org.apache.druid.sql.guice

Class SqlBindings

java.lang.Object

org.apache.druid.sql.guice.SqlBindings

public class SqlBindings
extends Object

Utility class that provides bindings to extendable components in the SqlModule

Constructor Summary

Constructors

Constructor and Description
SqlBindings()

Method Summary

Modifier and Type	Method and Description
static void	addAggregator(com.google.inject.Binder binder, Class<? extends SqlAggregator> aggregatorClass)
static void	addApproxCountDistinctChoice(com.google.inject.Binder binder, String name, Class<? extends SqlAggregator> clazz) Add a choice for APPROX_COUNT_DISTINCT implementation.
static void	addOperatorConversion(com.google.inject.Binder binder, Class<? extends SqlOperatorConversion> clazz)
static void	addSchema(com.google.inject.Binder binder, Class<? extends NamedSchema> clazz) Returns a multiBinder that can modules can use to bind NamedSchema to be used by the SqlModule

Methods inherited from class java.lang.Object

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

Constructor Detail

SqlBindings

public SqlBindings()

Method Detail

addAggregator

public static void addAggregator(com.google.inject.Binder binder,
                                 Class<? extends SqlAggregator> aggregatorClass)

addApproxCountDistinctChoice

public static void addApproxCountDistinctChoice(com.google.inject.Binder binder,
                                                String name,
                                                Class<? extends SqlAggregator> clazz)

Add a choice for APPROX_COUNT_DISTINCT implementation. The SqlAggregator's SqlAggregator.calciteFunction() method will be ignored and replaced by the version from ApproxCountDistinctSqlAggregator. For sane results, the provided aggregator class must be compatible with that function signature.

addOperatorConversion

public static void addOperatorConversion(com.google.inject.Binder binder,
                                         Class<? extends SqlOperatorConversion> clazz)

addSchema

public static void addSchema(com.google.inject.Binder binder,
                             Class<? extends NamedSchema> clazz)

Returns a multiBinder that can modules can use to bind NamedSchema to be used by the SqlModule