org.apache.qpid.proton.codec.impl.IntegerElement Maven / Gradle / Ivy
/*
*
* 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.proton.codec.impl;
import java.nio.ByteBuffer;
import org.apache.qpid.proton.codec.Data;
class IntegerElement extends AtomicElement
{
private final int _value;
IntegerElement(Element parent, Element prev, int i)
{
super(parent, prev);
_value = i;
}
@Override
public int size()
{
if(isElementOfArray())
{
final ArrayElement parent = (ArrayElement) parent();
if(parent.constructorType() == ArrayElement.SMALL)
{
if(-128 <= _value && _value <= 127)
{
return 1;
}
else
{
parent.setConstructorType(ArrayElement.LARGE);
return 4;
}
}
else
{
return 4;
}
}
else
{
return (-128 <= _value && _value <= 127) ? 2 : 5;
}
}
@Override
public Integer getValue()
{
return _value;
}
@Override
public Data.DataType getDataType()
{
return Data.DataType.INT;
}
@Override
public int encode(ByteBuffer b)
{
int size = size();
if(size <= b.remaining())
{
switch(size)
{
case 2:
b.put((byte)0x54);
case 1:
b.put((byte)_value);
break;
case 5:
b.put((byte)0x71);
case 4:
b.putInt(_value);
}
return size;
}
return 0;
}
}