidQuery<? super Q>>

java.lang.Object

com.yahoo.bard.webservice.druid.model.query.AbstractDruidQuery<Q>

Type Parameters:

Q - Type of AbstractDruidQuery this one extends. This allows the queries to nest their own type.

All Implemented Interfaces:

DruidQuery<Q>

Direct Known Subclasses:

AbstractDruidFactQuery, SegmentMetadataQuery, TimeBoundaryQuery

public abstract class AbstractDruidQuery<Q extends AbstractDruidQuery<? super Q>>
extends Object
implements DruidQuery<Q>

Base class for druid queries.

Field Summary

Fields

Modifier and Type	Field and Description
protected QueryContext	context
protected DataSource	dataSource
protected QueryType	queryType

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractDruidQuery(QueryType queryType, DataSource dataSource, QueryContext context, boolean doFork) Constructor.

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.
QueryType	getQueryType() Returns the type of the query.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.yahoo.bard.webservice.druid.model.query.DruidQuery

getInnermostQuery, getInnerQuery, withContext, withDataSource, withInnermostDataSource

Field Detail

queryType

protected final QueryType queryType

dataSource

protected final DataSource dataSource

context

protected final QueryContext context

Constructor Detail

AbstractDruidQuery

protected AbstractDruidQuery(QueryType queryType,
                             DataSource dataSource,
                             QueryContext context,
                             boolean doFork)

Constructor.

Parameters:

queryType - The type of this query

dataSource - The datasource

context - The context

doFork - true to fork a new context and bump up the query id, or false to create an exact copy of the context.

Method Detail

getQueryType

public QueryType getQueryType()

Description copied from interface: DruidQuery

Returns the type of the query.

Specified by:

getQueryType in interface DruidQuery<Q extends AbstractDruidQuery<? super Q>>

Returns:

the query type

getDataSource

public DataSource getDataSource()

Description copied from interface: DruidQuery

Returns the data source of the query.

Specified by:

getDataSource in interface DruidQuery<Q extends AbstractDruidQuery<? super Q>>

Returns:

the data source

getContext

public QueryContext getContext()

Description copied from interface: DruidQuery

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

Specified by:

getContext in interface DruidQuery<Q extends AbstractDruidQuery<? super Q>>

Returns:

the query context