/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This 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 software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.pojo.descriptor;
import org.jboss.as.pojo.service.BeanInfo;
import org.jboss.as.pojo.service.DefaultBeanInfo;
import org.jboss.as.server.deployment.reflect.DeploymentReflectionIndex;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Deque;
import java.util.List;
/**
* Abstract config visitor node.
*
* @author <a href="mailto:ales.justin@jboss.org">Ales Justin</a>
*/
public abstract class AbstractConfigVisitorNode implements ConfigVisitorNode, TypeProvider {
public void visit(ConfigVisitor visitor) {
visitor.visit(this);
}
/**
* Add children as needed.
*
* @param visitor the current visitor
* @param nodes the nodes list to add to
*/
protected void addChildren(ConfigVisitor visitor, List<ConfigVisitorNode> nodes) {
}
public Iterable<ConfigVisitorNode> getChildren(ConfigVisitor visitor) {
List<ConfigVisitorNode> nodes = new ArrayList<ConfigVisitorNode>();
addChildren(visitor, nodes);
return nodes;
}
/**
* Get temp bean info.
*
* @param visitor the visitor
* @param className the class name
* @return bean info
*/
protected static BeanInfo getTempBeanInfo(ConfigVisitor visitor, String className) {
return getTempBeanInfo(visitor, getType(visitor, className));
}
/**
* Get temp bean info.
*
* @param visitor the visitor
* @param clazz the class
* @return bean info
*/
@SuppressWarnings({"unchecked"})
protected static BeanInfo getTempBeanInfo(ConfigVisitor visitor, Class<?> clazz) {
return new DefaultBeanInfo(visitor.getReflectionIndex(), clazz);
}
/**
* Get temp bean info.
*
* @param clazz the class
* @return bean info
*/
@SuppressWarnings({"unchecked"})
protected static BeanInfo getTempBeanInfo(Class<?> clazz) {
return new DefaultBeanInfo(DeploymentReflectionIndex.create(), clazz);
}
/**
* Load class.
*
* @param visitor the visitor
* @param className the class name
* @return class or null if null class name
*/
protected static Class<?> getType(ConfigVisitor visitor, String className) {
if (className != null) {
try {
return visitor.getModule().getClassLoader().loadClass(className);
} catch (Exception e) {
throw new IllegalArgumentException(e);
}
}
return null;
}
/**
* Get component type.
*
* @param type the type
* @param index the component index
* @return component's class or null if cannot be determined
*/
static Type getComponentType(ParameterizedType type, int index) {
Type[] tp = type.getActualTypeArguments();
if (index + 1 > tp.length)
return null;
return tp[index];
}
@Override
public Class<?> getType(ConfigVisitor visitor, ConfigVisitorNode previous) {
Deque<ConfigVisitorNode> nodes = visitor.getCurrentNodes();
if (nodes.isEmpty())
throw new IllegalArgumentException("Cannot determine type - insufficient info on configuration!");
ConfigVisitorNode current = nodes.pop();
try {
if (current instanceof TypeProvider) {
return TypeProvider.class.cast(current).getType(visitor, current);
} else {
return getType(visitor, current);
}
} finally {
nodes.push(current);
}
}
}