/** Returns the object that is stored for the given type (or null if none is stored). */
@SuppressWarnings("unchecked")
public <T extends Serializable> T getValue(Class<T> clazz) throws StorageException {
byte[] bytes = store.getWithString(clazz.getName());
if (bytes == null) {
return null;
}
Object value;
try {
value =
SerializationUtils.deserializeFromByteArray(
bytes, Thread.currentThread().getContextClassLoader());
} catch (ClassNotFoundException e) {
throw new StorageException(e);
} catch (IOException e) {
throw new StorageException(e);
}
if (!clazz.isInstance(value)) {
throw new StorageException(
"Storage system returned object of unexpected type: " + value.getClass());
}
return (T) value;
}
/**
* Sets a value using an explicit class. This is useful if the value used is a subclass, but the
* more general type should be used for storing.
*/
public <S extends Serializable, T extends S> void setValue(T value, Class<S> explicitClass)
throws StorageException {
try {
store.putWithString(explicitClass.getName(), SerializationUtils.serializeToByteArray(value));
} catch (IOException e) {
throw new StorageException(e);
}
}