public MapTypeContext(MapContext context, Dictionary <string, List <ColumnInfo> > columnNames, Type targetType, string name, string currentPrefix, Expression getExisting)
{
_context = context;
_columnNames = columnNames;
TargetType = targetType;
Name = name;
GetExisting = getExisting;
CurrentPrefix = currentPrefix ?? "";
}
private Func <IDataRecord, T> CreateMapInternal <T>(Action <IMapCompilerSettings> setup)
{
var settings = new CompilationSettings();
var compilerBuilder = new MapCompilerSettings(settings);
setup?.Invoke(compilerBuilder);
var operation = new MapContext(Provider, typeof(T), settings);
var map = Context.MapCompiler.Compile <T>(operation, Reader.Reader);
return(map);
}
public Func <IDataRecord, T> Compile <T>(MapContext operation, IDataReader reader)
{
Argument.NotNull(operation, nameof(operation));
// For all other cases, fall back to normal recursive conversion routines.
var state = operation.CreateContextFromDataReader(reader);
var expressions = _compiler.Compile(state);
var statements = expressions.Expressions.Concat(new[] { expressions.FinalValue }).Where(e => e != null);
var lambdaExpression = Expression.Lambda <Func <IDataRecord, T> >(
Expression.Block(
typeof(T),
expressions.Variables,
statements
),
operation.RecordParam
);
DumpCodeToDebugConsole(lambdaExpression);
return(lambdaExpression.Compile());
}
