SuperDirective.java

package cn.org.rapid_framework.velocity.directive;

import java.io.IOException;
import java.io.Writer;

import org.apache.velocity.context.InternalContextAdapter;
import org.apache.velocity.exception.MethodInvocationException;
import org.apache.velocity.exception.ParseErrorException;
import org.apache.velocity.exception.ResourceNotFoundException;
import org.apache.velocity.runtime.parser.node.Node;

import cn.org.rapid_framework.velocity.directive.OverrideDirective.OverrideNodeWrapper;

/**
 * @author badqiu
 */
public class SuperDirective extends org.apache.velocity.runtime.directive.Directive{

	@Override
	public String getName() {
		return "super";
	}

	@Override
	public int getType() {
		return LINE;
	}

	@Override
	public boolean render(InternalContextAdapter context, Writer writer, Node node)
			throws IOException, ResourceNotFoundException, ParseErrorException,MethodInvocationException {
		
		OverrideNodeWrapper current = (OverrideNodeWrapper)context.get(Utils.OVERRIDE_CURRENT_NODE);
		if(current == null) {
			throw new ParseErrorException("#super direction must be child of override");
		}
		OverrideNodeWrapper parent = current.parentNode;
		if(parent == null) {
			throw new ParseErrorException("not found parent block for #super ");
		}
		return parent.render(context,writer);
	}



}