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Posted to dev@ibatis.apache.org by "Gilles Bayon (JIRA)" <ib...@incubator.apache.org> on 2005/09/18 17:04:56 UTC

[jira] Closed: (IBATISNET-110) Whitespace is not maintained properly when CDATA tags are used

     [ http://issues.apache.org/jira/browse/IBATISNET-110?page=all ]
     
Gilles Bayon closed IBATISNET-110:
----------------------------------

    Fix Version: DataMapper 1.3
     Resolution: Fixed

In SVN

> Whitespace is not maintained properly when CDATA tags are used
> --------------------------------------------------------------
>
>          Key: IBATISNET-110
>          URL: http://issues.apache.org/jira/browse/IBATISNET-110
>      Project: iBatis for .NET
>         Type: Bug
>     Reporter: Ron Grabowski
>     Assignee: Gilles Bayon
>      Fix For: DataMapper 1.3

>
> The ParseDynamicTags method in DomSqlMapBuilder.cs calls Trim() when building the sql statement. The following statement:
>  <statement id="GetMany"><![CDATA[SELECT * FROM User ]]></statement>
>  <statement id="GetOne" extends="GetMany"> WHERE Id=3</statement</statement>
> is incorrectly constructed as:
>  SELECT * FROM UserWHERE Id=3
> when it should be:
>  SELECT * FROM User WHERE Id=3
> The same error occurs when two or more CDATA nodes and/or a Text node is used inside the same statement. This statement:
>  <statement id="GetMany">
>   <![CDATA[SELECT * ]]>
>   <![CDATA[FROM ]]>
>  User
>  </statement>
> is incorrectly rendered as:
>  SELECT *FROMUser
> This is the offending code:
>  string data = child.InnerText.Replace('\n', ' ').Replace('\r', ' ').Replace('\t', ' ').Trim(); //??
> One solution is to trim the beginning of the first node and trim the end of the last node:
>  string data = child.InnerText.Replace('\n', ' ').Replace('\r', ' ').Replace('\t', ' ');
>  if (i == 0)
>  {
>   // trim whitespace from the beginning of the string
>   data = Regex.Replace(data, @"^\s*(.*)$", "$1");
>  }
>  else if (i == children.Count - 1)
>  {
>  // trim whitespace from the end of the string
>  data = Regex.Replace(data, @"^(.*?)\s*$", "$1");
>  }
> Yes, I know there is a TrimStart and TrimEnd method but I think there are more whitespace characters than just " ", "\n", "\t", "\r"...especially if the xml file is encoded with a funky content-type. There may be a more effecient regular expression to remove whitespace.
> Another solution is to remove the call to Trim after Replace.
> I think that if the user is using a CDATA node, they probably don't want their sql messed with. Perhaps if we encounter a CDATA node we shouldn't try to make it all fit on one line:
>  trimCdataNodes="false" ???
> Thank you to Chad Humphries for encountering this bug.

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