/*
* ============================================================================
* GNU Lesser General Public License
* ============================================================================
*
* Beanlet - JSE Application Container.
* Copyright (C) 2006 Leon van Zantvoort
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* Leon van Zantvoort
* 243 Acalanes Drive #11
* Sunnyvale, CA 94086
* USA
*
* zantvoort@users.sourceforge.net
* http://beanlet.org
*/
package org.beanlet.naming.impl;
import java.lang.reflect.Method;
import org.beanlet.annotation.AnnotationValueResolver;
import static org.beanlet.naming.impl.NamingConstants.*;
import java.lang.annotation.Annotation;
import java.util.Collections;
import java.util.List;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathFactory;
import org.beanlet.annotation.AnnotationProxy;
import org.beanlet.naming.NamingContext;
import org.beanlet.naming.NamingProperty;
import org.beanlet.common.AbstractElementAnnotationFactory;
import org.beanlet.common.AbstractProvider;
import org.beanlet.plugin.ElementAnnotationContext;
import org.beanlet.plugin.ElementAnnotationFactory;
import org.beanlet.plugin.spi.ElementAnnotationFactoryProvider;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
*
* @author Leon van Zantvoort
*/
public class NamingContextElementAnnotationFactoryProviderImpl extends AbstractProvider
implements ElementAnnotationFactoryProvider {
public List<ElementAnnotationFactory> getElementAnnotationFactories() {
final XPath xpath = XPathFactory.newInstance().newXPath();
xpath.setNamespaceContext(NAMING_NAMESPACE_CONTEXT);
ElementAnnotationFactory factory = new AbstractElementAnnotationFactory() {
public String getNamespaceURI() {
return NAMING_NAMESPACE_URI;
}
public String getNodeName() {
return "naming-context";
}
public Class<? extends Annotation> annotationType() {
return NamingContext.class;
}
public Object getValueFromNode(Node node, String elementName,
Class type, final Object parentValue,
ElementAnnotationContext ctx) throws Throwable {
if (elementName.equals("value")) {
NodeList names = (NodeList) xpath.evaluate(
"./:property/@name", node, XPathConstants.NODESET);
NodeList values = (NodeList) xpath.evaluate(
"./:property/@value", node, XPathConstants.NODESET);
assert names.getLength() == values.getLength();
NamingProperty[] props = new NamingProperty[names.getLength()];
for (int i = 0; i < names.getLength(); i++) {
final String name = names.item(i).getNodeValue();
final String value = values.item(i).getNodeValue();
props[i] = AnnotationProxy.newProxyInstance(
NamingProperty.class, ctx.getClassLoader(),
new AnnotationValueResolver() {
public Object getValue(Method method, ClassLoader loader) throws Throwable {
final Object o;
if (method.getName().equals("name")) {
o = name;
} else if (method.getName().equals("value")) {
o = value;
} else {
o = method.getDefaultValue();
}
return o;
}
});
}
return props;
} else {
return super.getValueFromNode(node, elementName, type,
parentValue, ctx);
}
}
};
return Collections.singletonList(factory);
}
}