com.pdd.pop.ext.glassfish.grizzly.utils.CompletionHandlerAdapter Maven / Gradle / Ivy
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package com.pdd.pop.ext.glassfish.grizzly.utils;
import com.pdd.pop.ext.glassfish.grizzly.CompletionHandler;
import com.pdd.pop.ext.glassfish.grizzly.impl.FutureImpl;
/**
*
* @author Alexey Stashok
*/
public class CompletionHandlerAdapter
implements CompletionHandler {
private final static GenericAdapter DIRECT_ADAPTER = new GenericAdapter() {
@Override
public Object adapt(final Object result) {
return result;
}
};
private final GenericAdapter adapter;
private final FutureImpl future;
private final CompletionHandler completionHandler;
public CompletionHandlerAdapter(FutureImpl future) {
this(future, null);
}
public CompletionHandlerAdapter(FutureImpl future,
CompletionHandler completionHandler) {
this(future, completionHandler, null);
}
public CompletionHandlerAdapter(FutureImpl future,
CompletionHandler completionHandler,
GenericAdapter adapter) {
this.future = future;
this.completionHandler = completionHandler;
if (adapter != null) {
this.adapter = adapter;
} else {
this.adapter = getDirectAdapter();
}
}
@Override
public void cancelled() {
if (completionHandler != null) {
completionHandler.cancelled();
}
if (future != null) {
future.cancel(false);
}
}
@Override
public void failed(Throwable throwable) {
if (completionHandler != null) {
completionHandler.failed(throwable);
}
if (future != null) {
future.failure(throwable);
}
}
@Override
public void completed(B result) {
final A adaptedResult = adapt(result);
if (completionHandler != null) {
completionHandler.completed(adaptedResult);
}
if (future != null) {
future.result(adaptedResult);
}
}
@Override
public void updated(B result) {
final A adaptedResult = adapt(result);
if (completionHandler != null) {
completionHandler.updated(adaptedResult);
}
}
protected A adapt(B result) {
return adapter.adapt(result);
}
@SuppressWarnings("unchecked")
private static GenericAdapter getDirectAdapter() {
return DIRECT_ADAPTER;
}
}