/**
* Looks up providers, and returns the property (and its associated provider) mapping the key, if
* any. The order in which the providers are looked up is the provider-preference order, as
* specificed in the security properties file.
*/
private static ProviderProperty getProviderProperty(String key) {
ProviderProperty entry = null;
List providers = Providers.getProviderList().providers();
for (int i = 0; i < providers.size(); i++) {
String matchKey = null;
Provider prov = (Provider) providers.get(i);
String prop = prov.getProperty(key);
if (prop == null) {
// Is there a match if we do a case-insensitive property name
// comparison? Let's try ...
for (Enumeration e = prov.keys(); e.hasMoreElements() && prop == null; ) {
matchKey = (String) e.nextElement();
if (key.equalsIgnoreCase(matchKey)) {
prop = prov.getProperty(matchKey);
break;
}
}
}
if (prop != null) {
ProviderProperty newEntry = new ProviderProperty();
newEntry.className = prop;
newEntry.provider = prov;
return newEntry;
}
}
return entry;
}
/**
* Returns the provider installed with the specified name, if any. Returns null if no provider
* with the specified name is installed or if name is null.
*
* @param name the name of the provider to get.
* @return the provider of the specified name.
* @see #removeProvider
* @see #addProvider
*/
public static Provider getProvider(String name) {
return Providers.getProviderList().getProvider(name);
}
