Online Documentation for Advanced Data Import for RAD Studio VCL
property WriteOnFly : boolean;
The WriteOnFly property determines how the source xml file will be read and imported. If WriteOnFly is set to False then the source file will be read and parsed completely, and after that the prepared data will be imported to the destination object (e.g. TDataSet, TDBGrid etc.). If WriteOnFly is set to true each tag will be read, parsed and imported separately without temporary saving to memory.