package org.simantics.xml.sax.base;

import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import org.simantics.db.WriteGraph;
import org.simantics.db.exception.DatabaseException;

public abstract class XMLElementNamedChildParserBase implements XMLElementNamedChildParser{
	
	private Map<String,Class<? extends XMLElementParser>> namedParsers = new HashMap<String, Class<? extends XMLElementParser>>();
	private Set<Class<? extends XMLElementParser>> parsers = new HashSet<Class<? extends XMLElementParser>>();
	
	@Override
	public Class<? extends XMLElementParser> getParser(Map<String, XMLElementParser> parsers, ParserElement element, ParserElement child) {
		Class<? extends XMLElementParser> parserClass =  namedParsers.get(child.getLocalName());
		if (parserClass != null)
			return parserClass;
		XMLElementParser parser = parsers.get(child.getLocalName());
		if (parser == null)
			return null;
		parserClass = parser.getClass();
		if (this.parsers.contains(parserClass))
			return parserClass;
		for (Class<?> c : this.parsers)
			if (c.isAssignableFrom(parserClass))
				return parserClass;
		return null;
	}
	
	public void addParser(String name, Class<? extends XMLElementParser> parser) {
		namedParsers.put(name, parser);
	}
	
	public void addParser(Class<? extends XMLElementParser> parser) {
		parsers.add(parser);
	}
	
//	@Override
//	public void configureChild(WriteGraph graph, Stack<Element> parents, Element element, Element child) throws DatabaseException {
//
//	}
	
	@Override
	public void configure(WriteGraph graph, ParserElement element, String string) throws DatabaseException {
		
	}
	
	@Override
	public String getID() {
		return null;
	}
	
	@Override
	public int idPriority() {
		return 0;
	}
	

}