public final class ActivationGroupDesc extends Object implements Serializable
An activation group descriptor contains the information necessary to create/recreate an activation group in which to activate objects. Such a descriptor contains:
The group's class must be a concrete subclass of ActivationGroup
. A subclass of ActivationGroup
is created/recreated via the ActivationGroup.createGroup
static method that invokes a special constructor that takes two arguments:
ActivationGroupID
, and java.rmi.MarshalledObject
)ActivationGroup
, ActivationGroupID
, Serialized FormModifier and Type | Class and Description |
---|---|
static class |
ActivationGroupDesc.CommandEnvironment Startup options for ActivationGroup implementations. |
public ActivationGroupDesc(Properties overrides, ActivationGroupDesc.CommandEnvironment cmd)
Constructs a group descriptor that uses the system defaults for group implementation and code location. Properties specify Java environment overrides (which will override system properties in the group implementation's VM). The command environment can control the exact command/options used in starting the child VM, or can be null
to accept rmid's default.
This constructor will create an ActivationGroupDesc
with a null
group class name, which indicates the system's default ActivationGroup
implementation.
overrides
- the set of properties to set when the group is recreated.cmd
- the controlling options for executing the VM in another process (or null
).public ActivationGroupDesc(String className, String location, MarshalledObject<?> data, Properties overrides, ActivationGroupDesc.CommandEnvironment cmd)
Specifies an alternate group implementation and execution environment to be used for the group.
className
- the group's package qualified class name or null
. A null
group class name indicates the system's default ActivationGroup
implementation.location
- the location from where to load the group's classdata
- the group's initialization data contained in marshalled form (could contain properties, for example)overrides
- a properties map which will override those set by default in the subprocess environment (will be translated into -D
options), or null
.cmd
- the controlling options for executing the VM in another process (or null
).public String getClassName()
Returns the group's class name (possibly null
). A null
group class name indicates the system's default ActivationGroup
implementation.
public String getLocation()
Returns the group's code location.
public MarshalledObject<?> getData()
Returns the group's initialization data.
public Properties getPropertyOverrides()
Returns the group's property-override list.
null
public ActivationGroupDesc.CommandEnvironment getCommandEnvironment()
Returns the group's command-environment control object.
null
public boolean equals(Object obj)
Compares two activation group descriptors for content equality.
equals
in class Object
obj
- the Object to compare withHashtable
public int hashCode()
Produce identical numbers for similar ActivationGroupDesc
s.
© 1993–2017, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.