/*
* 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.commons.configuration;
/**
* <p>A specialized SAX2 XML parser that processes configuration objects.</p>
*
* <p>This class mimics to be a SAX compliant XML parser. It is able to iterate
* over the keys in a configuration object and to generate corresponding SAX
* events. By registering a <code>ContentHandler</code> at an instance
* it is possible to perform XML processing on a configuration object.</p>
*
* @author <a href="mailto:[email protected]">Oliver Heger</a>
* @version $Id: BaseConfigurationXMLReader.java 439648 2006-09-02 20:42:10Z oheger $
*/
public class BaseConfigurationXMLReader extends ConfigurationXMLReader
{
/** Stores the actual configuration.*/
private Configuration config;
/**
* Creates a new instance of <code>BaseConfigurationXMLReader</code>.
*/
public BaseConfigurationXMLReader()
{
super();
}
/**
* Creates a new instance of <code>BaseConfigurationXMLReader</code> and
* sets the configuration object to be parsed.
*
* @param conf the configuration to be parsed
*/
public BaseConfigurationXMLReader(Configuration conf)
{
this();
setConfiguration(conf);
}
/**
* Returns the actual configuration to be processed.
*
* @return the actual configuration
*/
public Configuration getConfiguration()
{
return config;
}
/**
* Sets the configuration to be processed.
*
* @param conf the configuration
*/
public void setConfiguration(Configuration conf)
{
config = conf;
}
/**
* Returns the configuration to be processed.
*
* @return the actual configuration
*/
public Configuration getParsedConfiguration()
{
return getConfiguration();
}
/**
* The main SAX event generation method. This element uses an internal
* <code>HierarchicalConfigurationConverter</code> object to iterate over
* all keys in the actual configuration and to generate corresponding SAX
* events.
*/
protected void processKeys()
{
fireElementStart(getRootName(), null);
new SAXConverter().process(getConfiguration());
fireElementEnd(getRootName());
}
/**
* An internally used helper class to iterate over all configuration keys
* ant to generate corresponding SAX events.
*
*/
class SAXConverter extends HierarchicalConfigurationConverter
{
/**
* Callback for the start of an element.
*
* @param name the element name
* @param value the element value
*/
protected void elementStart(String name, Object value)
{
fireElementStart(name, null);
if (value != null)
{
fireCharacters(value.toString());
}
}
/**
* Callback for the end of an element.
*
* @param name the element name
*/
protected void elementEnd(String name)
{
fireElementEnd(name);
}
}
}
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