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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.documentapi.messagebus.protocol;
import com.yahoo.messagebus.Message;
import com.yahoo.messagebus.Routable;
import com.yahoo.text.Utf8String;
/**
* @author Simon Thoresen Hult
*/
public abstract class DocumentMessage extends Message {
private DocumentProtocol.Priority priority = DocumentProtocol.Priority.NORMAL_3;
/**
* Constructs a new message with no content.
*/
public DocumentMessage() {
// empty
}
/**
* Creates and returns a reply to this message.
*
* @return The created reply.
*/
public abstract DocumentReply createReply();
@Override
public void swapState(Routable rhs) {
super.swapState(rhs);
if (rhs instanceof DocumentMessage) {
DocumentMessage msg = (DocumentMessage)rhs;
DocumentProtocol.Priority pri = this.priority;
this.priority = msg.priority;
msg.priority = pri;
}
}
/**
* Returns the priority tag for this message. This is an optional tag added for VDS that is not interpreted by the
* document protocol.
*
* @return The priority.
* @deprecated explicit operation priority is deprecated
*/
@Deprecated(forRemoval = true) // TODO: Remove on Vespa 9
public DocumentProtocol.Priority getPriority() { return priority; }
/**
* Sets the priority tag for this message.
*
* @param priority The priority to set.
* @deprecated specifying explicit operation priority is deprecated
*/
@Deprecated(forRemoval = true) // TODO: Remove on Vespa 9
public void setPriority(DocumentProtocol.Priority priority) {
this.priority = priority;
}
@Override
public int getApproxSize() {
return 4 + 1; // type + priority // TODO update on Vespa 9 to not include deprecated fields
}
@Override
public Utf8String getProtocol() {
return DocumentProtocol.NAME;
}
}
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