What is it for?
- Joget Workflow provided Bean Shell implementation as several Plugin Types. Please refer to usages section.
- BeanShell is a small, embeddable Java source interpreter with object scripting language features written in Java.
- BeanShell dynamically executes standard Java syntax in runtime.
- By using BeanShell Plugin, you can type in valid Java codes in plugin configuration and the statements will be executed when the plugin is triggered.
- No compilation cycle is needed.
What is the code syntax?
- Java syntax supported by the version of JDK used
- Usage of all libraries that Joget used. For details please refer to NOTICE.txt in the release installer/bundle.
- Usage of all Joget Workflow Utility and Service Methods.
- Usage of Hash Variable.
Usages
Use as Form Load Binder
Injected Variables:
element - Element that this binder is tie to. (org.joget.apps.form.model.Element)
primaryKey - The primary key provided by the element to load data. (java.lang.String)
formData - The data holder of the whole form. (org.joget.apps.form.model.FormData)
Expected Return Object:
- An org.joget.apps.form.model.FormRowSet object which contains one org.joget.apps.form.model.FormRow object.
Samples:
Load user data using jdbc.
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.sql.DataSource;
import org.joget.apps.app.service.AppUtil;
import org.joget.apps.form.model.Element;
import org.joget.apps.form.model.FormData;
import org.joget.apps.form.model.FormRow;
import org.joget.apps.form.model.FormRowSet;
import org.joget.commons.util.LogUtil;
public FormRowSet load(Element element, String username, FormData formData) {
FormRowSet rows = new FormRowSet();
if (username != null && !username.isEmpty()) {
Connection con = null;
try {
// retrieve connection from the default datasource
DataSource ds = (DataSource)AppUtil.getApplicationContext().getBean("setupDataSource");
con = ds.getConnection();
// execute SQL query
if(!con.isClosed()) {
PreparedStatement stmt = con.prepareStatement("SELECT username, firstName, lastName, email from dir_user where username=?");
stmt.setObject(1, username);
ResultSet rs = stmt.executeQuery();
while (rs.next()) {
FormRow row = new FormRow();
System.out.println(rs.getObject("username") );
row.setProperty("username", (rs.getObject("username") != null)?rs.getObject("username").toString():"");
row.setProperty("firstName", (rs.getObject("firstName") != null)?rs.getObject("firstName").toString():"");
row.setProperty("lastName", (rs.getObject("lastName") != null)?rs.getObject("lastName").toString():"");
row.setProperty("email", (rs.getObject("email") != null)?rs.getObject("email").toString():"");
rows.add(row);
break;
}
}
} catch(Exception e) {
LogUtil.error("Sample app - Form 1", e, "Error loading user data in load binder");
} finally {
//always close the connection after used
try {
if(con != null) {
con.close();
}
} catch(SQLException e) {/* ignored */}
}
}
return rows;
}
//call load method with injected variable
return load(element, primaryKey, formData);
Use as Form Options Binder
Injected Variables:
- element - Element that this binder is tie to. (org.joget.apps.form.model.Element)
- primaryKey - The primary key provided by the element to load data. (java.lang.String)
- formData - The data holder of the whole form. (org.joget.apps.form.model.FormData)
Expected Return Object:
- An org.joget.apps.form.model.FormRowSet object which contains one or more org.joget.apps.form.model.FormRow object. All FormRow objects are expected to have "value" and "label" property.
Samples:
Load time zone as the select box options.
import java.util.Map;
import org.joget.apps.app.service.AppUtil;
import org.joget.apps.form.model.Element;
import org.joget.apps.form.model.FormData;
import org.joget.apps.form.model.FormRow;
import org.joget.apps.form.model.FormRowSet;
import org.joget.apps.form.service.FormUtil;
import org.joget.commons.util.TimeZoneUtil;
public FormRowSet load(Element element, String primaryKey, FormData formData) {
FormRowSet rows = new FormRowSet();
//Get timezones using timezone util
for(Map.Entry entry : TimeZoneUtil.getList().entrySet()){
FormRow option = new FormRow();
option.setProperty(FormUtil.PROPERTY_VALUE, (String) entry.getKey());
option.setProperty(FormUtil.PROPERTY_LABEL, (String) entry.getValue());
rows.add(option);
}
return rows;
}
//call load method with injected variable
return load(element, primaryKey, formData);
Use as Form Ajax Options Binder
Injected Variables:
- values - Dependency values of the controlling field. (java.lang.String[])
Expected Return Object:
- An org.joget.apps.form.model.FormRowSet object which contains one or more org.joget.apps.form.model.FormRow object. All FormRow objects are expected to have "value" and "label" property.
Samples:
Load user as options based on the group id passed by the controlling field.
import java.util.Collection;
import org.joget.apps.app.service.AppUtil;
import org.joget.apps.form.model.Element;
import org.joget.apps.form.model.FormData;
import org.joget.apps.form.model.FormRow;
import org.joget.apps.form.model.FormRowSet;
import org.joget.apps.form.service.FormUtil;
import org.joget.directory.model.User;
import org.joget.directory.model.service.ExtDirectoryManager;
public FormRowSet load(String[] values) {
FormRowSet rows = new FormRowSet();
ExtDirectoryManager directoryManager = (ExtDirectoryManager) AppUtil.getApplicationContext().getBean("directoryManager");
//set groupId based on dependency value
String groupId = null;
if (values != null && values.length > 0) {
groupId = values[0];
}
//Get users using directory manager
Collection userList = directoryManager.getUsers(null, null, null, null, groupId, null, null, "firstName", false, null, null);
for(Object u : userList){
User user = (User) u;
FormRow option = new FormRow();
option.setProperty(FormUtil.PROPERTY_VALUE, user.getUsername());
option.setProperty(FormUtil.PROPERTY_LABEL, user.getFirstName() + " " + user.getLastName());
rows.add(option);
}
return rows;
}
//call load method with injected variable
return load(values);
Use as Form Store Binder
Injected Variables:
- element - Element that this binder is tie to. (org.joget.apps.form.model.Element)
- rows - Data to be store. Contains only one org.joget.apps.form.model.FormRow object. (org.joget.apps.form.model.FormRowSet)
- formData - The data holder of the whole form. (org.joget.apps.form.model.FormData)
Expected Return Object:
- Same org.joget.apps.form.model.FormRowSet object which stored.
Samples:
Do some calculation before storing the data using Workflow Form Binder.
import java.text.DecimalFormat;
import org.joget.apps.app.service.AppUtil;
import org.joget.apps.form.model.Element;
import org.joget.apps.form.model.FormData;
import org.joget.apps.form.model.FormRow;
import org.joget.apps.form.model.FormRowSet;
import org.joget.apps.form.model.FormStoreBinder;
import org.joget.plugin.base.PluginManager;
public FormRowSet store(Element element, FormRowSet rows, FormData formData) {
//check the rows is not empty before store it
if (rows != null && !rows.isEmpty()) {
//Get the submitted data
FormRow row = rows.get(0);
String unitPrice = row.getProperty("unitPrice");
String unit = row.getProperty("unit");
double total = 0;
try {
double price = Double.parseDouble(unitPrice);
int unit = Integer.parseInt(unit);
total = price * unit;
} catch (Exception e) {}
//format the total to 2 decimal
DecimalFormat df = new DecimalFormat("#.00");
row.setProperty("total", df.format(total));
//Reuse Workflow Form Binder to store data
PluginManager pluginManager = (PluginManager) AppUtil.getApplicationContext().getBean("pluginManager");
FormStoreBinder binder = (FormStoreBinder) pluginManager.getPlugin("org.joget.apps.form.lib.WorkflowFormBinder");
binder.store(element, rows, formData);
}
return rows;
}
//call store method with injected variable
return store(element, rows, formData);
Use as Form Validator
Injected Variables:
- element - Element that this validator is tie to. (org.joget.apps.form.model.Element)
- values - The submitted values of the element. (java.lang.String[])
- formData - The data holder of the whole form. (org.joget.apps.form.model.FormData)
Expected Return Object:
- A boolean value to indicate the validation pass or fail.
Samples:
Compare the submitted value with the value of another field.
import java.util.Arrays;
import org.joget.apps.app.service.AppUtil;
import org.joget.apps.form.model.Element;
import org.joget.apps.form.model.Form;
import org.joget.apps.form.model.FormData;
import org.joget.apps.form.service.FormUtil;
public boolean validate(Element element, FormData formData, String[] values) {
boolean result = true;
//get field 1 value from form data object
String field1Id = "field1";
Form form = FormUtil.findRootForm(element);
Element field1 = FormUtil.findElement(field1Id, form, formData);
if (field1 != null) {
//get value of field 1
String[] compareValues = FormUtil.getElementPropertyValues(field1, formData);
//compare the value of field 2 and field 1 are equals
if (!Arrays.equals(values, compareValues)) {
String id = FormUtil.getElementParameterName(element);
formData.addFormError(id, "Value not equal!!!!");
result = false;
}
} else {
//ignore if the field 1 not exist
}
return result;
}
//call validate method with injected variable
return validate(element, formData, values);
Use as Form Multi Row Load Binder
Injected Variables:
- element - Element that this binder is tie to. (org.joget.apps.form.model.Element)
- primaryKey - The primary key provided by the element to load data. (java.lang.String)
- formData - The data holder of the whole form. (org.joget.apps.form.model.FormData)
Expected Return Object:
- An org.joget.apps.form.model.FormRowSet object which contains one or more org.joget.apps.form.model.FormRow object.
Samples:
Load default grid data from another table if current record does not have any grid data.
import org.joget.apps.form.model.Element;
import org.joget.apps.form.model.FormData;
import org.joget.apps.form.model.FormRow;
import org.joget.apps.form.model.FormRowSet;
import org.joget.apps.form.service.FormUtil;
import org.joget.plugin.base.PluginManager;
import org.joget.apps.form.model.FormLoadBinder;
public FormRowSet load(Element element, String primaryKey, FormData formData) {
String defaultFormDefId = "default_grid_entry"; //change this to the form id used to store default grid data
String formDefId = "grid_entry"; //change this to the form id used to store grid data
String foreignKey = "fk"; //change this to the foreign key
FormRowSet f = new FormRowSet();
f.setMultiRow(true);
// Reuse Multi Row Binder to load data
PluginManager pluginManager = (PluginManager) FormUtil.getApplicationContext().getBean("pluginManager");
FormLoadBinder binder = (FormLoadBinder) pluginManager.getPlugin("org.joget.plugin.enterprise.MultirowFormBinder");
//Load from the grid table
binder.setProperty("formDefId", formDefId);
binder.setProperty("foreignKey", foreignKey);
f = binder.load(element, primaryKey, formData);
//if no grid data is retrieved, get from default table
if (f == null || f.isEmpty()) {
binder.setProperty("formDefId", defaultFormDefId);
//set the foreign key value to empty
f = binder.load(element, "", formData);
}
return f;
}
//call load method with injected variable
return load(element, primaryKey, formData);
Use as Form Multi Row Store Binder
Injected Variables:
- element - Element that this binder is tie to. (org.joget.apps.form.model.Element)
- rows - Data to be store. Contains one or more org.joget.apps.form.model.FormRow object. (org.joget.apps.form.model.FormRowSet)
- formData - The data holder of the whole form. (org.joget.apps.form.model.FormData)
Expected Return Object:
- Same org.joget.apps.form.model.FormRowSet object which stored.
Samples:
Bulk create users based on the grid data.
import java.util.HashSet;
import java.util.Set;
import org.joget.apps.app.service.AppUtil;
import org.joget.apps.form.model.Element;
import org.joget.apps.form.model.FormData;
import org.joget.apps.form.model.FormRow;
import org.joget.apps.form.model.FormRowSet;
import org.joget.commons.util.LogUtil;
import org.joget.commons.util.StringUtil;
import org.joget.directory.model.Role;
import org.joget.directory.model.User;
import org.joget.directory.dao.RoleDao;
import org.joget.directory.dao.UserDao;
import org.joget.directory.model.service.DirectoryUtil;
import org.joget.directory.model.service.UserSecurity;
public FormRowSet store(Element element, FormRowSet rows, FormData formData) {
try {
UserSecurity us = DirectoryUtil.getUserSecurity();
RoleDao roleDao = (RoleDao) AppUtil.getApplicationContext().getBean("roleDao");
UserDao userDao = (UserDao) AppUtil.getApplicationContext().getBean("userDao");
for (FormRow row : rows) {
//Get the submitted data for each grid row
String username = row.getProperty("username");
String firstName = row.getProperty("firstName");
String lastName = row.getProperty("lastName");
String email = row.getProperty("email");
String password = row.getProperty("password");
User user = new User();
user.setId(username);
user.setUsername(username);
user.setTimeZone("0");
user.setActive(1);
user.setFirstName(firstName);
user.setLastName(lastName);
user.setEmail(email);
//Check if there is user security implementation, using it to encrypt password
if (us != null) {
user.setPassword(us.encryptPassword(username, password));
} else {
user.setPassword(StringUtil.md5Base16(password));
}
user.setConfirmPassword(password);
//set user role
Set roleSet = new HashSet();
roleSet.add(roleDao.getRole("ROLE_USER"));
user.setRoles(roleSet);
userDao.addUser(user);
if (us != null) {
us.insertUserPostProcessing(user);
}
}
} catch (Exception e) {
LogUtil.error("Sample app - Bulk Create Users form", e, "Store user error!!");
}
return rows;
}
//call store method with injected variable
return store(element, rows, formData);
Use as Form Multi Row Validator
Injected Variables:
- element - Element that this validator is tie to. (org.joget.apps.form.model.Element)
- rows - Submitted data. Contains one or more org.joget.apps.form.model.FormRow object. (org.joget.apps.form.model.FormRowSet)
- formData - The data holder of the whole form. (org.joget.apps.form.model.FormData)
Expected Return Object:
- A boolean value to indicate the validation pass or fail.
Samples:
Validate the sum of a column values are less than 1000.
import java.util.Arrays;
import org.joget.apps.app.service.AppUtil;
import org.joget.apps.form.model.Element;
import org.joget.apps.form.model.Form;
import org.joget.apps.form.model.FormData;
import org.joget.apps.form.model.FormRow;
import org.joget.apps.form.model.FormRowSet;
import org.joget.apps.form.service.FormUtil;
public boolean validate(Element element, FormRowSet rows, FormData formData) {
boolean result = true;
if (rows != null && !rows.isEmpty()) {
int total = 0;
//Sum the values from column "amount"
for (FormRow row : rows) {
try {
int amount = Integer.parseInt(row.getProperty("amount"));
total += amount;
} catch (Exception e) {}
}
//if amount larger than 1000
if (total > 1000) {
String id = FormUtil.getElementParameterName(element);
formData.addFormError(id, "Total amount should not larger than 1000!!!!");
result = false;
}
}
return result;
}
//call validate method with injected variable
return validate(element, rows, formData);
Use as Form Permission
Injected Variables:
- user - User object of current logged in user (org.joget.directory.model.User)
- requestParams - Request parameters map of current HTTP Request (java.util.Map)
Expected Return Object:
- A boolean value to indicate the user is authorized.
Samples:
Check the current user's username are same with the form field "creator" value. The following sample using Form Hash Variable to retrieve form field value.
import java.util.Map;
import org.joget.directory.model.User;
public boolean isAuthorized(User user, Map params) {
//using hash variable to get "creator" field value and escapes it with java syntax, then compare with current username
return "#form.crm_account.creator?java#".equals(user.getUsername());
}
//call isAuthorized method with injected variable
return isAuthorized(user, requestParams);
Use as Form Post Submission Processing Tool
Injected Variables:
- workflowAssignment - The workflow activity assignment object of the saving form. Null when the form is not an assignment form. (org.joget.workflow.model.WorkflowAssignment)
- pluginManager - Plugin Manager service bean for convenient usage. (org.joget.plugin.base.PluginManager)
- appDef - App definition of the process. (org.joget.apps.app.model.AppDefinition)
- request - Http Request object of current Http Request. (javax.servlet.http.HttpServletRequest)
Expected Return Object:
- None
Samples:
Reuse Email tool to send separate email to each users. The following script is for a form not mapped to workflow assignment, therefore workflowAssignment is not available.
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import org.joget.apps.app.model.AppDefinition;
import org.joget.apps.app.service.AppPluginUtil;
import org.joget.apps.app.service.AppUtil;
import org.joget.plugin.base.ApplicationPlugin;
import org.joget.plugin.base.Plugin;
import org.joget.plugin.base.PluginManager;
import org.joget.plugin.property.model.PropertyEditable;
public Object execute(AppDefinition appDef, HttpServletRequest request) {
String[] emails = new String[]{"test1@joget.org", "test2@joget.org"};
//Reuse Email Tool to send separated email to a list of users;
Plugin plugin = pluginManager.getPlugin("org.joget.apps.app.lib.EmailTool");
//Get default properties (SMTP setting) for email tool
Map propertiesMap = AppPluginUtil.getDefaultProperties(plugin, null, appDef, null);
propertiesMap.put("pluginManager", pluginManager);
propertiesMap.put("appDef", appDef);
propertiesMap.put("request", request);
ApplicationPlugin emailTool = (ApplicationPlugin) plugin;
//send email
for (String email : emails) {
propertiesMap.put("toSpecific", email);
propertiesMap.put("subject", "This is a test email for " + email);
propertiesMap.put("message", "Email content for " + email);
//set properties and execute the tool
((PropertyEditable) emailTool).setProperties(propertiesMap);
emailTool.execute(propertiesMap);
}
return null;
}
//call execute method with injected variable
return execute(appDef, request);
Use as Process Participant
Injected Variables:
- pluginManager - Plugin Manager service bean for convenient usage. (org.joget.plugin.base.PluginManager)
- workflowActivity - Workflow Activity that trying to retrieves assignee. (org.joget.workflow.model.WorkflowActivity)
Expected Return Object:
- A java.util.Collection of username in java.lang.String to be assign to the Workflow Activity.
Samples:
Randomly assign an user in a department to a workflow activity.
import java.util.ArrayList;
import java.util.Collection;
import org.joget.apps.app.service.AppUtil;
import org.joget.directory.model.User;
import org.joget.directory.model.service.ExtDirectoryManager;
import org.joget.workflow.model.WorkflowActivity;
public Collection getAssignees(WorkflowActivity activity) {
Collection assignees = new ArrayList();
ExtDirectoryManager directoryManager = (ExtDirectoryManager) pluginManager.getBean("directoryManager");
String deptId = "D-005";
//Get total user in department
Long total = directoryManager.getTotalUsers(null, null, deptId, null, null, null, null);
//Get random number from 0 to the total number of users in department
int random = (int) (Math.random() * total);
//Get users using directory manager
Collection userList = directoryManager.getUsers(null, null, deptId, null, null, null, null, "firstName", false, random, 1);
for(Object u : userList){
User user = (User) u;
assignees.add(user.getUsername());
}
return assignees;
}
//call getAssignees method with injected variable
return getAssignees(workflowActivity);
Use as Process Tool
Injected Variables:
- workflowAssignment - The workflow tool activity assignment object. (org.joget.workflow.model.WorkflowAssignment)
- pluginManager - Plugin Manager service bean for convenient usage. (org.joget.plugin.base.PluginManager)
- appDef - App definition of the process. (org.joget.apps.app.model.AppDefinition)
- request - Http Request object of current HTTP Request. Not available if the tool is trigger by Deadline. (javax.servlet.http.HttpServletRequest)
Expected Return Object:
- None
Samples:
Start a new process in the same app with current record id.
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import org.joget.apps.app.model.AppDefinition;
import org.joget.apps.app.service.AppService;
import org.joget.apps.app.service.AppUtil;
import org.joget.workflow.model.service.WorkflowManager;
import org.joget.workflow.model.WorkflowAssignment;
import org.joget.workflow.model.WorkflowProcess;
public Object execute(WorkflowAssignment assignment, AppDefinition appDef, HttpServletRequest request) {
AppService appService = (AppService) AppUtil.getApplicationContext().getBean("appService");
WorkflowManager workflowManager = (WorkflowManager) AppUtil.getApplicationContext().getBean("workflowManager");
//get current record id
String recordId = appService.getOriginProcessId(assignment.getProcessId());
//get process
WorkflowProcess process = appService.getWorkflowProcessForApp(appDef.getAppId(), appDef.getVersion().toString(), "process2");
//start process
workflowManager.processStart(process.getId(), null, null, null, recordId, false);
return null;
}
//call execute method with injected variable
return execute(workflowAssignment, appDef, request);
Update Form Field Value
import org.joget.apps.app.model.AppDefinition;
import org.joget.apps.app.service.AppService;
import org.joget.apps.app.service.AppUtil;
import org.joget.apps.form.model.FormRow;
import org.joget.apps.form.model.FormRowSet;
import org.joget.workflow.model.WorkflowAssignment;
String formDefId = "hr_expense_new";
String fieldId = "status";
String fieldValue = "Submitted";
//Get record Id from process
AppService appService = (AppService) AppUtil.getApplicationContext().getBean("appService");
String id = appService.getOriginProcessId(workflowAssignment.getProcessId());
//retrieve data
FormRow row = new FormRow();
FormRowSet rowSet = appService.loadFormData(appDef.getAppId(), appDef.getVersion().toString(), formDefId, id);
if (!rowSet.isEmpty()) {
row = rowSet.get(0);
//update field value
row.setProperty(fieldId, fieldValue);
}
//Store the updated data
rowSet.set(0, row);
appService.storeFormData(appDef.getAppId(), appDef.getVersion().toString(), formDefId, rowSet, id);
Start a new process instance for each row of data loaded using foreign key and value
import org.joget.apps.form.model.FormRow;
import org.joget.apps.form.model.FormRowSet;
import org.joget.apps.app.service.AppUtil;
import org.joget.plugin.base.PluginManager;
import org.joget.apps.form.model.FormLoadBinder;
import org.joget.workflow.model.service.WorkflowManager;
String formDefId = "ExpensesClaimEntry"; //change this to the form id used to load grid data
String foreignKey = "claim"; //change this to the foreign key field id
// Reuse Multi Row Binder to load data
PluginManager pluginManager = (PluginManager) AppUtil.getApplicationContext().getBean("pluginManager");
WorkflowManager workflowManager = (WorkflowManager) AppUtil.getApplicationContext().getBean("workflowManager");
FormLoadBinder binder = (FormLoadBinder) pluginManager.getPlugin("org.joget.plugin.enterprise.MultirowFormBinder");
//Load from the grid table
binder.setProperty("formDefId", formDefId);
binder.setProperty("foreignKey", foreignKey);
FormRowSet rows;
rows = binder.load(null, "#assignment.processId#", null);
//loop through records returned
for (FormRow row : rows) {
try {
Map variableMap = new HashMap();
variableMap.put("status", row.getProperty("purpose"));
//start a new process instance with data from each row
//processStart(String processDefId, String processId, Map<String, String> variables, String startProcUsername, String parentProcessId, boolean startManually)
workflowManager.processStart("expenseclaim:latest:process1", null, variableMap, null, row.getProperty("id"), false);
} catch (Exception e) {}
}
Use as Userview Permission
Injected Variables:
- user - User object of current logged in user (org.joget.directory.model.User)
- requestParams - Request parameters map of current HTTP Request (java.util.Map)
Expected Return Object:
- A boolean value to indicate the user is authorized.
Samples:
Check the user is in a group and is an admin user.
import java.util.Collection;
import java.util.Map;
import org.joget.apps.app.service.AppUtil;
import org.joget.directory.model.Group;
import org.joget.directory.model.User;
import org.joget.directory.model.service.ExtDirectoryManager;
import org.joget.workflow.model.service.WorkflowUserManager;
import org.joget.workflow.util.WorkflowUtil;
public boolean isAuthorized(User user, Map params) {
//if no logged in user
if (user == null) {
return false;
}
//check current user is admin
boolean isAdmin = WorkflowUtil.isCurrentUserInRole(WorkflowUserManager.ROLE_ADMIN);
//check current user is in group "G-001"
boolean inGroup = false;
ExtDirectoryManager directoryManager = (ExtDirectoryManager) AppUtil.getApplicationContext().getBean("directoryManager");
Collection groups = directoryManager.getGroupByUsername(user.getUsername());
if (groups != null) {
String groupId = "G-001";
for (Group g : groups) {
if (groupId.equals(g.getId())) {
inGroup = true;
}
}
}
return isAdmin && inGroup;
}
//call isAuthorized method with injected variable
return isAuthorized(user, requestParams);
Best Practices
1. Only import classes that are needed
Do not use wildcard in import statement. It giving a very bad performance in Bean Shell interpreter to search the whole package and loads it in memory.
Don't:
import java.util.*;
Do:
import java.util.Collection;
2. Do not need to mention the type of element of a collections
Bean Shell interpreter cannot recognise the element type syntax of collections class like Collection, Map, List, Set and etc.
Don't:
Map<String, String> map = new HashMap<String, String>();
Do:
Map map = new HashMap();
3. Indents your script nicely and follows the Java Code Conventions
It will make yours and others life easier to maintain and review the script whenever necessary as Joget Workflow provided flexibility to adapt change quickly.
4. Write your script in functions
If your script is pretty long and some parts of the script are reusable, please make use of function to write your script. It provided better reading and performance.
5. Remember to write some comments
It will helps you and others to understand what is the purpose for the script quickly.
6. Catch the exceptions and give a meaningful message in log.
If you are using a lot of Bean Shell Scripting in your app, a meaningful log message can help you to locate your issue quickly.
Don't
try {
//do something
} catch (Exception e) {
LogUtil.error("BeanShell", e, "Error executing script");
}
Do:
try {
//do something
} catch (Exception e) {
LogUtil.error("CRM app - Backend userview", e, "Error retrieving user department in Report category permission");
}
7. Consider to make it as a plugin instead of using Bean Shell
If your script need to reuse for multiple times in an app or can be used by others app in future development, please consider to make your Bean Shell script as a plugin instead of copy and paste it multiple times across your app. Bean Shell script is harder to maintain in this case. Imagine that you want to make a change, you will have to update all the places that are using the same script as well. Beside that, a normal plugin implementation will have better performance than a script running by a Bean Shell interpreter.
8. Reuse existing plugins in your code to make it cleaner and easy to maintain
If partial of your script can be done by existing plugins in Joget Workflow, you can reuse the plugin in stead of writting it again.
To reuse a plugin, you can retrieve the plugin using PluginManager, then set it properties and execute it.
Example:
9. How to use 3rd party libraries in Bean Shell
In your webserver, you can add the jar file to your WEB-INF/lib folder and restart the server. Then, you should be able to "import" and use them in your bean shell java code.