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POjava.nio.Path relativize between Paths does assumptions, which I cannot check
 

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    <p>I am using the new Path object of java 7 and I am running into an issue.</p> <p>I have a file storage system with a base directory and I create my own relative path. In the end I want to store just this relative path somewhere. I am running into a problem with Path.relativize though.</p> <p>I have two usecases. 1.</p> <pre><code>Path baseDir = Paths.get("uploads"); Path filename = Paths.get("uploads/image/test.png") return baseDir.relativize(filename); </code></pre> <p>This returns a Path <code>image/test.png</code>, which is perfect.</p> <p>However, usecase 2:</p> <pre><code>Path baseDir = Paths.get("uploads"); Path filename = Paths.get("image/test.png") return baseDir.relativize(filename); </code></pre> <p>returns <code>../image/test.png</code>. I just want it to return "image/test.png"</p> <p>In the <a href="http://docs.oracle.com/javase/tutorial/essential/io/pathOps.html#relativize" rel="nofollow">Path tutorial</a> it says </p> <blockquote> <p>In the absence of any other information, it is assumed that 2 Paths are siblings</p> </blockquote> <p>What I want is to be able to detect that this is the case. In this case, I want to just return the filename and ignore the baseDir.</p> <p>I currently solve it like this, but I was hoping there was a better way:</p> <pre><code>Path rootEnding = getRootDirectory().getName(getRootDirectory().getNameCount() - 1); for (Path part : path) { if (part.equals(rootEnding)) { return getRootDirectory().relativize(path); } } return path; </code></pre> <p>So my question is, is there any better way of checking this?</p>
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