org.apache.qpid.proton.codec.impl.StringElement 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 java.nio.charset.Charset;
import org.apache.qpid.proton.amqp.Symbol;
import org.apache.qpid.proton.codec.Data;
class StringElement extends AtomicElement
{
private static final Charset UTF_8 = Charset.forName("UTF-8");
private final String _value;
StringElement(Element parent, Element prev, String s)
{
super(parent, prev);
_value = s;
}
@Override
public int size()
{
final int length = _value.getBytes(UTF_8).length;
return size(length);
}
private int size(int length)
{
if(isElementOfArray())
{
final ArrayElement parent = (ArrayElement) parent();
if(parent.constructorType() == ArrayElement.SMALL)
{
if(length > 255)
{
parent.setConstructorType(ArrayElement.LARGE);
return 4+length;
}
else
{
return 1+length;
}
}
else
{
return 4+length;
}
}
else
{
if(length >255)
{
return 5 + length;
}
else
{
return 2 + length;
}
}
}
@Override
public String getValue()
{
return _value;
}
@Override
public Data.DataType getDataType()
{
return Data.DataType.STRING;
}
@Override
public int encode(ByteBuffer b)
{
final byte[] bytes = _value.getBytes(UTF_8);
final int length = bytes.length;
int size = size(length);
if(b.remaining()