In the georestwebservice project in this chapter, the source code is an updated version of the API with the new recordFeature method in the daoapi.dart file, which is as follows:
Future<List<String>> recordFeature(String json) async {
var dbConn;
DateTime time = new DateTime.now();
String featureID = time.millisecondsSinceEpoch.toString();
List<String> result = new List<String>();
try {
dbConn = await connect(uri);
await dbConn.execute(
'insert into dm_quakefeatures (qufeat_id, geojson) values (@qufeat_id, @geojson)',
{'qufeat_id': featureID, 'geojson': json});
} catch (exception, stacktrace) {
print(exception);
print(stacktrace);
} finally {
dbConn.close();
}
result.add(featureID);
return result;
}This method will create a featureID string for the incoming feature's details, which is then inserted in to the dm_quakefeatures table together with the supplied data from the client. The generated...