internal virtual string Visit(DryadOutputNode node,
CodeMemberMethod vertexMethod,
string[] readerNames,
string[] writerNames)
{
return(node.AddVertexCode(vertexMethod, readerNames, writerNames));
}
// create DryadLinqMetaData from a query OutputNode
internal static DryadLinqMetaData FromOutputNode(HpcLinqContext context, DryadOutputNode node)
{
DryadLinqMetaData metaData = new DryadLinqMetaData();
if (!(DataPath.IsDsc(node.MetaDataUri) || DataPath.IsHdfs(node.MetaDataUri)))
{
throw new InvalidOperationException();
}
metaData.m_context = context;
metaData.m_dscStreamName = node.MetaDataUri;
metaData.m_elemType = node.OutputTypes[0];
metaData.m_compressionScheme = node.OutputCompressionScheme;
//metaData.m_version = context.ClientVersion;
//metaData.InitializeFlags();
//metaData.m_fp = 0UL;
//metaData.m_dataSetInfo = node.OutputDataSetInfo;
return(metaData);
}
