public void TestMapper()
{
IIonValue ionStruct = IonLoader.Default
.Load("{name: \"John\", age: 22, address: {city: \"cityName\", street: \"streetName\", isApartment: false}}");
var lossyIonMapper = IonMapper.LOSSY();
Person person = lossyIonMapper.FromIon <Person>(ionStruct);
Console.WriteLine(person.ToString());
IIonValue ionValue = lossyIonMapper.ToIon <Person>(person);
Console.WriteLine(ionValue.ToPrettyString());
Console.WriteLine("\n \n ==== Now with a customized mapper === \n");
Func <IIonString, string> specialIonStringMapper = ionValue => (ionValue.StringValue).ToUpper();
Func <IIonInt, int> specialIonIntMapper = ionValue => (ionValue.IntValue) * 3;
Func <IIonBool, bool> specialIonBoolMapper = ionValue => !(ionValue.BoolValue);
var customizedMapper = new CustomIonMapper(MapperTypes.LOSSY)
.WithMapperFromIonTo <string>(specialIonStringMapper)
.WithMapperFromIonTo <int>(specialIonIntMapper)
.WithMapperFromIonTo <bool>(specialIonBoolMapper)
.Build();
person = customizedMapper.FromIon <Person>(ionStruct);
Console.WriteLine(person.ToString());
ionValue = customizedMapper.ToIon <Person>(person);
Console.WriteLine(ionValue.ToPrettyString());
}
internal override IIonReader GetIonReader(IIonValue ionValue)
{
MemoryStream ms = new MemoryStream();
IIonWriter writer = IonBinaryWriterBuilder.Build(ms);
IIonReader reader = IonReaderBuilder.Build(ionValue.ToPrettyString());
writer.WriteValues(reader);
writer.Flush();
return(IonReaderBuilder.Build(ms.ToArray()));
}
private async Task <T> GetFromQldb <T>(object eventId) where T : AuditEvent
{
var driver = QldbDriver.Value;
var(insertDocumentId, tableName) = (ValueTuple <string, string>)eventId;
IIonValue selectedEvent = null;
await driver.Execute(async trx =>
{
selectedEvent = await(await trx.Execute(
$@"SELECT e.*
FROM {tableName} AS e BY eid
WHERE eid = ?",
new ValueFactory().NewString(insertDocumentId))).FirstAsync();
});
var selectedAuditEvent = AuditEvent.FromJson <T>(selectedEvent.ToPrettyString());
return(selectedAuditEvent);
}
internal override IIonReader GetIonReader(IIonValue ionValue)
{
return(IonReaderBuilder.Build(ionValue.ToPrettyString()));
}