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package com.pdd.pop.ext.glassfish.grizzly.asyncqueue;
/**
* Class encapsulates asynchronous queue implementation:
* {@link AsyncQueueReader}, {@link AsyncQueueWriter}.
*
* @author Alexey Stashok
*/
public interface AsyncQueueIO {
/**
* Get {@link AsyncQueueReader} implementation.
*
* @return {@link AsyncQueueReader} implementation.
*/
AsyncQueueReader getReader();
/**
* Get {@link AsyncQueueWriter} implementation.
*
* @return {@link AsyncQueueWriter} implementation.
*/
AsyncQueueWriter getWriter();
class Factory {
public static AsyncQueueIO createImmutable(
final AsyncQueueReader reader, final AsyncQueueWriter writer) {
return new ImmutableAsyncQueueIO(reader, writer);
}
public static MutableAsyncQueueIO createMutable(
final AsyncQueueReader reader, final AsyncQueueWriter writer) {
return new MutableAsyncQueueIO(reader, writer);
}
}
final class ImmutableAsyncQueueIO implements AsyncQueueIO {
private final AsyncQueueReader reader;
private final AsyncQueueWriter writer;
private ImmutableAsyncQueueIO(final AsyncQueueReader reader, final AsyncQueueWriter writer) {
this.reader = reader;
this.writer = writer;
}
/**
* {@inheritDoc}
*/
@Override
public AsyncQueueReader getReader() {
return reader;
}
/**
* {@inheritDoc}
*/
@Override
public AsyncQueueWriter getWriter() {
return writer;
}
}
final class MutableAsyncQueueIO implements AsyncQueueIO {
private volatile AsyncQueueReader reader;
private volatile AsyncQueueWriter writer;
private MutableAsyncQueueIO(final AsyncQueueReader reader,
final AsyncQueueWriter writer) {
this.reader = reader;
this.writer = writer;
}
/**
* {@inheritDoc}
*/
@Override
public AsyncQueueReader getReader() {
return reader;
}
public void setReader(AsyncQueueReader reader) {
this.reader = reader;
}
/**
* {@inheritDoc}
*/
@Override
public AsyncQueueWriter getWriter() {
return writer;
}
public void setWriter(AsyncQueueWriter writer) {
this.writer = writer;
}
}
}