shard-crystal-db/api/0.5.0/DB/Driver.html
2017-12-29 20:27:57 -03:00

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<h1 class="type-name">
<span class="kind">abstract class</span> DB::Driver
</h1>
<ul class="superclass-hierarchy"><li class="superclass"><a href="../DB/Driver.html">DB::Driver</a></li><li class="superclass">Reference</li><li class="superclass">Object</li></ul>
<h2>Overview</h2>
<p>Database driver implementors must subclass <code><a href="../DB/Driver.html">Driver</a></code>,
register with a driver_name using <code><a href="../DB.html#register_driver%28driver_name%2Cdriver_class%3ADriver.class%29-class-method">DB#register_driver</a></code> and
override the factory method <code><a href="../DB/Driver.html#build_connection%28context%3AConnectionContext%29%3AConnection-instance-method">#build_connection</a></code>.</p>
<pre><code><span class="k">require</span> <span class="s">&quot;db&quot;</span>
<span class="k">class</span> <span class="t">FakeDriver</span> <span class="o"><</span> <span class="t">DB</span><span class="t">::</span><span class="t">Driver</span>
<span class="k">def</span> <span class="m">build_connection</span>(context : <span class="t">DB</span><span class="t">::</span><span class="t">ConnectionContext</span>)
<span class="t">FakeConnection</span>.<span class="k">new</span> context
<span class="k">end</span>
<span class="k">end</span>
<span class="t">DB</span>.register_driver <span class="s">&quot;fake&quot;</span>, <span class="t">FakeDriver</span></code></pre>
<p>Access to this fake datbase will be available with</p>
<pre><code><span class="t">DB</span>.open <span class="s">&quot;fake://...&quot;</span> <span class="k">do</span> <span class="o">|</span>db<span class="o">|</span>
<span class="c"># ... use db ...</span>
<span class="k">end</span></code></pre>
<p>Refer to <code><a href="../DB/Connection.html">Connection</a></code>, <code><a href="../DB/Statement.html">Statement</a></code> and <code><a href="../DB/ResultSet.html">ResultSet</a></code> for further
driver implementation instructions.</p>
<h2>Defined in:</h2>
<a href="https://github.com/crystal-lang/crystal-db/blob/be139c900c86e28b150b9808c74d2a4dd2bb913b/src/db/driver.cr#L28" target="_blank">db/driver.cr</a>
<br/>
<h2>Instance Method Summary</h2>
<ul class="list-summary">
<li class="entry-summary">
<a href="#build_connection%28context%3AConnectionContext%29%3AConnection-instance-method" class="signature"><strong>#build_connection</strong>(context : ConnectionContext) : Connection</a>
</li>
<li class="entry-summary">
<a href="#connection_pool_options%28params%3AHTTP%3A%3AParams%29-instance-method" class="signature"><strong>#connection_pool_options</strong>(params : HTTP::Params)</a>
</li>
</ul>
<div class="methods-inherited">
</div>
<h2>Instance Method Detail</h2>
<div class="entry-detail" id="build_connection(context:ConnectionContext):Connection-instance-method">
<div class="signature">
abstract
def <strong>build_connection</strong>(context : <a href="../DB/ConnectionContext.html">ConnectionContext</a>) : <a href="../DB/Connection.html">Connection</a>
<a class="method-permalink" href="#build_connection%28context%3AConnectionContext%29%3AConnection-instance-method">#</a>
</div>
<br/>
<div>
[<a href="https://github.com/crystal-lang/crystal-db/blob/be139c900c86e28b150b9808c74d2a4dd2bb913b/src/db/driver.cr#L29" target="_blank">View source</a>]
</div>
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<div class="entry-detail" id="connection_pool_options(params:HTTP::Params)-instance-method">
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def <strong>connection_pool_options</strong>(params : HTTP::Params)
<a class="method-permalink" href="#connection_pool_options%28params%3AHTTP%3A%3AParams%29-instance-method">#</a>
</div>
<br/>
<div>
[<a href="https://github.com/crystal-lang/crystal-db/blob/be139c900c86e28b150b9808c74d2a4dd2bb913b/src/db/driver.cr#L31" target="_blank">View source</a>]
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