/*
* $Id: XPathAnnotationParser.java 20321 2010-11-24 15:21:24Z dfeist $
* --------------------------------------------------------------------------------------
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
*
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.module.xml.config;
import org.mule.api.annotations.expression.XPath;
import org.mule.api.annotations.meta.Evaluator;
import org.mule.api.expression.ExpressionAnnotationParser;
import org.mule.expression.ExpressionConfig;
import org.mule.expression.transformers.ExpressionArgument;
import org.mule.module.xml.i18n.XmlMessages;
import java.lang.annotation.Annotation;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* Used to parse Bean parameter annotations. Note this annotation only supports the Jaxp API and w3c Dom. There is
* not Dom4J support.
*
* @see org.mule.api.annotations.expression.XPath
* @see org.mule.module.xml.expression.XPathExpressionEvaluator
*/
public class XPathAnnotationParser implements ExpressionAnnotationParser
{
public ExpressionArgument parse(Annotation annotation, Class<?> parameterType)
{
Evaluator evaluator = annotation.annotationType().getAnnotation(Evaluator.class);
String eval = "xpath2";
String type;
if (evaluator != null)
{
if (parameterType.equals(Node.class) || parameterType.equals(org.dom4j.Node.class) ||
parameterType.equals(Element.class) || parameterType.equals(org.dom4j.Element.class) ||
parameterType.equals(Document.class) || parameterType.equals(org.dom4j.Document.class))
{
type = "[node]";
}
else if(NodeList.class.isAssignableFrom(parameterType))
{
type = "[nodeset]";
}
else if(Boolean.class.isAssignableFrom(parameterType))
{
type = "[boolean]";
}
else if(Double.class.isAssignableFrom(parameterType))
{
type = "[number]";
}
else if(String.class.isAssignableFrom(parameterType))
{
type = "[string]";
}
else
{
throw new IllegalArgumentException(XmlMessages.xpathResultTypeNotSupported(parameterType).getMessage());
}
return new ExpressionArgument(null, new ExpressionConfig(type + ((XPath) annotation).value(),
eval, null), ((XPath) annotation).optional(), parameterType);
}
else
{
throw new IllegalArgumentException("The @Evaluator annotation must be set on an Expression Annotation");
}
}
public boolean supports(Annotation annotation)
{
return annotation instanceof XPath;
}
}