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Table of Contents

Warning
titlePrevent SQL injection

When using Hash Variable that uses URL parameter or user-inputted value in the SQL query, ensure that these hash variable(s) are escaped in the query!

Make use of hash variable escape keywords, see Hash Variable - Escaping the Resultant Hash Variable.

Example of VULNERABLE query:

SELECT * FROM app_fd_sample_table WHERE c_value = '#requestParam.id#'

To fix this, use ?sql hash variable escape:

SELECT * FROM app_fd_sample_table WHERE c_value = '#requestParam.id?sql#'

Introduction

English

JDBC Datalist Action allows you to perform SQL queries on

...

one (a row action

...

) or more records (a bulk action) in your datalist. You can specify which database to perform the SQL function, either the current Joget database (default datasource) or a custom datasource (external database).

JDBC Datalist Action can be used to delete records or perform an update on one or more records based on user selection in the datalist checkboxes.

JDBC Datalist Action Properties

Configure JDBC Datalist Action

...

Image Added

Figure 1 : JDBC Action Menu

...

Image Added

Figure 2 : JDBC Datalist Action
Properties

NameDescription
Label

Datalist button label.

Confirmation Message

Confirmation message before performing action, for example "Are you sure?".

Datasource
  • Custom Datasource - setup to connect to an external database, has additional configuration.
  • Default Datasource - connect to the Joget database.

Target database to execute SQL statements on.

Choices:-

  • Custom Datasource
    • JDBC Connection Parameters are needed for this choice.
  • Default Datasource
    • Points to the current database your copy of Joget currently connects to
By selecting Default Datasource, the database your Joget is currently using will be selected
    • .
Custom JDBC Driver
Custom Code Block

JDBC

Driver. This field is required when Custom Datasource is selected in Datasource above. Example:

driver name.

Example values:

  • com.mysql.jdbc.Driver (MySQL)
  • oracle.jdbc.driver.OracleDriver (Oracle)
  • com.microsoft.sqlserver.jdbc.SQLServerDriver (Microsoft SQL Server)

Only applicable to "Custom Datasource" option.

Custom JDBC URL
Custom JDBC

Database connection URL.

This field is required when Custom Datasource is selected in Datasource above. Example: Code Blockjdbc

Example: jdbc:mysql://localhost:3306/jwdb

?characterEncoding=UTF8&useSSL=false

Only applicable to "Custom Datasource" option.

Custom JDBC Username

Custom JDBC Username
. This field is required when Custom Datasource is selected in Datasource above

Database username.

Example: root

Only applicable to "Custom Datasource" option.

Custom JDBC Password
Custom JDBC Password. This field is required when Custom Datasource is selected in Datasource above

Specified database user's password.

Only applicable to "Custom Datasource" option.

Info
titleTest the connection parameters

Click on the "Test Connection" button at the bottom of the page to quickly test out your configurations.

Query
Note

If a column name contains reserved keywords, do ensure it is encapsulated properly.

For example for MySQL, if the column identifier itself contains a dot symbol ( . ), it should be encapsulated like this:

Code Block
languagesql
SELECT `myAppName.myColumn` FROM app_fd_myTable;

Insert your SQL statement here. Use syntax like {id} in query to inject the selected row key. Use {uuid} to generate a unique id (or primary key). Examples:

Code Block
languagesql
title
Sample
Example
linenumberstrue
INSERT INTO
   app_fd_sample (id, c_clicked) 
VALUES
   (
      {uuid}, {id} 
   )
;
 Code Block
languagesql
title
Sample
Example
linenumberstrue
UPDATE
   app_fd_sample 
SET
   c_clicked = CONCAT(c_clicked, ',', {id}) 
WHERE
   id = 
'123';
{id}
 Code Block
languagesql
titleExample
linenumberstrue
DELETE
FROM
  
FROM
 app_fd_myTable 
WHERE
   id = {id}
 Info
titleTable & Column Naming
  • For database tables created by Joget Forms, Joget adds a "c_" in front of table column names (or "t_" if your column name starts with a number) and "app_fd_" in front of database table names.
  • If you use environment hash variables to store SQL query strings, in your hash variable, use "?noescape" to escape SQL query strings in JDBC binders to prevent the "<>" "not equal" operator from being converted, i.e. disables XSS prevention checking. Read here for more information..
 Info
titleHow it works?
The special parameters {id} and {uuid} will be replaced with actual values through the use of PreparedStatement. As you can see from the example above, there is no need to encapsulate both of these special keywords with quotes.
Related JDBC Binders & Useful Links
...
Download Demo App
APP_datalist_using_jdbc_dx_kb.jwa