Upgrade codes, add comments

src/main/java/cc/wdcy/domain/shared/security/WdcyUserDetails.java

@@ -26,6 +26,12 @@ public class WdcyUserDetails implements UserDetails {
         this.user = user;
     }
 
+    /**
+     * Note:  please change the codes in this method ,  make it is much more available .
+     * Just for test of current implements.
+     *
+     * @return Collection of GrantedAuthority
+     */
     @Override
     public Collection<? extends GrantedAuthority> getAuthorities() {
         return Arrays.asList(DEFAULT_USER_ROLE, new SimpleGrantedAuthority(ROLE_PREFIX + "UNITY"), new SimpleGrantedAuthority(ROLE_PREFIX + "MOBILE"));

src/main/java/cc/wdcy/infrastructure/DateUtils.java

@@ -8,6 +8,12 @@ import java.util.Date;
 public abstract class DateUtils {
 
 
+    /**
+     * Private constructor
+     */
+    private DateUtils() {
+    }
+
     public static Date now() {
         return new Date();
     }

src/main/java/cc/wdcy/infrastructure/PasswordHandler.java

@@ -8,6 +8,12 @@ import org.springframework.security.authentication.encoding.Md5PasswordEncoder;
 public abstract class PasswordHandler {
 
 
+    /**
+     * Private constructor
+     */
+    private PasswordHandler() {
+    }
+
     /**
      * Encrypt  password ,if original password is empty,
      *

src/main/resources/cc/wdcy/infrastructure/mybatis/UserMapper.xml

@@ -17,10 +17,6 @@
         <result property="username" column="username"/>
         <result property="lastLoginTime" column="last_login_time"/>
 
-        <!--<discriminator column="type_" javaType="String">-->
-        <!--<case value="Developer"-->
-        <!--resultMap="com.andaily.infrastructure.mybatis.user.DeveloperRepositoryMyBatis.developerMap"/>-->
-        <!--</discriminator>-->
     </resultMap>