In this tutorial, we will following the guideline of developing a plugin to develop our Multi Store Binder plugin. Please also refer to the very first tutorial How to develop a Bean Shell Hash Variable and also the following store binder related plugin for more details steps.
1. What is the problem?
We would like to run multiple store binders plugins in a single store binder selection.
2. What is your idea to solve the problem?
Joget Workflow has provided a plugin type called Form Store Binder Plugin. We will develop one to support multiple selections of store binders to store form data.
3. What is the input needed for your plugin?
To develop a Multi Store binder, we will need a multi-selector in a grid form and a text editor for additional notes for app designers.
Binders: Displays a list of store binders available.
Comments: Additional notes users might wish to add.
4. What is the output and expected outcome of your plugin?
All submitted data will store accordingly based on the multiple selections of store binders.
5. Is there any resources/API that can be reuse?
We can refer to the implementation of other available Form Store Binder plugins. We can also refer to how Multi Tools plugin for the design:
6. Prepare your development environment
We need to always have our Joget Workflow Source Code ready and built by following this guideline.
The following of this tutorial is prepared with Joget Source Code version 7.0.0. Please refer to Guideline for developing a plugin for other platform commands.
Let said our folder directory as following.
- Home
- joget
- plugins
- jw-community
-7.0.0
The "plugins" directory is the folder we will create and store all our plugins and the "jw-community" directory is where the Joget Workflow Source code stored.
Run the following command to create a maven project in the "plugins" directory.
cd joget/plugins/ ~/joget/jw-community/5.0.0/wflow-plugin-archetype/create-plugin.sh org.joget.tutorial multi_store_binder 5.0.0
Then, the shell script will ask us to key in a version for your plugin and ask us for confirmation before generate the maven project.
Define value for property 'version': 1.0-SNAPSHOT: : 7.0.0 [INFO] Using property: package = org.joget.tutorial Confirm properties configuration: groupId: org.joget.tutorial artifactId: multi_store_binder version: 7.0.0 package: org.joget.tutorial Y: : y
We should get the "BUILD SUCCESS" message shown in our terminal and a "multi_store_binder" folder created in the "plugins" folder.
Open the maven project with your favor IDE. I will be using NetBeans.
7. Just code it!
a. Extending the abstract class of a plugin type
Create a "MultiStoreBinder" class under "org.joget.tutorial" package. Then, extend the class with org.joget.apps.form.model.FormBinder abstract class.
To make it work as a Form Store Binder, we will need to implement org.joget.apps.form.model.FormStoreBinder interface. Then, we need to implement org.joget.apps.form.model.FormStoreElementBinder interface to make this plugin show as a selection in store binder select box and implement org.joget.apps.form.model.FormStoreMultiRowElementBinder interface to list it under the store binder select box of grid element.
Please refer to Form Store Binder Plugin.
b. Implement all the abstract methods
As usual, we have to implement all the abstract methods. We will be using the AppPluginUtil.getMessage method to support i18n and using the constant variable MESSAGE_PATH for the message resource bundle directory.
Then, we have to do a UI for admin user to provide inputs for our plugin. In getPropertyOptions method, we already specify our Plugin Properties Options definition file is located at "/properties/multiStoreBinder.json". Let us create a directory "resources/properties" under "multi_store_binder/src/main" directory. After creating the directory, create a file named "multiStoreBinder.json" in the "properties" folder.
In the properties definition options file, we will need to provide options as below. Please note that we can use "@@message.key@@" syntax to support i18n in our properties options.
[
{
"title" : "@@plugin.multistorebinder.config@@",
"properties" : [
{
"name" : "binders",
"label" : "@@plugin.multistorebinder.storeBinder@@",
"type" : "elementmultiselect",
"options_ajax" : "[CONTEXT_PATH]/web/property/json/getElements?classname=org.joget.apps.form.model.FormStoreBinder&exclude=org.joget.sample.MultiStoreBinder",
"url" : "[CONTEXT_PATH]/web/property/json[APP_PATH]/getPropertyOptions",
"default_property_values_url" : "[CONTEXT_PATH]/web/property/json[APP_PATH]/getDefaultProperties",
"required" : "true"
},{
"name" : "comment",
"label" : "@@plugin.multistorebinder.comment@@",
"type" : "codeeditor"
}
]
}
]
Same as JDBC Options Binder, we will need to add a test connection button for custom JDBC setting. Please refer to How to develop a JDBC Options Binder on the Web Service Plugin implementation.
Once we are done with the properties option to collect input and the web service to test the connection, we can work on the main method of the plugin which is store method.
public FormRowSet store(Element element, FormRowSet rows, FormData formData) {
Form parentForm = FormUtil.findRootForm(element);
String primaryKeyValue = parentForm.getPrimaryKeyValue(formData);
Connection con = null;
PreparedStatement pstmt = null;
ResultSet rs = null;
try {
DataSource ds = createDataSource();
con = ds.getConnection();
//check for deletion
FormRowSet originalRowSet = formData.getLoadBinderData(element);
if (originalRowSet != null && !originalRowSet.isEmpty()) {
for (FormRow r : originalRowSet) {
if (!rows.contains(r)) {
String query = getPropertyString("delete_sql");
pstmt = con.prepareStatement(getQuery(query));
int i = 1;
for (String obj : getParams(query, r, primaryKeyValue)) {
pstmt.setObject(i, obj);
i++;
}
pstmt.executeUpdate();
}
}
}
if (!(rows == null || rows.isEmpty())) {
//run query for each row
for (FormRow row : rows) {
//check to use insert query or update query
String checkSql = getPropertyString("check_sql");
pstmt = con.prepareStatement(getQuery(checkSql));
int i = 1;
for (String obj : getParams(checkSql, row, primaryKeyValue)) {
pstmt.setObject(i, obj);
i++;
}
String query = getPropertyString("insert_sql");
rs = pstmt.executeQuery();
//record exist, use update query
if (rs.next()) {
query = getPropertyString("update_sql");
}
pstmt = con.prepareStatement(getQuery(query));
i = 1;
for (String obj : getParams(query, row, primaryKeyValue)) {
pstmt.setObject(i, obj);
i++;
}
pstmt.executeUpdate();
}
}
} catch (Exception e) {
LogUtil.error(getClassName(), e, "");
} finally {
try {
if (rs != null) {
rs.close();
}
if (pstmt != null) {
pstmt.close();
}
if (con != null) {
con.close();
}
} catch (Exception e) {
LogUtil.error(getClassName(), e, "");
}
}
return rows;
}
/**
* Used to replaces all syntax like {field_id} to question mark
* @param query
* @return
*/
protected String getQuery(String query) {
return query.replaceAll("\\{[a-zA-Z0-9_]+\\}", "?");
}
/**
* Used to retrieves the value of variables in query
* @param query
* @param row
* @return
*/
protected Collection<String> getParams(String query, FormRow row, String primaryKey) {
Collection<String> params = new ArrayList<String>();
Pattern pattern = Pattern.compile("\\{([a-zA-Z0-9_]+)\\}");
Matcher matcher = pattern.matcher(query);
while (matcher.find()) {
String key = matcher.group(1);
if (FormUtil.PROPERTY_ID.equals(key)) {
String value = row.getId();
if (value == null || value.isEmpty()) {
value = UuidGenerator.getInstance().getUuid();
row.setId(value);
}
params.add(value);
} else if ("uuid".equals(key)) {
params.add(UuidGenerator.getInstance().getUuid());
} else if ("foreignKey".equals(key)) {
params.add(primaryKey);
} else {
String value = row.getProperty(key);
params.add((value != null)?value:"");
}
}
return params;
}
/**
* To creates data source based on setting
* @return
* @throws Exception
*/
protected DataSource createDataSource() throws Exception {
DataSource ds = null;
String datasource = getPropertyString("jdbcDatasource");
if ("default".equals(datasource)) {
// use current datasource
ds = (DataSource)AppUtil.getApplicationContext().getBean("setupDataSource");
} else {
// use custom datasource
Properties dsProps = new Properties();
dsProps.put("driverClassName", getPropertyString("jdbcDriver"));
dsProps.put("url", getPropertyString("jdbcUrl"));
dsProps.put("username", getPropertyString("jdbcUser"));
dsProps.put("password", getPropertyString("jdbcPassword"));
ds = BasicDataSourceFactory.createDataSource(dsProps);
}
return ds;
}
c. Manage the dependency libraries of your plugin
Our plugin is using dbcp, javax.servlet.http.HttpServletRequest and javax.servlet.http.HttpServletResponse class, so we will need to add jsp-api and commons-dbcp library to our POM file.
<!-- Change plugin specific dependencies here -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
</dependency>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.3</version>
</dependency>
<!-- End change plugin specific dependencies here -->
d. Make your plugin internationalization (i18n) ready
We are using i18n message key in getLabel and getDescription method. We also used i18n message key in our properties options definition as well. So, we will need to create a message resource bundle properties file for our plugin.
Create directory "resources/messages" under "jdbc_store_binder/src/main" directory. Then, create a "JdbcStoreBinder.properties" file in the folder. In the properties file, let add all the message keys and its label as below.
org.joget.tutorial.JdbcStoreBinder.pluginLabel=JDBC Binder
org.joget.tutorial.JdbcStoreBinder.pluginDesc=Used to store form data using JDBC
form.jdbcStoreBinder.config=Configure JDBC Binder
form.jdbcStoreBinder.datasource=Datasource
form.jdbcStoreBinder.customDatasource=Custom Datasource
form.jdbcStoreBinder.defaultDatasource=Default Datasource
form.jdbcStoreBinder.driver=Custom JDBC Driver
form.jdbcStoreBinder.driver.desc=Eg. com.mysql.jdbc.Driver (MySQL), oracle.jdbc.driver.OracleDriver (Oracle), com.microsoft.sqlserver.jdbc.SQLServerDriver (Microsoft SQL Server)
form.jdbcStoreBinder.url=Custom JDBC URL
form.jdbcStoreBinder.username=Custom JDBC Username
form.jdbcStoreBinder.password=Custom JDBC Password
form.jdbcStoreBinder.check_sql=SQL SELECT Query
form.jdbcStoreBinder.check_sql.desc=Used to decide an insert or update operation. Use syntax like {field_id} in query to inject submitted form data.
form.jdbcStoreBinder.insert_sql=SQL INSERT Query
form.jdbcStoreBinder.insert_sql.desc=Use syntax like {field_id} in query to inject submitted form data.
form.jdbcStoreBinder.update_sql=SQL UPDATE Query
form.jdbcStoreBinder.update_sql.desc=Use syntax like {field_id} in query to inject submitted form data.
form.jdbcStoreBinder.delete_sql=SQL DELETE Query
form.jdbcStoreBinder.delete_sql.desc=Used to delete deleted form data in Grid element. Use syntax like {id} in query to inject form data primary key.
form.jdbcStoreBinder.testConnection=Test Connection
form.jdbcStoreBinder.connectionOk=Database connected
form.jdbcStoreBinder.connectionFail=Not able to establish connection.
e. Register your plugin to Felix Framework
We will have to register our plugin class in Activator class (Auto generated in the same class package) to tell Felix Framework that this is a plugin.
public void start(BundleContext context) {
registrationList = new ArrayList<ServiceRegistration>();
//Register plugin here
registrationList.add(context.registerService(JdbcStoreBinder.class.getName(), new JdbcStoreBinder(), null));
}
f. Build it and testing
Let build our plugin. Once the building process is done, we will found a "jdbc_store_binder-5.0.0.jar" file is created under "jdbc_store_binder/target" directory.
Then, let upload the plugin jar to Manage Plugins. After upload the jar file, double check the plugin is uploaded and activated correctly.
Let create a form to create and update user to dir_user table.
Then, configure the store binder of the form with the following query.
select username from dir_user where username = {id}
insert into dir_user
(id, username, firstName, lastName, email, active)
values
({id}, {id}, {firstName}, {lastName}, {email}, 1)
note: {uuid} can be used to generate a unique id
update dir_user set firstName = {firstName}, lastName = {lastName},
email = {email}
where username = {id}
delete from TABLE_NAME where id = {id}
Now, let test to add a user.
Check the user is created in dir_user table.
Let update the same record by pass the id in URL parameters.
Check the user is updated.
It works! Please remember to test the other features of the plugin as well. 
8. Take a step further, share it or sell it
You can download the source code from jdbc_store_binder_src.zip
To download the ready-to-use plugin jar, please find it in http://marketplace.joget.org/.