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

Class QueryContext

java.lang.Object

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

public class QueryContext
extends Object

QueryContext.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	QueryContext.Param Enumeration of the available query context keys that can be set.

Field Summary

Fields

Modifier and Type	Field and Description
static Map<QueryContext.Param,Class>	ACCEPTING_FIELDS
Map<QueryContext.Param,Object>	contextMap
protected long	sequenceNumber
protected AtomicLong	totalQueries

Constructor Summary

Constructors

Modifier	Constructor and Description
	QueryContext(Map<QueryContext.Param,Object> contextMap) Constructor.
	QueryContext(Map<QueryContext.Param,Object> contextMap, AtomicLong totalQueries) Constructor.
protected	QueryContext(QueryContext copy, Map<QueryContext.Param,Object> contextMap) Constructor.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
QueryContext	fork() Fork the QueryContext, cloning the values and continuing the number fo queries.
Boolean	getBySegment()
Boolean	getFinalize()
long	getNumberOfQueries()
Boolean	getPopulateCache()
Integer	getPriority()
String	getQueryId()
long	getSequenceNumber()
Integer	getTimeout()
Integer	getUncoveredIntervalsLimit()
Boolean	getUseCache()
int	hashCode()
boolean	isEmpty()
static void	validateField(QueryContext.Param param, Object value) Validate that the given field and value are allowed in the context.
QueryContext	withBySegment(Boolean bySegment)
QueryContext	withFinalize(Boolean finalize)
QueryContext	withPopulateCache(Boolean populateCache)
QueryContext	withPriority(Integer priority)
QueryContext	withQueryId(String queryId)
QueryContext	withTimeout(Integer timeout)
QueryContext	withUncoveredIntervalsLimit(Integer uncoveredIntervalsLimit)
QueryContext	withUseCache(Boolean useCache)
protected QueryContext	withValue(QueryContext.Param param, Object value) Copy-mutate the context on the given field with the given value.

Methods inherited from class java.lang.Object

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

Field Detail

ACCEPTING_FIELDS

public static final Map<QueryContext.Param,Class> ACCEPTING_FIELDS

contextMap

public final Map<QueryContext.Param,Object> contextMap

totalQueries

protected final AtomicLong totalQueries

sequenceNumber

protected final long sequenceNumber

Constructor Detail

QueryContext

public QueryContext(Map<QueryContext.Param,Object> contextMap,
                    AtomicLong totalQueries)

Constructor.

Parameters:

contextMap - Map of context values

totalQueries - Number of queries that this context is attached to

QueryContext

public QueryContext(Map<QueryContext.Param,Object> contextMap)

Constructor.

Parameters:

contextMap - Map of context values

QueryContext

protected QueryContext(QueryContext copy,
                       Map<QueryContext.Param,Object> contextMap)

Constructor.

Parameters:

copy - QueryContext to gather sequence number and total queries from

contextMap - Map of context values to override with

Method Detail

validateField

public static void validateField(QueryContext.Param param,
                                 Object value)

Validate that the given field and value are allowed in the context.

Parameters:

param - Field to evaluate

value - Value to evaluate

isEmpty

public boolean isEmpty()

fork

public QueryContext fork()

Fork the QueryContext, cloning the values and continuing the number fo queries.

Returns:

the forked context

withValue

protected QueryContext withValue(QueryContext.Param param,
                                 Object value)

Copy-mutate the context on the given field with the given value.

Parameters:

param - Field to set in the clone

value - Value to set in the clone

Returns:

a clone of this context with the new value set

withTimeout

public QueryContext withTimeout(Integer timeout)

withPriority

public QueryContext withPriority(Integer priority)

withQueryId

public QueryContext withQueryId(String queryId)

withUseCache

public QueryContext withUseCache(Boolean useCache)

withPopulateCache

public QueryContext withPopulateCache(Boolean populateCache)

withBySegment

public QueryContext withBySegment(Boolean bySegment)

withFinalize

public QueryContext withFinalize(Boolean finalize)

withUncoveredIntervalsLimit

public QueryContext withUncoveredIntervalsLimit(Integer uncoveredIntervalsLimit)

getSequenceNumber

public long getSequenceNumber()

getNumberOfQueries

public long getNumberOfQueries()

getTimeout

public Integer getTimeout()

getPriority

public Integer getPriority()

getQueryId

public String getQueryId()

getUseCache

public Boolean getUseCache()

getPopulateCache

public Boolean getPopulateCache()

getBySegment

public Boolean getBySegment()

getFinalize

public Boolean getFinalize()

getUncoveredIntervalsLimit

public Integer getUncoveredIntervalsLimit()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object