protected virtual Expression VisitIn(DbInExpression inExp)
{
var expr = this.Visit(inExp.Expression);
var select = this.Visit(inExp.Select) as DbSelectExpression;
var values = this.VisitExpressionList(inExp.Values);
return(this.UpdateIn(inExp, expr, select, values));
}
protected virtual bool CompareIn(DbInExpression a, DbInExpression b)
{
return
(
this.Compare(a.Expression, b.Expression) &&
this.Compare(a.Select, b.Select) &&
this.CompareExpressionList(a.Values, b.Values)
);
}
protected DbInExpression UpdateIn(DbInExpression inExp, Expression expression, DbSelectExpression select, IEnumerable <Expression> values)
{
if (expression != inExp.Expression || select != inExp.Select || values != inExp.Values)
{
if (select != null)
{
return(new DbInExpression(expression, select));
}
else
{
return(new DbInExpression(expression, values));
}
}
return(inExp);
}
protected override Expression VisitIn(DbInExpression inExp)
{
if (inExp.Values != null)
{
if (inExp.Values.Count == 0)
{
this.Write("0 <> 0");
}
else
{
this.VisitValue(inExp.Expression);
this.Write(" IN (");
for (int i = 0, n = inExp.Values.Count; i < n; i++)
{
if (i > 0)
{
this.Write(", ");
}
this.VisitValue(inExp.Values[i]);
}
this.Write(")");
}
}
else
{
this.VisitValue(inExp.Expression);
this.Write(" IN (");
this.WriteLine(Indentation.Inner);
this.Visit(inExp.Select);
this.WriteLine(Indentation.Same);
this.Write(")");
this.Indent(Indentation.Outer);
}
return(inExp);
}