protected override DataObject EvaluateBinary(DataObject ob1, DataObject ob2, IEvaluateContext context)
{
if (ob1.IsNull)
{
return(ob1);
}
if (ob2.IsNull)
{
return(ob2);
}
char cEscape = '\\';
if (Escape is ConstantExpression)
{
// TODO: some more checks...
var escapeValue = ((ConstantExpression)Escape).Value;
cEscape = escapeValue.ToString()[0];
}
string val = ob1.CastTo(PrimitiveTypes.String()).ToStringValue();
string pattern = ob2.CastTo(PrimitiveTypes.String()).ToStringValue();
return(DataObject.Boolean(PatternSearch.FullPatternMatch(pattern, val, cEscape)));
}
public SqlBoolean IsLike(ISqlString value, ISqlString pattern)
{
if (value == null && IsNull)
{
return(true);
}
if (!IsNull && value == null)
{
return(false);
}
if (value == null)
{
return(false);
}
var s1 = value.ToString();
var s2 = pattern.ToString();
return(PatternSearch.FullPatternMatch(s1, s2, '\\'));
}
