public JoinPredicate AsJoin()
{
if (!IsJoinPredicate)
{
throw new InvalidOperationException();
}
JoinPredicate predicate = new JoinPredicate(Column, Comparison, (IQueryableColumn)Value);
predicate.OrNextPredicate = OrNextPredicate;
predicate.NextInGroup = NextInGroup == null ? null : NextInGroup.ToExplicitJoinPredicate();
return(predicate);
}
/// <summary>
/// Serves as a hash function for a particular type.
/// </summary>
/// <returns>
/// A hash code for the current <see cref="T:System.Object" />.
/// </returns>
/// <filterpriority>2</filterpriority>
public override int GetHashCode()
{
unchecked
{
int result = (Column != null ? Column.GetHashCode() : 0);
result = (result * 397) ^ (Value != null ? Value.GetHashCode() : 0);
result = (result * 397) ^ (Value2 != null ? Value2.GetHashCode() : 0);
result = (result * 397) ^ Comparison.GetHashCode();
result = (result * 397) ^ (NextInGroup != null ? NextInGroup.GetHashCode() : 0);
result = (result * 397) ^ OrNextPredicate.GetHashCode();
result = (result * 397) ^ OrToPreviousGroup.GetHashCode();
return(result);
}
}
public bool Evaluate(object compare)
{
bool result = false;
switch (Comparison)
{
case Comparison.Equal:
result = CompareToFirstValue(compare) == 0;
break;
case Comparison.NotEqual:
result = CompareToFirstValue(compare) != 0;
break;
case Comparison.Greater:
result = CompareToFirstValue(compare) < 0;
break;
case Comparison.GreaterOrEqual:
result = CompareToFirstValue(compare) <= 0;
break;
case Comparison.Less:
result = CompareToFirstValue(compare) > 0;
break;
case Comparison.LessOrEqual:
result = CompareToFirstValue(compare) >= 0;
break;
case Comparison.Between:
result = CompareToSecondValue(compare) >= 0 && CompareToFirstValue(compare) <= 0;
break;
case Comparison.True:
if (compare is bool)
{
result = (bool)compare;
}
break;
case Comparison.False:
if (compare is bool)
{
result = !(bool)compare;
}
break;
case Comparison.StartsWith:
result = EvalStartsWith(compare);
break;
case Comparison.EndsWith:
result = EvalEndsWith(compare);
break;
case Comparison.Contains:
result = EvalContains(compare);
break;
case Comparison.DoesNotStartWith:
result = !EvalStartsWith(compare);
break;
case Comparison.DoesNotEndWith:
result = !EvalEndsWith(compare);
break;
case Comparison.DoesNotContain:
result = !EvalContains(compare);
break;
}
if (NextInGroup == null)
{
return(result);
}
if (OrNextPredicate)
{
return(result || NextInGroup.Evaluate(compare));
}
return(result && NextInGroup.Evaluate(compare));
}