Top Description Fields Constructors Methods
org.osgi.service.resourcemonitoring

public Class ResourceEvent<T>

extends Object
Class Inheritance
Type Parameters
<T>
The type for the Resource.

An event is sent to a ResourceListener when resource usage violates one of their thresholds.

ResourceEvent objects are delivered synchronously to all matching ResourceListener services. A typed code is used to identify the event.

Author
$Id: 2c1fe38b57105cc9d5c5f90eb7a7947736a97539 $
Version
1.0
See Also
ResourceListener

Field Summary

Modifier and TypeField and Description
public static final int
ERROR

Type of ResourceEvent indicating a threshold goes to the ERROR state.

private final boolean
public static final int
NORMAL

Type of ResourceEvent indicating a threshold goes to the NORMAL state.

private final ResourceContext
private final int
private final Comparable<T>
public static final int
WARNING

Type of ResourceEvent indicating a threshold goes to the WARNING state.

Constructor Summary

AccessConstructor and Description
public
ResourceEvent(final int
the event type
pType
,
final ResourceContext
the resource context
pContext
,
final boolean
whether it is an upper threshold
pIsUpperThreshold
,
final Comparable<T>
the value
pValue
)

Creates a new ResourceEvent.

Method Summary

Modifier and TypeMethod and Description
public boolean
equals(Object
the reference object with which to compare.
var0
)

Overrides java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

public ResourceContext

Returns:

The resource context that caused the event.
getContext
()

Returns the resource context that caused the event.

public int

Returns:

The event type
getType
()

Returns the event type.

public Comparable<T>

Returns:

the resource consumption value, or null if a resource monitor is not relevant.
getValue
()

Returns the resource consumption value.

public int
hashCode()

Overrides java.lang.Object.hashCode.

Returns a hash code value for this object.

public boolean

Returns:

true if it is an upper threshold.
isUpperThreshold
()

Returns true if the threshold triggering this event is an upper threshold.

public String
toString()

Overrides java.lang.Object.toString.

Returns a string representation of the object.

Inherited from java.lang.Object:
clonefinalizegetClassnotifynotifyAllwaitwaitwait

Field Detail

ERRORback to summary
public static final int ERROR

Type of ResourceEvent indicating a threshold goes to the ERROR state.

isUpperThresholdback to summary
private final boolean isUpperThreshold
NORMALback to summary
public static final int NORMAL

Type of ResourceEvent indicating a threshold goes to the NORMAL state.

resourceContextback to summary
private final ResourceContext resourceContext
typeback to summary
private final int type
valueback to summary
private final Comparable<T> value
WARNINGback to summary
public static final int WARNING

Type of ResourceEvent indicating a threshold goes to the WARNING state.

Constructor Detail

ResourceEventback to summary
public ResourceEvent(final int pType, final ResourceContext pContext, final boolean pIsUpperThreshold, final Comparable<T> pValue)

Creates a new ResourceEvent.

Parameters
pType:int

the event type

pContext:ResourceContext

the resource context

pIsUpperThreshold:boolean

whether it is an upper threshold

pValue:Comparable<T>

the value

Method Detail

equalsback to summary
public boolean equals(Object var0)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters
var0:Object

the reference object with which to compare.

Returns:boolean

true if this object is the same as the obj argument; false otherwise.

Annotations
@Override
getContextback to summary
public ResourceContext getContext()

Returns the resource context that caused the event.

Returns:ResourceContext

The resource context that caused the event.

getTypeback to summary
public int getType()

Returns the event type. The type values are:

Returns:int

The event type

getValueback to summary
public Comparable<T> getValue()

Returns the resource consumption value. Relevant only for event types NORMAL, WARNING and ERROR.

Returns:Comparable<T>

the resource consumption value, or null if a resource monitor is not relevant.

hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
Returns:int

a hash code value for this object

Annotations
@Override
isUpperThresholdback to summary
public boolean isUpperThreshold()

Returns true if the threshold triggering this event is an upper threshold. This method is only used when getType() returns NORMAL, WARNING or ERROR.

Returns:boolean

true if it is an upper threshold.

toStringback to summary
public String toString()

Overrides java.lang.Object.toString.

Doc from java.lang.Object.toString.

Returns a string representation of the object. Satisfying this method's contract implies a non-null result must be returned.

Returns:String

a string representation of the object

Annotations
@Override