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https://issues.apache.org/jira/browse/LUCENENET-638?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shad Storhaug resolved LUCENENET-638.
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Resolution: Fixed
Fixed @ GitHub: https://github.com/apache/lucenenet/issues/254
> Finish implementation of "System Properties" for .NET
> -----------------------------------------------------
>
> Key: LUCENENET-638
> URL: https://issues.apache.org/jira/browse/LUCENENET-638
> Project: Lucene.Net
> Issue Type: Task
> Components: Lucene.Net.TestFramework
> Affects Versions: Lucene.Net 4.8.0
> Reporter: Shad Storhaug
> Priority: Major
> Labels: help-requested, up-for-grabs
> Original Estimate: 20h
> Remaining Estimate: 20h
>
> In Java, [System
> Properties|https://docs.oracle.com/javase/tutorial/essential/environment/sysprop.html]
> are file based properties that can be overridden by for the specific
> environment (environment variables).
> To implement similar functionality in .NET, we have added the
> {{Lucene.Net.Support.SystemProperties}} class, which currently just
> reads/writes environment variables.
> With the release of the TestFramework, it is now more important to have
> Hierarchical file configuration based properties that can be utilized in test
> projects in order to control the features of the TestFramework. They should
> also still be able to be specified as environment variables that override the
> file-based settings.
> We should use a JSON-based file format, ideally following an existing
> convention in .NET.
> The closest match in .NET Core appears to be the
> [Microsoft.Extensions.Configuration
> API|https://docs.microsoft.com/en-us/aspnet/core/fundamentals/configuration/index].
> We need to investigate using this API as a replacement for
> {{Lucene.Net.Support.SystemProperties}}, and come up with a read-write
> hierarchical file-based configuration solution that can be overridden by
> environment variables on any platform.
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