Package org.apache.drill.exec.store.googlesheets

Class GoogleSheetsColumn

java.lang.Object

org.apache.drill.exec.store.googlesheets.GoogleSheetsColumn

public class GoogleSheetsColumn
extends Object

This class is the representation of a GoogleSheets column. Since column metadata appears to be unavailable at either by accessing the master document or the sheet itself, this class gathers it and represents that as a Java object. Additionally, GoogleSheets does not allow you to name columns or access them by position, instead using A1 notation (or other equally useless forms of accessing columns). In order to facilitate the projection pushdown we have to track the column's: name, data type and also be able to translate that position into a letter. Note that Google sheets has a limit of approx 18k columns.

Constructor Summary

Constructors

Constructor	Description
GoogleSheetsColumn(String columnName, GoogleSheetsUtils.DATA_TYPES dataType, int drillColumnIndex, boolean isMetadata)
GoogleSheetsColumn(String columnName, GoogleSheetsUtils.DATA_TYPES dataType, int googleColumnIndex, int drillColumnIndex)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object that)
int	getColumnIndex()
String	getColumnLetter()
String	getColumnName()
int	getDrillColumnIndex()
TypeProtos.MinorType	getDrillDataType()
int	hashCode()
boolean	isMetadata()
void	load(Object value)
void	setWriter(GoogleSheetsColumnWriter writer)
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

GoogleSheetsColumn

public GoogleSheetsColumn(String columnName,
 GoogleSheetsUtils.DATA_TYPES dataType,
 int googleColumnIndex,
 int drillColumnIndex)

GoogleSheetsColumn

public GoogleSheetsColumn(String columnName,
 GoogleSheetsUtils.DATA_TYPES dataType,
 int drillColumnIndex,
 boolean isMetadata)

Method Details

setWriter

public void setWriter(GoogleSheetsColumnWriter writer)

getDrillDataType

public TypeProtos.MinorType getDrillDataType()

getColumnIndex

public int getColumnIndex()

getDrillColumnIndex

public int getDrillColumnIndex()

getColumnLetter

public String getColumnLetter()

isMetadata

public boolean isMetadata()

getColumnName

public String getColumnName()

load

public void load(Object value)

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object that)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object