private SqlExpression ApplyTypeMappingOnLike(LikeExpression likeExpression)
{
var inferredTypeMapping = ExpressionExtensions.InferTypeMapping(
likeExpression.Match, likeExpression.Pattern, likeExpression.EscapeChar)
?? _typeMappingSource.FindMapping(likeExpression.Match.Type);
return(new LikeExpression(
ApplyTypeMapping(likeExpression.Match, inferredTypeMapping),
ApplyTypeMapping(likeExpression.Pattern, inferredTypeMapping),
ApplyTypeMapping(likeExpression.EscapeChar, inferredTypeMapping),
_boolTypeMapping));
}
private SqlExpression ApplyTypeMappingOnSqlBinary(
SqlBinaryExpression sqlBinaryExpression, RelationalTypeMapping typeMapping)
{
var left = sqlBinaryExpression.Left;
var right = sqlBinaryExpression.Right;
Type resultType;
RelationalTypeMapping resultTypeMapping;
RelationalTypeMapping inferredTypeMapping;
switch (sqlBinaryExpression.OperatorType)
{
case ExpressionType.Equal:
case ExpressionType.GreaterThan:
case ExpressionType.GreaterThanOrEqual:
case ExpressionType.LessThan:
case ExpressionType.LessThanOrEqual:
case ExpressionType.NotEqual:
{
inferredTypeMapping = ExpressionExtensions.InferTypeMapping(left, right)
?? _typeMappingSource.FindMapping(left.Type);
resultType = typeof(bool);
resultTypeMapping = _boolTypeMapping;
}
break;
case ExpressionType.AndAlso:
case ExpressionType.OrElse:
{
inferredTypeMapping = _boolTypeMapping;
resultType = typeof(bool);
resultTypeMapping = _boolTypeMapping;
}
break;
case ExpressionType.Add:
case ExpressionType.Subtract:
case ExpressionType.Multiply:
case ExpressionType.Divide:
case ExpressionType.Modulo:
case ExpressionType.Coalesce:
case ExpressionType.And:
case ExpressionType.Or:
{
inferredTypeMapping = typeMapping ?? ExpressionExtensions.InferTypeMapping(left, right);
resultType = left.Type;
resultTypeMapping = inferredTypeMapping;
}
break;
default:
throw new InvalidOperationException("Incorrect operatorType for SqlBinaryExpression");
}
return(new SqlBinaryExpression(
sqlBinaryExpression.OperatorType,
ApplyTypeMapping(left, inferredTypeMapping),
ApplyTypeMapping(right, inferredTypeMapping),
resultType,
resultTypeMapping));
}