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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.management.domain.model;
import org.apache.qpid.management.Messages;
import org.apache.qpid.management.domain.model.type.Type;
import org.apache.qpid.transport.codec.Decoder;
import org.apache.qpid.transport.util.Logger;
/**
* Layer supertype for qpid properties and statistics.
*
* @author Andrea Gazzarini
*/
class QpidAttribute extends QpidFeature
{
private final static Logger LOGGER = Logger.get(QpidAttribute.class);
/** feature type */
protected Type _type;
/** feature unit */
protected String _unit;
/**
* Returns the units used for numeric values (i.e. seconds, bytes, etc.)
*
* @return the units used for numeric values (i.e. seconds, bytes, etc.)
*/
String getUnit ()
{
return _unit;
}
/**
* Sets the unit for this property.
*
* @param unit the unit of this property.
*/
void setUnit (String unit)
{
this._unit = unit;
}
/**
* Returns the java type (class) of this feature.
*
* @return the java type (class) of this feature.
*/
Class<?> getJavaType ()
{
return _type.getJavaType();
}
/**
* Sets the type of this feature.
*
* @param type the type of this feature.
*/
void setType (Type type)
{
this._type = type;
}
/**
* Gets the value of this feature according to its type definition.
*
* @param decoder the decoder used to extract the value.
* @return the value of this feature according to its type definition
*/
Object decodeValue(Decoder decoder)
{
try {
return _type.decode(decoder);
} catch(RuntimeException exception)
{
LOGGER.error(exception,Messages.QMAN_100014_ATTRIBUTE_DECODING_FAILURE,this);
throw exception;
}
}
@Override
public String toString ()
{
return super.toString()+",type="+_type;
}
}
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