Introduction

The OpenKM Document Management System (DMS) plugin facilitates the seamless integration of OpenKM and Joget. This integration currently utilises two plugin types:

• Form Options Binder - Retrieve folder paths from OpenKM.
• File Upload Element - Upload files to OpenKM. Bind folder paths from the select box field that uses the Form Options Binder. Able to choose whether to create folder that follows Joget form ID when uploading.
• Datalist Formatter - Format datalist file upload column to download file from OpenKM directly.

The plugin is created with the use of RESTful Guide - OpenKM Documentation to perform RESTful API calls on OpenKM.

Plugin Info

Plugin Available in the Bundle:

1. OpenKM DMS Plugin.

This plugin bundle is compatible with Joget DX 8.

Expected Outcome

Upon successful integration, Joget will be able to upload files into OpenKM browser based on the directory set by users.

Figure 1: Example of successful integration

Getting Started

Prerequisites

1. Java 8 Environment

In order to successfully install OpenKM, Java 8 is an essential prerequisite that must be present on the system environment, which can be downloaded from the Oracle Official Website. This version of Java provides the necessary runtime environment for OpenKM to operate effectively and efficiently. Without Java 8, the installation process may encounter errors or fail altogether, rendering OpenKM unusable.

2. OpenKM Community Version

OpenKM Community Version JAR file can be obtained from the Official OpenKM Website OpenKM "Community Version" Download Button. This official source ensures users access the most up-to-date and authentic version of the software, safeguarding against potential security risks and ensuring compatibility with existing systems.

3. OpenKM Database

OpenKM is able to integreate with MySQL, PostgreSQL, Oracle or SQL Server. In this article, we will be using MySQL as the OpenKM database.

Link to MySQL Download:

• https://dev.mysql.com/downloads/mysql/

Installation Guide:

• https://www.javatpoint.com/how-to-install-mysql

4. OpenKM DMS Plugin

To integrate Joget with OpenKM, we will use the OpenKM DMS Plugin from https://github.com/jogetoss/openkm-dms.

Setting up OpenKM DMS

1. OpenKM Installer Setup

To setup the OpenKM installer, open Command Prompt as Administrator and open the file directory where you stored the OpenKM installer.

In the command prompt, use java -jar OKMInstaller.jar to start installing OpenKM. After entering the command, it will display the output as image below and we can enter the configuration we prefer. 

Figure 2: OpenKM Configuration

OpenKM installation will install Tomcat automatically in the current path directory. After successfully installing OpenKM it will display a "SUCCESS: Specified value was saved." with a database query to create the database, user and password based on the information entered in Figure 2.

Figure 3: Successful Installation

CREATE DATABASE okmdb DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_bin;
CREATE USER openkm@localhost IDENTIFIED BY 'YourPassword';
GRANT ALL ON okmdb.* TO openkm@localhost WITH GRANT OPTION;

As a confirmation of a successful installation, open Services in the computer's system and search for OpenKM:

Figure 4: OpenKM Services

2. MySQL Setup

Access the root database to execute the query in Figure 3 to create "okmdb" database.

 Figure 5: Access Root Database

Figure 6: Creating okmdb Database

Go to Server > Users and Privileges and select the newly created User and check all the following boxes to give the User full privilege of the database. Not doing so will create an error when trying to access OpenKM browser.

Figure 7: Set Users Privileges

Figure 8: Select User and Check All the Roles

Create a new connection and enter all the information set in Figure 3.

Figure 9: Create New Connection

3. OpenKM.cfg First Time User Setup

For first time user, an error will occur when accessing OpenKM local browser because there is no existing UUID for the current user. To prevent this error from occurring, we will need to create a UUID when loading the browser. To do so we will make some configuration in the Tomcat folder.

Open Tomcat folder > OpenKM.cfg in IDE(Visual Studio code, Intellij, etc.) and make small changes in a line of code:

# OpenKM Hibernate configuration values
hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect
hibernate.hbm2ddl=none

# Logback configuration file
logback.config=logback.xml

# LibreOffice configuration
system.openoffice.program=D:/Joget/QA/OpenKM/OKM/tomcat-8.5.69/extras/LibreOffice/App/libreoffice/program/soffice.exe

# OpenKM Hibernate configuration values
hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect
hibernate.hbm2ddl=create //change in this line from "none" to "create"

# Logback configuration file
logback.config=logback.xml

# LibreOffice configuration
system.openoffice.program=D:/Joget/QA/OpenKM/OKM/tomcat-8.5.69/extras/LibreOffice/App/libreoffice/program/soffice.exe

4. OpenKM Server and Shutdown Port Changes

OpenKM Server and Shutdown Port needs to be changed since Joget's default ports will populate the same ports which prevents OpenKM from running. Thus, we need to configure the ports in the server.xml file.

Go to Tomcat folder > conf > server.xml

<Connector port="8180" address="0.0.0.0" protocol="HTTP/1.1"
               connectionTimeout="20000" redirectPort="8443"/>

<Server port="8006" shutdown="SHUTDOWN">
  <Listener className="org.apache.catalina.startup.VersionLoggerListener"/>

OpenKM in Runtime

To access the OpenKM browser, make sure the service is running as in Figure 4.

Open OpenKM in browser with http://localhost:{Port}/OpenKM.

When you see the following page, it shows that your OpenKM has been successfully hosted. Default login credentials are "okmAdmin" with password "admin".

Figure 10: OpenKM Login Page

After logging in, you will see the homepage of OpenKM.

Figure 11: OpenKM Homepage

Setup OpenKM Plugin

First, drag a select box and use the OpenKM DMS Form Options Binder to load the folder paths from OpenKM. Fill in the required credentials for the plugin to work as intended (Figure 12). The Root Folder UUID can be retrieved on the OpenKM folder that we intend to configure as root folder (Figure 13).

Figure 12: Joget Form Builder (Select Box with OpenKM DMS Form Options Binder)

Figure 13: Retrieve OpenKM Root Folder UUID 

Then, the OpenKM DMS File Upload tool can be drag and drop to attach into the form as a form element. Fill in the OpenKM Configurations with necessary details. If the credentials of OpenKM is invalid, "Authentication ERROR" will be shown in the element (Figure 14).

When configuring the Field Mapping, "Field for OpenKM Folder Path Upload" must point to the file path created in Figure 12, if no fields are mapped, the default file path will be "/okm:root".

Figure 14: Joget Form Builder (OpenKM DMS File Upload Element)

In the datalist builder, we can format the file upload column by using the OpenKM DMS Datalist Formatter. Similar configurations can be key in to enable users to download the file directly from datalist. Make sure the "file path" fields are in the datalist (can be configured to be hidden if we do not wish to show, but it must be there). If field mapping is not configured, the default file path will be "/okm:root".

Figure 15: Joget List Builder (OpenKM DMS Datalist Formatter)

If we do not wish to type the credentials multiple times, the credentials can also be easily added into environment variables, and then use a hash variable to refer to the values in environmental variables. For more information, please refer to Environment Variable - Knowledge Base for DX 7 - Joget | COMMUNITY.

OpenKM Plugin Demo

Upload File

After all the configurations has been done, the user can retrieve the folder paths from OpenKM in the select box, then choose a file to upload.

Figure 16: OpenKM DMS UI (Form)

After uploading, we can view the latest file path that the file has been uploaded to, and also download the file retrieved from OpenKM.

Figure 17: OpenKM DMS UI (List)

At OpenKM DMS, we can view the file being uploaded. If we modify the file here, we can also get the modified newest file in Joget.

Figure 18: OpenKM DMS Homepage with Uploaded File

To upload multiple files and other file upload features, please visit File Upload - Knowledge Base for DX 8 - Joget | COMMUNITY for further information.

Delete File

If "Delete Actual File During Overwrite or Removal?" checkbox is checked, when file is overwritten or removed, the actual file in OpenKM will be deleted.

Figure 19: Delete Actual File During Overwrite or Removal? Config

This was the existing record in OpenKM.

Figure 20: Existing file in OpenKM

Edit the existing record.

Figure 21: Edit existing record

 Click on remove and save the record.

Figure 22: Remove file and save

The file has been removed from the record. Please note that if you remove the entire record, it does not count as removing the file.

Figure 23: File removed from record

In OpenKM, the file has also been removed.

Figure 24: OpenKM file removed

To remove the folder generated automatically, "When actual file is deleted, also delete actual folder created by form ID? Please note that this action will delete all items within the folder in OpenKM."  checkbox has to be checked.

Figure 25: When actual file is deleted, also delete actual folder created by form ID? Please note that this action will delete all items within the folder in OpenKM Config

Upload a file to OpenKM again to test this. Repeat the steps above similarly to remove the file. Below shows the file uploaded in OpenKM.

Figure 26: File uploaded to OpenKM

Remove the file and save the form. 

Figure 27: Remove file

The file has been removed together with the folder. Please note that if you have other items under the folder, it will get removed as well.

Figure 28: File and folder removed in OpenKM

Update File Version

If "Create New Version" for Same File Upload Action is selected, a new version of the file will be uploaded to OpenKM instead of replacing the old file.

Figure 29: Create New Version for file

Now we try to upload some files into OpenKM.

Figure 30: Upload some files to OpenKM

The files are uploaded at Version 1.0 each.

Figure 31: Uploaded files at OpenKM

Update one of the files, in the example it is "joget_logo.jpeg".

Figure 32: Replace a file with same name

Now you can see the Version has increased from 1.0 to 1.1.

Figure 33: Replaced file has new version

Lock File

If "Lock File in OpenKM" is checked, the file will be locked when uploading to OpenKM.

Figure 34: Lock File in OpenKM

Go to the same form and upload "joget_logo.jpeg" again.

Figure 35: Replace a file to lock the new uploaded file

The file is now locked in OpenKM.

Figure 36: File Locked at OpenKM

OpenKM Setup Troubleshooting

1. Database Cannot Open Connection

The issue was cause due to the authentication method when setting up MySQL.

Figure 37: Cannot Open Connection Error

Troubleshooting Steps

1. Run MySQL installer.
2. Click Reconfigure for "MySQL Server".
3. In the Authentication Method change the default settings to Use Legacy Authentication Method.
4. Restart MySQL80 Service in Computer System Services and retry running OpenKM in browser.

Figure 38: Authentication Method

To read more about the error, please refer to this link https://188.40.247.219/viewtopic.php?t=23368 

2. Windows could not start the OpenKM on Local Computer.

The root can't be pinpoint because the issue differs for each machine. Thus, only workarounds can be provided.

Troubleshooting Steps.

1. Open Command Prompt.
2. Open Tomcat Folder > Bin > type in catalina.bat run > press Enter.
3. Wait for the server to startup.
4. Access http://localhost:[port]/OpenKM.
5. Use netstat -ano | findstr [port] to make sure the service is runnning.
6. User should be able to see OpenKM login page when trying to access the browser.

OpenKM DMS Form Options Binder

OpenKM DMS File Upload Properties

More details on default configurations for file upload: File Upload - Knowledge Base for DX 8 - Joget | COMMUNITY

Below are configurations for section "OpenKM Configurations":

OpenKM DMS Datalist Formatter

Related Links

• File Upload Documentation: https://dev.joget.org/community/display/DX8/File+Upload
• OpenKM Download Website: https://www.openkm.com/en/download.html
• Refer to https://www.openkm.com/wiki/index.php/RESTful_Guide if you wish to learn more about OpenKM' RESTful API.
• Refer to https://dev.joget.org/community/display/DX7/Environment+Variable to know more about Environment Variable.