/**
* Copyright 2005-2011 Noelios Technologies.
*
* The contents of this file are subject to the terms of one of the following
* open source licenses: LGPL 3.0 or LGPL 2.1 or CDDL 1.0 or EPL 1.0 (the
* "Licenses"). You can select the license that you prefer but you may not use
* this file except in compliance with one of these Licenses.
*
* You can obtain a copy of the LGPL 3.0 license at
* http://www.opensource.org/licenses/lgpl-3.0.html
*
* You can obtain a copy of the LGPL 2.1 license at
* http://www.opensource.org/licenses/lgpl-2.1.php
*
* You can obtain a copy of the CDDL 1.0 license at
* http://www.opensource.org/licenses/cddl1.php
*
* You can obtain a copy of the EPL 1.0 license at
* http://www.opensource.org/licenses/eclipse-1.0.php
*
* See the Licenses for the specific language governing permissions and
* limitations under the Licenses.
*
* Alternatively, you can obtain a royalty free commercial license with less
* limitations, transferable or non-transferable, directly at
* http://www.noelios.com/products/restlet-engine
*
* Restlet is a registered trademark of Noelios Technologies.
*/
package org.restlet.engine.io;
import java.io.IOException;
import org.restlet.util.SelectionRegistration;
// [excludes gwt]
/**
* Byte channel wrapping a byte buffer.
*/
public abstract class BufferedSelectionChannel<T extends SelectionChannel>
extends WrapperSelectionChannel<T> implements BufferProcessor {
/** The source IO buffer. */
private final Buffer buffer;
/**
* Constructor.
*
* @param buffer
* The source byte buffer, typically remaining from previous read
* processing.
* @param source
* The source channel.
*/
public BufferedSelectionChannel(Buffer buffer, T source) {
super(source);
setRegistration(new SelectionRegistration(0, null));
this.buffer = buffer;
}
/**
* Indicates if the processing loop can continue.
*
* @param buffer
* The IO buffer to drain.
* @param args
* The optional arguments to pass back to the callbacks.
* @return True if the processing loop can continue.
*/
public boolean canLoop(Buffer buffer, Object... args) {
return true;
}
@Override
public void close() throws IOException {
// Don't actually close to protect the persistent connection
}
/**
* Returns the source buffer.
*
* @return The source buffer.
*/
public Buffer getBuffer() {
return buffer;
}
/**
* Called back when a fill operation returns with an EOF status.
*/
public void onFillEof() {
}
/**
* Does nothing by default.
*/
public void onProcessed(int drained) throws IOException {
}
}