org.apache.drill.exec.planner.logical

Class DrillOptiq

java.lang.Object

org.apache.drill.exec.planner.logical.DrillOptiq

public class DrillOptiq
extends Object

Utilities for Drill's planner.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DrillOptiq.RexToDrill

Field Summary

Fields

Modifier and Type	Field and Description
static String	UNSUPPORTED_REX_NODE_ERROR

Constructor Summary

Constructors

Constructor and Description
DrillOptiq()

Method Summary

Modifier and Type	Method and Description
static boolean	isLiteralNull(org.apache.calcite.rex.RexLiteral literal)
static LogicalExpression	toDrill(DrillParseContext context, List<org.apache.calcite.rel.RelNode> inputs, org.apache.calcite.rex.RexNode expr) Converts a tree of RexNode operators into a scalar expression in Drill syntax using multiple inputs.
static LogicalExpression	toDrill(DrillParseContext context, org.apache.calcite.rel.type.RelDataType type, org.apache.calcite.rex.RexBuilder builder, org.apache.calcite.rex.RexNode expr)
static LogicalExpression	toDrill(DrillParseContext context, org.apache.calcite.rel.RelNode input, org.apache.calcite.rex.RexNode expr) Converts a tree of RexNode operators into a scalar expression in Drill syntax using one input.

Methods inherited from class java.lang.Object

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

Field Detail

UNSUPPORTED_REX_NODE_ERROR

public static final String UNSUPPORTED_REX_NODE_ERROR

See Also:

Constant Field Values

Constructor Detail

DrillOptiq

public DrillOptiq()

Method Detail

toDrill

public static LogicalExpression toDrill(DrillParseContext context,
                                        org.apache.calcite.rel.RelNode input,
                                        org.apache.calcite.rex.RexNode expr)

Converts a tree of RexNode operators into a scalar expression in Drill syntax using one input.

Parameters:

context - parse context which contains planner settings

input - data input

expr - expression to be converted

Returns:

converted expression

toDrill

public static LogicalExpression toDrill(DrillParseContext context,
                                        List<org.apache.calcite.rel.RelNode> inputs,
                                        org.apache.calcite.rex.RexNode expr)

Converts a tree of RexNode operators into a scalar expression in Drill syntax using multiple inputs.

Parameters:

context - parse context which contains planner settings

inputs - multiple data inputs

expr - expression to be converted

Returns:

converted expression

toDrill

public static LogicalExpression toDrill(DrillParseContext context,
                                        org.apache.calcite.rel.type.RelDataType type,
                                        org.apache.calcite.rex.RexBuilder builder,
                                        org.apache.calcite.rex.RexNode expr)

isLiteralNull

public static boolean isLiteralNull(org.apache.calcite.rex.RexLiteral literal)