org.apache.qpid.proton.codec.transport.DispositionType Maven / Gradle / Ivy
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*
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* 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
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
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package org.apache.qpid.proton.codec.transport;
import java.util.AbstractList;
import java.util.List;
import org.apache.qpid.proton.amqp.Symbol;
import org.apache.qpid.proton.amqp.UnsignedInteger;
import org.apache.qpid.proton.amqp.UnsignedLong;
import org.apache.qpid.proton.amqp.transport.DeliveryState;
import org.apache.qpid.proton.amqp.transport.Disposition;
import org.apache.qpid.proton.amqp.transport.Role;
import org.apache.qpid.proton.codec.AbstractDescribedType;
import org.apache.qpid.proton.codec.DecodeException;
import org.apache.qpid.proton.codec.Decoder;
import org.apache.qpid.proton.codec.DescribedTypeConstructor;
import org.apache.qpid.proton.codec.EncoderImpl;
public final class DispositionType extends AbstractDescribedType implements DescribedTypeConstructor
{
private static final Object[] DESCRIPTORS =
{
UnsignedLong.valueOf(0x0000000000000015L), Symbol.valueOf("amqp:disposition:list"),
};
private static final UnsignedLong DESCRIPTOR = UnsignedLong.valueOf(0x0000000000000015L);
DispositionType(EncoderImpl encoder)
{
super(encoder);
}
public UnsignedLong getDescriptor()
{
return DESCRIPTOR;
}
@Override
protected List wrap(Disposition val)
{
return new DispositionWrapper(val);
}
private static final class DispositionWrapper extends AbstractList
{
private Disposition _disposition;
public DispositionWrapper(Disposition disposition)
{
_disposition = disposition;
}
public Object get(final int index)
{
switch(index)
{
case 0:
return _disposition.getRole().getValue();
case 1:
return _disposition.getFirst();
case 2:
return _disposition.getLast();
case 3:
return _disposition.getSettled();
case 4:
return _disposition.getState();
case 5:
return _disposition.getBatchable();
}
throw new IllegalStateException("Unknown index " + index);
}
public int size()
{
return _disposition.getBatchable()
? 6
: _disposition.getState() != null
? 5
: _disposition.getSettled()
? 4
: _disposition.getLast() != null
? 3
: 2;
}
}
public Disposition newInstance(Object described)
{
List l = (List) described;
Disposition o = new Disposition();
if(l.isEmpty())
{
throw new DecodeException("The first field cannot be omitted");
}
switch(6 - l.size())
{
case 0:
Boolean batchable = (Boolean) l.get(5);
o.setBatchable(batchable == null ? false : batchable);
case 1:
o.setState( (DeliveryState) l.get( 4 ) );
case 2:
Boolean settled = (Boolean) l.get(3);
o.setSettled(settled == null ? false : settled);
case 3:
o.setLast( (UnsignedInteger) l.get( 2 ) );
case 4:
o.setFirst( (UnsignedInteger) l.get( 1 ) );
case 5:
o.setRole( Boolean.TRUE.equals(l.get( 0 )) ? Role.RECEIVER : Role.SENDER );
}
return o;
}
public Class getTypeClass()
{
return Disposition.class;
}
public static void register(Decoder decoder, EncoderImpl encoder)
{
DispositionType type = new DispositionType(encoder);
for(Object descriptor : DESCRIPTORS)
{
decoder.register(descriptor, type);
}
encoder.register(type);
}
}