A DataBridge task consists of a source, a destination and a mapping. The properties for each of these come from a properties file DataBridge reads when it starts. In particular, the properties file specifies which Bridge drivers to use for each of the three modules. The various module drivers determine what additional properties are required for the task.
When DataBridge starts, it requires two command line parameters:
The first specifies the name of the task to perform; the second specifies the filename of the properties file.
The task name parameter may be a “-” (hyphen). This signals that the taskname is specified by the Default property in the properties file.
The properties filename, of course, must be of a valid DataBridge AppProperties file. Further, the file must contain the required properties for the named task. It must also, when the command line task name is “-”, contain the Default property.