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remove namespace xdt did not work

I have base.xml and target.xml, and I want to apply the target to base.
1.base.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
  <appSettings>
    <add key="test20180523" value="1" />
  </appSettings>
</configuration>

2.target.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <appSettings>
    <add key="test20180523" value="1" />
  </appSettings>
</configuration>

3.patch file

<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0" xdt:Transform="RemoveAttributes(xmlns)" xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform" />

4.nothing happened when I apply the patch to the source.

NPE at XdtDiffWriter: line 409

In the case where there is an element that is missing/was removed from the target instance you are passing a "null" to WriteElement at line 230. This causes an NPE at line 409 when it attempts to access the Parent property.

Microsoft.Web.XmlTransform.XmlNodeException: No element in the source document matches

Hi,
I have two xml files
base.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
  <appSettings>
    <add key="test20180421" value="1" />
     <add key="test20180422" value="2" />
  </appSettings>
</configuration>

target.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <appSettings>
      <add key="test20180421" value="1" />
     <add key="test20180423" value="3" />
     <add key="test20180422" value="2" />
  </appSettings>
</configuration>

I got the patch.xml as following

<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0" xdt:Transform="RemoveAttributes(xmlns)" xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
  <appSettings>
    <add key="test20180423" value="3" xdt:Transform="InsertBefore(/configuration/appSettings/add[(@key='test20180422')])" />
  </appSettings>
</configuration>

when I try to apply the source, I got the exception

Microsoft.Web.XmlTransform.XmlNodeException: No element in the source document matches '/configuration/appSettings/add[(@key='test20180422')]' ---> Microsoft.Web.XmlTransform.XmlTransformationException: No element in the source document matches '/configuration/appSettings/add[(@key='test20180422')]'
at Microsoft.Web.XmlTransform.InsertBase.get_SiblingElement()
at Microsoft.Web.XmlTransform.InsertBefore.Apply()
at Microsoft.Web.XmlTransform.Transform.ApplyOnce()
at Microsoft.Web.XmlTransform.Transform.Execute(XmlElementContext context, String argumentString)
--- End of inner exception stack trace ---
at Microsoft.Web.XmlTransform.XmlTransformationLogger.LogErrorFromException(Exception ex)
at Microsoft.Web.XmlTransform.XmlTransformation.Apply(XmlDocument xmlTarget)
at FatAntelope.CommandLine.Program.Main(String[] args) in E:\GitHub\Other\FatAntelope\FatAntelope.CommandLine\Program.cs:line 104
Microsoft.Web.XmlTransform.XmlTransformationException: No element in the source document matches '/configuration/appSettings/add[(@key='test20180422')]'
at Microsoft.Web.XmlTransform.InsertBase.get_SiblingElement()
at Microsoft.Web.XmlTransform.InsertBefore.Apply()
at Microsoft.Web.XmlTransform.Transform.ApplyOnce()
at Microsoft.Web.XmlTransform.Transform.Execute(XmlElementContext context, String argumentString)

XPath in an InsertBefore transform is using a trait of the parent node that's been transformed into something else

(Side note: This tool is really cool! Out of 160 or so web.configs that I'm diffing from a common base and then applying a transform to as a test, only one of those files broke with this particular issue. Definitely will be a massive time saver for us)

The exception is as follows:

An unhandled exception of type 'Microsoft.Web.XmlTransform.XmlNodeException' occurred in Microsoft.Web.XmlTransform.dll

Additional information: No element in the source document matches '/configuration/system.webServer/rewrite/rules/rule[(@name='Slideshow')]/*[1]'

From what I can see from my quick dig through the source and generated transform, the relevant snippet of the transform that's breaking is:

<!-- ... -->
<rule xdt:Locator="Condition(2)" name="foo" xdt:Transform="SetAttributes(name)">
    <conditions logicalGrouping="MatchAll" xdt:Transform="InsertBefore(/configuration/system.webServer/rewrite/rules/rule[(@name='Slideshow')]/*[1])">
    <!-- ... -->
</rule>
<!-- ... -->

As you can see, it's transforming the name of the <rule> to foo, but then a nested transform has an XPath that's trying to refer to the <rule> by its old name of Slideshow.

I can reproduce this issue with the following files:

base.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <rewrite>
            <rules>
                <rule name="Redirect to https" stopProcessing="true">
                    <match url="(.*)"/>
                    <conditions>
                        <add input="{HTTPS}" pattern="off" ignoreCase="true"/>
                    </conditions>
                    <action type="Redirect" url="https://{HTTP_HOST}{REQUEST_URI}" redirectType="Permanent"/>
                </rule>
                <rule name="Slideshow" stopProcessing="true">
                    <match url="^s/([^/]*)/([^/]*)(/)?(.*)?" ignoreCase="true"/>
                    <action type="Rewrite" url="slides/page.aspx?view={R:1}&amp;site={R:2}&amp;nav={R:4}"/>
                </rule>
            </rules>
        </rewrite>
    </system.webServer>
</configuration>

target.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <rewrite>
            <rules>
                <rule name="Redirect to https" stopProcessing="true">
                    <match url="(.*)" />
                    <conditions>
                        <add input="{HTTPS}" pattern="off" ignoreCase="true" />
                    </conditions>
                    <action type="Redirect" url="https://{HTTP_HOST}{REQUEST_URI}" redirectType="Permanent" />
                </rule>

                <rule name="foo" stopProcessing="true">
                  <conditions logicalGrouping="MatchAll">
                    <add input="{HTTP_HOST}" pattern="foo.example.com" negate="false" />
                  </conditions>
                  <action type="Redirect" url="redacted" appendQueryString="false" redirectType="Permanent" />
                </rule>

            </rules>
        </rewrite>
    </system.webServer>
</configuration>

Use Insert instead of InsertBefore when the delta only exist in target

source file

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
	<startup>
		<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
	</startup>
	<appSettings>
		<add key="test20180421" value="1" />
		<add key="test20180422" value="2" />
	</appSettings>
</configuration>

target file

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <startup>
	  <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
  </startup>
  <appSettings>
	  <add key="test20180421" value="1" />
	  <add key="test20180422" value="2" />
	  <add key="test20180423" value="3" />
	  <add key="test20180424" value="4" />
	</appSettings>
</configuration>

The generated patch file is

<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
  <appSettings>
    <add key="test20180424" value="4" xdt:Transform="Insert" />
    <add key="test20180423" value="3" xdt:Transform="InsertBefore(/configuration/appSettings/add[(@key='test20180424')])" />
  </appSettings>
</configuration>

The expected format should be, which is good for manually maintain

<?xml version="1.0" encoding="utf-8"?>
<!--For more information on using transformations see the web.config examples at http://go.microsoft.com/fwlink/?LinkId=214134. -->
<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
	<appSettings>
		<add key="test20180423" value="3" xdt:Transform="Insert" />
		<add key="test20180424" value="4" xdt:Transform="Insert" />
	</appSettings>
</configuration>

Incorrect condition?

Hi there

Check it out
Source web.config

<configuration>  
  <appSettings>
    <add key="MyService.Api" value="0" />
  </appSettings>  
</configuration>

Target web.config

<configuration>  
  <appSettings>
    <add key="MyService.Api" value="1" />
    <add key="MyService.Api" value="2" />    
  </appSettings>  
</configuration>

Transformation

<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
  <appSettings>
    <add xdt:Locator="Condition([(@value='1')])" value="1" xdt:Transform="SetAttributes(value)" />
    <add key="MyService.Api" value="2" xdt:Transform="Insert" />
  </appSettings>
</configuration>

What gives us the next result

<configuration>  
  <appSettings>
    <add key="MyService.Api" value="0" />
  <add key="MyService.Api" value="2" /></appSettings>  
</configuration>

Should not the condition to be xdt:Locator="Condition([(@value='0')])"?

Wrong patch file generated when the attribute has xml namespace

I have the following source file and target file
1.source file

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <runtime>
    <assemblyBinding>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
</configuration>

2.target file

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Data.Edm" publicKeyToken="31BF3856AD364E35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.6.4.0" newVersion="5.6.4.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
</configuration>

3.when I generated the patch file,I got this

<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1" xdt:Transform="SetAttributes(xmlns)">
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Data.Edm" publicKeyToken="31BF3856AD364E35" xdt:Transform="SetAttributes(name,publicKeyToken)" />
        <bindingRedirect oldVersion="0.0.0.0-5.6.4.0" newVersion="5.6.4.0" xdt:Transform="Replace" xmlns="urn:schemas-microsoft-com:asm.v1" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
</configuration>

4.After applying the patch to source file,I got nothing. The base.xml keep the same as before.

Error when creating Transformed File

Microsoft.Web.XmlTransform.XmlNodeException: 'No element in the source document matches '/configuration/runtime/assemblyBinding/dependentAssembly[27]''

Inner Exception:
XmlTransformationException: No element in the source document matches '/configuration/runtime/assemblyBinding/dependentAssembly[27]

Rename the file extension from .txt to .config and try running the app against the files with the option to generate the transformed file.
Files :
old.txt
new.txt

Error Screenshot :
image

Case error in generated XDT

I have a target file with the following

...
</connectionStrings>
  <location path="." inheritInChildApplications="false">
...

The generated XDT contains the following:

...
<location path="." inheritInChildApplications="false" xdt:Transform="InsertAfter(/configuration/connectionstrings)">
...

Upon attempting to apply the XDT, it fails due to the casing of connectionstrings.

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