package org.nutz.mvc.adaptor.injector;
import java.lang.reflect.Type;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.nutz.lang.Mirror;
import org.nutz.lang.Strings;
import org.nutz.mapl.Mapl;
import org.nutz.mvc.adaptor.ParamExtractor;
import org.nutz.mvc.adaptor.ParamInjector;
import org.nutz.mvc.adaptor.Params;
/**
* 对象导航注入器 默认情况下只有使用 @Param("::") 的情况下才调用这个注入器
* <p/>
* 毕竟它在接收到请求时进行注入,会有一定的性能损伤
*
* @author juqkai(juqkai@gmail.com)
* @author wendal(wendal1985@gmail.com)
*
*/
public class ObjectNavlPairInjector implements ParamInjector {
protected Mirror<?> mirror;
private String prefix;
private Type type;
public ObjectNavlPairInjector(String prefix, Type type) {
prefix = Strings.isBlank(prefix) ? "" : Strings.trim(prefix);
this.prefix = prefix;
this.mirror = Mirror.me(type);
this.type = type;
}
public Object get( ServletContext sc,
HttpServletRequest req,
HttpServletResponse resp,
Object refer) {
ObjectNaviNode no = new ObjectNaviNode();
String pre = "";
if ("".equals(prefix))
pre = "node.";
ParamExtractor pe = Params.makeParamExtractor(req, refer);
for (Object name : pe.keys()) {
String na = (String) name;
if (na.startsWith(prefix)) {
no.put(pre + na, pe.extractor(na));
}
}
Object model = no.get();
Object re = Mapl.maplistToObj(model, type);
return re;
// return no.inject(mirror);
}
}