<method> <ejb−name>Product</ejb−name> <method−name>findByCategory</method−name>...

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Smutek to uczucie, jak gdyby się tonęło, jak gdyby grzebano cię w ziemi.
} page 252 Programming C# } Although in this example these two classes are very similar, in a production program any number of disparate classes...
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Some Java ORB products offer proprietary solutions to this problem...
Producer:RosaSoftDistribution formatWinTalker product is distributed on two diskettes...
The Arrays class has another sort( ) method that takes a single argument: an array of Object, but with no Comparator...
Every programming language enables some method for declaring local (or global) variables that can be used to store data...
C# also supports the params modifier which allows a method to accept a variable number of parameters...
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3

Smutek to uczucie, jak gdyby się tonęło, jak gdyby grzebano cię w ziemi.

lang.String</method−param>
<method−param>java.lang.String</method−param>
</method−params>
</method>
Finally, you have one more way to provide restrictions — some classes have both remote and local interfaces declared for accessing a particular bean. The most common restriction here is to prevent the caller from accessing some methods that are available in both the remote and local interfaces. For example, a setter method may be available to all local users, but only to remote users of a specific role. Declaring whether a method belongs to a remote or local interface declaration is the job of the method−intf element. This element is inserted between the ejb−name and method−name elements. There are four valid values: Local, Remote, Home, and LocalHome.
<method>
<ejb−name>Product</ejb−name>
<method−intf>Remote</method−intf>
<method−name>findByCategory</method−name>
Now that you know how to declare methods, it's time to use them in something. You can declare methods to be completely off−limits, or you can create a free−for−all.
At the tightest end of the spectrum is the list of methods that cannot be called at all. These methods are listed in the exclude−list element. exclude−list is placed as the last element of the assembly−descriptor (before the exclude−list are a couple of elements that we'll be covering shortly). Inside exclude−list you list all the methods that should not be accessed:
<assembly−descriptor>
...
<exclude−list>
<method>
<ejb−name>Product</ejb−name>
<method−name>setProductID</method−name>
</method>
<method>
<ejb−name>UnusedBean</ejb−name>
<method−name>*</method−name>
</method>
</exclude−list>
</assembly−descriptor>
Lightening up the heavy−handed restrictions is the job of the method−permission element, which can be found just ahead of the exclude−list. In this element, you place the list of methods and the roles that are allowed access.
Inside the method−permission element, you find a collection of individual methods and the role(s) that are allowed to access them. Each permission declaration starts with the list of acceptable role names, followed by the method declarations of all the methods affected by these permissions:
<assembly−descriptor>
<method−permission>
<role−name>stores</role−name>
<role−name>call−center</role−name>
<method>
<ejb−name>Product</ejb−name>
<method−name>getProductID</method−name>
</method>
424
Chapter 17: Using Advanced EJB Techniques
<method>
<ejb−name>Order</ejb−name>
<method−name>*</method−name>
</method>
</method−permission>
<method−permission>
<role−name>customer−servlet</role−name>
<method>
<ejb−name>Customer</ejb−name>
<method−name>*</method−name>
</method>
</method−permission>
<exclude−list>
...
</exclude−list>
</assembly−descriptor>
Caution The EJB 2.0 specification does not mention the order of priorities when declarations conflict with each other. It is best to double−check everything you provide to make sure no conflicts exist.
If you would like to go all the way and let any user call a method, you can substitute the empty element unchecked for the list of role−name in the method−permission. The result is that the server always lets requests to these methods go through:
<method−permission>
<unchecked/>
<method>
<ejb−name>Customer</ejb−name>
<method−name>*</method−name>
</method>