Content Type
Video
Duration
4m
Level
Introductory
See how InterSystems IRIS® data platform uses member inheritance to generate useful methods from class properties and indexes. Learn how these compiler-generated methods enable validation, direct access to stored values, and index-based object access without additional code.
| Reference | Timestamp | Code |
|---|---|---|
| Persistent class and inherited save method | 0:59 |
Begin code:
Class MyApp.Patient Extends %Persistent Property PatientNumber As %String; Do patient.%Save() End code.
|
| Property definitions using data type classes | 1:15 |
Begin code:
Property Name As %String Property DOB As %Date Property NetWorth As %Integer End code.
|
| Generated property validation method | 1:48 |
Begin code:
Property PatientName As %String(MAXLEN = 310); PatientNameIsValid() End code.
|
| Generated stored value access method | 2:40 | PatientNumberGetStored(id) |
| Generated index access methods | 3:06 |
Begin code:
indexnameOpen() indexnameDelete() indexnameExists() End code.
|
| Index methods using an alternate key value | 3:10 |
Begin code:
PhoneNumberOpen("555-1234")
PhoneNumberDelete("555-1234")
PhoneNumberExists("555-1234")
End code.
|
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