public static IQuerySource GetQuerySource(Expression expression)
{
var sourceExtractor = new QuerySourceExtractor();
sourceExtractor.VisitExpression(expression);
return(sourceExtractor._querySource);
}
public bool CanAddJoin(Expression expression)
{
var source = QuerySourceExtractor.GetQuerySource(expression);
if (_queryModel.MainFromClause == source)
{
return(true);
}
var bodyClause = source as IBodyClause;
if (bodyClause != null && _queryModel.BodyClauses.Contains(bodyClause))
{
return(true);
}
var resultOperatorBase = source as ResultOperatorBase;
return(resultOperatorBase != null && _queryModel.ResultOperators.Contains(resultOperatorBase));
}
public static IQuerySource GetQuerySource(Expression expression)
{
var sourceExtractor = new QuerySourceExtractor();
sourceExtractor.VisitExpression(expression);
return sourceExtractor._querySource;
}
