Uses of Interface
org.apache.lens.server.api.driver.LensDriver

Packages that use LensDriver

Package	Description
org.apache.lens.cube.query.cost
org.apache.lens.driver.es
org.apache.lens.driver.hive
org.apache.lens.driver.jdbc
org.apache.lens.server.api.driver
org.apache.lens.server.api.query
org.apache.lens.server.api.query.collect
org.apache.lens.server.api.query.cost
org.apache.lens.server.query
org.apache.lens.server.query.collect
org.apache.lens.server.rewrite

Uses of LensDriver in org.apache.lens.cube.query.cost

Methods in org.apache.lens.cube.query.cost with parameters of type LensDriver

Modifier and Type	Method and Description
QueryCost	FactPartitionBasedQueryCostCalculator.calculateCost(AbstractQueryContext queryContext, LensDriver driver)
Map<String,Set<?>>	FactPartitionBasedQueryCostCalculator.getAllPartitions(AbstractQueryContext queryContext, LensDriver driver)

Uses of LensDriver in org.apache.lens.driver.es

Classes in org.apache.lens.driver.es that implement LensDriver

Modifier and Type	Class and Description
class	ESDriver Driver for elastic search

Uses of LensDriver in org.apache.lens.driver.hive

Classes in org.apache.lens.driver.hive that implement LensDriver

Modifier and Type	Class and Description
class	HiveDriver The Class HiveDriver.

Uses of LensDriver in org.apache.lens.driver.jdbc

Classes in org.apache.lens.driver.jdbc that implement LensDriver

Modifier and Type	Class and Description
class	JDBCDriver This driver is responsible for running queries against databases which can be queried using the JDBC API.

Uses of LensDriver in org.apache.lens.server.api.driver

Classes in org.apache.lens.server.api.driver that implement LensDriver

Modifier and Type	Class and Description
class	AbstractLensDriver Abstract class for Lens Driver Implementations.

Methods in org.apache.lens.server.api.driver that return LensDriver

Modifier and Type	Method and Description
LensDriver	DriverEvent.getDriver()
LensDriver	WeightedQueryCostDriverSelector.select(AbstractQueryContext ctx, org.apache.hadoop.conf.Configuration conf) Returns the driver that has the minimum query cost according to predefined driver allocation ratios.
LensDriver	MinQueryCostSelector.select(AbstractQueryContext ctx, org.apache.hadoop.conf.Configuration conf) Returns the driver that has the minimum query cost.
LensDriver	DriverSelector.select(AbstractQueryContext ctx, org.apache.hadoop.conf.Configuration conf) Select.

Constructors in org.apache.lens.server.api.driver with parameters of type LensDriver

Constructor and Description
DriverEvent(long eventTime, LensDriver driver) Instantiates a new driver event.
DriverSessionStarted(long eventTime, LensDriver driver, String lensSessionID, String driverSessionID) Instantiates a new driver session started.

Uses of LensDriver in org.apache.lens.server.api.query

Methods in org.apache.lens.server.api.query that return LensDriver

Modifier and Type	Method and Description
LensDriver	DriverSelectorQueryContext.DriverQueryContext.getDriver()
LensDriver	FinishedLensQuery.getSelectedDriver()
LensDriver	DriverSelectorQueryContext.getSelectedDriver() The selected driver.
LensDriver	AbstractQueryContext.getSelectedDriver() Wrapper method for convenience on driver context

Methods in org.apache.lens.server.api.query that return types with arguments of type LensDriver

Modifier and Type	Method and Description
Map<LensDriver,AbstractQueryContext.DriverEstimateRunnable>	AbstractQueryContext.getDriverEstimateRunnables() Get runnables wrapping estimate computation, which could be processed offline
Map<LensDriver,DriverSelectorQueryContext.DriverQueryContext>	DriverSelectorQueryContext.getDriverQueryContextMap() Map of driver to driver specific query context
Collection<LensDriver>	DriverSelectorQueryContext.getDrivers()
Collection<LensDriver>	DriverSelectorQueryContext.getDriversWithValidQueryCost()

Methods in org.apache.lens.server.api.query with parameters of type LensDriver

Modifier and Type	Method and Description
static QueryContext	QueryContext.createContextWithSingleDriver(String query, String user, LensConf qconf, org.apache.hadoop.conf.Configuration conf, LensDriver driver, String lensSessionPublicId, boolean mergeDriverConf) Utility create method to create context with single driver.
org.apache.hadoop.conf.Configuration	DriverSelectorQueryContext.getDriverConf(LensDriver driver)
org.apache.hadoop.conf.Configuration	AbstractQueryContext.getDriverConf(LensDriver driver) Get driver conf
String	DriverSelectorQueryContext.getDriverQuery(LensDriver driver)
String	AbstractQueryContext.getDriverQuery(LensDriver driver) Get driver query
QueryCost	DriverSelectorQueryContext.getDriverQueryCost(LensDriver driver)
QueryCost	AbstractQueryContext.getDriverQueryCost(LensDriver driver) Get query cost for the driver
DriverQueryPlan	DriverSelectorQueryContext.getDriverQueryPlan(LensDriver driver)
Exception	AbstractQueryContext.getDriverRewriteError(LensDriver driver) Get exception during rewrite.
DriverQueryPlan	DriverSelectorQueryContext.getDriverRewriterPlan(LensDriver driver)
DriverQueryPlan	AbstractQueryContext.getDriverRewriterPlan(LensDriver driver)
String	DriverSelectorQueryContext.getFinalDriverQuery(LensDriver driver)
String	AbstractQueryContext.getFinalDriverQuery(LensDriver driver)
Map<String,Double>	AbstractQueryContext.getTableWeights(LensDriver driver)
void	DriverSelectorQueryContext.setDriverConf(LensDriver driver, org.apache.hadoop.conf.Configuration conf)
void	DriverSelectorQueryContext.setDriverCost(LensDriver driver, QueryCost cost)
void	AbstractQueryContext.setDriverCost(LensDriver driver, QueryCost cost)
void	DriverSelectorQueryContext.setDriverQuery(LensDriver driver, String driverQuery)
void	AbstractQueryContext.setDriverQuery(LensDriver driver, String query) Set query for a given driver
void	DriverSelectorQueryContext.setDriverQueryPlan(LensDriver driver, DriverQueryPlan qp)
void	AbstractQueryContext.setDriverRewriteError(LensDriver driver, Exception exp) Set exception during rewrite.
void	DriverSelectorQueryContext.setDriverRewriterPlan(LensDriver driver, DriverQueryPlan rewriterPlan)
void	AbstractQueryContext.setFinalDriverQuery(LensDriver driver, String rewrittenQuery) Set final driver rewritten query for the driver.
void	DriverSelectorQueryContext.setSelectedDriver(LensDriver selectedDriver) The selected driver.
void	AbstractQueryContext.setSelectedDriver(LensDriver driver) Wrapper method for convenience on driver context

Method parameters in org.apache.lens.server.api.query with type arguments of type LensDriver

Modifier and Type	Method and Description
void	AbstractQueryContext.setDriverQueries(Map<LensDriver,String> driverQueries) Set driver queries
void	DriverSelectorQueryContext.setDriverQueryContextMap(Map<LensDriver,DriverSelectorQueryContext.DriverQueryContext> driverQueryContextMap) Map of driver to driver specific query context
void	DriverSelectorQueryContext.setDriverQueryPlans(Map<LensDriver,String> driverQueries, AbstractQueryContext qctx) Sets driver queries, generates plans for each driver by calling explain with respective queries, Sets driverQueryPlans
QueryContext	FinishedLensQuery.toQueryContext(org.apache.hadoop.conf.Configuration conf, Collection<LensDriver> drivers)

Constructors in org.apache.lens.server.api.query with parameters of type LensDriver

Constructor and Description
AbstractQueryContext.DriverEstimateRunnable(AbstractQueryContext queryContext, LensDriver driver)

Constructor parameters in org.apache.lens.server.api.query with type arguments of type LensDriver

Constructor and Description
DriverSelectorQueryContext(String userQuery, org.apache.hadoop.conf.Configuration queryConf, Collection<LensDriver> drivers)
DriverSelectorQueryContext(String userQuery, org.apache.hadoop.conf.Configuration queryConf, Collection<LensDriver> drivers, boolean mergeConf)
ExplainQueryContext(String requestId, String query, String user, LensConf conf, org.apache.hadoop.conf.Configuration qconf, Collection<LensDriver> drivers) Constructor.
PreparedQueryContext(String query, String user, org.apache.hadoop.conf.Configuration conf, Collection<LensDriver> drivers) Instantiates a new prepared query context.
PreparedQueryContext(String query, String user, org.apache.hadoop.conf.Configuration conf, LensConf qconf, Collection<LensDriver> drivers) Instantiates a new prepared query context.
QueryContext(String query, String user, LensConf qconf, org.apache.hadoop.conf.Configuration conf, Collection<LensDriver> drivers) Creates context from query

Uses of LensDriver in org.apache.lens.server.api.query.collect

Methods in org.apache.lens.server.api.query.collect with parameters of type LensDriver

Modifier and Type	Method and Description
Set<QueryContext>	EstimatedImmutableQueryCollection.getQueries(LensDriver driver)
int	EstimatedImmutableQueryCollection.getQueriesCount(LensDriver driver)

Uses of LensDriver in org.apache.lens.server.api.query.cost

Methods in org.apache.lens.server.api.query.cost with parameters of type LensDriver

Modifier and Type	Method and Description
QueryCost	QueryCostCalculator.calculateCost(AbstractQueryContext queryContext, LensDriver driver)

Uses of LensDriver in org.apache.lens.server.query

Methods in org.apache.lens.server.query that return LensDriver

Modifier and Type	Method and Description
LensDriver	QueryExecutionServiceImpl.RewriteEstimateRunnable.getDriver()

Constructors in org.apache.lens.server.query with parameters of type LensDriver

Constructor and Description
QueryExecutionServiceImpl.RewriteEstimateRunnable(LensDriver driver, RewriteUtil.DriverRewriterRunnable rewriterRunnable, AbstractQueryContext.DriverEstimateRunnable estimateRunnable, AbstractQueryContext ctx, CountDownLatch estimateCompletionLatch)

Uses of LensDriver in org.apache.lens.server.query.collect

Methods in org.apache.lens.server.query.collect with parameters of type LensDriver

Modifier and Type	Method and Description
Set<QueryContext>	ThreadSafeEstimatedQueryCollection.getQueries(LensDriver driver)
Set<QueryContext>	DefaultEstimatedQueryCollection.getQueries(LensDriver driver)
int	ThreadSafeEstimatedQueryCollection.getQueriesCount(LensDriver driver)
int	DefaultEstimatedQueryCollection.getQueriesCount(LensDriver driver)

Uses of LensDriver in org.apache.lens.server.rewrite

Methods in org.apache.lens.server.rewrite that return LensDriver

Modifier and Type	Method and Description
LensDriver	RewriteUtil.DriverRewriterRunnable.getDriver()

Methods in org.apache.lens.server.rewrite that return types with arguments of type LensDriver

Modifier and Type	Method and Description
static Map<LensDriver,RewriteUtil.DriverRewriterRunnable>	RewriteUtil.rewriteQuery(AbstractQueryContext ctx) Rewrite query.

Constructors in org.apache.lens.server.rewrite with parameters of type LensDriver

Constructor and Description
RewriteUtil.DriverRewriterRunnable(LensDriver driver, AbstractQueryContext ctx, List<org.apache.lens.server.rewrite.RewriteUtil.CubeQueryInfo> cubeQueries, String replacedQuery)