private DataAdapter<?> getAdapterInternal(final ByteArrayId adapterId) {
// first try to get it from the job context
DataAdapter<?> adapter = getDataAdapter(context, adapterId);
if (adapter == null) {
// then try to get it from the persistent store
adapter = persistentAdapterStore.getAdapter(adapterId);
}
if (adapter != null) {
adapterCache.put(adapterId, adapter);
}
return adapter;
}
@Override
public CloseableIterator<DataAdapter<?>> getAdapters() {
final CloseableIterator<DataAdapter<?>> it = persistentAdapterStore.getAdapters();
// cache any results
return new CloseableIteratorWrapper<DataAdapter<?>>(
it,
IteratorUtils.transformedIterator(
it,
new Transformer() {
@Override
public Object transform(final Object obj) {
if (obj instanceof DataAdapter) {
adapterCache.put(((DataAdapter) obj).getAdapterId(), (DataAdapter) obj);
}
return obj;
}
}));
}
public void addAdapter(DataAdapter<?> adapter) {
adapterCache.addAdapter(adapter);
}