Release 10.1A: OpenEdge Development:
ADM Reference

SmartDataObject

The SmartDataObject is a data pump. It creates and manages a data stream based on the terms of a query that you define within it. You can often avoid complicated JOINs by linking SmartDataObjects together, each managing a single table. If your application runs in a distributed environment, you can update multiple SmartDataObjects on an AppServer by linking them inside a SmartBusinessObject.

The class name of the SmartDataObject is Data, and it inherits from class Query. Both are OpenEdge classes, and the file src/adm2/data.p is Data’s super procedure. Table 1–12 lists the class and custom files related to data.p.

Table 1–12: Custom and class files for SmartDataObjects 

Class files		Custom files
Definition	data.cld	Super	datacustom.p
Method	data.i	Method	datacustom.i
Property	dataprop.i	Property	datapropcustom.i
Prototype	dataprto.i	Prototype	dataprtocustom.i
Template	data.w dyndata.w	Exclude	dataexclcustom.i
Overflow Files	dataext.p dataextcols.p	Instance	datadefscustom.i
Additional Method Files	cltorsvr.i robjflds.i	–	–

Query class

The super-procedure file for class Query is query.p. Table 1–13 lists the class and custom files related to query.p.

Table 1–13: Custom and class files for queries 

Class files		Custom files
Definition	query.cld	Super	querycustom.p
Method	query.i	Method	querycustom.i
Property	qryprop.i	Property	qrypropcustom.i
Prototype	qryprto.i	Prototype	qryprtocustom.i
Template	–	Exclude	queryexclcustom.i
Overflow files	queryext.p	Instance	querydefscustom.i
Additional method files	delrecst.i tblprep.i	–	–

Note: If the macro {&APP-SERVER-VARS} is defined, the Query class inherits from the AppServer class, represented by the super procedure appserver.p. To force the macro to be defined, set the AppServer-Aware check box in the Procedure Settings dialog box for your object. If there is no such check box, or it is disabled, then you cannot force the definition in that instance. For the list of files defining the AppServer class, see the "AppServer class" section.