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Add basic migrations

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This commit is contained in:
Ege Emir Özkan
2020-08-14 11:45:39 +03:00
parent a0bb5704eb
commit 2e14aeaace
19 changed files with 339 additions and 87 deletions
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55
docs/_build/html/datalite.html vendored
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@@ -36,7 +36,7 @@
<link rel="index" title="Index" href="genindex.html" />
<link rel="search" title="Search" href="search.html" />
<link rel="prev" title="datalite" href="modules.html" />
<link rel="prev" title="Welcome to Datalite’s documentation!" href="index.html" />
</head>
<body class="wy-body-for-nav">
@@ -83,12 +83,10 @@
<p class="caption"><span class="caption-text">Contents:</span></p>
<ul class="current">
<li class="toctree-l1 current"><a class="reference internal" href="modules.html">datalite</a><ul class="current">
<li class="toctree-l2 current"><a class="current reference internal" href="#">datalite package</a><ul>
<li class="toctree-l3"><a class="reference internal" href="#datalite-module">datalite Module</a></li>
<li class="toctree-l3"><a class="reference internal" href="#module-datalite.fetch">datalite.fetch module</a></li>
</ul>
</li>
<li class="toctree-l1 current"><a class="current reference internal" href="#">datalite package</a><ul>
<li class="toctree-l2"><a class="reference internal" href="#datalite-module">datalite Module</a></li>
<li class="toctree-l2"><a class="reference internal" href="#module-datalite.fetch">datalite.fetch module</a></li>
<li class="toctree-l2"><a class="reference internal" href="#module-datalite.migrations">datalite.migrations module</a></li>
</ul>
</li>
</ul>
@@ -137,8 +135,6 @@
<li><a href="index.html" class="icon icon-home"></a> &raquo;</li>
<li><a href="modules.html">datalite</a> &raquo;</li>
<li>datalite package</li>
@@ -196,10 +192,10 @@
</ul>
</dd>
<dt class="field-even">Returns</dt>
<dd class="field-even"><p>All the records of type <a href="#id1"><span class="problematic" id="id2">class_</span></a> in</p>
<dd class="field-even"><p>All the records of type <a href="#id1"><span class="problematic" id="id2">class_</span></a> in
the bound database as a tuple.</p>
</dd>
</dl>
<p>the bound database as a tuple.</p>
</dd></dl>
<dl class="py function">
@@ -252,10 +248,10 @@ provided they fit the given condition</p>
</ul>
</dd>
<dt class="field-even">Returns</dt>
<dd class="field-even"><p>A tuple of records that fit the given condition</p>
<dd class="field-even"><p>A tuple of records that fit the given condition
of given type <a href="#id9"><span class="problematic" id="id10">class_</span></a>.</p>
</dd>
</dl>
<p>of given type <a href="#id9"><span class="problematic" id="id10">class_</span></a>.</p>
</dd></dl>
<dl class="py function">
@@ -270,10 +266,10 @@ provided they fit the given condition</p>
</ul>
</dd>
<dt class="field-even">Returns</dt>
<dd class="field-even"><p>A tuple of <a href="#id11"><span class="problematic" id="id12">class_</span></a> type objects whose values</p>
<dd class="field-even"><p>A tuple of <a href="#id11"><span class="problematic" id="id12">class_</span></a> type objects whose values
come from the <a href="#id13"><span class="problematic" id="id14">class_</span></a>’ bound database.</p>
</dd>
</dl>
<p>come from the <a href="#id13"><span class="problematic" id="id14">class_</span></a>’ bound database.</p>
</dd></dl>
<dl class="py function">
@@ -316,6 +312,33 @@ given value.</p>
</dl>
</dd></dl>
</div>
<div class="section" id="module-datalite.migrations">
<span id="datalite-migrations-module"></span><h2>datalite.migrations module<a class="headerlink" href="#module-datalite.migrations" title="Permalink to this headline"></a></h2>
<p>Migrations module deals with migrating data when the object
definitions change. This functions deal with Schema Migrations.</p>
<dl class="py function">
<dt id="datalite.migrations.basic_migrate">
<code class="sig-prename descclassname">datalite.migrations.</code><code class="sig-name descname">basic_migrate</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">class_</span><span class="p">:</span> <span class="n">type</span></em>, <em class="sig-param"><span class="n">column_transfer</span><span class="p">:</span> <span class="n">dict</span> <span class="o">=</span> <span class="default_value">None</span></em><span class="sig-paren">)</span> &#x2192; None<a class="headerlink" href="#datalite.migrations.basic_migrate" title="Permalink to this definition"></a></dt>
<dd><p>Given a class, compare its previous table,
delete the fields that no longer exist,
create new columns for new fields. If the
column_flow parameter is given, migrate elements
from previous column to the new ones.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>class</strong> – Datalite class to migrate.</p></li>
<li><p><strong>column_transfer</strong> – A dictionary showing which
columns will be copied to new ones.</p></li>
</ul>
</dd>
<dt class="field-even">Returns</dt>
<dd class="field-even"><p>None.</p>
</dd>
</dl>
</dd></dl>
</div>
</div>
@@ -328,7 +351,7 @@ given value.</p>
<div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
<a href="modules.html" class="btn btn-neutral float-left" title="datalite" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> Previous</a>
<a href="index.html" class="btn btn-neutral float-left" title="Welcome to Datalite’s documentation!" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> Previous</a>
</div>