org.epics.pvmanager.extra

Class DynamicGroup

java.lang.Object

org.epics.pvmanager.expression.DesiredRateExpressionListImpl<R>

org.epics.pvmanager.expression.DesiredRateExpressionImpl<List<Object>>

org.epics.pvmanager.extra.DynamicGroup

All Implemented Interfaces:

DesiredRateExpression<List<Object>>, DesiredRateExpressionList<List<Object>>

public class DynamicGroup
extends DesiredRateExpressionImpl<List<Object>>

A expression that returns the result of a dynamically managed group. Once the group is created, any DesiredRateExpression can be added dynamically. The exceptions eventually generated by those expressions can be obtained through lastExceptions().

Author:

carcassi

Constructor Summary

Constructors

Constructor and Description
DynamicGroup() Creates a new group.

Method Summary

Methods

Modifier and Type	Method and Description
DynamicGroup	add(DesiredRateExpression<?> expression) Adds the expression at the end.
DynamicGroup	clear() Removes all the expressions currently in the group.
List<Exception>	lastExceptions() Returns the last exception for each expression in the group (if present).
DynamicGroup	remove(int index) Removes the expression at the given location.
DynamicGroup	set(int index, DesiredRateExpression<?> expression) Changes the expression to the given location.
int	size() Returns the number of expressions in the group.

Methods inherited from class org.epics.pvmanager.expression.DesiredRateExpressionImpl

as, fillReadRecipe, getDesiredRateExpressionImpl, getFunction, getName

Methods inherited from class org.epics.pvmanager.expression.DesiredRateExpressionListImpl

and, getDesiredRateExpressions

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.epics.pvmanager.expression.DesiredRateExpressionList

and, getDesiredRateExpressions

Constructor Detail

DynamicGroup

public DynamicGroup()

Creates a new group.

Method Detail

lastExceptions

public List<Exception> lastExceptions()

Returns the last exception for each expression in the group (if present).

Returns:

a list of exceptions (never null)

clear

public DynamicGroup clear()

Removes all the expressions currently in the group.

Returns:

this

size

public int size()

Returns the number of expressions in the group.

Returns:

number of expressions in the group

add

public DynamicGroup add(DesiredRateExpression<?> expression)

Adds the expression at the end.

Parameters:

expression - the expression to be added

Returns:

this

remove

public DynamicGroup remove(int index)

Removes the expression at the given location.

Parameters:

index - the position to remove

Returns:

this

set

public DynamicGroup set(int index,
               DesiredRateExpression<?> expression)

Changes the expression to the given location.

Parameters:

index - the position to remove

expression - the new expression

Returns:

this