/// <summary>
/// Encodes the object in the specified stream.
/// </summary>
/// <param name="messageContext">The context.</param>
/// <param name="stream">The stream to use.</param>
public override void Encode(IServiceMessageContext messageContext, Stream stream)
{
bool topLevelIsArray = !HasNetworkMessageHeader && !HasSingleDataSetMessage && !IsMetaDataMessage;
using (JsonEncoder encoder = new JsonEncoder(messageContext, true, topLevelIsArray, stream))
{
if (IsMetaDataMessage)
{
EncodeNetworkMessageHeader(encoder);
encoder.WriteEncodeable(kFieldMetaData, m_metadata, null);
return;
}
// handle no header
if (HasNetworkMessageHeader)
{
Encode(encoder);
}
else if (DataSetMessages != null && DataSetMessages.Count > 0)
{
if (HasSingleDataSetMessage)
{
// encode single dataset message
JsonDataSetMessage jsonDataSetMessage = DataSetMessages[0] as JsonDataSetMessage;
if (jsonDataSetMessage != null)
{
if (!jsonDataSetMessage.HasDataSetMessageHeader)
{
// If the NetworkMessageHeader and the DataSetMessageHeader bits are not set
// and SingleDataSetMessage bit is set, the NetworkMessage is a JSON object
// containing the set of name/value pairs defined for a single DataSet.
jsonDataSetMessage.EncodePayload(encoder, false);
}
else
{
// If the SingleDataSetMessage bit of the NetworkMessageContentMask is set,
// the content of the Messages field is a JSON object containing a single DataSetMessage.
jsonDataSetMessage.Encode(encoder);
}
}
}
else
{
// If the NetworkMessageHeader bit of the NetworkMessageContentMask is not set,
// the NetworkMessage is the contents of the Messages field (e.g. a JSON array of DataSetMessages).
foreach (var message in DataSetMessages)
{
JsonDataSetMessage jsonDataSetMessage = message as JsonDataSetMessage;
if (jsonDataSetMessage != null)
{
jsonDataSetMessage.Encode(encoder);
}
}
}
}
}
}
/// <summary>
/// Encode DataSetMessages
/// </summary>
private void EncodeMessages(JsonEncoder encoder)
{
if (DataSetMessages != null && DataSetMessages.Count > 0)
{
if (HasSingleDataSetMessage)
{
// encode single dataset message
JsonDataSetMessage jsonDataSetMessage = DataSetMessages[0] as JsonDataSetMessage;
if (jsonDataSetMessage != null)
{
jsonDataSetMessage.Encode(encoder, kFieldMessages);
}
}
else
{
encoder.PushArray(kFieldMessages);
foreach (var message in DataSetMessages)
{
JsonDataSetMessage jsonDataSetMessage = message as JsonDataSetMessage;
if (jsonDataSetMessage != null)
{
jsonDataSetMessage.Encode(encoder);
}
}
encoder.PopArray();
}
}
}
/// <summary>
/// Encodes the object and returns the resulting byte array.
/// </summary>
/// <returns></returns>
public override byte[] Encode()
{
ServiceMessageContext messageContext = new ServiceMessageContext();
messageContext.NamespaceUris = ServiceMessageContext.GlobalContext.NamespaceUris;
messageContext.ServerUris = ServiceMessageContext.GlobalContext.ServerUris;
bool topLevelIsArray = !HasNetworkMessageHeader && !HasSingleDataSetMessage;
using (JsonEncoder encoder = new JsonEncoder(messageContext, false, null, topLevelIsArray))
{
// handle no header
if (HasNetworkMessageHeader)
{
Encode(encoder);
}
else if (DataSetMessages != null && DataSetMessages.Count > 0)
{
if (HasSingleDataSetMessage)
{
// encode single dataset message
JsonDataSetMessage jsonDataSetMessage = DataSetMessages[0] as JsonDataSetMessage;
if (jsonDataSetMessage != null)
{
if (!jsonDataSetMessage.HasDataSetMessageHeader)
{
// (UA Specs:) If the NetworkMessageHeader and the DataSetMessageHeader bits are not set
// and SingleDataSetMessage bit is set, the NetworkMessage
// is a JSON object containing the set of name/value pairs defined for a single DataSet.
jsonDataSetMessage.EncodePayload(encoder, false);
}
else
{
// If the SingleDataSetMessage bit of the NetworkMessageContentMask is set,
// the content of the Messages field is a JSON object containing a single DataSetMessage.
jsonDataSetMessage.Encode(encoder);
}
}
}
else
{
// If the NetworkMessageHeader bit of the NetworkMessageContentMask is not set,
// the NetworkMessage is the contents of the Messages field (e.g. a JSON array of DataSetMessages).
foreach (var message in DataSetMessages)
{
JsonDataSetMessage jsonDataSetMessage = message as JsonDataSetMessage;
if (jsonDataSetMessage != null)
{
jsonDataSetMessage.Encode(encoder);
}
}
}
}
byte[] bytes = System.Text.Encoding.ASCII.GetBytes(encoder.CloseAndReturnText());
return(bytes);
}
}
