Patterns - OAV Pattern
Introduction
It's an implementation of the
OAV Pattern .
For a specific Transaction, this Pattern generates two new Transactions to define and store information at runtime without changing the DB.
OAV Pattern Instance
It is the
Instance File of the pattern (XML file) associated to the TRN.
The file .OAV is an XML file that can be visualized in TreeView format and modified according to the user requirements. Its main properties are mentioned below.
Transaction
It indicates the TRN you are working with.
Definition
It defines the transaction that defines the attributes to be stored for objects.
| UseCategory | Used to order the attributes when many attributes are expected |
Values
It defines the transaction that will store the values for these object's attributes.
Editor
It defines the Web Panel used to edit the values, by default is a Web Component.
Helper Objects
Procedures used to read/write the values of an object's attributes to/from the database.