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java.rmi.activation
public final class: ActivationGroupDesc [javadoc | source]
java.lang.Object
   java.rmi.activation.ActivationGroupDesc

All Implemented Interfaces:
    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:

Nested Class Summary:
public static class  ActivationGroupDesc.CommandEnvironment  Startup options for ActivationGroup implementations. This class allows overriding default system properties and specifying implementation-defined options for ActivationGroups. 
Constructor:
 public ActivationGroupDesc(Properties overrides,
    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.

    Parameters:
    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).
    since: 1.2 -
 public ActivationGroupDesc(String className,
    String location,
    MarshalledObject<?> data,
    Properties overrides,
    CommandEnvironment cmd) 
    Specifies an alternate group implementation and execution environment to be used for the group.
    Parameters:
    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 class
    data - 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).
    since: 1.2 -
Method from java.rmi.activation.ActivationGroupDesc Summary:
equals,   getClassName,   getCommandEnvironment,   getData,   getLocation,   getPropertyOverrides,   hashCode
Methods from java.lang.Object:
clone,   equals,   finalize,   getClass,   hashCode,   notify,   notifyAll,   toString,   wait,   wait,   wait
Method from java.rmi.activation.ActivationGroupDesc Detail:
 public boolean equals(Object obj) 
    Compares two activation group descriptors for content equality.
 public String getClassName() 
    Returns the group's class name (possibly null). A null group class name indicates the system's default ActivationGroup implementation.
 public CommandEnvironment getCommandEnvironment() 
    Returns the group's command-environment control object.
 public MarshalledObject<?> getData() 
    Returns the group's initialization data.
 public String getLocation() 
    Returns the group's code location.
 public Properties getPropertyOverrides() 
    Returns the group's property-override list.
 public int hashCode() 
    Produce identical numbers for similar ActivationGroupDescs.