org.epics.vtype

Interface VTable

All Superinterfaces:

VType

All Known Implementing Classes:

PVFieldNTNameValueToVTable, PVFieldToVTable

public interface VTable
extends VType

A table. Tables are collections of columns, each of which is composed of a String representing the name of the column and a list of a particular type (all elements of the same column must be of the same type).

Author:

carcassi

Method Summary

Methods

Modifier and Type	Method and Description
int	getColumnCount() The number of columns in the table.
Object	getColumnData(int column) The data for the given column.
String	getColumnName(int column) The name of the given column.
Class<?>	getColumnType(int column) The type of the elements in the column.
int	getRowCount() The number of rows in the table.

Method Detail

getColumnCount

int getColumnCount()

The number of columns in the table.

Returns:

the number of columns

getRowCount

int getRowCount()

The number of rows in the table.

Currently, it is not clear whether all columns actually have the same number of rows, that is if all arrays have the same length. In the case of variable row, this will return the maximum row count, that is the length of the longest array/column.

Returns:

the number of rows

getColumnType

Class<?> getColumnType(int column)

The type of the elements in the column. The column array will be an array of the given type. For primitive types, this function will return the TYPE class (such as Double.TYPE, while getColumnData(int) will return a ListNumber.

Parameters:

column - the column index

Returns:

the type of this column

getColumnName

String getColumnName(int column)

The name of the given column.

Parameters:

column - the column index

Returns:

the name of the column

getColumnData

Object getColumnData(int column)

The data for the given column.

The data is going to be a List in case of objects or a ListNumber in case of a numeric primitive.

Parameters:

column - the column index

Returns:

the data of the column