package org.nutz.mvc.adaptor.injector;
import java.util.Map;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.nutz.lang.Strings;
import org.nutz.lang.inject.Injecting;
/**
* 为PairUploadAdaptor提供支持
* 当get方法的refer为Map时，使用Map的key获取值进行注入
*
* @author lAndRaxeE(landraxee@gmail.com)
*
*/
public class MapReferInjector extends ObjectPairInjector {
public MapReferInjector(String prefix, Class<?> type) {
super(prefix, type);
}
@SuppressWarnings("unchecked")
@Override
public Object get(ServletContext sc, HttpServletRequest req,
HttpServletResponse resp, Object refer) {
Object obj = mirror.born();
Map<String, Object> map = null;
if (Map.class.isAssignableFrom(refer.getClass()))
map = (Map<String, Object>) refer;
for (int i = 0; i < injs.length; i++) {
Injecting inj = injs[i];
Object s;
if (null != map && map.containsKey(names[i]))
s = map.get(names[i]);
else
s = req.getParameter(names[i]);
if (null == s)
continue;
if (s instanceof String && Strings.isBlank((String) s))
s = null;
inj.inject(obj, s);
}
return obj;
}
}