Package org.apache.druid.sql.calcite.planner.querygen

Class DruidQueryGenerator.DruidNodeStack

java.lang.Object

org.apache.druid.sql.calcite.planner.querygen.DruidQueryGenerator.DruidNodeStack

Enclosing class:

DruidQueryGenerator

public static class DruidQueryGenerator.DruidNodeStack
extends Object

Tracks the upstream nodes during traversal. Its main purpose is to provide access to parent nodes; so that context sensitive logics can be formalized with it.

Constructor Summary

Constructors

Constructor	Description
DruidNodeStack(PlannerContext plannerContext)

Method Summary

Modifier and Type	Method	Description
DruidLogicalNode	getNode()
org.apache.druid.sql.calcite.planner.querygen.DruidQueryGenerator.DruidNodeStack.Entry	getNode(int i)
PlannerContext	getPlannerContext()
DruidLogicalNode	parentNode()
int	peekOperandIndex()
void	pop()
void	push(DruidLogicalNode item)
void	push(DruidLogicalNode item, int operandIndex)
int	size()

Methods inherited from class java.lang.Object

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

Constructor Details

DruidNodeStack

public DruidNodeStack(PlannerContext plannerContext)

Method Details

push

public void push(DruidLogicalNode item)

push

public void push(DruidLogicalNode item,
 int operandIndex)

pop

public void pop()

size

public int size()

getNode

public DruidLogicalNode getNode()

parentNode

public DruidLogicalNode parentNode()

getNode

public org.apache.druid.sql.calcite.planner.querygen.DruidQueryGenerator.DruidNodeStack.Entry getNode(int i)

peekOperandIndex

public int peekOperandIndex()

getPlannerContext

public PlannerContext getPlannerContext()