/**
* INTERNAL: Return the database platform specific information. This allows TopLink to configure
* certain advanced features for the database desired. NOTE: this must only be used for relational
* specific usage and will not work for non-relational datasources.
*/
public DatabasePlatform getPlatform() {
try {
return (DatabasePlatform) getDatasourcePlatform();
} catch (ClassCastException wrongType) {
throw ValidationException.notSupportedForDatasource();
}
}
/**
* INTERNAL: Set the name of the Platform to be used. Creates a new instance of the specified
* Class.
*/
public void setPlatformClassName(String platformClassName) throws ValidationException {
Class platformClass = null;
try {
// First try loading with the Login's class loader
platformClass = this.getClass().getClassLoader().loadClass(platformClassName);
Platform platform = null;
if (PrivilegedAccessHelper.shouldUsePrivilegedAccess()) {
try {
platform =
(Platform)
AccessController.doPrivileged(new PrivilegedNewInstanceFromClass(platformClass));
} catch (PrivilegedActionException exception) {
throw exception.getException();
}
} else {
platform = (Platform) PrivilegedAccessHelper.newInstanceFromClass(platformClass);
}
usePlatform(platform);
} catch (Exception cne) {
// next try using ConversionManager
try {
platformClass = ConversionManager.loadClass(platformClassName);
Platform platform = null;
if (PrivilegedAccessHelper.shouldUsePrivilegedAccess()) {
try {
platform =
(Platform)
AccessController.doPrivileged(
new PrivilegedNewInstanceFromClass(platformClass));
} catch (PrivilegedActionException exception) {
throw ValidationException.platformClassNotFound(
exception.getException(), platformClassName);
}
} else {
platform = (Platform) PrivilegedAccessHelper.newInstanceFromClass(platformClass);
}
usePlatform(platform);
} catch (Exception cne2) {
// if still not found, throw exception
throw ValidationException.platformClassNotFound(cne2, platformClassName);
}
}
}