LU2 The ServiceRegistrar in Java

Creation Code 128 Code Set A in Java LU2 The ServiceRegistrar
LU2 The ServiceRegistrar
Generating Code 128 Code Set B In Java
Using Barcode generator for Java Control to generate, create Code 128 Code Set C image in Java applications.
O'Reilly Network Safari Bookshelf Jini Specifications, The, Second Edition
Bar Code Drawer In Java
Using Barcode printer for Java Control to generate, create barcode image in Java applications.
int TRANSITION_MATCH_NOMATCH = 1 << 0; int TRANSITION_NOMATCH_MATCH = 1 << 1; int TRANSITION_MATCH_MATCH = 1 << 2; EventRegistration notify(ServiceTemplate tmpl, int transitions, RemoteEventListener listener, MarshalledObject handback, long leaseDuration) throws RemoteException; Class[] getEntryClasses(ServiceTemplate tmpl) throws RemoteException; Object[] getFieldValues(ServiceTemplate tmpl, int setIndex, String field) throws NoSuchFieldException, RemoteException; Class[] getServiceTypes(ServiceTemplate tmpl, String prefix) throws RemoteException; ServiceID getServiceID(); LookupLocator getLocator() throws RemoteException; String[] getGroups() throws RemoteException; }
Decoding Bar Code In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
Every method invocation on ServiceRegistrar and ServiceRegistration is atomic with respect to other invocations The register method is used to register a new service and to re register an existing service The method is defined so that it can be used in an idempotent fashion Specifically, if a call to register results in a RemoteException (in which case the item might or might not have been registered), the caller can simply repeat the call to register with the same parameters, until it succeeds To register a new service, itemserviceID should be null In that case, if itemservice does not equal (using MarshalledObjectequals) any existing item's service object, then a new service ID will be assigned and included in the returned ServiceRegistration (described in the next section) The service ID is unique over time and space with respect to all other service IDs generated by all lookup services If itemservice does equal an existing item's service object, the existing item is first deleted from the lookup service (even if it has different attributes) and its lease is cancelled, but that item's service ID is reused for the newly registered item To re register an existing service, or to register the service in any other lookup service, itemserviceID should be set to the same service ID that was returned by the initial registration If an item is already registered under the same service ID, the existing item is first deleted (even if it has different attributes or a different service instance) and its lease is cancelled by the lookup service Note that service object equality is not checked in this case, to allow for reasonable evolution of the service (for example, the serialized form of the stub changes or the service implements a new interface) Any duplicate attribute sets that are included in a service item are eliminated in the stored representation of the item The lease duration request (specified in milliseconds) is not exact; the returned lease is allowed to have a shorter (but not longer) duration than what was requested The registration is persistent across restarts (crashes) of the lookup service until the lease expires or is cancelled The single parameter form of lookup returns the service object (that is, just ServiceItemservice) from an item matching the template or null if there is no match If multiple items match the template, it is arbitrary as to which service object is returned by the invocation If the returned object cannot be deserialized, an UnmarshalException is thrown with the standard RMI semantics
Code128 Generation In C#
Using Barcode creation for .NET Control to generate, create USS Code 128 image in Visual Studio .NET applications.
LU2 The ServiceRegistrar
Paint ANSI/AIM Code 128 In VS .NET
Using Barcode printer for ASP.NET Control to generate, create Code 128 image in ASP.NET applications.
O'Reilly Network Safari Bookshelf Jini Specifications, The, Second Edition The two parameter form of lookup returns at most maxMatches items matching the template and the total number of items that match the template The return value is never null, and the returned items array is null only if maxMatches is zero For each returned item, if the service object cannot be deserialized, the service field of the item is set to null and no exception is thrown Similarly, if an attribute set cannot be deserialized, that element of the attributeSets array is set to null and no exception is thrown The notify method is used to register for event notification The registration is leased; the lease duration request (specified in milliseconds) is not exact The registration is persistent across restarts (crashes) of the lookup service until the lease expires or is cancelled The event ID in the returned EventRegistration is unique at least with respect to all other active event registrations at this lookup service with different service templates or transitions While the event registration is in effect, a ServiceEvent is sent to the specified listener whenever a register, lease cancellation or expiration, or attribute change operation results in an item changing state in a way that satisfies the template and transition combination The transitions parameter is the bitwise OR of any non empty set of transition values: TRANSITION_MATCH_NOMATCH: An event is sent when the changed item matches the template before the operation, but doesn't match the template after the operation (this includes deletion of the item) TRANSITION_NOMATCH_MATCH: An event is sent when the changed item doesn't match the template before the operation (this includes not existing), but does match the template after the operation TRANSITION_MATCH_MATCH: An event is sent when the changed item matches the template both before and after the operation The getTransition method of ServiceEvent returns the singleton transition value that triggered the match The getServiceItem method of ServiceEvent returns the new state of the item (the state after the operation) or null if the item was deleted by the operation Note that this method is declared abstract; a lookup service uses a subclass of ServiceEvent to transmit the new state of the item however it chooses Sequence numbers for a given event ID are strictly increasing If there is no gap between two sequence numbers, no events have been missed; if there is a gap, events might (but might not) have been missed For example, a gap might occur if the lookup service crashes, even if no events are lost due to the crash As mentioned earlier, users are allowed to explore a collection of items down each of the major axes: entry class, attribute value, and service type The getEntryClasses method looks at all service items that match the specified template, finds every entry (among those service items) that either doesn't match any entry templates or is a subclass of at least one matching entry template, and returns the set of the (most specific) classes of those entries Duplicate classes are eliminated, and the order of classes within the returned array is arbitrary A null reference (not an empty array) is returned if there are no such entries or no matching items If a returned class cannot be deserialized, that element of the returned array is set to null and no exception is thrown The getFieldValues method looks at all service items that match the specified template, finds every entry (among those service items) that matches tmplattributeSetTemplates[setIndex], and returns the set of values of the specified field of those entries Duplicate values are eliminated, and the order of values within the returned array is arbitrary a null reference (not an empty array) is returned if there are no matching items If a returned value cannot be deserialized, that element of the returned array is set to null and no exception is thrown NoSuchFieldException is thrown if field does not name a field of the entry template
Create Code 128 Code Set A In .NET
Using Barcode maker for VS .NET Control to generate, create Code 128 Code Set A image in VS .NET applications.
Encoding Code 128C In VB.NET
Using Barcode printer for .NET Control to generate, create Code 128 Code Set C image in VS .NET applications.
Generate Barcode In Java
Using Barcode generation for Java Control to generate, create barcode image in Java applications.
Print Barcode In Java
Using Barcode drawer for Java Control to generate, create barcode image in Java applications.
RoyalMail4SCC Generator In Java
Using Barcode creator for Java Control to generate, create British Royal Mail 4-State Customer Barcode image in Java applications.
Bar Code Maker In Visual Studio .NET
Using Barcode generation for .NET framework Control to generate, create barcode image in .NET applications.
ANSI/AIM Code 39 Reader In .NET
Using Barcode reader for VS .NET Control to read, scan read, scan image in VS .NET applications.
Creating Barcode In VS .NET
Using Barcode encoder for ASP.NET Control to generate, create bar code image in ASP.NET applications.