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The Normalizer.Form enumeration is only one part of the new java.text.Normalizer utility class. This class also includes a public static String normalize(CharSequence src, Normalizer.Form form) method for normalizing a src sequence of chars according to a specific Unicode normalization form, and a public static boolean isNormalized(CharSequence src, Normalizer.Form form) method that returns true if src is normalized according to the specific form. Each method throws NullPointerException if you pass null to src or form. Interestingly, Normalizer is not really new. Prior to Java SE 6, a version of this class existed in a private package. It was used behind the scenes by the java.text. RuleBasedCollator class, a concrete subclass of Collator, to perform locale-sensitive String comparisons based on a variety of rules. Although you can use Normalizer in partnership with String s equals() and compareTo() methods to perform more accurate string comparisons, you really should use Collator/RuleBasedCollator for comparing strings. This is because the Collator and RuleBasedCollator classes recognize that the sorting order for accented letters differs from language to language. Furthermore, when it comes to sorting, some languages place accented letters after all base letters, whereas other languages place accented letters immediately after their base letters. You might consider using Normalizer when implementing additional Collator subclasses that need to handle more complex comparisons. Also, this class is handy for replacing a string s accented letters with unaccented equivalents; you can then use the resulting strings to name files, directories, database tables, URIs, and other entities on platforms that do not support accented letters in these names. Listing 5-4 presents the source code for a handy utility application for accomplishing this task.

The Has_perms_by_name system function evaluates whether or not the current connection has granted permissions to access a specific securable (granted permissions either explicitly, or inherently through a higher-scoped securable). In both examples in this recipe, the first parameter used was the securable name (the database name or table name). The second parameter was the securable class, for example OBJECT or DATABASE. The third parameter used was the actual permission to be validated, for example ALTER, UPDATE, or SELECT (depending on which permissions are applicable

In this recipe, I ll demonstrate using the fn_my_permissions function to return the assigned permissions for the currently connected principal. The syntax for this function is as follows: fn_my_permissions ( securable , 'securable_class') The arguments for this command are described in Table 18-17. Table 18-17. fn_my_permissions Arguments

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In the previous section, we talked about the most common performance-related configuration options that Apache offers. The important thing to remember is that there is no secret recipe of options to give you optimum performance. For example, if you set MaxSpareServers too high, you ll find that although there are plenty of processes running, Apache ends up spending more time switching between them than actually getting work done. If MinSpareServers is set too low, you may find that if your web site has an uneven load (busy and quiet times), Apache may spend too much time creating and destroying server processes. Again, this takes time away from actually serving requests. For most average workloads, the Apache defaults are perfectly acceptable. If you want to try to improve performance, make small changes, and retest often. Lastly, for most people, far greater performance benefits can be gained by designing the web site for performance. For example, separating out CSS and JavaScript from your HTML files will allow them to be cached, and hence there will be less load placed on your server.

// RemoveAccents.java import java.awt.*; import java.awt.event.*; import java.text.*; import javax.swing.*; public class RemoveAccents extends JFrame { public RemoveAccents () { super ("Remove Accents"); setDefaultCloseOperation (EXIT_ON_CLOSE);

The name of the securable to verify. Use NULL if you are checking permissions at the server or database scope. The securable class that you are listing permissions for.

This first example demonstrates checking the server-scoped permissions for the current connection: SELECT permission_name FROM fn_my_permissions(NULL, N'SERVER') ORDER BY permission_name This returns the following results (this query example was executed under the context of sysadmin, so in this case every available server-scoped permission is returned): ADMINISTER BULK OPERATIONS ALTER ANY CONNECTION ALTER ANY CREDENTIAL ALTER ANY DATABASE ALTER ANY ENDPOINT ALTER ANY EVENT NOTIFICATION ALTER ANY LINKED SERVER ALTER ANY LOGIN ALTER RESOURCES ALTER SERVER STATE ALTER SETTINGS ALTER TRACE AUTHENTICATE SERVER CONNECT SQL CONTROL SERVER CREATE ANY DATABASE CREATE DDL EVENT NOTIFICATION CREATE ENDPOINT CREATE TRACE EVENT NOTIFICATION EXTERNAL ACCESS ASSEMBLY SHUTDOWN UNSAFE ASSEMBLY VIEW ANY DATABASE VIEW ANY DEFINITION VIEW SERVER STATE If you have IMPERSONATE permissions on the login or database user, you can also check the permissions of another principal other than your own by using the EXECUTE AS command. In 10 I demonstrated how to use EXECUTE AS to specify a stored procedure s security context. You can also

JPanel pnl = new JPanel (); pnl.add (new JLabel ("Enter text")); final JTextField txtText; txtText = new JTextField (" fa ade touch "+ "Rindfleischetikettierungs berwachungsaufgaben bertragungsgesetz "); pnl.add (txtText); JButton btnRemove = new JButton ("Remove"); ActionListener al; al = new ActionListener () { public void actionPerformed (ActionEvent e) { String text = txtText.getText (); text = Normalizer.normalize (text, Normalizer.Form.NFD); txtText.setText (text.replaceAll ("[^\\p{ASCII}]", "")); } }; btnRemove.addActionListener (al); pnl.add (btnRemove); getContentPane ().add (pnl); pack (); setVisible (true); } public static void main (String [] args) { Runnable r = new Runnable () { public void run () { new RemoveAccents (); } }; EventQueue.invokeLater (r); } }

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