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New General Hierarchical Data Source Dialog Box

You can use the New General Hierarchical Data Source dialog box to add a general HDS in the current catalog. This topic describes the options in the dialog box.

Designer displays the New General Hierarchical Data Source dialog box when you right-click a data source node and select New General Hierarchical Data Source from the shortcut menu the Catalog Manager.

You see the following options in the dialog box:

Class Name

Specify the name of the entrance class that implements the HDS APIs. The class should be in the class path in the system environment. Select the Browse button to specify the class.

Parameter

Specify the parameter string that is required by the class, if any. The parameter string must match the format defined in the HDS class.

Structure

The box shows the structure of the hierarchical data source.

Columns

You can specify the column settings in this box.

• Element
  The column shows the names of the columns in the selected node of table.
• Selected
  Specify whether to import the column into the catalog.
• Format
  Specify the format in which to display the column values in the report result. It varies for different data types, and you can manually define the format.
• Type
  Specify the data type of the column.
• Precision
  Specify the precision of the column's values. The default value comes from data source metadata and it specifies the column's largest number of digits. The larger the precision is, the more memory it might take; however, the more accurate values you will get.
• Scale
  Specify the number of digits to the right of the decimal point for the column's values.
• Nullable
  Specify whether the column is nullable. You have three options to choose: Nullable, No Nulls, and Nullable Unknown.
• Currency
  Specify whether to use the Currency type for this column or not
• Array
  Specify whether to use the Array type for this column or not.

Load Tree

Select to parse and load data tree from the external data source file. Designer displays the structure in the Structure box after you select this button.

OK

Select to apply all changes and close the dialog box.

Cancel

Select to close the dialog box without saving any changes.

Help

Select to view information about the dialog box.

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