package org.apache.torque.generator.configuration.controller;
/*
* 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.
*/
import java.io.IOException;
import java.io.InputStream;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.torque.generator.configuration.ConfigurationException;
import org.apache.torque.generator.configuration.ConfigurationHandlers;
import org.apache.torque.generator.configuration.ConfigurationProvider;
import org.apache.torque.generator.configuration.paths.ProjectPaths;
import org.xml.sax.InputSource;
import org.xml.sax.SAXNotRecognizedException;
import org.xml.sax.SAXNotSupportedException;
import org.xml.sax.SAXParseException;
/**
* Parses the xml file which provides the control configuration.
*/
public class ControlConfigurationXmlParser
{
/**
* The SaxParserFactory to create the SAX parsers for reading in the
* configuration files.
*/
private static SAXParserFactory saxFactory;
/** The logger. */
private static Log log
= LogFactory.getLog(ControlConfigurationXmlParser.class);
static
{
saxFactory = SAXParserFactory.newInstance();
saxFactory.setNamespaceAware(true);
try
{
saxFactory.setFeature(
"http://xml.org/sax/features/validation",
true);
saxFactory.setFeature(
"http://apache.org/xml/features/validation/schema", true);
}
catch (SAXNotSupportedException e)
{
throw new RuntimeException(e);
}
catch (SAXNotRecognizedException e)
{
throw new RuntimeException(e);
}
catch (ParserConfigurationException e)
{
throw new RuntimeException(e);
}
}
/**
* Reads the controller configuration out of a configurationProvider.
*
* @param configurationProvider the object for accessing the configuration,
* not null.
* @param projectPaths the paths inside the configuration, not null.
* @param configurationHandlers the available configuration handlers,
* not null.
*
* @return the Controller configuration.
* @throws ConfigurationException if an error in the configuration
* is encountered.
* @throws NullPointerException if an argument is null.
*/
public ControlConfiguration readControllerConfiguration(
ConfigurationProvider configurationProvider,
ProjectPaths projectPaths,
ConfigurationHandlers configurationHandlers)
throws ConfigurationException
{
InputStream controlConfigurationInputStream
= configurationProvider.getControlConfigurationInputStream();
try
{
ControlConfiguration result = new ControlConfiguration();
try
{
SAXParser parser = saxFactory.newSAXParser();
InputSource is
= new InputSource(controlConfigurationInputStream);
parser.parse(
is,
new ControlConfigurationSaxHandler(
result,
configurationProvider,
projectPaths,
configurationHandlers));
}
catch (SAXParseException e)
{
throw new ConfigurationException(
"Error parsing controller Configuration "
+ configurationProvider
.getControlConfigurationLocation()
+ " at line "
+ e.getLineNumber()
+ " column "
+ e.getColumnNumber()
+ " : "
+ e.getMessage(),
e);
}
catch (Exception e)
{
throw new ConfigurationException(
"Error parsing controller Configuration "
+ configurationProvider
.getControlConfigurationLocation()
+ e.getMessage(),
e);
}
return result;
}
finally
{
try
{
controlConfigurationInputStream.close();
}
catch (IOException e)
{
log.warn("Could not close controlConfigurationInputStream", e);
}
}
}
}