internal override string CreateSqlString(CommandFactory factory, bool isFullName, CreateSqlState state)
{
string sql = state.GetDataSql(this, isFullName);
if (sql != null)
{
return(sql);
}
object left;
object right;
DataFieldInfo leftInfo = _left as DataFieldInfo;
DataFieldInfo rightInfo = _right as DataFieldInfo;
if (!Object.Equals(leftInfo, null) && !Object.Equals(rightInfo, null))
{
left = leftInfo.CreateSqlString(factory, isFullName, state);
right = rightInfo.CreateSqlString(factory, isFullName, state);
}
else if (!Object.Equals(leftInfo, null))
{
left = leftInfo.CreateSqlString(factory, isFullName, state);
object rightObject = LambdaExpressionExtend.ConvertLambdaObject(_right);
right = state.AddDataParameter(factory, rightObject);
}
else if (!Object.Equals(rightInfo, null))
{
right = rightInfo.CreateSqlString(factory, isFullName, state);
object leftObject = LambdaExpressionExtend.ConvertLambdaObject(_left);
left = state.AddDataParameter(factory, leftObject);
}
else
{
throw new LightDataException(SR.DataFieldContentError);
}
switch (_opera)
{
case MathOperator.Puls:
sql = factory.CreatePlusSql(left, right);
break;
case MathOperator.Minus:
sql = factory.CreateMinusSql(left, right);
break;
case MathOperator.Multiply:
sql = factory.CreateMultiplySql(left, right);
break;
case MathOperator.Divided:
sql = factory.CreateDividedSql(left, right);
break;
case MathOperator.Mod:
sql = factory.CreateModSql(left, right);
break;
case MathOperator.Power:
sql = factory.CreatePowerSql(left, right);
break;
}
state.SetDataSql(this, isFullName, sql);
return(sql);
}