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<!doctype html>
<html lang="en">
<head>
<title>Ebean ORM for Java & Kotlin</title>
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<body>
<div id="main">
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<header>
<nav id="top">
<ul>
<li><a href="/"><span class="fas fa-home"></span> Home</a></li>
<li><a href="/docs">Docs</a></li>
<li><a href="/docs/getting-started">Get Started</a></li>
<li><a href="/support">Help</a></li>
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<li><a target="_blank" href="/apidoc/13">ApiDocs</a></li>
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<article id="home-article">
<section>
<h3>Search documentation</h3>
<div id="nav-search">
<form action="https://www.google.com/search" method="get" class="inline-form">
<input type="hidden" name="as_sitesearch" value="ebean.io">
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<input class="frm" name="q" id="searchinput" type="text" placeholder="Search... (press 's' to focus)" data-placeholder-focus="Search... (use '↑', '↓' and '⏎' to select results)" data-placeholder-blur="Search... (press 's' to focus)" autocomplete="off">
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<ul id="search-results-container" class="search-results"><li class=" active"><a href="/docs" title="Docs"><span style="color:#777;">Docs</span> Documentation </a></li><li class=""><small style="color:#999;">And 101 more...</small></li></ul>
</div>
</div>
</form>
</div>
</section>
<div id="hero">
<h1><img src="/images/logo-200.png" width="120"> Ebean ORM</h1>
<h2>Persistence for Java & Kotlin</h2>
<div class="links">
<h4><a class="bright-link" href="/docs/getting-started"><i class="fas fa-angle-right"></i> Getting started</a></h4>
<h4><a href="/docs"><i class="fas fa-angle-right"></i> Documentation</a></h4>
<h4><a href="https://github.com/ebean-orm"><i class="fas fa-angle-right"></i> Github</a></h4>
</div>
<div id="sponsors">
<h4 class="mtx"><a href="/sponsors">premium sponsors</a></h4>
<a class="sponsor" href="https://nedap.com/"><img width="170" src="/images/logo-nedap.png"></a>
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</div>
</div>
<section class="grid g3 mtx">
<div class="col-md-4">
<h3>Databases supported</h3>
<p>
<a href="/docs/database/h2">H2</a>,
<a href="/docs/database/postgres">Postgres</a>,
<a href="/docs/database/mysql">MySql</a>,
<a href="/docs/database/nuodb">NuoDB</a>,
<a href="/docs/database/postgres/postgis">PostGIS</a>,
<a href="/docs/database/mariadb">MariaDB</a>,
<a href="/docs/database/sqlserver">SQL Server</a>,
<a href="/docs/database/oracle">Oracle</a>,
<a href="/docs/database/hana">SAP Hana</a>,
<a href="/docs/database/cockroach">CockroachDB</a>,
<a href="/docs/database/clickhouse">Clickhouse</a>,
<a href="/docs/database/sqlite">Sqlite</a>.
</p>
</div>
<div class="col-md-4">
<h3>Multiple abstraction levels</h3>
<p>
Ebean provides multiple levels of query abstraction.
</p>
<ul>
<li><a href="/docs/intro/queries/orm-query">ORM Queries, mixed with SQL</a></li>
<li><a href="/docs/intro/queries/dto-query">DTO Queries</a></li>
<li><a href="/docs/intro/queries/sql-query">SqlQuery and JDBC</a></li>
</ul>
<p>
Work at the highest level of abstraction and drop down levels as needed.
</p>
</div>
<div class="col-md-4">
<h3>Benefits of ORM</h3>
<ul>
<li>Automatically avoid N+1</li>
<li>L2 caching to reduce database load</li>
<li>Queries mixing database and L2 cache</li>
<li>Automatically tune ORM queries</li>
<li>Elasticsearch for search or L3 cache.</li>
</ul>
</div>
<div class="col-md-4">
<h3>Docker test containers</h3>
<p>
<a href="/docs/testing">Docker test containers</a> for all the supported databases.
</p>
<p>
Get 100% test coverage on all the features of the database we use.
</p>
</div>
<div class="col-md-4">
<h3>Database migrations</h3>
<p>
Built in <a href="/docs/db-migrations">DB migration</a> generation and running.
</p>
<p>
Support for "rebase" migrations as well as repeatable, init and 'normal' migrations.
</p>
</div>
<div class="col-md-4">
<h3>Type safe queries</h3>
<p>
We can build queries using type safe <a href="/docs/query/query-beans">query beans</a>.
<p>
<p>
IDE auto-complete when writing queries, compile time checking and it's FUN.
</p>
</div>
<div class="col-md-4">
<h3>Automated query tuning</h3>
<p>
For ORM queries Ebean can profile the object graph being used and either
<a href="/docs/query/background/autotune">automatically tune the query</a>.
</p>
</div>
<div class="col-md-4">
<h3>Awesome SQL</h3>
<p>
Ebean produces SQL that you would hand craft yourself.
</p>
<p>
Use great SQL, never generate SQL cartesian product, always honor relational limit/offset.
</p>
</div>
<div class="col-md-4">
<h3>Performance isn't optional</h3>
<p>
<a href="/docs/query/fetchgroup">Optimise queries</a> to only fetch what we need (partial objects).
</p>
<p>
Automatically avoid N+1 via a smart load context.
</p>
</div>
</section>
<section class="mtx" style="text-align: center;">
<h4><a href="/sponsors">silver sponsors</a></h4>
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<span class="avatar-name">Maximilian Holtzberg</span>
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<span class="avatar-name">Sando Leinzinger</span>
</section>
<p class="mtx"> </p>
<h2>About Ebean</h2>
<section class="grid g2 summary">
<aside>
<h3>JPA Mapping</h3>
<p>
Ebean uses JPA mapping annotations.
</p>
<p>
Extra mappings ebean provides include:<br>
<a href="/docs/mapping/extensions/dbjson">@DbJson</a>,
<a href="/docs/mapping/extensions/dbarray">@DbArray</a>,
<a href="/docs/mapping/extensions/dbpartition">@DbPartition</a>,
<a href="/docs/mapping/extensions/history">@History</a>,
<a href="/docs/mapping/extensions/when-modified">@WhenModified</a>,
<a href="/docs/mapping/extensions/who-modified">@WhoModified</a>,
<a href="/docs/mapping/extensions/soft-delete">@SoftDelete</a>,
<a href="/docs/mapping/extensions/encrypted">@Encrypted</a>
<a href="/docs/mapping/">more ...</a>
</p>
</aside>
<div>
<div class="syntax java"><div class="highlight"><pre><span></span><span class="nd">@Entity</span>
<span class="nd">@Table</span><span class="o">(</span><span class="nx">name</span><span class="o">=</span><span class="s">"customer"</span><span class="o">)</span>
<span class="kd">public</span> <span class="kd">class</span> <span class="nc">Customer</span> <span class="kd">extends</span> <span class="n">BaseModel</span> <span class="o">{</span>
<span class="nd">@Column</span><span class="o">(</span><span class="nx">length</span><span class="o">=</span><span class="mi">100</span><span class="o">)</span>
<span class="n">String</span> <span class="n">name</span><span class="o">;</span>
<span class="nd">@ManyToOne</span><span class="o">(</span><span class="nx">cascade</span><span class="o">=</span><span class="nx">CascadeType</span><span class="o">.</span><span class="na">ALL</span><span class="o">)</span>
<span class="n">Address</span> <span class="n">billingAddress</span><span class="o">;</span>
<span class="nd">@OneToMany</span><span class="o">(</span><span class="nx">mappedBy</span><span class="o">=</span><span class="s">"customer"</span><span class="o">)</span>
<span class="n">List</span><span class="o"><</span><span class="n">Contact</span><span class="o">></span> <span class="n">contacts</span><span class="o">;</span>
<span class="o">...</span>
</pre></div>
</div>
</div>
<aside>
<h3>Simple to use</h3>
<p>
Ebean provides a simple programming model that developers can
understand and master quickly.
</p>
</aside>
<div>
<div class="syntax java"><div class="highlight"><pre><span></span><span class="c1">// insert ...</span>
<span class="n">Customer</span> <span class="n">customer</span> <span class="o">=</span> <span class="k">new</span> <span class="n">Customer</span><span class="o">(</span><span class="s">"Joe"</span><span class="o">);</span>
<span class="n">customer</span><span class="o">.</span><span class="na">save</span><span class="o">();</span>
<span class="o">...</span>
<span class="c1">// find and update ...</span>
<span class="n">Customer</span> <span class="n">customer</span> <span class="o">=</span> <span class="n">Customer</span><span class="o">.</span><span class="na field">find</span><span class="o">.</span><span class="na">byId</span><span class="o">(</span><span class="mi">42</span><span class="o">);</span>
<span class="n">customer</span><span class="o">.</span><span class="na">setName</span><span class="o">(</span><span class="s">"Montana"</span><span class="o">);</span>
<span class="n">customer</span><span class="o">.</span><span class="na">save</span><span class="o">();</span>
</pre></div>
</div>
</div>
<aside>
<h3>Type safe queries</h3>
<p>
We can use <a href="/docs/query/query-beans">Query beans</a> to build queries in a type safe manner.
</p>
</aside>
<div>
<div class="syntax java"><div class="highlight"><pre><span></span><span class="n">List</span><span class="o"><</span><span class="n">Customer</span><span class="o">></span> <span class="n">customers</span> <span class="o">=</span>
<span class="k">new</span> <span class="n">QCustomer</span><span class="o">()</span>
<span class="o">.</span><span class="na field">name</span><span class="o">.</span><span class="na">istartsWith</span><span class="o">(</span><span class="s">"rob"</span><span class="o">)</span>
<span class="o">.</span><span class="na field">billingAddress</span><span class="o">.</span><span class="na field">city</span><span class="o">.</span><span class="na">equalTo</span><span class="o">(</span><span class="s">"Auckland"</span><span class="o">)</span>
<span class="o">.</span><span class="na">setMaxRows</span><span class="o">(</span><span class="mi">10</span><span class="o">)</span>
<span class="o">.</span><span class="na">orderBy</span><span class="o">()</span>
<span class="o">.</span><span class="na field">name</span><span class="o">.</span><span class="na">asc</span><span class="o">()</span>
<span class="o">.</span><span class="na">findList</span><span class="o">();</span>
</pre></div>
</div>
</div>
</section>
</article>
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