public static ISchemaType CreateInstanceByString(string newvalue)
{
// is it a boolean?
if( newvalue.ToLower().CompareTo("false")==0 )
return new SchemaBoolean( false );
if( newvalue.ToLower().CompareTo("true")==0 )
return new SchemaBoolean( true );
// is it a kind of dateTime value?
try
{
SchemaDateTime result = new SchemaDateTime( newvalue );
return result;
}
catch( StringParseException ) {}
try
{
SchemaDuration result = new SchemaDuration( newvalue );
return result;
}
catch( StringParseException ) {}
try
{
SchemaDate result = new SchemaDate( newvalue );
return result;
}
catch( StringParseException ) {}
try
{
SchemaTime result = new SchemaTime( newvalue );
return result;
}
catch( StringParseException ) {}
// is it a numeric value
try
{
decimal tmp = Convert.ToDecimal(newvalue, CultureInfo.InvariantCulture);
if( newvalue.IndexOf(".") < 0 )
{
if( tmp <= Int32.MaxValue && tmp >= Int32.MinValue )
return new SchemaInt( (int)tmp );
return new SchemaLong( (long)tmp );
}
else
{
return new SchemaDecimal( tmp );
}
}
catch (FormatException )
{
// non of all - use string
return new SchemaString( newvalue );
}
}
public SchemaDuration(SchemaDuration obj)
{
myValue = obj.myValue;
months = obj.months;
years = obj.years;
isEmpty = obj.isEmpty;
isNull = obj.isNull;
}