How to compare value to any values (multiple values/items)?

[Denis535]

I have the values and keys. The values are pointing on keys.

<ItemGroup>
    <Key Include="0" />
    <Key Include="3" />
</ItemGroup>

<ItemGroup>
    <Val Include="A0" Key="0" />
    <Val Include="A1" Key="0" />
    <Val Include="B"  Key="1" />
    <Val Include="C"  Key="2" />
    <Val Include="D0" Key="3" />
    <Val Include="D1" Key="3" />
</ItemGroup>

I need to filter values which are pointing on the any key in my list. But none of the following methods works ((

<Message Text="@(Val->WithMetadataValue( 'Key', %(Key.Identity) ))" Importance="high" />
<Message Text="@(Val)" Condition="%(Val.Key) == %(Key.Identity)" Importance="high" />
<Message Text="@(Val)" Condition="@(Key->AnyHaveMetadataValue( 'Identity', %(Val.Key) ) )" Importance="high" />

Is it possible to do it?

[Denis535]

Why does the last line not work? AnyHaveMetadataValue looks like the right function for my case.

[Denis535]

Function can not accept %(...) syntax. So, you need a temporary property and target batching.

<Target Name="Tmp" AfterTargets="AfterBuild" Outputs="%(Key.Identity)">
    <PropertyGroup>
        <Key>%(Key.Identity)</Key>
    </PropertyGroup>
    <Message Text="%(Key.Identity): @(Val->WithMetadataValue( 'Key', $(Key) ))" Importance="high" />
</Target>

<Target Name="Tmp2" AfterTargets="AfterBuild" Outputs="%(Val.Identity)">
    <PropertyGroup>
        <Val_Key>%(Val.Key)</Val_Key>
    </PropertyGroup>
    <Message Text="%(Val.Identity): %(Val.Key)" Condition="@(Key->AnyHaveMetadataValue( 'Identity', $(Val_Key) ))" Importance="high" />
</Target>

Is there a better way?

[Denis535]

We need a function WithAnyMetadataValue.