WindowsConfiguration
--------------------
Key: CONFIGURATION-312
URL: https://issues.apache.org/jira/browse/CONFIGURATION-312
Project: Commons Configuration
Issue Type: New Feature
Reporter: Emmanuel Bourg
Fix For: 2.x
This is a RFE to implement a configuration backed by the windows registry.
It can be implemented using an external library such as the ICE JNI Registry :
http://www.trustice.com/java/jnireg
It could also be implemented by hacking around the private WindowsPreferences
class from the JDK (with no guarantee it will work on later versions, on other
VMs, or on environments with a SecurityManager). Here is an example using this
approach and displaying the user's data directory :
{code:java}
Preferences winPrefs = Preferences.userRoot();
Class cls = winPrefs.getClass();
Method openKey = cls.getDeclaredMethod("openKey", byte[].class, int.class,
int.class);
openKey.setAccessible(true);
Method closeKey = cls.getDeclaredMethod("closeKey", int.class);
closeKey.setAccessible(true);
Method winRegQueryValue = cls.getDeclaredMethod("WindowsRegQueryValueEx",
int.class, byte[].class);
winRegQueryValue.setAccessible(true);
Method winRegEnumValue = cls.getDeclaredMethod("WindowsRegEnumValue1",
int.class, int.class, int.class);
winRegEnumValue.setAccessible(true);
Method winRegQueryInfo = cls.getDeclaredMethod("WindowsRegQueryInfoKey1",
int.class);
winRegQueryInfo.setAccessible(true);
Integer keyHandle = (Integer) openKey.invoke(winPrefs, toByteArray("Volatile
Environment"), KEY_READ, KEY_READ);
byte[] array = (byte[]) winRegQueryValue.invoke(winPrefs, keyHandle,
toByteArray("APPDATA"));
closeKey.invoke(winPrefs, keyHandle);
System.out.println(new String(array));
{code}
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