Atinav java bluetooth sdk software

This service is more advanced with JavaScript available. Bluetooth for Java. Authors Bruce Hopkins Ranjith Antony. Describes how to use Java and Bluetooth on multiple platforms and devices Focuses on practical examples, not just what the technology is Only Java-centric for Bluetooth title available Includes supplementary material: sn. Front Matter Pages i-xix. Introducing Bluetooth. DiscoveryAgent provides methods to discover services on a Bluetooth server device and to initiate service-discovery transactions.

Before a service can be discovered, it must first be registered or advertised on a Bluetooth server device.

The server is responsible for a number of things, including creating a service record that describes the service offered, accepting connections from clients, and adding a service record to the server's Service Discovery Database SDDB. In general, it works like Web services. Listing D is an example of service registration.

Communcation The two devices must share a common communications protocol. Device addresses are similar to physical addresses of computers. Peter V. Mikhalenko is a Sun certified professional who works for Deutsche Bank as a business consultant.

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We moved our classes and mappings to the data subdirectory of road2hibernate. Of course we need to adjust our package declaration in the java files and the classnames in the mapping files. As we will use WebWork for our application and Velocity as template engine for the views, you will need to get WebWork from here. You will need the webwork Place all of them into the lib directory of the development dir. Now we will configure our application to use WebWork. At first we need a web. This file contains only the declaration of the packages where WebWork will look for its actions.

Now we will make our build process place all the files together and generate the appropriate structure for the web application:. Running this target will create a directory called war , which will contain the web application just like it will later be structured in the war file. After running this target, the war directory will look like this:. Now we will add tomcat specific tasks to our build file, so we can directly install our application into tomcat using ant.

You need to adjust the example to your environment:. So now startup tomcat and run ant install from the commandline - this will install the application to tomcat. We will now have to create some content for the application to display. Our first WebWork action will be very simple - it will do nothing so far but forwarding to a view:. The class extends ActionSupport but does not override any methods. This is what we still have to do in the xwork.

This defines an action called eventlist which will be handled by our EventList class. In addition, the success view gets defined. We now have to write the eventlist. As you see, this is just a simple HTML file - we will modify it to include dynamic content later on. Now run ant reload. When using such features as lazy loading, Hibernate needs an open session. To do this easily in a web application we will use a simple pattern. We will create a servlet filter which will manage our session and close it at the end of the web request.

Also we improve our HibernateUtil class to include transaction handling per-thread:. A ThreadLocal will contain an instance of a variable once for every thread. So if there are two parallel Threads executing, the ThreadLocal will contain two session. In SessionManager, the doFilter method will be invoked on every request.

It will let the request go on by calling chain. After the request processing finished and chain. It also commits the transaction - if the transaction was already committed or rolled back, HibernateUtil will simply do nothing. Our Actions can invoke the static currentSession method of the HibernateUtil to get a Session - if it is invoked multiple times during one thread, the same session will be used every time.

The HibernateUtil. Also in the destroy method of the filter, we once again do our hsqldb-housekeeping work. So now we have set up our supporting framework, we can finally start to use Hibernate for loading data in our action:.

We simply retrieve the session from our HibernateUtil, and load the list of Events using session. Then we assign it to an attribute of our action. Now we can use this attribute from our view:. Using the velocity template language, we simply iterate over the events, and print their titles. Now that our infrastructure is in place, you see how easy it is to create actions and views.

So we will create another action to create events. As you see, this action has two doXXX methods. The reason is we will use WebWorks ability to invoke different methods of the action class. Lets have a look at the xwork. So we have now a new action called newevent. This action has two results, the success-result which is returned by the execute method and the input-result which is returned by the doEnter method.

If you look at the index. The submit-target of our form however will just link to "newevent. So far for this chapter, in the upcoming next chapter we will examine the power of HQL more deeply. You can download the part four development directory here.

As we now have mapped a single object, we are now going to add various object associations. For a starter, we will add users to our application, and store a list of participating users with every event. In addition, we will give each user the possibility to watch various events for updates. Every user will have the standard personal data, including a list of email addresses. So far this is only basic hibernate usage.

But now we will add the collection of favorite Events to the User class. For this we can use a simple java collection - a Set in this case, because the collection will not contain duplicate elements and the ordering is not relevant for us. As you can see, we tell Hibernate about the set property called favouriteEvents.

We have to consider what kind of association we have: Every User my have multiple favorite Events, but every Event may be a favorite of multiple Users. For many to many associations, we need an association table where hibernate can store the associations. The association table needs at least two columns, one for every side of the association.

After loading an User and an Event with Hibernate, we can simply modify the collection using the normal collection methods. As you can see, there is no explicit call to session. Sometimes however, we will have a User or an Event loaded in a different session. This is of course possible to:.

This time, we need an explicit call to update - Hibernate can't know if the object actually changed since it was loaded in the previous session. So if we have an object from an earlier session, we must update it explicitly. If the object gets changed during session lifecycle we can rely on Hibernates automatic dirty checking.

Since Hibernate 2. NONE :. Often you will want to map collections of simple value types - like a collections of Integers or a collection of Strings. We will do this for our User class with a collection of Strings representing email addresses. So we add another Set to our class:.

As you can see, the new set mapping looks a lot like the last one. As you see, you can use the mapped collection just like every java collection. Hibernates automatic dirty detection will do the rest of the job.

For objects from another session - or disconnected objects, as we will call them from now - the same as above aplies. Explicitly update them, or reassociate them before updating using session. Next we are going to map a bidirectional association - the User class will contain a list of events where the user participates, and the Event class will contain a list of participating users.

So first we adjust our classes:. What this means is the other side - the Event class - will manage the relation. So when only the Set in the User class is changed, this will not get perstisted. Also when using explicit update for detatched objects, you need to update the one not marked as inverse. Let's see an example:. At first it is important to know that we are still responsible for keeping our associations properly set up on the java side - that means if we add an Event to the eventsJoined Set of an User object, we also have to add this User object to the participatingUsers Set in the Event object.

So we will add some convenience methods to the Event class:. Notice that the get and set methods for participatingUsers are now protected - this allows classes in the same package and subclasses to still access the methods, but prevents everybody else from messing around with the collections directly. In the next chapter we will integrate Hibernate with Tomcat and WebWork to create a better test environment - as you will notice when you look at the code, the EventManager class is really ugly now.

You can download the part three development directory here. You're a Java developer, and you've finally got yourself a Bluetooth device. Or perhaps you've heard a lot about Bluetooth, but you aren't sure what exactly you can do with it.

In either case, you've had some exposure to Bluetooth, and now you're ready to start flexing your programming muscles with the technology. The purpose of this article is to give you a good introduction to the Bluetooth protocol, including an overview of its protocol layers and profiles.

The former defines details for the communication between An overview of the Bluetooth stack is presented in Atinav avelink bluetooth audio devices, while the latter describes how to write Java appli- 1. We will develop a file transfer utility wherein the server transfers a file to the client over Bluetooth. I strongly suggest you give it a static IP address. Printing and the audio block in the Realtek AC'.

All the profiles are developed in pure ANSI C and can be easily integrated with various embedded platforms. Current solution offerings within the device to. Atinav is dedicated to the development of Bluetooth. The Bluetooth technology achieves this feature, by providing services at a low cost and with a low power con- sumption.

The Waves MaxxAudio application is an audio suite that enhances the audio performance of the computer. Posted September 11, with 18 AWG wire. Stack for 3, Discover the ground up to. For Windows CE for point to date but your sound.