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

Class NestedDataOperatorConversions.JsonValueReturningTypeOperatorConversion

java.lang.Object

org.apache.druid.sql.calcite.expression.builtin.NestedDataOperatorConversions.JsonValueReturningTypeOperatorConversion

All Implemented Interfaces:

SqlOperatorConversion

Direct Known Subclasses:

NestedDataOperatorConversions.JsonValueBigintOperatorConversion, NestedDataOperatorConversions.JsonValueDoubleOperatorConversion, NestedDataOperatorConversions.JsonValueVarcharOperatorConversion

Enclosing class:

NestedDataOperatorConversions

public abstract static class NestedDataOperatorConversions.JsonValueReturningTypeOperatorConversion
extends Object
implements SqlOperatorConversion

Constructor Summary

Constructors

Constructor	Description
JsonValueReturningTypeOperatorConversion(org.apache.calcite.sql.SqlFunction function, ColumnType druidType)

Method Summary

Modifier and Type	Method	Description
org.apache.calcite.sql.SqlOperator	calciteOperator()	Returns the SQL operator corresponding to this function.
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

Constructor Details

JsonValueReturningTypeOperatorConversion

public JsonValueReturningTypeOperatorConversion(org.apache.calcite.sql.SqlFunction function,
 ColumnType druidType)

Method Details

calciteOperator

public org.apache.calcite.sql.SqlOperator 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

@Nullable
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)