Using Caché Objects - InterSystems Documentation

Using Objects with Caché ObjectScript
Set code = rset.Data("Code")
You can also read data stored in the current row by specifying the column number as follows:
Set data = rset.GetData(n)
where data contains the data stored in column n.
Alternately, you can read data for a specific column name by using the GetDataByName
method:
Set data = rset.GetDataByName(fieldname)
where data contains the data in the column named fieldname. This is less efficient than using
the Data property as a method call is slower than a property reference.
Once all of the relevant data has been retrieved from one row, execute the Next method to
move to the next row of data. You can progress through each row, using GetData or
GetDataByName to retrieve the relevant data.
10.7.5 Closing Queries
Once you have processed all a result set's rows, close it as follows:
Do rset.Close()
Set sc = rset.Close()
sc, in the second line of code, is a local variable where the method can return a status code
containing error information.
The Close method releases any resources held by the %ResultSet object. Once the result set
is closed, you can use the %ResultSet object to run and process other queries by changing
the value of the ClassName and QueryName properties.
Calling the Close method is optional; when the %ResultSet object is destroyed (goes out of
scope) it will be automatically closed.
10.7.6 Example of Using a Class Query
The following code shows how to use a %ResultSet object to execute a class query and process
the results:
86 Using Caché Objects