package com.firefly.mvc.web.support;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.firefly.annotation.HttpParam;
import com.firefly.annotation.PathVariable;
import com.firefly.annotation.RequestMapping;
import com.firefly.utils.ReflectUtils;
public class ControllerMetaInfo extends HandlerMetaInfo {
private final ParamMetaInfo[] paramMetaInfos; // @HttpParam标注的类的元信息
private final Set<String> allowHttpMethod;
public ControllerMetaInfo(Object object, Method method) {
super(object, method);
allowHttpMethod = new HashSet<String>(Arrays.asList(method.getAnnotation(RequestMapping.class).method()));
Class<?>[] paraTypes = method.getParameterTypes();
// 构造参数对象
paramMetaInfos = new ParamMetaInfo[paraTypes.length];
Annotation[][] annotations = method.getParameterAnnotations();
for (int i = 0; i < paraTypes.length; i++) {
Annotation anno = getAnnotation(annotations[i]);
if (anno != null) {
if(anno.annotationType().equals(HttpParam.class)) {
HttpParam httpParam = (HttpParam) anno;
ParamMetaInfo paramMetaInfo = new ParamMetaInfo(
paraTypes[i],
ReflectUtils.getSetterMethods(paraTypes[i]),
httpParam.value());
paramMetaInfos[i] = paramMetaInfo;
methodParam[i] = MethodParam.HTTP_PARAM;
} else if(anno.annotationType().equals(PathVariable.class)) {
if (paraTypes[i].equals(String[].class))
methodParam[i] = MethodParam.PATH_VARIBLE;
}
} else {
if (paraTypes[i].equals(HttpServletRequest.class))
methodParam[i] = MethodParam.REQUEST;
else if (paraTypes[i].equals(HttpServletResponse.class))
methodParam[i] = MethodParam.RESPONSE;
}
}
}
private Annotation getAnnotation(Annotation[] annotations) {
for (Annotation a : annotations) {
if (a.annotationType().equals(HttpParam.class) || a.annotationType().equals(PathVariable.class))
return a;
}
return null;
}
public ParamMetaInfo[] getParamMetaInfos() {
return paramMetaInfos;
}
public boolean allowMethod(String method) {
return allowHttpMethod.contains(method);
}
public String getAllowMethod() {
StringBuilder s = new StringBuilder();
for(String m : allowHttpMethod) {
s.append(m).append(',');
}
s.deleteCharAt(s.length() - 1);
return s.toString();
}
@Override
public String toString() {
return "ControllerMetaInfo [allowHttpMethod=" + allowHttpMethod + "]";
}
}