<p>This adds a source_tree method (and helper methods) to Schema.pm returning details about the dependencies between sources in a schema.</p>

<p>A test is included and the todo's in <br><a href="https://github.com/dbsrgits/dbix-class/blob/topic/factor-out-source-tree/TO_MERGE">https://github.com/dbsrgits/dbix-class/blob/topic/factor-out-source-tree/TO_MERGE</a><br>
have (hopefully) all been implemented. </p>

<p>Please check if the "hard" attribute for relations is set as intended.</p>

<hr>

<h4>You can merge this Pull Request by running</h4>
<pre>  git pull https://github.com/joseds/dbix-class topic/determine_source_tree</pre>
<p>Or view, comment on, or merge it at:</p>
<p>&nbsp;&nbsp;<a href='https://github.com/dbsrgits/dbix-class/pull/26'>https://github.com/dbsrgits/dbix-class/pull/26</a></p>

<h4>Commit Summary</h4>
<ul>
  <li>added extended version of source_tree method and test for it</li>
</ul>

<h4>File Changes</h4>
<ul>
  <li>
    <strong>M</strong>
    <a href="https://github.com/dbsrgits/dbix-class/pull/26/files#diff-0">lib/DBIx/Class/Schema.pm</a>
    (252)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/dbsrgits/dbix-class/pull/26/files#diff-1">t/schema/source-tree.t</a>
    (718)
  </li>
</ul>

<h4>Patch Links:</h4>
<ul>
  <li><a href='https://github.com/dbsrgits/dbix-class/pull/26.patch'>https://github.com/dbsrgits/dbix-class/pull/26.patch</a></li>
  <li><a href='https://github.com/dbsrgits/dbix-class/pull/26.diff'>https://github.com/dbsrgits/dbix-class/pull/26.diff</a></li>
</ul>