Setting the bind type and values for retrieval arguments

If the Web DataWindow object has one or more retrieval arguments, then the Retrieval tab page displays the names of the retrieval arguments defined for the Web DataWindow object. You can specify retrieval argument bind type and bind values for the Web DataWindow DTC.

Shown is the Retrieval tab page of the Web DataWindow DTC dialog box. At top is a selected and grayed check box for Automatic Retrieval, then a blank area labeled Retrieval Arguments with columns for Argument Name, Bind Type, and Bind Value.

Specifying the bind type

The bind type is the type of data that will be passed to the Web DataWindow. The Bind Type column has a drop-down list box that allows you to specify how the Web DataWindow DTC will get a value for each retrieval argument:

Control For 4GL JSP pages only, the value property of a server object.
Constant A fixed value.
JavaScript Expression For ASP pages only, the value of an expression set on the server.
Page Parameter For JSP pages only, a parameter whose value is set on the server, either as a value passed from one page to another or as a default value set for the page if no value is passed.

If you type in a parameter name for a 4GL Web page If you type in a parameter name for a 4GL Web page (instead of selecting it from the drop-down list box), make sure to add the parameter to the list on the Parameters tab of the Page Properties dialog box.
Page Variable A variable whose value is set on the server. This selection is available only on 4GL JSP pages.

Specifying bind values

Bind values are the data values that will be passed to the DataWindow as retrieval arguments. The value you specify depends on the option you select in the Bind Type drop-down list box. Available page parameters, page variables, and control values automatically populate the Bind Value list when you select these types in Bind Type.

For more information about binding data to retrieval arguments, see “Binding data to DataWindow retrieval arguments”.