public JoinQueryExpression Build()
{
var rightIdentifier = QueryExpression.AliasReference(((IAliasIdentifier)this).AliasIdentifier);
var leftIdentifier = QueryExpression.AliasReference(Left.AliasIdentifier);
var onCondition = default(QueryExpression);
foreach (var columnPair in ColumnPairs)
{
var newCondition = QueryExpression.AreEqual(
QueryExpression.Column(columnPair.LeftColumnName, leftIdentifier),
QueryExpression.Column(columnPair.RightColumnName, rightIdentifier)
);
onCondition = onCondition.AndAlso(newCondition);
}
return(QueryExpression.Join(
QueryExpression.As(
QueryExpression.AliasReference(Right.AliasIdentifier), rightIdentifier.IdentifierName, out var _
),
onCondition,
Direction
));
}
protected override QueryExpression Accept(QueryExpressionVisitor expressionVisitor)
{
return(expressionVisitor.Visit(
QueryExpression.AliasReference(AliasIdentifier.AliasIdentifier)
));
}