mirror of
https://gitea.invidious.io/iv-org/shard-crystal-db.git
synced 2024-08-15 00:53:32 +00:00
290 lines
12 KiB
HTML
290 lines
12 KiB
HTML
<!DOCTYPE html>
|
|
<html lang="en">
|
|
<head>
|
|
<meta charset="utf-8" />
|
|
<meta id="repository-name" content="github.com/crystal-lang/crystal-db">
|
|
<link href="css/style.css" rel="stylesheet" type="text/css" />
|
|
<script type="text/javascript" src="js/doc.js"></script>
|
|
<title>README - github.com/crystal-lang/crystal-db</title>
|
|
</head>
|
|
<body>
|
|
|
|
<div id="types-list">
|
|
<div id="search-box">
|
|
<input type="search" id="search-input" placeholder="Search...">
|
|
</div>
|
|
|
|
<ul>
|
|
<li class="current"><a href="index.html">README</a></li>
|
|
</ul>
|
|
|
|
<ul>
|
|
|
|
<li class="parent " data-id="github.com/crystal-lang/crystal-db/DB" data-name="db">
|
|
<a href="DB.html">DB</a>
|
|
|
|
<ul>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Any" data-name="db::any">
|
|
<a href="DB/Any.html">Any</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/BeginTransaction" data-name="db::begintransaction">
|
|
<a href="DB/BeginTransaction.html">BeginTransaction</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Connection" data-name="db::connection">
|
|
<a href="DB/Connection.html">Connection</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/ConnectionContext" data-name="db::connectioncontext">
|
|
<a href="DB/ConnectionContext.html">ConnectionContext</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/ConnectionLost" data-name="db::connectionlost">
|
|
<a href="DB/ConnectionLost.html">ConnectionLost</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/ConnectionRefused" data-name="db::connectionrefused">
|
|
<a href="DB/ConnectionRefused.html">ConnectionRefused</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Database" data-name="db::database">
|
|
<a href="DB/Database.html">Database</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Disposable" data-name="db::disposable">
|
|
<a href="DB/Disposable.html">Disposable</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Driver" data-name="db::driver">
|
|
<a href="DB/Driver.html">Driver</a>
|
|
|
|
</li>
|
|
|
|
<li class="parent " data-id="github.com/crystal-lang/crystal-db/DB/DriverSpecs" data-name="db::driverspecs(dbanytype)">
|
|
<a href="DB/DriverSpecs.html">DriverSpecs</a>
|
|
|
|
<ul>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/DriverSpecs/ColumnDef" data-name="db::driverspecs::columndef">
|
|
<a href="DB/DriverSpecs/ColumnDef.html">ColumnDef</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Error" data-name="db::error">
|
|
<a href="DB/Error.html">Error</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/ExecResult" data-name="db::execresult">
|
|
<a href="DB/ExecResult.html">ExecResult</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Mappable" data-name="db::mappable">
|
|
<a href="DB/Mappable.html">Mappable</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/MappingException" data-name="db::mappingexception">
|
|
<a href="DB/MappingException.html">MappingException</a>
|
|
|
|
</li>
|
|
|
|
<li class="parent " data-id="github.com/crystal-lang/crystal-db/DB/Pool" data-name="db::pool(t)">
|
|
<a href="DB/Pool.html">Pool</a>
|
|
|
|
<ul>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Pool/TimeoutHelper" data-name="db::pool::timeouthelper">
|
|
<a href="DB/Pool/TimeoutHelper.html">TimeoutHelper</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/PoolPreparedStatement" data-name="db::poolpreparedstatement">
|
|
<a href="DB/PoolPreparedStatement.html">PoolPreparedStatement</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/PoolRetryAttemptsExceeded" data-name="db::poolretryattemptsexceeded">
|
|
<a href="DB/PoolRetryAttemptsExceeded.html">PoolRetryAttemptsExceeded</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/PoolStatement" data-name="db::poolstatement">
|
|
<a href="DB/PoolStatement.html">PoolStatement</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/PoolTimeout" data-name="db::pooltimeout">
|
|
<a href="DB/PoolTimeout.html">PoolTimeout</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/PoolUnpreparedStatement" data-name="db::poolunpreparedstatement">
|
|
<a href="DB/PoolUnpreparedStatement.html">PoolUnpreparedStatement</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/QueryMethods" data-name="db::querymethods">
|
|
<a href="DB/QueryMethods.html">QueryMethods</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/ResultSet" data-name="db::resultset">
|
|
<a href="DB/ResultSet.html">ResultSet</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Rollback" data-name="db::rollback">
|
|
<a href="DB/Rollback.html">Rollback</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/SavePointTransaction" data-name="db::savepointtransaction">
|
|
<a href="DB/SavePointTransaction.html">SavePointTransaction</a>
|
|
|
|
</li>
|
|
|
|
<li class="parent " data-id="github.com/crystal-lang/crystal-db/DB/SessionMethods" data-name="db::sessionmethods(session, stmt)">
|
|
<a href="DB/SessionMethods.html">SessionMethods</a>
|
|
|
|
<ul>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/SessionMethods/PreparedQuery" data-name="db::sessionmethods::preparedquery(session, stmt)">
|
|
<a href="DB/SessionMethods/PreparedQuery.html">PreparedQuery</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/SessionMethods/UnpreparedQuery" data-name="db::sessionmethods::unpreparedquery(session, stmt)">
|
|
<a href="DB/SessionMethods/UnpreparedQuery.html">UnpreparedQuery</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Statement" data-name="db::statement">
|
|
<a href="DB/Statement.html">Statement</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/StatementMethods" data-name="db::statementmethods">
|
|
<a href="DB/StatementMethods.html">StatementMethods</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/StringKeyCache" data-name="db::stringkeycache(t)">
|
|
<a href="DB/StringKeyCache.html">StringKeyCache</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/TopLevelTransaction" data-name="db::topleveltransaction">
|
|
<a href="DB/TopLevelTransaction.html">TopLevelTransaction</a>
|
|
|
|
</li>
|
|
|
|
<li class=" " data-id="github.com/crystal-lang/crystal-db/DB/Transaction" data-name="db::transaction">
|
|
<a href="DB/Transaction.html">Transaction</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
</div>
|
|
|
|
<div id="main-content">
|
|
<p><a href="https://travis-ci.org/crystal-lang/crystal-db" target="_blank"><img src="https://travis-ci.org/crystal-lang/crystal-db.svg?branch=master" alt="Build Status"/></a></p>
|
|
|
|
<h1>crystal-db</h1>
|
|
|
|
<p>Common db api for crystal. You will need to a specific driver to access a database.</p>
|
|
|
|
<ul><li><a href="https://github.com/crystal-lang/crystal-sqlite3" target="_blank">sqlite</a></li><li><a href="https://github.com/crystal-lang/crystal-mysql" target="_blank">mysql</a></li><li><a href="https://github.com/will/crystal-pg" target="_blank">postgres</a></li></ul>
|
|
|
|
<h2>Installation</h2>
|
|
|
|
<p>Add this to your application's <code>shard.yml</code>:</p>
|
|
|
|
<pre><code class='language-yaml'>dependencies:
|
|
db:
|
|
github: crystal-lang/crystal-db</code></pre>
|
|
|
|
<h2>Documentation</h2>
|
|
|
|
<ul><li><a href="http://crystal-lang.github.io/crystal-db/api/latest/" target="_blank">Latest API</a></li><li><a href="https://crystal-lang.org/docs/database/" target="_blank">Crystal book</a></li></ul>
|
|
|
|
<h2>Usage</h2>
|
|
|
|
<p>Since this is an abstract db api, it's usage is through a concrete database driver.</p>
|
|
|
|
<pre><code class='language-crystal'><span class="k">require</span> <span class="s">"db"</span>
|
|
<span class="k">require</span> <span class="s">"sqlite3"</span>
|
|
|
|
<span class="t">DB</span>.open <span class="s">"sqlite3:./file.db"</span> <span class="k">do</span> <span class="o">|</span>db<span class="o">|</span>
|
|
<span class="c"># When using the pg driver, use $1, $2, etc. instead of ?</span>
|
|
db.exec <span class="s">"create table contacts (name text, age integer)"</span>
|
|
db.exec <span class="s">"insert into contacts values (?, ?)"</span>, <span class="s">"John Doe"</span>, <span class="n">30</span>
|
|
|
|
args <span class="o">=</span> <span class="o">[]</span> <span class="k">of</span> <span class="t">DB</span><span class="t">::</span><span class="t">Any</span>
|
|
args <span class="o"><<</span> <span class="s">"Sarah"</span>
|
|
args <span class="o"><<</span> <span class="n">33</span>
|
|
db.exec <span class="s">"insert into contacts values (?, ?)"</span>, args
|
|
|
|
puts <span class="s">"max age:"</span>
|
|
puts db.scalar <span class="s">"select max(age) from contacts"</span> <span class="c"># => 33</span>
|
|
|
|
puts <span class="s">"contacts:"</span>
|
|
db.query <span class="s">"select name, age from contacts order by age desc"</span> <span class="k">do</span> <span class="o">|</span>rs<span class="o">|</span>
|
|
puts <span class="s">"</span><span class="i">#{</span></span>rs.column_name(<span class="n">0</span>)<span class="s"><span class="i">}</span> (</span><span class="i">#{</span></span>rs.column_name(<span class="n">1</span>)<span class="s"><span class="i">}</span>)"</span>
|
|
<span class="c"># => name (age)</span>
|
|
rs.each <span class="k">do</span>
|
|
puts <span class="s">"</span><span class="i">#{</span></span>rs.read(<span class="t">String</span>)<span class="s"><span class="i">}</span> (</span><span class="i">#{</span></span>rs.read(<span class="t">Int32</span>)<span class="s"><span class="i">}</span>)"</span>
|
|
<span class="c"># => Sarah (33)</span>
|
|
<span class="c"># => John Doe (30)</span>
|
|
<span class="k">end</span>
|
|
<span class="k">end</span>
|
|
<span class="k">end</span></code></pre>
|
|
|
|
<h2>Roadmap</h2>
|
|
|
|
<p>Issues not yet addressed</p>
|
|
|
|
<ul><li>[x] Support non prepared statements. <a href="https://github.com/crystal-lang/crystal-db/pull/25" target="_blank">#25</a></li><li>[x] Time data type. (implementation details depends on actual drivers)</li><li>[x] Data type extensibility. Allow each driver to extend the data types allowed.</li><li>[x] Transactions & nested transactions. <a href="https://github.com/crystal-lang/crystal-db/pull/27" target="_blank">#27</a></li><li>[x] Connection pool.</li><li>[ ] Direct access to <code>IO</code> to avoid memory allocation for blobs.</li></ul>
|
|
|
|
<h2>Contributing</h2>
|
|
|
|
<ol><li>Fork it ( https://github.com/crystal-lang/crystal-db/fork )</li><li>Create your feature branch (git checkout -b my-new-feature)</li><li>Commit your changes (git commit -am 'Add some feature')</li><li>Push to the branch (git push origin my-new-feature)</li><li>Create a new Pull Request</li></ol>
|
|
|
|
<h2>Contributors</h2>
|
|
|
|
<ul><li><a href="https://github.com/bcardiff" target="_blank">bcardiff</a> Brian J. Cardiff - creator, maintainer</li></ul>
|
|
</div>
|
|
</body>
|
|
</html>
|