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| In Bean Shell plugin, we can call other Joget plugins programmatically to perform specific task without the need to rewrite specific functionality that existing plugins may have already addressed. |
Example 1: JSON Tool
In this Bean Shell code, we will make use of JSON Tool.
Before we move on, let's inspect how the plugin is configured first.
Figure 1: Configure JSON Tool
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One quick way to learn the attributes needed is to make use of the browser's Developer Tools > Network to observe the submission made when we hit the submit button.
Figure 2: JSON Tool Attributes
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We can also check out the plugin property options source code of the plugin too at https://github.com/jogetworkflow/jw-community/blob/7.0-SNAPSHOT/wflow-core/src/main/resources/properties/app/jsonTool.json or by inspecting the DOM elements in the JSON Tool configuration screen.
Figure 3: Obtaining JSON Tool Attrbutes
With this infomation on hand, we can now configure the plugin through coding. Configurations are made in the propertiesMap variable in the sample code below.
Sample code:
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import java.util.Map;
import java.util.HashMap;
import javax.servlet.http.HttpServletRequest;
import org.joget.apps.app.service.AppUtil;
import org.joget.plugin.base.Plugin;
import org.joget.plugin.base.PluginManager;
import org.joget.workflow.util.WorkflowUtil;
import org.joget.apps.app.model.AppDefinition;
import org.joget.apps.app.service.AppPluginUtil;
import org.joget.plugin.property.model.PropertyEditable;
import org.joget.workflow.model.service.WorkflowManager;
import org.joget.workflow.model.WorkflowProcess;
import org.joget.apps.app.service.AppUtil;
import org.joget.workflow.model.WorkflowProcessLink;
import org.joget.workflow.model.WorkflowProcessResult;
import org.joget.workflow.model.WorkflowActivity;
import org.joget.workflow.model.WorkflowVariable;
import org.joget.commons.util.LogUtil;
import org.joget.apps.app.lib.JsonTool;
public void callPlugin(){
try {
PluginManager pluginManager = (PluginManager) AppUtil.getApplicationContext().getBean("pluginManager");
//plugin to call
String pluginName = "org.joget.apps.app.lib.JsonTool";
Plugin plugin = pluginManager.getPlugin(pluginName);
AppDefinition appDef = AppUtil.getCurrentAppDefinition();
//JSON API to call to start a new process
String jsonURL = "http://localhost:8080/jw/web/json/workflow/process/start/expenseclaim:latest:process1";
//prepare workflow variables for the process
List params = new ArrayList();
Map param = new HashMap();
param.put("name", "var_approval");
param.put("value", "New");
params.add(param);
param = new HashMap();
param.put("name", "var_SelectApprover");
param.put("value", "clark");
params.add(param);
Object[] paramsArray = params.toArray();
//prepare propertiesMap mapped specifically for JSON tool
Map propertiesMap = new HashMap();
propertiesMap.put("jsonUrl", jsonURL);
propertiesMap.put("requestType", "post");
propertiesMap.put("debugMode", "true");
propertiesMap.put("headers", new Object[]{});
//propertiesMap.put("params", new Object[]{ params });
propertiesMap.put("params", paramsArray );
//obtain default properties set, if any
propertiesMap = AppPluginUtil.getDefaultProperties(plugin, propertiesMap, appDef, null);
//set properties into the JSON tool programmatically
if (plugin instanceof PropertyEditable) {
((PropertyEditable) plugin).setProperties(propertiesMap);
LogUtil.info("migrateProcess", "set properties");
}
//invoke the JSON plugin
plugin.execute(propertiesMap);
LogUtil.info("callPlugin", "execution finished");
} catch (Exception ex) {
LogUtil.error("callPlugin", ex, "Error");
}
}
callPlugin();
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