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| <title>2. Executing a CriteriaQuery</title><base href="display"><link rel="stylesheet" type="text/css" href="css/docbook.css"><meta name="generator" content="DocBook XSL Stylesheets V1.79.1"><link rel="home" href="manual.html" title="Apache OpenJPA 2.4 User's Guide"><link rel="up" href="jpa_overview_criteria.html" title="Chapter 11. JPA Criteria"><link rel="prev" href="jpa_overview_criteria.html" title="Chapter 11. JPA Criteria"><link rel="next" href="ch13s03.html" title="3. Extension to Criteria API"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">2. Executing a CriteriaQuery</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="jpa_overview_criteria.html">Prev</a> </td><th width="60%" align="center">Chapter 11. |
| JPA Criteria |
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| |
| <p> |
| A CriteriaQuery is executed in a similar fashion to a string-based JPQL |
| query via the EntityManager and Query interfaces. |
| </p><pre class="programlisting"> |
| EntityManager em = ... |
| Query query = em.createQuery(qdef); |
| List result = query.getResultList(); |
| </pre><p> |
| </p> |
| <p> |
| A query definition can use named parameters, and the parameter values are |
| set as usual in the Query instance. |
| </p> |
| |
| <p> |
| <a class="ulink" href="http://www.ibm.com/developerworks/java/library/j-typesafejpa/" target="_top">A developerworks article</a> |
| explains details and further usage of Criteria API and its OpenJPA extensions. |
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| JPA Criteria |
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