public StringOrIntComparer(
IComparer <string> stringComparer,
IEqualityComparer <string> stringEqualityComparer,
NullComparison nullComparison = NullComparison.NullsFirst)
: base(nullComparison)
{
this.stringComparer = stringComparer;
this.stringEqualityComparer = stringEqualityComparer;
}
public FranchiseEntryTitleComparer(
CultureInfo culture,
NullComparison nullComparison = NullComparison.NullsFirst)
: base(nullComparison)
{
this.titleComparer = new TitleComparer(culture);
this.baseComparer = ComparerBuilder.For <FranchiseEntry>()
.OrderBy(this.GetTitleName)
.ThenBy(entry => entry.GetStartYear())
.ThenBy(entry => entry.GetEndYear());
}
public ListItemTitleComparer(
CultureInfo culture,
IComparer <ListItem> otherComparer,
Func <ListItem, string> getTitle,
Func <Franchise, string> getFranchiseTitle,
NullComparison nullComparison = NullComparison.NullsFirst)
: base(nullComparison)
{
this.getTitle = getTitle;
this.getFranchiseTitle = getFranchiseTitle;
this.titleComparer = new TitleComparer(culture);
this.otherComparer = otherComparer;
this.titleAndOtherComparer = ComparerBuilder.For <ListItem>()
.OrderBy(this.getTitle, this.titleComparer)
.ThenBy(otherComparer);
}
protected NullableComparerBase(NullComparison nullComparison) => this.NullComparison = nullComparison;
protected override Expression VisitBinary(BinaryExpression node)
{
switch (node.NodeType)
{
case ExpressionType.NotEqual:
case ExpressionType.Equal:
var @null = new NullComparison().Extract(node);
if (@null.Null)
{
var column = _columns.Single(@null.Path);
Builder.Append(column.Column()).Append(" IS ");
switch (node.NodeType)
{
case ExpressionType.NotEqual: Builder.Append("NOT NULL"); break;
case ExpressionType.Equal: Builder.Append("NULL"); break;
}
return(node);
}
break;
}
if (ExpressionType.OrElse == node.NodeType)
{
Builder.Append('(');
}
Visit(node.Left);
Builder.Append(' ');
/*
* TODO: We should really be checking for valid comparisons
*
* There are some constraints for key fields, IIRC they can only use =
*/
switch (node.NodeType)
{
case ExpressionType.LessThanOrEqual: Builder.Append("<="); break;
case ExpressionType.LessThan: Builder.Append("<"); break;
case ExpressionType.GreaterThanOrEqual: Builder.Append(">="); break;
case ExpressionType.GreaterThan: Builder.Append(">"); break;
case ExpressionType.Equal: Builder.Append("="); break;
case ExpressionType.NotEqual: Builder.Append("!="); break;
case ExpressionType.AndAlso: Builder.Append("AND"); break;
case ExpressionType.OrElse: Builder.Append("OR"); break;
default:
throw new ArgumentException("NodeType: " + node.NodeType);
}
Builder.Append(' ');
Visit(node.Right);
if (ExpressionType.OrElse == node.NodeType)
{
Builder.Append(')');
}
return(node);
}
