Datasets have the following fields:
- Description: The description of the dataset, this is only relevant as documentation.
- OQL query: The OQL query which defines the dataset.
- Java action: The interface of the Java action which returns a dataset. The columns and data types of the columns needs to be specified in the modeler. Based on this specification the modeler will create a template for this action.
The following shows an example OQL query that calculates the aggregated total amount for all orders of a customer for a specific group of customers:
FROM CRM.Customers As CustomerObj INNER JOIN CustomerObj/CRM.Orders_Customer/CRM.Orders As OrderObj WHERE CustomerObj/CRM.Customer_Group = $ParGroup GROUP BY CustomerObj/Name SELECT CustomerObj/Name As Name, SUM(OrderObj/TotalAmount) As TotalAmount
A dataset can have multiple parameters. Parameters are used to filter / manipulate datasets. Security on datasets is configured based on the parameters. In a Java action the parameters are used in the generated template.
In OQL parameters can be called using a $ symbol, for example: $Month.
A parameter has the following configurable properties:
- Name: The name of the parameter
- Type: The type of the parameter: Object, Enumeration or a primitive (for example, DateTime, Float, Integer, Boolean, etc). See Data Types for the possible parameter types.
- Constraints: The constraints on a parameter. These constraints influence which values can be selected for parameter input values by the end user. Constraints can be associated with user roles in the dataset security. There are two type of constraints: ranges which apply to numeric and date parameters and XPath constraints which apply to object parameters.
When a parameter is defined as a range the drop-down box in the report shows each range instead of all values within the ranges. Currency (deprecated), float (deprecated) and decimal parameters are always ranges.