QueryRun.changed Method
Determines whether the specified data source has fetched a new value since the last call to the QueryRun.next method.
Syntax
public boolean changed(TableId table, [int occurrence])
Run On
Called
Parameters
- table
Type: TableId Extended Data Type
The table defining the data source to check. If more than one data source is assigned to the same table, the second parameter can be used to specify which occurrence to use.
- occurrence
Type: int
The data source to check; optional. If more than one data source is assigned to a given table, this argument can be used to determine which data source to check.
Return Value
Type: boolean
true if the specified data source has changed since the last call to QueryRun.next; otherwise, false.
Remarks
This method is useful when data sources are hierarchically structured. A more embedded data source may change many times (such as the customer transactions). This occurs every time that a less embedded data source (such as the customer table) fetches a new record (another customer).
The changedNo method can be used instead of this function.