Enumerations of the Megaladata Built-in Entities

The enumerations describing the fields and variables metadata is built in within the JavaScript execution context.

Description of Enumerations

DataType

It represents data types. Enumeration items:

Item	Data type
None	No data type specified
Boolean	Logical
DateTime	Date/time
Float	Real
Integer	Integer
String	String
Variant	Variant

DataKind

It represents data kinds. Enumeration items:

Item	Data kind
Undefined	No data kind defined
Continuous	Continuous
Discrete	Discrete

UsageType

It represents usage type of fields. Enumeration items:

Item	Field usage type
Unspecified	No usage type specified
Excluded	Excluded
Useless	Useless
Active	Active
Predicted	Predicted
Key	Key
Group	Group
Value	Value
Transaction	Transaction
Item	Item

Examples of use:

import { OutputTable, DataType, UsageType } from "builtIn/Data";

let col0 = OutputTable.Columns[0];
// Assertion of the property value with the "enumeration" type
if (col0.DataType == DataType.String) {
    // We are doing something
}

// Displaying of the numeric representation of the enumeration value
console.log(col0.DefaultUsageType);
// Displaying of the string representation of the enumeration value
console.log(UsageType[col0.DefaultUsageType]);