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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.qpid.transport;
import org.apache.qpid.transport.network.Frame;
import java.nio.ByteBuffer;
import static org.apache.qpid.transport.util.Functions.*;
/**
* Method
*
* @author Rafael H. Schloming
*/
public abstract class Method extends Struct implements ProtocolEvent
{
public static final Method create(int type)
{
// XXX: should generate separate factories for separate
// namespaces
return (Method) StructFactory.createInstruction(type);
}
// XXX: command subclass?
private int id;
private int channel;
private boolean idSet = false;
private boolean sync = false;
private boolean batch = false;
public final int getId()
{
return id;
}
void setId(int id)
{
this.id = id;
this.idSet = true;
}
public final int getChannel()
{
return channel;
}
public final void setChannel(int channel)
{
this.channel = channel;
}
public final boolean isSync()
{
return sync;
}
final void setSync(boolean value)
{
this.sync = value;
}
public final boolean isBatch()
{
return batch;
}
final void setBatch(boolean value)
{
this.batch = value;
}
public abstract boolean hasPayload();
public Header getHeader()
{
return null;
}
public void setHeader(Header header)
{
throw new UnsupportedOperationException();
}
public ByteBuffer getBody()
{
return null;
}
public void setBody(ByteBuffer body)
{
throw new UnsupportedOperationException();
}
public abstract byte getEncodedTrack();
public abstract <C> void dispatch(C context, MethodDelegate<C> delegate);
public <C> void delegate(C context, ProtocolDelegate<C> delegate)
{
if (getEncodedTrack() == Frame.L4)
{
delegate.command(context, this);
}
else
{
delegate.control(context, this);
}
}
public String toString()
{
StringBuilder str = new StringBuilder();
str.append("ch=");
str.append(channel);
if (getEncodedTrack() == Frame.L4 && idSet)
{
str.append(" id=");
str.append(id);
}
if (sync || batch)
{
str.append(" ");
str.append("[");
if (sync)
{
str.append("S");
}
if (batch)
{
str.append("B");
}
str.append("]");
}
str.append(" ");
str.append(super.toString());
Header hdr = getHeader();
if (hdr != null)
{
for (Struct st : hdr.getStructs())
{
str.append("\n ");
str.append(st);
}
}
ByteBuffer body = getBody();
if (body != null)
{
str.append("\n body=");
str.append(str(body, 64));
}
return str.toString();
}
}
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