public EnumerateFactory <TItem> Compile <TItem>(EnumerateResult result)
{
List <Expression> body = new List <Expression>();
if (result.Value == null)
{
return(_ => default);
public EnumerateResult Parse(IEnumerable <ColumnAttribute> header)
{
NodeTree nodeTree = NodeParser.Parse(this.Schema, header);
Node valueNode = nodeTree.Items.FirstOrDefault(this.IsResultNode);
Node listNode = nodeTree.Items.FirstOrDefault(this.IsResultListNode);
EnumerateResult result = new EnumerateResult(this.Schema);
result.Value = this.CreateReader(result, listNode ?? valueNode);
return(result);
}
public static EnumerateFactory <T> GetEnumerateFactory <T>(ISchema schema, IDataRecord header)
{
ColumnCacheKey cacheKey = GetCacheKey(schema, QueryType.List, header);
return((EnumerateFactory <T>)enumerateMap.GetOrAdd(cacheKey, k =>
{
EnumerateParser parser = new EnumerateParser(schema);
EnumerateResult result = parser.Parse(k.Header);
QueryCompiler compiler = new QueryCompiler();
return compiler.Compile <T>(result);
}));
}
