/*
* $Id$
*
* Copyright 2006, The jCoderZ.org Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
* * Neither the name of the jCoderZ.org Project nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.jcoderz.commons.taskdefs;
import java.io.File;
import java.io.FileInputStream;
import java.util.Iterator;
import java.util.List;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
/**
* Ant task that reads the master app-info.xml file, expands the XInclude
* elements and writes the whole XML document to a file.
* <p>
* This task can also perform a XML schema validation and perform
* some checks that cannot be done via the XML schema.
*
* @author Michael Griffel
*/
public final class AppInfoTask
extends XsltBasedTask
{
private static final String JAXP_SCHEMA_LANGUAGE
= "http://java.sun.com/xml/jaxp/properties/schemaLanguage";
private static final String W3C_XML_SCHEMA
= "http://www.w3.org/2001/XMLSchema";
private static final String JAXP_SCHEMA_SOURCE
= "http://java.sun.com/xml/jaxp/properties/schemaSource";
/** The default stylesheet name. */
private static final String DEFAULT_STYLESHEET
= "xinclude.xsl";
private static final String APP_INFO_SCHEMA = "app-info.xsd";
/** flag indicating if we should validate the app-info.xml. */
private boolean mValidate = true;
/**
* Set whether we should validate the app-info.xml file or not.
* Default is <tt>true</tt>.
*
* @param b Whether we should validate the app-info.xml file or not.
*/
public void setValidate (boolean b)
{
mValidate = b;
}
String getDefaultStyleSheet ()
{
return DEFAULT_STYLESHEET;
}
void checkAttributes ()
throws BuildException
{
// we don'T need the destDir attribute,
// so we don't call super.checkAttributes() here
checkAttributeInFile();
checkAttributeOutFile();
checkAttributeXslFile();
}
void postExecute ()
{
if (mValidate)
{
performSchemaValidation(getOutFile());
}
}
private void performSchemaValidation (File inFile)
{
try
{
// create a new XML parser
final SAXParserFactory factory = SAXParserFactory.newInstance();
factory.setNamespaceAware(true);
factory.setValidating(true);
final SAXParser parser = factory.newSAXParser();
parser.setProperty(JAXP_SCHEMA_LANGUAGE, W3C_XML_SCHEMA);
parser.setProperty(JAXP_SCHEMA_SOURCE,
AppInfoTask.class.getResource(APP_INFO_SCHEMA).toExternalForm());
final AppInfoSaxHandler handler = new AppInfoSaxHandler();
parser.parse(new InputSource(new FileInputStream(inFile)), handler);
if (handler.hasValidationErrors())
{
final SAXException e = handler.getParseException();
throw new BuildException("XML Schema validation failed: " + e, e);
}
if (handler.hasWarningMessages())
{
final List messages = handler.getWarningMessages();
for (final Iterator iterator = messages.iterator();
iterator.hasNext();)
{
final String msg = (String) iterator.next();
log(msg, Project.MSG_WARN);
}
}
log(inFile + " validated successfully.", Project.MSG_INFO);
}
catch (Exception e)
{
throw new BuildException("XML Schema validation failed: " + e, e);
}
}
}