Package org.opennms.netmgt.rrd.model

Class AbstractRRA

java.lang.Object

org.opennms.netmgt.rrd.model.AbstractRRA

Direct Known Subclasses:

RRA, RRA

public abstract class AbstractRRA
extends Object

The Abstract RRA (Round Robin Archives).

Author:

Alejandro Galue

Constructor Summary

Constructors

Constructor	Description
AbstractRRA()

Method Summary

Modifier and Type	Method	Description
protected abstract AbstractRRA	createSingleRRA(int dsIndex)	Creates a RRA with a single data source.
boolean	formatEquals(AbstractRRA rra)	Format equals.
abstract boolean	formatMergeable(AbstractRRA sourceRra)	Format mergeable.
Long	getPdpPerRow()	Gets the PDP (Primary Data Points) per row.
List<Row>	getRows()	Gets the rows.
abstract boolean	hasAverageAsCF()	Checks for average as consolidation function.
void	setPdpPerRow(Long pdpPerRow)	Sets the PDP (Primary Data Points) per row.
void	setRows(List<Row> rows)	Sets the rows.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractRRA

public AbstractRRA()

Method Detail

createSingleRRA

protected abstract AbstractRRA createSingleRRA(int dsIndex)
                                        throws IllegalArgumentException

Creates a RRA with a single data source.

Parameters:

dsIndex - the RRA-DS index

Returns:

the abstract RRA

Throws:

IllegalArgumentException - the illegal argument exception

getPdpPerRow

public Long getPdpPerRow()

Gets the PDP (Primary Data Points) per row.

Returns:

the PDP (Primary Data Points) per row

setPdpPerRow

public void setPdpPerRow(Long pdpPerRow)

Sets the PDP (Primary Data Points) per row.

Parameters:

pdpPerRow - the new PDP (Primary Data Points) per row

getRows

public List<Row> getRows()

Gets the rows.

Returns:

the rows

setRows

public void setRows(List<Row> rows)

Sets the rows.

Parameters:

rows - the new rows

formatEquals

public boolean formatEquals(AbstractRRA rra)

Format equals.

Parameters:

rra - the RRA object

Returns:

true, if the format is equal

formatMergeable

public abstract boolean formatMergeable(AbstractRRA sourceRra)

Format mergeable.

Two RRA can be merged if and only if the Consolidation Function and the PDP per row are the same.

The amount of rows is not strict for a merge operation.

• If the sourceRra has more rows than the current RRA, the result will be truncated by the number of rows on the current RRA.
• If the sourceRra has less rows than the current RRA, the result will have a NaN window as big as the different between the number of rows.

Parameters:

sourceRra - the source RRA object

Returns:

true, if the format is mergeable

hasAverageAsCF

public abstract boolean hasAverageAsCF()

Checks for average as consolidation function.

Returns:

true, if the consolidation function is AVERAGE