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Listing 8-3 shows an example of an endpoint reference as it is included within a SOAP message. Compare this with Listing 8-2, which uses message information headers. Notice that the endpoint reference stores the addressing destination information in a different tag, and that it also contains dynamic reference information (such as AccountID) that is specific to the endpoint reference. Listing 8-3. Endpoint Reference XML <wsa:EndpointReference> <wsa:Address>soap.tcp://stocktrader.com/StockTrader</wsa:Address> <wsa:ReferenceProperties> <st:AccountID>123A</st:AccountID> </wsa:ReferenceProperties> <wsa:PortType>st:StockTraderSoap</wsa:PortType> <wsp:Policy /> </wsa:EndpointReference> Endpoint references do not replace message information headers because they are focused on describing binding information for the endpoint, not specific operation information. You do not get to choose between using message information headers vs. endpoint references. Message information addressing headers may include endpoint references for the destination elements in the message. But from a conceptual perspective, you can draw a distinction between the two constructs. Message information headers are a general construct for storing addressing information, for both the sender and the receiver. Endpoint references are more complex and dynamic and include SOAP binding information to the specific endpoint that the SOAP message is intended for. Luckily, WSE 3.0 sets up the classes so that the constructs can be kept distinct from a programming perspective. As with all the WS- specifications, you can drill down as far as you want to go and dive into increasing complexity. Inevitably, if you drill down far enough, you will discover a rich interaction between the specification elements, and the overall conceptual picture will begin to blur. Our goal here is to keep the conceptual discussion clear and to provide you with a solid grounding so that you can continue to explore on your own. code 39 font c# Code 39 C# DLL - Create Code 39 barcodes in C# with valid data
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C# .NET Code 39 generator to specify Code 39 images in Winforms and Web Forms, generate and save Code 39 in png, jpeg, gif, tiff, bmp image formats. Context ctx = new InitialContext(); EntityManager em =(EntityManager) ctx.lookup( "java:comp/env/pu/actionBazaar"); ut.begin(); em.persist(item); ut.commit(); ... } } The other alternative is to use an application-managed EntityManager with a JTA transaction. It is worth noting that EntityManagerFactory is thread-safe. c# code 39 Code 39 Mod 43 Checksum - Jon Hilton
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Setting Code 39 Barcode Size in C# | Using C# .NET Barcode Generator SDK to control linear Code - 39 barcode image settings in C# . Public methods and properties of a component allow invocations from a client to an object. A communication in the other direction is often necessary, too. As an example, in the context of starting a process, it can also be interesting to get the information about the termination of the started process. A straightforward approach would be to start a separate thread that waits for the process to terminate and performs a callback from the process component to its client when the process has exited. The process component in fact supports this feature. This feature is not turned on by default, but you can enable it by setting the EnableRaisingEvents property to true. To perform the callback when the process has exited, the Process component exposes an event called Exited. For the events exposed by a component, the Properties window supports a second view. Figure 5-7 shows the event view of the Properties window for the process component. Now that you are familiar with working with EntityManager inside the container, let s move on to the application-managed EntityManager. generate code 39 barcode using c# Code39 Barcode Control For Windows Applications sample in C# ...
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C# .NET Code 39 generator to specify Code 39 images in Winforms and Web Forms, generate and save Code 39 in png, jpeg, gif, tiff, bmp image formats. 9.2.2 Application-managed EntityManager An application-managed EntityManager wants nothing to do with a Java EE container. This means that you must write code to control every aspect of the EntityManager s lifecycle. By and large, application-managed EntityManagers are most appropriate for environments where a container is not available, such as Java SE or a lightweight web container like Tomcat. However, a justification to use application-managed EntityManagers inside a Java EE container is to maintain fine-grained control over the EntityManager lifecycle or transaction management. For this reason, as well as to maintain flexibility, the EJB 3 API provides a few conveniences for using application-managed EntityManagers inside a container. This happens to suit us well too, because it provides an effective approach to exploring application-managed EntityManagers (see listing 9.2) by reusing the code in listing 9.1. @Stateless public class ItemManagerBean implements ItemManager { @PersistenceUnit private EntityManagerFactory entityManagerFactory; private EntityManager entityManager; public ItemManagerBean() {} @PostConstruct WSE 3.0 implements the full WS-Addressing specification in a dedicated namespace called Microsoft.Web.Services3.Addressing. Table 8-2 summarizes some of the important WS-Addressing classes (each of which corresponds to an XML element in the WS-Addressing specification). public void initialize() { entityManager = entityManagerFactory.createEntityManager(); } Creates ... EntityManager public Item updateItem(Item item) { entityManager.joinTransaction(); Explicitly joins JTA transaction entityManager.merge(item); return item; } ... @PreDestroy public void cleanup() { if (entityManager.isOpen()) { Closes EntityManager entityManager.close(); } } ... Figure 5-7. The events view of the Properties window To handle an event, you can write the name of an event handler function into the text box of an event and press the Enter key. As an alternative, you can simply double-click in an event s text box. In this case, the name of the event handler will be the name of the component variable, followed by an underscore (_), followed by the name of the event. For the event shown in Figure 5-7, this would be process1_Exited. When you use the Properties window to handle the Exited event, the designer automatically adds an empty event handler function to your component class. Such an event handler looks like this one: private: void process1_Exited(Object^ sender, EventArgs^ e) { } The signature for the event handler function is specified by the event. For different events, there can be different signatures. However, all event handler signatures of the FCL follow a common pattern. Event handler signatures have void as a return type and two arguments. The first argument is always of type Object^. It identifies the instance that has fired the event. This argument is helpful if you handle an event of several child components with the same event handler function. The second argument contains event-specific data. For events that do not require event-specific data (like the Exited event discussed here), the type EventArgs^ is used for the second argument. c# barcode code 39 Code39 Barcode Control For Windows Applications sample in C# ...
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