adding an additional import format for a CDB domain

define import spreadsheet columns and create test spreadsheet

Cable Catalog Item	Connector Name	Description	                Connector Type	Is Male
91795	                S-F-1	        female safeconn connector	#SAFECONN	FALSE

create ImportHelperBase subclass to handle

• subclass extends ImportHelperBase (or a class derived from it) and specifies type parameters for the domain object the import process will create and the controller to use for creating them, e.g.,

public class ImportHelperCableCatalogConnectors extends ImportHelperBase<ItemConnector, ItemConnectorController> {
<snip>

• override getEntityController() e.g.,

    @Override
    public ItemConnectorController getEntityController() {
        return ItemConnectorController.getInstance();
    }

• override getFilenameBase() e.g.,

    @Override
    public String getFilenameBase() {
        return "Cable Catalog Connectors";
    }

• override getColumnSpecs() with a column spec for each column of the import spreadsheet format e.g.,

    @Override
    protected List<ColumnSpec> getColumnSpecs() {
        
        List<ColumnSpec> specs = new ArrayList<>();
        
        specs.add(new IdOrNameRefColumnSpec(
                "Cable Catalog Item", 
                KEY_PARENT_ITEM, 
                "", 
                "ID or name of parent cable catalog item. Name must be unique and prefixed with '#'.", 
                null,
                ColumnModeOptions.rCREATE(), 
                ItemDomainCableCatalogController.getInstance(), 
                Item.class, 
                null));   
        
        specs.add(new StringColumnSpec(
                "Connector Name", 
                "connectorName", 
                "setConnectorName", 
                "Name for cable connector.", 
                null,
                ColumnModeOptions.rCREATE(), 
                128));
        
        specs.add(new StringColumnSpec(
                "Description", 
                "connectorDescription", 
                "setConnectorDescription", 
                "Connector description.", 
                null,
                ColumnModeOptions.rCREATE(), 
                128));
        
        specs.add(new IdOrNameRefColumnSpec(
                "Connector Type", 
                "connectorType", 
                "setConnectorType", 
                "ID or name of connector type. Name must be unique and prefixed with '#'.", 
                null,
                ColumnModeOptions.rCREATE(), 
                ConnectorTypeController.getInstance(), 
                Item.class, 
                null));   
        
        specs.add(new BooleanColumnSpec(
                "Is Male", 
                "connectorGender", 
                "setConnectorGender", 
                "True/yes/1 if connector gender is male.", 
                null,
                ColumnModeOptions.oCREATE()));
        
        return specs;
    }

add entry for new helper subclass to domain import info in controller