org.apache.drill.exec.physical.resultSet.project

Class Qualifier

java.lang.Object

org.apache.drill.exec.physical.resultSet.project.Qualifier

All Implemented Interfaces:

QualifierContainer

public class Qualifier
extends Object
implements QualifierContainer

Represents one level of qualifier for a column. Analogous to a SchemaPath, but represents the result of coalescing multiple occurrences of the same column.

Constructor Summary

Constructors

Constructor and Description
Qualifier()

Method Summary

Modifier and Type	Method and Description
protected void	addIndex(int index)
int	arrayDims()
RequestedTupleImpl	explicitMembers()
boolean	hasIndex(int index)
boolean	hasIndexes()
boolean[]	indexArray()
boolean	isArray()
boolean	isTuple()
int	maxIndex()
protected void	projectAllElements()
void	projectAllMembers()
Qualifier	qualifier()
Qualifier	requireQualifier()
String	toString()
RequestedTuple	tuple()

Methods inherited from class java.lang.Object

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

Constructor Detail

Qualifier

public Qualifier()

Method Detail

qualifier

public Qualifier qualifier()

Specified by:

qualifier in interface QualifierContainer

requireQualifier

public Qualifier requireQualifier()

Specified by:

requireQualifier in interface QualifierContainer

isArray

public boolean isArray()

hasIndexes

public boolean hasIndexes()

hasIndex

public boolean hasIndex(int index)

maxIndex

public int maxIndex()

indexArray

public boolean[] indexArray()

isTuple

public boolean isTuple()

tuple

public RequestedTuple tuple()

addIndex

protected void addIndex(int index)

projectAllElements

protected void projectAllElements()

arrayDims

public int arrayDims()

projectAllMembers

public void projectAllMembers()

explicitMembers

public RequestedTupleImpl explicitMembers()

toString

public String toString()

Overrides:

toString in class Object