Examples with FormHandler org.camunda.bpm.engine.impl.form.handler.FormHandler used on opensource projects

Example 1 with FormHandler

use of org.camunda.bpm.engine.impl.form.handler.FormHandler in project camunda-bpm-platform by camunda.

the class GetFormKeyCmd method execute.

public String execute(CommandContext commandContext) {
    ProcessEngineConfigurationImpl processEngineConfiguration = Context.getProcessEngineConfiguration();
    DeploymentCache deploymentCache = processEngineConfiguration.getDeploymentCache();
    ProcessDefinitionEntity processDefinition = deploymentCache.findDeployedProcessDefinitionById(processDefinitionId);
    for (CommandChecker checker : commandContext.getProcessEngineConfiguration().getCommandCheckers()) {
        checker.checkReadProcessDefinition(processDefinition);
    }
    Expression formKeyExpression = null;
    if (taskDefinitionKey == null) {
        // TODO: Maybe add getFormKey() to FormHandler interface to avoid the following cast
        FormHandler formHandler = processDefinition.getStartFormHandler();
        if (formHandler instanceof DelegateStartFormHandler) {
            DelegateStartFormHandler delegateFormHandler = (DelegateStartFormHandler) formHandler;
            formHandler = delegateFormHandler.getFormHandler();
        }
        // form handler (for a startForm) has always to extend the DefaultStartFormHandler!
        if (formHandler instanceof DefaultStartFormHandler) {
            DefaultStartFormHandler startFormHandler = (DefaultStartFormHandler) formHandler;
            formKeyExpression = startFormHandler.getFormKey();
        }
    } else {
        TaskDefinition taskDefinition = processDefinition.getTaskDefinitions().get(taskDefinitionKey);
        formKeyExpression = taskDefinition.getFormKey();
    }
    String formKey = null;
    if (formKeyExpression != null) {
        formKey = formKeyExpression.getExpressionText();
    }
    return formKey;
}