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Introduction Jsonobject, Jsonarray, first introduce the next JsonconfigJsonconfig: Setclassmap (Map classmap)Sets the property type by setting the JSON property type, where the value in the JSON is list.New HashMap (); Jmap.put ("Contactpersonlist", ContactPerson. class ); Jmap.put ("Subscribedlist", investorsubscribed. class ); Jsonconfig.setclassmap (JMAP); Setrootclass (Class rootclass)Set the Java type to be converted by JSON Setexcludes (string[] excludes)Remove attributes that do n

-clicking the folder icon and selecting the Sharing and Security command option from the shortcut menu that appears. Second, click the Security tab of the Property Settings window, open the Tab Settings page, and in the group or User Name list box of the page, select the specific user account that you frequently log on to the system, for example, the "Ower" account is selected here. Next, in the corresponding Permissions for

'; * USER_TAB_COLUMNS:TABLE_NAME,COLUMN_NAME,DATA_TYPE,DATA_LENGTH,DATA_PRECISION,DATA_SCALE,NULLABLE,COLUMN_ID, etc. All_tab_columns:ower,table_name,column_name,data_type,data_length,data_precision,data_scale,nullable,column_ ID etc dba_tab_columns:ower, table_name,column_name,data_type,data_length,data_precision,data_scale,nullable,column_id etc//////////////////* From user_tab_comments/* user_tab_comments:table_name,table_type,comments corresponding dba_tab_comments,all_tab_comments, These

user's Table Select table_name from All_tables; --All users ' tables Select table_name from Dba_tables; --including system tables Select table_name from dba_tables where owner= ' lbsp '; --Get the table owned by user * * The username here should be remembered in uppercase. --Get table fields: In fact, this is based on the user's permissions to get the properties of the field (table name to capitalize) SELECT * from user_tab_columns where table_name= ' user table ';--get all the fields

folder is opened, the startup speed of the system will also be affected to some extent. To do this, simply set the properties of the shared folder to read-only if we don't want our shared resources to be edited and modified by others at will. Instead of simply setting it to "full sharing," Under this access attribute, the security of the shared folder is not guaranteed, but it can also affect the startup speed of the system. To screen out the full Control feature of a target shared folder, you

,DATA_LENGTH,DATA_PRECISION,DATA_SCALE,NULLABLE,COLUMN_ID, etc.All_tab_columns:OWER,TABLE_NAME,COLUMN_NAME,DATA_TYPE,DATA_LENGTH,DATA_PRECISION,DATA_SCALE,NULLABLE,COLUMN_ID, etc.Dba_tab_columns:OWER,TABLE_NAME,COLUMN_NAME,DATA_TYPE,DATA_LENGTH,DATA_PRECISION,DATA_SCALE,NULLABLE,COLUMN_ID, etc.*//* Get Table Comments: */SELECT * FROM User_tab_comments/*User_tab_comments:table_name,table_type,commentsThe corresponding dba_tab_comments,all_tab_comments, the two more than the User_tab_comments

,DATA_TYPE,DATA_LENGTH,DATA_PRECISION,DATA_SCALE,NULLABLE,COLUMN_ID, etc.All_tab_columns:OWER,TABLE_NAME,COLUMN_NAME,DATA_TYPE,DATA_LENGTH,DATA_PRECISION,DATA_SCALE,NULLABLE,COLUMN_ID, etc.Dba_tab_columns:OWER,TABLE_NAME,COLUMN_NAME,DATA_TYPE,DATA_LENGTH,DATA_PRECISION,DATA_SCALE,NULLABLE,COLUMN_ID, etc.*//* Get Table Comments: */SELECT * FROM User_tab_comments/*User_tab_comments:table_name,table_type,commentsThe corresponding dba_tab_comments,all_tab_comments, the two more than the User_tab_com

,COLUMN_NAME,DATA_TYPE,DATA_LENGTH,DATA_PRECISION,DATA_SCALE,NULLABLE,COLUMN_ID, etc.Get Table Comments:SELECT * FROM user_tab_commentsUser_tab_comments:table_name,table_type,commentsThe corresponding dba_tab_comments,all_tab_comments, the two more than the User_tab_comments ower column. Get field Comments:SELECT * FROM user_col_commentsUser_col_comments:table_name,column_name,commentsThe corresponding dba_col_comments,all_col_comments, the two more t

,DATA_PRECISION,DATA_SCALE,NULLABLE,COLUMN_ID, etc.Dba_tab_columns:OWER,TABLE_NAME,COLUMN_NAME,DATA_TYPE,DATA_LENGTH,DATA_PRECISION,DATA_SCALE,NULLABLE,COLUMN_ID, etc.Get Table Comments:SELECT * FROM User_tab_commentsUser_tab_comments:table_name,table_type,commentsAnd then there's the dba_tab_comments,all_tab_comments,These two are more than user_tab_comments ower columns.Get field Comments:SELECT * FROM User_col_commentsUser_col_comments:table_name,c

,DATA_LENGTH,DATA_PRECISION,DATA_SCALE,NULLABLE,COLUMN_ID, etc.All_tab_columns:OWER,TABLE_NAME,COLUMN_NAME,DATA_TYPE,DATA_LENGTH,DATA_PRECISION,DATA_SCALE,NULLABLE,COLUMN_ID, etc.Dba_tab_columns:OWER,TABLE_NAME,COLUMN_NAME,DATA_TYPE,DATA_LENGTH,DATA_PRECISION,DATA_SCALE,NULLABLE,COLUMN_ID, etc.*//* Get Table Comments: */SELECT * FROM User_tab_comments/*User_tab_comments:table_name,table_type,commentsThe corresponding dba_tab_comments,all_tab_comments, the two more than the User_tab_comments

Set permissions in Linux, generally with the chmod command1. IntroductionPermission Settings chmodFunction: Change the permissions command.Common parameters:1=x (Execute right) 2=w (write right) 4=r (read right)After the setuid is set, the file has the file owner's permissions, such as root permissionsSetgid set, the files created under the directory have the permissions of the group to which this directory belongsStickybit The file cannot be deleted after settingAction tip: chmod parameter file

owner (ower);File owner: Read R, write W, execute XUser groups: Read R, write W, execute XIf the permission bit is unreadable, non-writable, non-executable, it is represented by-.Read, write, and execute permissions for ordinary files can be understood as follows:可读：意味着我们可以查看阅读；可写：意味着，可以修改或删除（不过删除或修改的权限受父目录上的权限控制）；可执行：意味着如果文件就可以运行，比如二进制文件（比如命令），或脚本（要用脚本语言解释器来解释运行）。Like what:[[emailprotected] ~]# ls -l lsfile.sh-rwxr-xr-x 1 root root 7 04-21 12:47 ls

In a Linux system, you can use Setfacl to create files or subdirectories under the directory and inherit permissions from the parent directory.The following root with the ordinary user user1. Under directory/mnt[[emailprotected]mnt]#setfacl-mu:user1:rwxshare //add ower=user1nbsp to the directory, and give rwx the right root. [[emailprotected]mnt]#setfacl-d-mu:user1:rwxshare //adds default ACL permissions for the directory, and the directories and file

is no longer available, and I intend to use it as the/home standalone partition for maximum resource utilization, while the operation steps are similar to that of backing up the root partition. Create a new/home_new, mount the/dev/sda1 to/home_new, delete the contents of the/dev/sda1, and sync the contents of home/home to/home_new via rsync, rename/home to/home_bak,/ Home_new Rename to/home, and modify/etc/fstab as follows:/DEV/SDA1/home ext4 defaults,user,exec,dev,suid 0 0After the save

We know that the Javaapplet in the Web page is not like the image file can be directly from the browser to the SaveAs command to obtain, but still may be browsed from the cache to find, put their own web page. Therefore, one way to protect your applet from "stealing" is to have the applet run only on the Web page of the specified URL. In the Java language, the URL of the Web page where the applet resides can be obtained by means of a method getdocumenbase () in the Java.applet package. For exam

File system access listFacl: Saving control permissions with file extensionsPermission Application order: Ower->group->otherOwer->facl in User->group->facl in Group->otherSetfacl-M: SetU:uid:perm Setting OwnerG:gid:perm set GenusEg:setfacl-m U:HADOOP:RW Set Read and Write permissions to Hadoop users-X: CancelU:uid:perm Cancellation of OwnerG:gid:perm cancellation of genus GroupGetfacl:650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/80/1F/wK

consumed is con=6. Notice that there is other possible states of the network but the value of Con cannot exceed 6.InputThere is several data sets in the input. Each data set encodes a power network. It starts with four integers:0 OutputFor each data set from the input, the program prints on the standard output the maximum amount of power that can is consum Ed in the corresponding network. Each result have an integral value and are printed from the beginning of a separate line.Sample Input2 1 1

; Spool Run_monitor.sql Select ' Alter index ' | | owner| | '. ' | | index_name| | ' monitoring usage; ' From Dba_indexes where Ower not in (' SYS ', ' SYSTEM ', ' Perfstat ') ; Spool off; @run_monitor Wait until these important SQL is executed in the database, and search for the new V$object_usage view Select Index_name, TABLE_NAME, Mon Used From V$object_usage; As shown below, we can see that there is a column declared as used in the v$object_usage.

volumes yet. Unless you know which volume your file (s) are on your should start witch the last volume and work to wards The i. Specify next volume #:1 Extract file. /etc/passwd Add Links Set directory mode, Ower,and times. Set Owner/mode for '. '? (yn) n Directories already exit, set mode anyway? (yn) y Ufsrestore >quit A hot backup can take place when the database is turned on, typically by using the ALTER command to change the state of the table s

; ExtractExtract Requested FilesYou are have not read any volumes yet.Unless you know which volume your file (s) are on your should start witch the last volume and work to wardsThe i.Specify next volume #:1Extract file. /etc/passwdAdd LinksSet directory mode, Ower,and times.Set Owner/mode for.? (yn) nDirectories already exit, set mode anyway? (yn) yUfsrestore >quitA hot backup can take place when the database is turned on, typically by using the ALTER