com.yahoo.bard.webservice.util

Class TableUtils

java.lang.Object

com.yahoo.bard.webservice.util.TableUtils

public class TableUtils
extends Object

Methods to support table operations and table resolution.

Constructor Summary

Constructors

Constructor and Description
TableUtils()

Method Summary

Modifier and Type	Method and Description
static Set<String>	getColumnNames(DataApiRequest request, DruidAggregationQuery<?> query) Get the schema column names from the dimensions and metrics.
static Set<String>	getColumnNames(DataApiRequest request, DruidAggregationQuery<?> query, PhysicalTable table) Deprecated. in favor of getColumnNames(DataApiRequest, DruidAggregationQuery) returning dimension api name
static SimplifiedIntervalList	getConstrainedLogicalTableAvailability(LogicalTable logicalTable, QueryPlanningConstraint queryPlanningConstraint) Returns union of constrained availabilities of constrained logical table.
static Stream<Dimension>	getDimensions(DataApiRequest request, DruidAggregationQuery<?> query) Get a stream returning all the fact store dimensions.
static SimplifiedIntervalList	logicalTableAvailability(LogicalTable logicalTable) Returns union of availabilities of the logical table.

Methods inherited from class java.lang.Object

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

Constructor Detail

TableUtils

public TableUtils()

Method Detail

getColumnNames

@Deprecated
public static Set<String> getColumnNames(DataApiRequest request,
                                                     DruidAggregationQuery<?> query,
                                                     PhysicalTable table)

Deprecated. in favor of getColumnNames(DataApiRequest, DruidAggregationQuery) returning dimension api name

Get the fact store column names from the dimensions and metrics.

NOTE: This method exists since TemplateDruidQuery's don't have a valid DataSource from which we can retrieve a valid PhysicalTable. Consequently, at time of resolution, the table should be passed in.

Parameters:

request - A request which supplies grouping dimensions and filtering dimensions

query - A query model which has metric column and possibly dimension column names

table - Physical table used in resolving dimension names

Returns:

a set of strings representing fact store column names

getColumnNames

public static Set<String> getColumnNames(DataApiRequest request,
                                         DruidAggregationQuery<?> query)

Get the schema column names from the dimensions and metrics.

Parameters:

request - A request which supplies grouping dimensions and filtering dimensions

query - A query model which has metric column and possibly dimension column names

Returns:

a set of strings representing schema column names

getDimensions

public static Stream<Dimension> getDimensions(DataApiRequest request,
                                              DruidAggregationQuery<?> query)

Get a stream returning all the fact store dimensions.

Parameters:

request - A request which supplies grouping dimensions and filtering dimensions

query - A query model which may have dimension column names

Returns:

a set of strings representing fact store column names

getConstrainedLogicalTableAvailability

public static SimplifiedIntervalList getConstrainedLogicalTableAvailability(LogicalTable logicalTable,
                                                                            QueryPlanningConstraint queryPlanningConstraint)

Returns union of constrained availabilities of constrained logical table.

Parameters:

logicalTable - The constrained logical table

queryPlanningConstraint - The constraint

Returns:

the union of constrained availabilities of constrained logical table

logicalTableAvailability

public static SimplifiedIntervalList logicalTableAvailability(LogicalTable logicalTable)

Returns union of availabilities of the logical table.

Parameters:

logicalTable - The logical table

Returns:

the union of availabilities of the logical table