org.apache.lens.server.api.query
Class DriverSelectorQueryContext

java.lang.Object
  org.apache.lens.server.api.query.DriverSelectorQueryContext

public class DriverSelectorQueryContext
extends Object

Nested Class Summary

static class

DriverSelectorQueryContext.DriverQueryContext

Field Summary

protected Map<LensDriver,DriverSelectorQueryContext.DriverQueryContext>	driverQueryContextMap Map of driver to driver specific query context
static org.apache.commons.logging.Log	LOG The constant LOG
protected LensDriver	selectedDriver The selected driver.

Constructor Summary

DriverSelectorQueryContext(String userQuery, org.apache.hadoop.conf.Configuration queryConf, Collection<LensDriver> drivers)

Method Summary

org.apache.hadoop.conf.Configuration	getDriverConf(LensDriver driver)
Collection<String>	getDriverQueries()
String	getDriverQuery(LensDriver driver)
DriverQueryPlan	getDriverQueryPlan(LensDriver driver)
Collection<LensDriver>	getDrivers()
org.apache.hadoop.conf.Configuration	getSelectedDriverConf()
String	getSelectedDriverQuery()
DriverQueryPlan	getSelectedDriverQueryPlan() Return selected driver's query plan, but check for null conditions first.
void	setDriverConf(LensDriver driver, org.apache.hadoop.conf.Configuration conf)
void	setSelectedDriverQuery(String driverQuery)

Methods inherited from class java.lang.Object

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

Field Detail

LOG

public static final org.apache.commons.logging.Log LOG

The constant LOG

selectedDriver

protected LensDriver selectedDriver

The selected driver.

driverQueryContextMap

protected Map<LensDriver,DriverSelectorQueryContext.DriverQueryContext> driverQueryContextMap

Map of driver to driver specific query context

Constructor Detail

DriverSelectorQueryContext

public DriverSelectorQueryContext(String userQuery,
                                  org.apache.hadoop.conf.Configuration queryConf,
                                  Collection<LensDriver> drivers)

Method Detail

getSelectedDriverQueryPlan

public DriverQueryPlan getSelectedDriverQueryPlan()
                                           throws LensException

Return selected driver's query plan, but check for null conditions first.

Returns:

DriverQueryPlan of Selected Driver

Throws:

LensException

getSelectedDriverConf

public org.apache.hadoop.conf.Configuration getSelectedDriverConf()

getSelectedDriverQuery

public String getSelectedDriverQuery()

setDriverConf

public void setDriverConf(LensDriver driver,
                          org.apache.hadoop.conf.Configuration conf)

setSelectedDriverQuery

public void setSelectedDriverQuery(String driverQuery)

getDrivers

public Collection<LensDriver> getDrivers()

getDriverQueries

public Collection<String> getDriverQueries()

getDriverQueryPlan

public DriverQueryPlan getDriverQueryPlan(LensDriver driver)

getDriverConf

public org.apache.hadoop.conf.Configuration getDriverConf(LensDriver driver)

getDriverQuery

public String getDriverQuery(LensDriver driver)