Package org.apache.druid.sql.calcite.expression.builtin

Class QueryLookupOperatorConversion

java.lang.Object

org.apache.druid.sql.calcite.expression.builtin.QueryLookupOperatorConversion

All Implemented Interfaces:

SqlOperatorConversion

public class QueryLookupOperatorConversion
extends Object
implements SqlOperatorConversion

Field Summary

Fields

Modifier and Type	Field	Description
static final org.apache.calcite.sql.SqlFunction	SQL_FUNCTION

Constructor Summary

Constructors

Constructor	Description
QueryLookupOperatorConversion(LookupExtractorFactoryContainerProvider lookupExtractorFactoryContainerProvider)

Method Summary

Modifier and Type	Method	Description
org.apache.calcite.sql.SqlFunction	calciteOperator()	Returns the SQL operator corresponding to this function.
LookupExtractorFactoryContainerProvider	getLookupExtractorFactoryContainerProvider()	For DruidRules to be able to instantiate ReverseLookupRule.
DruidExpression	toDruidExpression(PlannerContext plannerContext, RowSignature rowSignature, org.apache.calcite.rex.RexNode rexNode)	Translate a Calcite RexNode to a Druid expression.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.druid.sql.calcite.expression.SqlOperatorConversion

toDruidExpressionWithPostAggOperands, toDruidFilter, toPostAggregator

Field Details

SQL_FUNCTION

public static final org.apache.calcite.sql.SqlFunction SQL_FUNCTION

Constructor Details

QueryLookupOperatorConversion

@Inject
public QueryLookupOperatorConversion(LookupExtractorFactoryContainerProvider lookupExtractorFactoryContainerProvider)

Method Details

calciteOperator

public org.apache.calcite.sql.SqlFunction calciteOperator()

Description copied from interface: SqlOperatorConversion

Returns the SQL operator corresponding to this function. Should be a singleton.

Specified by:

calciteOperator in interface SqlOperatorConversion

Returns:

operator

toDruidExpression

public DruidExpression toDruidExpression(PlannerContext plannerContext,
 RowSignature rowSignature,
 org.apache.calcite.rex.RexNode rexNode)

Description copied from interface: SqlOperatorConversion

Translate a Calcite RexNode to a Druid expression.

Specified by:

toDruidExpression in interface SqlOperatorConversion

Parameters:

plannerContext - SQL planner context

rowSignature - signature of the rows to be extracted from

rexNode - expression meant to be applied on top of the rows

Returns:

Druid expression, or null if translation is not possible

See Also:

• Expressions.toDruidExpression(PlannerContext, RowSignature, RexNode)

getLookupExtractorFactoryContainerProvider

public LookupExtractorFactoryContainerProvider getLookupExtractorFactoryContainerProvider()

For DruidRules to be able to instantiate ReverseLookupRule.