public override JoinExpression GetJoinExpression()
{
var rightIdentifier = AliasIdentifierExpression;
var leftIdentifier = Left.AliasIdentifierExpression;
var onCondition = default(QueryExpression);
foreach (var columnPair in _joinColumnPairs)
{
var newCondition = QueryExpression.Compare(
QueryExpression.Column(columnPair.LeftColumnName, leftIdentifier),
ComparisonOperator.AreEqual,
QueryExpression.Column(columnPair.RightColumnName, rightIdentifier)
);
onCondition = QueryExpression.CombineConditions(onCondition, ConditionType.AndAlso, newCondition);
}
return(QueryExpression.Join(
QueryExpression.Alias(
Right.AliasIdentifierExpression, rightIdentifier.Identifier
),
onCondition,
JoinDirection.Left
));
}
public void OrElse(QueryExpression queryExpression)
=> _expression = QueryExpression.CombineConditions(
_expression,
ConditionType.OrElse,
queryExpression
);
public void AndAlso(QueryExpression queryExpression)
=> _expression = QueryExpression.CombineConditions(
_expression,
ConditionType.AndAlso,
queryExpression
);