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               <h1>Using EnvEntries</h1>
             </div>
           </div>
         </div>
         <div class="row">

             <div class="col-md-12">
                 <p>The <code>@Resource</code> annotation can be used to inject several things including DataSources, Topics, Queues, etc. Most of these are container supplied objects.</p>
 <p>It is possible, however, to supply your own values to be injected via an <code>&lt;env-entry&gt;</code> in your <code>ejb-jar.xml</code> or <code>web.xml</code> deployment descriptor. Java EE 6 supported <code>&lt;env-entry&gt;</code> types are limited to the following:</p>
 <ul>
   <li>java.lang.String</li>
   <li>java.lang.Integer</li>
   <li>java.lang.Short</li>
   <li>java.lang.Float</li>
   <li>java.lang.Double</li>
   <li>java.lang.Byte</li>
   <li>java.lang.Character</li>
   <li>java.lang.Boolean</li>
   <li>java.lang.Class</li>
   <li>java.lang.Enum (any enum)</li>
 </ul>
 <p>See also the <a href="../custom-injection">Custom Injection</a> exmaple for a TomEE and OpenEJB feature that will let you use more than just the above types as well as declare <code>&lt;env-entry&gt;</code> items with a plain properties file.</p>
 <h1>Using @Resource for basic properties</h1>
 <p>The use of the <code>@Resource</code> annotation isn't limited to setters. For example, this annotation could have been used on the corresponding <em>field</em> like so:</p>
 <pre><code>@Resource
 private int maxLineItems;
 </code></pre>
 <p>A fuller example might look like this:</p>
 <pre><code>package org.superbiz.injection.enventry;

 import javax.annotation.Resource;
 import javax.ejb.Singleton;
 import java.util.Date;

 @Singleton
 public class Configuration {

     @Resource
     private String color;

     @Resource
     private Shape shape;

     @Resource
     private Class strategy;

     @Resource(name = &quot;date&quot;)
     private long date;

     public String getColor() {
         return color;
     }

     public Shape getShape() {
         return shape;
     }

     public Class getStrategy() {
         return strategy;
     }

     public Date getDate() {
         return new Date(date);
     }
 }
 </code></pre>
 <p>Here we have an <code>@Singleton</code> bean called <code>Confuration</code> that has the following properties (<code>&lt;env-entry&gt;</code> items)</p>
 <ul>
   <li>String color</li>
   <li>Shape shape</li>
   <li>Class strategy</li>
   <li>long date</li>
 </ul>
 <h2>Supplying @Resource values for <env-entry> items in ejb-jar.xml</h2>
 <p>The values for our <code>color</code>, <code>shape</code>, <code>strategy</code> and <code>date</code> properties are supplied via <code>&lt;env-entry&gt;</code> elements in the <code>ejb-jar.xml</code> file or the<br/><code>web.xml</code> file like so:</p>
 <pre><code>&lt;ejb-jar xmlns=&quot;http://java.sun.com/xml/ns/javaee&quot; version=&quot;3.0&quot; metadata-complete=&quot;false&quot;&gt;
   &lt;enterprise-beans&gt;
     &lt;session&gt;
       &lt;ejb-name&gt;Configuration&lt;/ejb-name&gt;
       &lt;env-entry&gt;
         &lt;env-entry-name&gt;org.superbiz.injection.enventry.Configuration/color&lt;/env-entry-name&gt;
         &lt;env-entry-type&gt;java.lang.String&lt;/env-entry-type&gt;
         &lt;env-entry-value&gt;orange&lt;/env-entry-value&gt;
       &lt;/env-entry&gt;
       &lt;env-entry&gt;
         &lt;env-entry-name&gt;org.superbiz.injection.enventry.Configuration/shape&lt;/env-entry-name&gt;
         &lt;env-entry-type&gt;org.superbiz.injection.enventry.Shape&lt;/env-entry-type&gt;
         &lt;env-entry-value&gt;TRIANGLE&lt;/env-entry-value&gt;
       &lt;/env-entry&gt;
       &lt;env-entry&gt;
         &lt;env-entry-name&gt;org.superbiz.injection.enventry.Configuration/strategy&lt;/env-entry-name&gt;
         &lt;env-entry-type&gt;java.lang.Class&lt;/env-entry-type&gt;
         &lt;env-entry-value&gt;org.superbiz.injection.enventry.Widget&lt;/env-entry-value&gt;
       &lt;/env-entry&gt;
       &lt;env-entry&gt;
         &lt;description&gt;The name was explicitly set in the annotation so the classname prefix isn&#39;t required&lt;/description&gt;
         &lt;env-entry-name&gt;date&lt;/env-entry-name&gt;
         &lt;env-entry-type&gt;java.lang.Long&lt;/env-entry-type&gt;
         &lt;env-entry-value&gt;123456789&lt;/env-entry-value&gt;
       &lt;/env-entry&gt;
     &lt;/session&gt;
   &lt;/enterprise-beans&gt;
 &lt;/ejb-jar&gt;
 </code></pre>
 <h3>Using the @Resource 'name' attribute</h3>
 <p>Note that <code>date</code> was referenced by <code>name</code> as:</p>
 <pre><code>@Resource(name = &quot;date&quot;)
 private long date;
 </code></pre>
 <p>When the <code>@Resource(name)</code> is used, you do not need to specify the full class name of the bean and can do it briefly like so:</p>
 <pre><code>  &lt;env-entry&gt;
     &lt;description&gt;The name was explicitly set in the annotation so the classname prefix isn&#39;t required&lt;/description&gt;
     &lt;env-entry-name&gt;date&lt;/env-entry-name&gt;
     &lt;env-entry-type&gt;java.lang.Long&lt;/env-entry-type&gt;
     &lt;env-entry-value&gt;123456789&lt;/env-entry-value&gt;
   &lt;/env-entry&gt;
 </code></pre>
 <p>Conversly, <code>color</code> was not referenced by <code>name</code></p>
 <pre><code>@Resource
 private String color;
 </code></pre>
 <p>When something is not referenced by <code>name</code> in the <code>@Resource</code> annotation a default name is created. The format is essentially this:</p>
 <pre><code>bean.getClass() + &quot;/&quot; + field.getName()
 </code></pre>
 <p>So the default <code>name</code> of the above <code>color</code> property ends up being <code>org.superbiz.injection.enventry.Configuration/color</code>. This is the name we must use when we attempt to decalre a value for it in xml.</p>
 <pre><code>  &lt;env-entry&gt;
     &lt;env-entry-name&gt;org.superbiz.injection.enventry.Configuration/color&lt;/env-entry-name&gt;
     &lt;env-entry-type&gt;java.lang.String&lt;/env-entry-type&gt;
     &lt;env-entry-value&gt;orange&lt;/env-entry-value&gt;
   &lt;/env-entry&gt;
 </code></pre>
 <h3>@Resource and Enum (Enumerations)</h3>
 <p>The <code>shape</code> field is actually a custom Java Enum type</p>
 <pre><code>package org.superbiz.injection.enventry;

 public enum Shape {

     CIRCLE,
     TRIANGLE,
     SQUARE
 }
 </code></pre>
 <p>As of Java EE 6, java.lang.Enum types are allowed as <code>&lt;env-entry&gt;</code> items. Declaring one in xml is done using the actual enum's class name like so:</p>
 <pre><code>      &lt;env-entry&gt;
         &lt;env-entry-name&gt;org.superbiz.injection.enventry.Configuration/shape&lt;/env-entry-name&gt;
         &lt;env-entry-type&gt;org.superbiz.injection.enventry.Shape&lt;/env-entry-type&gt;
         &lt;env-entry-value&gt;TRIANGLE&lt;/env-entry-value&gt;
       &lt;/env-entry&gt;
 </code></pre>
 <p>Do not use <code>&lt;env-entry-type&gt;java.lang.Enum&lt;/env-entry-type&gt;</code> or it will not work!</p>
 <h2>ConfigurationTest</h2>
 <pre><code>package org.superbiz.injection.enventry;

 import junit.framework.TestCase;

 import javax.ejb.embeddable.EJBContainer;
 import javax.naming.Context;
 import java.util.Date;

 public class ConfigurationTest extends TestCase {


     public void test() throws Exception {
         final Context context = EJBContainer.createEJBContainer().getContext();

         final Configuration configuration = (Configuration) context.lookup(&quot;java:global/injection-of-env-entry/Configuration&quot;);

         assertEquals(&quot;orange&quot;, configuration.getColor());

         assertEquals(Shape.TRIANGLE, configuration.getShape());

         assertEquals(Widget.class, configuration.getStrategy());

         assertEquals(new Date(123456789), configuration.getDate());
     }
 }
 </code></pre>
 <h1>Running</h1>
 <pre><code>-------------------------------------------------------
  T E S T S
 -------------------------------------------------------
 Running org.superbiz.injection.enventry.ConfigurationTest
 Apache OpenEJB 4.0.0-beta-1    build: 20111002-04:06
 http://tomee.apache.org/
 INFO - openejb.home = /Users/dblevins/examples/injection-of-env-entry
 INFO - openejb.base = /Users/dblevins/examples/injection-of-env-entry
 INFO - Using &#39;javax.ejb.embeddable.EJBContainer=true&#39;
 INFO - Configuring Service(id=Default Security Service, type=SecurityService, provider-id=Default Security Service)
 INFO - Configuring Service(id=Default Transaction Manager, type=TransactionManager, provider-id=Default Transaction Manager)
 INFO - Found EjbModule in classpath: /Users/dblevins/examples/injection-of-env-entry/target/classes
 INFO - Beginning load: /Users/dblevins/examples/injection-of-env-entry/target/classes
 INFO - Configuring enterprise application: /Users/dblevins/examples/injection-of-env-entry
 WARN - Method &#39;lookup&#39; is not available for &#39;javax.annotation.Resource&#39;. Probably using an older Runtime.
 INFO - Configuring Service(id=Default Singleton Container, type=Container, provider-id=Default Singleton Container)
 INFO - Auto-creating a container for bean Configuration: Container(type=SINGLETON, id=Default Singleton Container)
 INFO - Configuring Service(id=Default Managed Container, type=Container, provider-id=Default Managed Container)
 INFO - Auto-creating a container for bean org.superbiz.injection.enventry.ConfigurationTest: Container(type=MANAGED, id=Default Managed Container)
 INFO - Enterprise application &quot;/Users/dblevins/examples/injection-of-env-entry&quot; loaded.
 INFO - Assembling app: /Users/dblevins/examples/injection-of-env-entry
 INFO - Jndi(name=&quot;java:global/injection-of-env-entry/Configuration!org.superbiz.injection.enventry.Configuration&quot;)
 INFO - Jndi(name=&quot;java:global/injection-of-env-entry/Configuration&quot;)
 INFO - Jndi(name=&quot;java:global/EjbModule1355224018/org.superbiz.injection.enventry.ConfigurationTest!org.superbiz.injection.enventry.ConfigurationTest&quot;)
 INFO - Jndi(name=&quot;java:global/EjbModule1355224018/org.superbiz.injection.enventry.ConfigurationTest&quot;)
 INFO - Created Ejb(deployment-id=org.superbiz.injection.enventry.ConfigurationTest, ejb-name=org.superbiz.injection.enventry.ConfigurationTest, container=Default Managed Container)
 INFO - Created Ejb(deployment-id=Configuration, ejb-name=Configuration, container=Default Singleton Container)
 INFO - Started Ejb(deployment-id=org.superbiz.injection.enventry.ConfigurationTest, ejb-name=org.superbiz.injection.enventry.ConfigurationTest, container=Default Managed Container)
 INFO - Started Ejb(deployment-id=Configuration, ejb-name=Configuration, container=Default Singleton Container)
 INFO - Deployed Application(path=/Users/dblevins/examples/injection-of-env-entry)
 Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.664 sec

 Results :

 Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
 </code></pre>
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	<div id="main-block" class="container main-block">
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	<div class='page-header'>

	<h1>Using EnvEntries</h1>
	</div>
	</div>
	</div>
	<div class="row">

	<div class="col-md-12">
	<p>The <code>@Resource</code> annotation can be used to inject several things including DataSources, Topics, Queues, etc. Most of these are container supplied objects.</p>
	<p>It is possible, however, to supply your own values to be injected via an <code><env-entry></code> in your <code>ejb-jar.xml</code> or <code>web.xml</code> deployment descriptor. Java EE 6 supported <code><env-entry></code> types are limited to the following:</p>
	<ul>
	<li>java.lang.String</li>
	<li>java.lang.Integer</li>
	<li>java.lang.Short</li>
	<li>java.lang.Float</li>
	<li>java.lang.Double</li>
	<li>java.lang.Byte</li>
	<li>java.lang.Character</li>
	<li>java.lang.Boolean</li>
	<li>java.lang.Class</li>
	<li>java.lang.Enum (any enum)</li>
	</ul>
	<p>See also the <a href="../custom-injection">Custom Injection</a> exmaple for a TomEE and OpenEJB feature that will let you use more than just the above types as well as declare <code><env-entry></code> items with a plain properties file.</p>
	<h1>Using @Resource for basic properties</h1>
	<p>The use of the <code>@Resource</code> annotation isn't limited to setters. For example, this annotation could have been used on the corresponding <em>field</em> like so:</p>
	<pre><code>@Resource
	private int maxLineItems;
	</code></pre>
	<p>A fuller example might look like this:</p>
	<pre><code>package org.superbiz.injection.enventry;

	import javax.annotation.Resource;
	import javax.ejb.Singleton;
	import java.util.Date;

	@Singleton
	public class Configuration {

	@Resource
	private String color;

	@Resource
	private Shape shape;

	@Resource
	private Class strategy;

	@Resource(name = "date")
	private long date;

	public String getColor() {
	return color;
	}

	public Shape getShape() {
	return shape;
	}

	public Class getStrategy() {
	return strategy;
	}

	public Date getDate() {
	return new Date(date);
	}
	}
	</code></pre>
	<p>Here we have an <code>@Singleton</code> bean called <code>Confuration</code> that has the following properties (<code><env-entry></code> items)</p>
	<ul>
	<li>String color</li>
	<li>Shape shape</li>
	<li>Class strategy</li>
	<li>long date</li>
	</ul>
	<h2>Supplying @Resource values for <env-entry> items in ejb-jar.xml</h2>
	<p>The values for our <code>color</code>, <code>shape</code>, <code>strategy</code> and <code>date</code> properties are supplied via <code><env-entry></code> elements in the <code>ejb-jar.xml</code> file or the<br/><code>web.xml</code> file like so:</p>
	<pre><code><ejb-jar xmlns="http://java.sun.com/xml/ns/javaee" version="3.0" metadata-complete="false">
	<enterprise-beans>
	<session>
	<ejb-name>Configuration</ejb-name>
	<env-entry>
	<env-entry-name>org.superbiz.injection.enventry.Configuration/color</env-entry-name>
	<env-entry-type>java.lang.String</env-entry-type>
	<env-entry-value>orange</env-entry-value>
	</env-entry>
	<env-entry>
	<env-entry-name>org.superbiz.injection.enventry.Configuration/shape</env-entry-name>
	<env-entry-type>org.superbiz.injection.enventry.Shape</env-entry-type>
	<env-entry-value>TRIANGLE</env-entry-value>
	</env-entry>
	<env-entry>
	<env-entry-name>org.superbiz.injection.enventry.Configuration/strategy</env-entry-name>
	<env-entry-type>java.lang.Class</env-entry-type>
	<env-entry-value>org.superbiz.injection.enventry.Widget</env-entry-value>
	</env-entry>
	<env-entry>
	<description>The name was explicitly set in the annotation so the classname prefix isn't required</description>
	<env-entry-name>date</env-entry-name>
	<env-entry-type>java.lang.Long</env-entry-type>
	<env-entry-value>123456789</env-entry-value>
	</env-entry>
	</session>
	</enterprise-beans>
	</ejb-jar>
	</code></pre>
	<h3>Using the @Resource 'name' attribute</h3>
	<p>Note that <code>date</code> was referenced by <code>name</code> as:</p>
	<pre><code>@Resource(name = "date")
	private long date;
	</code></pre>
	<p>When the <code>@Resource(name)</code> is used, you do not need to specify the full class name of the bean and can do it briefly like so:</p>
	<pre><code> <env-entry>
	<description>The name was explicitly set in the annotation so the classname prefix isn't required</description>
	<env-entry-name>date</env-entry-name>
	<env-entry-type>java.lang.Long</env-entry-type>
	<env-entry-value>123456789</env-entry-value>
	</env-entry>
	</code></pre>
	<p>Conversly, <code>color</code> was not referenced by <code>name</code></p>
	<pre><code>@Resource
	private String color;
	</code></pre>
	<p>When something is not referenced by <code>name</code> in the <code>@Resource</code> annotation a default name is created. The format is essentially this:</p>
	<pre><code>bean.getClass() + "/" + field.getName()
	</code></pre>
	<p>So the default <code>name</code> of the above <code>color</code> property ends up being <code>org.superbiz.injection.enventry.Configuration/color</code>. This is the name we must use when we attempt to decalre a value for it in xml.</p>
	<pre><code> <env-entry>
	<env-entry-name>org.superbiz.injection.enventry.Configuration/color</env-entry-name>
	<env-entry-type>java.lang.String</env-entry-type>
	<env-entry-value>orange</env-entry-value>
	</env-entry>
	</code></pre>
	<h3>@Resource and Enum (Enumerations)</h3>
	<p>The <code>shape</code> field is actually a custom Java Enum type</p>
	<pre><code>package org.superbiz.injection.enventry;

	public enum Shape {

	CIRCLE,
	TRIANGLE,
	SQUARE
	}
	</code></pre>
	<p>As of Java EE 6, java.lang.Enum types are allowed as <code><env-entry></code> items. Declaring one in xml is done using the actual enum's class name like so:</p>
	<pre><code> <env-entry>
	<env-entry-name>org.superbiz.injection.enventry.Configuration/shape</env-entry-name>
	<env-entry-type>org.superbiz.injection.enventry.Shape</env-entry-type>
	<env-entry-value>TRIANGLE</env-entry-value>
	</env-entry>
	</code></pre>
	<p>Do not use <code><env-entry-type>java.lang.Enum</env-entry-type></code> or it will not work!</p>
	<h2>ConfigurationTest</h2>
	<pre><code>package org.superbiz.injection.enventry;

	import junit.framework.TestCase;

	import javax.ejb.embeddable.EJBContainer;
	import javax.naming.Context;
	import java.util.Date;

	public class ConfigurationTest extends TestCase {


	public void test() throws Exception {
	final Context context = EJBContainer.createEJBContainer().getContext();

	final Configuration configuration = (Configuration) context.lookup("java:global/injection-of-env-entry/Configuration");

	assertEquals("orange", configuration.getColor());

	assertEquals(Shape.TRIANGLE, configuration.getShape());

	assertEquals(Widget.class, configuration.getStrategy());

	assertEquals(new Date(123456789), configuration.getDate());
	}
	}
	</code></pre>
	<h1>Running</h1>
	<pre><code>-------------------------------------------------------
	T E S T S
	-------------------------------------------------------
	Running org.superbiz.injection.enventry.ConfigurationTest
	Apache OpenEJB 4.0.0-beta-1 build: 20111002-04:06
	http://tomee.apache.org/
	INFO - openejb.home = /Users/dblevins/examples/injection-of-env-entry
	INFO - openejb.base = /Users/dblevins/examples/injection-of-env-entry
	INFO - Using 'javax.ejb.embeddable.EJBContainer=true'
	INFO - Configuring Service(id=Default Security Service, type=SecurityService, provider-id=Default Security Service)
	INFO - Configuring Service(id=Default Transaction Manager, type=TransactionManager, provider-id=Default Transaction Manager)
	INFO - Found EjbModule in classpath: /Users/dblevins/examples/injection-of-env-entry/target/classes
	INFO - Beginning load: /Users/dblevins/examples/injection-of-env-entry/target/classes
	INFO - Configuring enterprise application: /Users/dblevins/examples/injection-of-env-entry
	WARN - Method 'lookup' is not available for 'javax.annotation.Resource'. Probably using an older Runtime.
	INFO - Configuring Service(id=Default Singleton Container, type=Container, provider-id=Default Singleton Container)
	INFO - Auto-creating a container for bean Configuration: Container(type=SINGLETON, id=Default Singleton Container)
	INFO - Configuring Service(id=Default Managed Container, type=Container, provider-id=Default Managed Container)
	INFO - Auto-creating a container for bean org.superbiz.injection.enventry.ConfigurationTest: Container(type=MANAGED, id=Default Managed Container)
	INFO - Enterprise application "/Users/dblevins/examples/injection-of-env-entry" loaded.
	INFO - Assembling app: /Users/dblevins/examples/injection-of-env-entry
	INFO - Jndi(name="java:global/injection-of-env-entry/Configuration!org.superbiz.injection.enventry.Configuration")
	INFO - Jndi(name="java:global/injection-of-env-entry/Configuration")
	INFO - Jndi(name="java:global/EjbModule1355224018/org.superbiz.injection.enventry.ConfigurationTest!org.superbiz.injection.enventry.ConfigurationTest")
	INFO - Jndi(name="java:global/EjbModule1355224018/org.superbiz.injection.enventry.ConfigurationTest")
	INFO - Created Ejb(deployment-id=org.superbiz.injection.enventry.ConfigurationTest, ejb-name=org.superbiz.injection.enventry.ConfigurationTest, container=Default Managed Container)
	INFO - Created Ejb(deployment-id=Configuration, ejb-name=Configuration, container=Default Singleton Container)
	INFO - Started Ejb(deployment-id=org.superbiz.injection.enventry.ConfigurationTest, ejb-name=org.superbiz.injection.enventry.ConfigurationTest, container=Default Managed Container)
	INFO - Started Ejb(deployment-id=Configuration, ejb-name=Configuration, container=Default Singleton Container)
	INFO - Deployed Application(path=/Users/dblevins/examples/injection-of-env-entry)
	Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.664 sec

	Results :

	Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
	</code></pre>
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