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------------------------------------------------------------
revno: 9644
committer: Lars Helge Øverland <larshelge@xxxxxxxxx>
branch nick: dhis2
timestamp: Mon 2013-01-28 19:14:42 +0200
message:
  Added method for checking if uid is valid
modified:
  dhis-2/dhis-api/src/main/java/org/hisp/dhis/common/CodeGenerator.java


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=== modified file 'dhis-2/dhis-api/src/main/java/org/hisp/dhis/common/CodeGenerator.java'
--- dhis-2/dhis-api/src/main/java/org/hisp/dhis/common/CodeGenerator.java	2013-01-16 10:46:53 +0000
+++ dhis-2/dhis-api/src/main/java/org/hisp/dhis/common/CodeGenerator.java	2013-01-28 17:14:42 +0000
@@ -28,6 +28,7 @@
  */
 
 import java.security.SecureRandom;
+import java.util.regex.Pattern;
 
 /**
  * @author bobj
@@ -42,6 +43,8 @@
     public static final int NUMBER_OF_CODEPOINTS = allowedChars.length();
     public static final int CODESIZE = 11;
 
+    private static final Pattern CODE_PATTERN = Pattern.compile( "^[a-zA-Z0-9]{11}$" );
+    
     /**
      * Generates a pseudo random string using the allowed characters. Code is
      * 11 characters long.
@@ -77,4 +80,15 @@
         
         return new String( randomChars );
     }
+    
+    /**
+     * Tests whether the given code is valid.
+     * 
+     * @param code the code to validate.
+     * @return true if the code is valid.
+     */
+    public boolean isValidCode( String code )
+    {
+        return code != null && CODE_PATTERN.matcher( code ).matches();
+    }
 }