uk.ac.starlink.ecsv

Class EcsvStarTable

java.lang.Object

uk.ac.starlink.table.AbstractStarTable

uk.ac.starlink.ecsv.EcsvStarTable

All Implemented Interfaces:

Closeable, AutoCloseable, StarTable

public abstract class EcsvStarTable
extends AbstractStarTable

Partial StarTable implementation for ECSV tables. This abstract class provides table and column metadata; concrete subclasses have to implment the data access methods.

Since:

29 Apr 2020

Author:

Mark Taylor

Field Summary

Fields

Modifier and Type	Field and Description
static ValueInfo	CFORMAT_INFO Metadata for ECSV format item.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	EcsvStarTable(EcsvMeta meta) Constructor.

Method Summary

Modifier and Type	Method and Description
int	getColumnCount() Returns the number of columns in this table.
ColumnInfo	getColumnInfo(int icol) Returns the object describing the data in a given column.
long	getRowCount() Returns the number of rows in this table, if known.

Methods inherited from class uk.ac.starlink.table.AbstractStarTable

checkedLongToInt, close, getCell, getColumnAuxDataInfos, getName, getParameters, getRow, getRowAccess, getRowSequence, getRowSplittable, getURL, isRandom, setName, setParameters, setURL

Methods inherited from class java.lang.Object

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

Methods inherited from interface uk.ac.starlink.table.StarTable

getParameterByName, setParameter

Field Detail

CFORMAT_INFO

public static final ValueInfo CFORMAT_INFO

Metadata for ECSV format item.

Constructor Detail

EcsvStarTable

protected EcsvStarTable(EcsvMeta meta)

Constructor.

Parameters:

meta - ECSV metadata object

Method Detail

getColumnCount

public int getColumnCount()

Description copied from interface: StarTable

Returns the number of columns in this table.

Specified by:

getColumnCount in interface StarTable

Specified by:

getColumnCount in class AbstractStarTable

Returns:

the number of columns

getColumnInfo

public ColumnInfo getColumnInfo(int icol)

Description copied from interface: StarTable

Returns the object describing the data in a given column.

Specified by:

getColumnInfo in interface StarTable

Specified by:

getColumnInfo in class AbstractStarTable

Parameters:

icol - the column for which header information is required

Returns:

a ValueInfo object for column icol

getRowCount

public long getRowCount()

Description copied from interface: StarTable

Returns the number of rows in this table, if known. If the number of rows cannot be (easily) determined, a value of -1 will be returned.

Specified by:

getRowCount in interface StarTable

Specified by:

getRowCount in class AbstractStarTable

Returns:

the number of rows, or -1