org.rrd4j.core

Class RrdEnum<U extends RrdUpdater<U>,E extends Enum<E>>

java.lang.Object

org.rrd4j.core.RrdPrimitive<U>

org.rrd4j.core.RrdEnum<U,E>

Type Parameters:

U - The type of RrdUpdater this primitive belongs to

E - The enum type being stored

class RrdEnum<U extends RrdUpdater<U>,E extends Enum<E>>
extends RrdPrimitive<U>

RRD primitive type for handling enum values.

This class provides methods to store and retrieve enum values in RRD files. It handles the conversion between enum constants and their string representations, with caching support for performance optimization.

Field Summary

Fields inherited from class org.rrd4j.core.RrdPrimitive

RRD_DOUBLE, RRD_INT, RRD_LONG, RRD_PRIM_SIZES, RRD_STRING, STRING_LENGTH

Constructor Summary

Constructors

Constructor and Description
RrdEnum(RrdUpdater<U> updater, boolean isConstant, Class<E> clazz)
RrdEnum(RrdUpdater<U> updater, Class<E> clazz)

Method Summary

Modifier and Type	Method and Description
(package private) E	get() Gets the enum value.
(package private) String	name() Gets the name of the enum value.
(package private) void	set(E value) Sets the enum value.

Methods inherited from class org.rrd4j.core.RrdPrimitive

isCachingAllowed, readBytes, readDouble, readDouble, readDouble, readEnum, readInt, readLong, readString, writeBytes, writeDouble, writeDouble, writeDouble, writeDouble, writeEnum, writeInt, writeLong, writeString

Methods inherited from class java.lang.Object

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

Constructor Detail

RrdEnum

RrdEnum(RrdUpdater<U> updater,
        boolean isConstant,
        Class<E> clazz)

RrdEnum

RrdEnum(RrdUpdater<U> updater,
        Class<E> clazz)

Method Detail

get

E get()
throws IOException

Gets the enum value.

Returns:

the enum value

Throws:

IOException - if an I/O error occurs

name

String name()
     throws IOException

Gets the name of the enum value.

Returns:

the name of the enum value

Throws:

IOException - if an I/O error occurs

set

void set(E value)
  throws IOException

Sets the enum value.

Parameters:

value - the enum value to set

Throws:

IOException - if an I/O error occurs