/// <summary>
/// Reads an object. The reader must be positioned on the element name.
/// </summary>
/// <param name="sr">This <see cref="IStructuredReader"/> object.</param>
/// <param name="elementName">Name of the xml element.</param>
/// <returns>Object read.</returns>
static public object ReadObjectElement( this IStructuredReader sr, string elementName )
{
// This does the trick: it raises an XmlException.
if( !sr.Xml.IsStartElement( elementName ) ) sr.Xml.ReadStartElement( elementName );
StandardReadStatus status;
object o = sr.ReadInlineObject( out status );
if( (status & StandardReadStatus.ErrorMask) != 0 ) throw new CKException( R.UnableToReadInlineObject );
return o;
}
/// <summary>
/// Reads an object. The reader must be positioned on the element name.
/// </summary>
/// <param name="sr">This <see cref="IStructuredReader"/> object.</param>
/// <param name="elementName">Name of the xml element.</param>
/// <param name="o">The object read. Null on error.</param>
/// <returns>A <see cref="StandardReadStatus"/> that may define an error.</returns>
static public StandardReadStatus ReadObjectElement( this IStructuredReader sr, string elementName, out object o )
{
// This does the trick: it raises an XmlException.
if( !sr.Xml.IsStartElement( elementName ) )
{
o = null;
return StandardReadStatus.ErrorXmlRead;
}
StandardReadStatus status;
o = sr.ReadInlineObject( out status );
return status;
}
static ReadElementObjectInfo ReadObjectInfo(IStructuredReader sr)
{
Debug.Assert(sr.Xml.Name == "data");
object o = null;
string errorMessage = "Missing or empty 'key' attribute.";
ReadElementObjectInfo.ReadStatus status = ReadElementObjectInfo.ReadStatus.ErrorKeyAttributeMissing;
string key = sr.Xml.GetAttribute("key");
bool readDone = false;
if (key != null)
{
key = key.Trim();
if (key.Length > 0)
{
try
{
readDone = true;
StandardReadStatus readStatus;
o = sr.ReadInlineObject(out readStatus);
status = (ReadElementObjectInfo.ReadStatus)readStatus;
}
catch (Exception ex)
{
status |= ReadElementObjectInfo.ReadStatus.ErrorWhileReadingElementObject;
errorMessage = ex.Message;
}
}
}
if ((status & ReadElementObjectInfo.ReadStatus.ErrorMask) == 0)
{
return(new ReadElementObjectInfo(status, key, o));
}
if (!readDone)
{
sr.Xml.Skip();
}
return(new ReadElementObjectInfo(status, sr.Xml, errorMessage));
}
public void SimpleStructuredSerializerTest()
{
string testPath = TestBase.GetTestFilePath("CKTests.Storage", "StructuredSerializer");
IStructuredSerializer <Dog> serializer = new SimpleStructuredDogSerializer();
Dog dog = CreateDog();
using (Stream str = new FileStream(testPath, FileMode.Create))
{
using (IStructuredWriter writer = SimpleStructuredWriter.CreateWriter(str, new SimpleServiceContainer()))
{
// This is an independant scope: we just created the writer...
writer.ServiceContainer.Add <UniqueService>(new UniqueService());
writer.ServiceContainer.Add <IStructuredSerializer <Dog> >(new SimpleStructuredDogSerializer());
writer.ServiceContainer.Add <IStructuredSerializer <Paw> >(new SimpleStructuredPawSerializer());
writer.WriteObjectElement("Dog", dog);
}
}
Dog readDog;
// 1 - Use ReadInlineObject
using (Stream str = new FileStream(testPath, FileMode.Open))
using (IStructuredReader reader = CreateConfiguredReader(str))
{
// This is an independant scope: we just created the reader...
reader.ServiceContainer.Add <UniqueService>(new UniqueService());
StandardReadStatus status;
object o = reader.ReadInlineObject(out status);
readDog = o as Dog;
}
CheckReadDog(readDog);
// 2 - Use ReadInlineObjectStructured( Type )
using (Stream str = new FileStream(testPath, FileMode.Open))
using (IStructuredReader reader = CreateConfiguredReader(str))
{
// This is an independant scope: we just created the reader...
reader.ServiceContainer.Add <UniqueService>(new UniqueService());
Assert.That(reader.Xml.IsStartElement("Dog"));
// We ignore attributes added by WriteObjectElement: we directly call ReadInlineObjectStructured for the Dog type.
object o = reader.ReadInlineObjectStructured(typeof(Dog), null);
readDog = o as Dog;
}
CheckReadDog(readDog);
// 3 - Use ReadInlineObjectStructured( object )
using (Stream str = new FileStream(testPath, FileMode.Open))
using (IStructuredReader reader = CreateConfiguredReader(str))
{
// This is an independant scope: we just created the reader...
reader.ServiceContainer.Add <UniqueService>(new UniqueService());
Assert.That(reader.Xml.IsStartElement("Dog"));
readDog = new Dog();
// We ignore attributes added by WriteObjectElement: we directly call ReadInlineObjectStructured for an empty Dog object.
object o = reader.ReadInlineObjectStructured(readDog);
}
CheckReadDog(readDog);
}
