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               <h1>@Resource</h1>
             </div>
           </div>
         </div>
         <div class="row">

             <div class="col-md-12">
                 <div id="preamble">
 <div class="sectionbody">
 <div class="paragraph">
 <p>This example demonstrates the use of the injection of environment
 entries using <strong><code>@Resource</code></strong> annotation.</p>
 </div>
 <div class="paragraph">
 <p>The EJB 3.0 specification (<em>EJB Core Contracts and Requirements</em>)
 section 16.2.2 reads:</p>
 </div>
 <div class="paragraph">
 <p><em>A field or method of a bean class may be annotated to request that an
 entry from the bean&#8217;s environment be injected. Any of the types of
 resources or other environment entries described in this chapter may be
 injected. Injection may also be requested using entries in the
 deployment descriptor corresponding to each of these resource types.</em></p>
 </div>
 <div class="paragraph">
 <p><em>Environment entries may also be injected into the bean through bean
 methods that follow the naming conventions for JavaBeans properties. The
 annotation is applied to the set method for the property, which is the
 method that is called to inject the environment entry. The JavaBeans
 property name (not the method name) is used as the default JNDI name.</em></p>
 </div>
 <div class="paragraph">
 <p>The <em>PurchaseOrderBean</em> class shows use of field-level <strong><code>@Resource</code></strong>
 annotation.</p>
 </div>
 <div class="paragraph">
 <p>The <em>InvoiceBean</em> class shows the use of method-level <strong><code>@Resource</code></strong>
 annotation.</p>
 </div>
 <div class="paragraph">
 <p>The source for this example can be checked out from svn:</p>
 </div>
 <div class="quoteblock">
 <blockquote>
 <div class="paragraph">
 <p>$ svn co
 <a href="http://svn.apache.org/repos/asf/tomee/tomee/trunk/examples/injection-of-env-entry" class="bare">http://svn.apache.org/repos/asf/tomee/tomee/trunk/examples/injection-of-env-entry</a></p>
 </div>
 </blockquote>
 </div>
 <div class="paragraph">
 <p>To run it change your working directory to the directory
 <em>injection-of-env-entry</em> and run the following maven2 commands:</p>
 </div>
 <div class="quoteblock">
 <blockquote>
 <div class="paragraph">
 <p>$ cd injection-of-env-entry</p>
 </div>
 </blockquote>
 </div>
 <div class="quoteblock">
 <blockquote>
 <div class="paragraph">
 <p>$ mvn clean install</p>
 </div>
 </blockquote>
 </div>
 </div>
 </div>
 <h1 id="_the_code" class="sect0">The Code</h1>
 <div class="sect1">
 <h2 id="_injection_through_field_field_level_injection">Injection through field (field-level injection)</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>The <em>maxLineItem</em> field in <em>PurchaseOrderBean</em> class is annotated with
 <strong>@Resource</strong> annotation to inform the EJB container the location where in
 the code the injection of a simple environment entry should take place.
 The default value of 10 is assigned. You can modify the value of the
 environment entries at deployment time using deployment descriptor
 (<strong>ejb-jar.xml</strong>).</p>
 </div>
 <div class="sect2">
 <h3 id="__resource_annotation_of_a_field">@Resource annotation of a field</h3>
 <div class="listingblock">
 <div class="content">
 <pre class="highlight"><code class="language-java" data-lang="java">@Resource
 int maxLineItems = 10;</code></pre>
 </div>
 </div>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_injection_through_a_setter_method_method_level_injection">Injection through a setter method (method-level injection)</h2>
 <div class="sectionbody">
 <div class="paragraph">
 <p>The <em>setMaxLineItem</em> method in <em>InvoiceBean</em> class is annotated with
 <em>@Resource</em> annotation to inject the simple environment entry. Only
 setters can be used as a way to inject environment entry values.</p>
 </div>
 <div class="paragraph">
 <p>You could look up the env-entry using JNDI lookup() method and the
 following name:</p>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre class="highlight"><code class="language-properties" data-lang="properties">java:comp/env/org.apache.openejb.examples.resource.InvoiceBean/maxLineItems</code></pre>
 </div>
 </div>
 <div class="paragraph">
 <p>The pattern is to combine the fully-qualified class name and the name of
 a instance field (or a name of the setter method without <em>set</em> prefix
 and the first letter lowercased).</p>
 </div>
 <div class="sect2">
 <h3 id="__resource_annotation_of_a_setter_method">@Resource annotation of a setter method</h3>
 <div class="listingblock">
 <div class="content">
 <pre class="highlight"><code class="language-java" data-lang="java">@Resource
 public void setMaxLineItems(int maxLineItems) {
     this.maxLineItems = maxLineItems;
 }</code></pre>
 </div>
 </div>
 </div>
 <div class="sect2">
 <h3 id="_using_env_entry_in_ejb_jar_xml">Using env-entry in ejb-jar.xml</h3>
 <div class="listingblock">
 <div class="content">
 <pre class="highlight"><code class="language-xml" data-lang="xml">&lt;env-entry&gt;
     &lt;description&gt;The maximum number of line items per invoice.&lt;/description&gt;
     &lt;env-entry-name&gt;org.apache.openejb.examples.injection.InvoiceBean/maxLineItems&lt;/env-entry-name&gt;
     &lt;env-entry-type&gt;java.lang.Integer&lt;/env-entry-type&gt;
     &lt;env-entry-value&gt;15&lt;/env-entry-value&gt;
 &lt;/env-entry&gt;</code></pre>
 </div>
 </div>
 </div>
 <div class="sect2">
 <h3 id="_using_resource_annotated_env_entry">Using @Resource annotated env-entry</h3>
 <div class="listingblock">
 <div class="content">
 <pre class="highlight"><code class="language-java" data-lang="java">public void addLineItem(LineItem item) throws TooManyItemsException {
    if (item == null) {
       throw new IllegalArgumentException("Line item must not be null");
    }

    if (itemCount &lt;= maxLineItems) {
       items.add(item);
       itemCount++;
    } else {
       throw new TooManyItemsException("Number of items exceeded the maximum limit");
    }
 }</code></pre>
 </div>
 </div>
 </div>
 </div>
 </div>
 <h1 id="_junit_test" class="sect0">JUnit Test</h1>
 <div class="paragraph">
 <p>Writing an JUnit test for this example is quite simple. We need just to
 write a setup method to create and initialize the InitialContext, and
 then write our test methods.</p>
 </div>
 <div class="sect1">
 <h2 id="_test_fixture">Test fixture</h2>
 <div class="sectionbody">
 <div class="listingblock">
 <div class="content">
 <pre class="highlight"><code class="language-java" data-lang="java">protected void setUp() throws Exception {
     Properties properties = new Properties();
     properties.setProperty(Context.INITIAL_CONTEXT_FACTORY, "org.apache.openejb.client.LocalInitialContextFactory");
     properties.setProperty("openejb.deployments.classpath.include", ".*resource-injection.*");
     initialContext = new InitialContext(properties);
 }</code></pre>
 </div>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_test_methods">Test methods</h2>
 <div class="sectionbody">
 <div class="listingblock">
 <div class="content">
 <pre class="highlight"><code class="language-java" data-lang="java">public void testAddLineItem() throws Exception {
     Invoice order = (Invoice)initialContext.lookup("InvoiceBeanBusinessRemote");
     assertNotNull(order);
     LineItem item = new LineItem("ABC-1", "Test Item");

     try {
     order.addLineItem(item);
     } catch (TooManyItemsException tmie) {
     fail("Test failed due to: " + tmie.getMessage());
     }
 }</code></pre>
 </div>
 </div>
 </div>
 </div>
 <h1 id="_running" class="sect0">Running</h1>
 <div class="paragraph">
 <p>Running the example is fairly simple. Just execute the following
 commands:</p>
 </div>
 <div class="quoteblock">
 <blockquote>
 <div class="paragraph">
 <p>$ cd injection-of-env-entry</p>
 </div>
 <div class="paragraph">
 <p>$ mvn clean test</p>
 </div>
 </blockquote>
 </div>
 <div class="listingblock">
 <div class="content">
 <pre class="highlight"><code class="language-java" data-lang="java">-------------------------------------------------------
  T E S T S
 -------------------------------------------------------
 Running org.superbiz.injection.PurchaseOrderBeanTest
 Apache OpenEJB 3.0.0-SNAPSHOT    build: 20071218-01:41
 http://tomee.apache.org/
 INFO - openejb.home = c:\oss\openejb3\examples\injection-of-env-entry
 INFO - openejb.base = c:\oss\openejb3\examples\injection-of-env-entry
 WARN - Cannot find the configuration file [conf/openejb.xml].  Will attempt to create one for the beans deployed.
 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 - Configuring Service(id=Default JDK 1.3 ProxyFactory, type=ProxyFactory, provider-id=Default JDK 1.3 ProxyFactory)
 INFO - Found EjbModule in classpath: c:\oss\openejb3\examples\injection-of-env-entry\target\classes
 INFO - Configuring app: c:\oss\openejb3\examples\injection-of-env-entry\target\classes
 INFO - Configuring Service(id=Default Stateful Container, type=Container, provider-id=Default Stateful Container)
 INFO - Auto-creating a container for bean InvoiceBean: Container(type=STATEFUL, id=Default Stateful Container)
 INFO - Loaded Module: c:\oss\openejb3\examples\injection-of-env-entry\target\classes
 INFO - Assembling app: c:\oss\openejb3\examples\injection-of-env-entry\target\classes
 INFO - Jndi(name=InvoiceBeanRemote) --&gt; Ejb(deployment-id=InvoiceBean)
 INFO - Jndi(name=PurchaseOrderBeanRemote) --&gt; Ejb(deployment-id=PurchaseOrderBean)
 INFO - Created Ejb(deployment-id=InvoiceBean, ejb-name=InvoiceBean, container=Default Stateful Container)
 INFO - Created Ejb(deployment-id=PurchaseOrderBean, ejb-name=PurchaseOrderBean, container=Default Stateful Container)
 INFO - Deployed Application(path=c:\oss\openejb3\examples\injection-of-env-entry\target\classes)
 INFO - OpenEJB ready.
 OpenEJB ready.
 Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 2.859 sec
 Running org.superbiz.injection.InvoiceBeanTest
 Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.031 sec

 Results :

 Tests run: 4, Failures: 0, Errors: 0, Skipped: 0</code></pre>
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	<div id="main-block" class="container main-block">
	<div class="row title">
	<div class="col-md-12">
	<div class='page-header'>

	<h1>@Resource</h1>
	</div>
	</div>
	</div>
	<div class="row">

	<div class="col-md-12">
	<div id="preamble">
	<div class="sectionbody">
	<div class="paragraph">
	<p>This example demonstrates the use of the injection of environment
	entries using <strong><code>@Resource</code></strong> annotation.</p>
	</div>
	<div class="paragraph">
	<p>The EJB 3.0 specification (<em>EJB Core Contracts and Requirements</em>)
	section 16.2.2 reads:</p>
	</div>
	<div class="paragraph">
	<p><em>A field or method of a bean class may be annotated to request that an
	entry from the bean’s environment be injected. Any of the types of
	resources or other environment entries described in this chapter may be
	injected. Injection may also be requested using entries in the
	deployment descriptor corresponding to each of these resource types.</em></p>
	</div>
	<div class="paragraph">
	<p><em>Environment entries may also be injected into the bean through bean
	methods that follow the naming conventions for JavaBeans properties. The
	annotation is applied to the set method for the property, which is the
	method that is called to inject the environment entry. The JavaBeans
	property name (not the method name) is used as the default JNDI name.</em></p>
	</div>
	<div class="paragraph">
	<p>The <em>PurchaseOrderBean</em> class shows use of field-level <strong><code>@Resource</code></strong>
	annotation.</p>
	</div>
	<div class="paragraph">
	<p>The <em>InvoiceBean</em> class shows the use of method-level <strong><code>@Resource</code></strong>
	annotation.</p>
	</div>
	<div class="paragraph">
	<p>The source for this example can be checked out from svn:</p>
	</div>
	<div class="quoteblock">
	<blockquote>
	<div class="paragraph">
	<p>$ svn co
	<a href="http://svn.apache.org/repos/asf/tomee/tomee/trunk/examples/injection-of-env-entry" class="bare">http://svn.apache.org/repos/asf/tomee/tomee/trunk/examples/injection-of-env-entry</a></p>
	</div>
	</blockquote>
	</div>
	<div class="paragraph">
	<p>To run it change your working directory to the directory
	<em>injection-of-env-entry</em> and run the following maven2 commands:</p>
	</div>
	<div class="quoteblock">
	<blockquote>
	<div class="paragraph">
	<p>$ cd injection-of-env-entry</p>
	</div>
	</blockquote>
	</div>
	<div class="quoteblock">
	<blockquote>
	<div class="paragraph">
	<p>$ mvn clean install</p>
	</div>
	</blockquote>
	</div>
	</div>
	</div>
	<h1 id="_the_code" class="sect0">The Code</h1>
	<div class="sect1">
	<h2 id="_injection_through_field_field_level_injection">Injection through field (field-level injection)</h2>
	<div class="sectionbody">
	<div class="paragraph">
	<p>The <em>maxLineItem</em> field in <em>PurchaseOrderBean</em> class is annotated with
	<strong>@Resource</strong> annotation to inform the EJB container the location where in
	the code the injection of a simple environment entry should take place.
	The default value of 10 is assigned. You can modify the value of the
	environment entries at deployment time using deployment descriptor
	(<strong>ejb-jar.xml</strong>).</p>
	</div>
	<div class="sect2">
	<h3 id="__resource_annotation_of_a_field">@Resource annotation of a field</h3>
	<div class="listingblock">
	<div class="content">
	<pre class="highlight"><code class="language-java" data-lang="java">@Resource
	int maxLineItems = 10;</code></pre>
	</div>
	</div>
	</div>
	</div>
	</div>
	<div class="sect1">
	<h2 id="_injection_through_a_setter_method_method_level_injection">Injection through a setter method (method-level injection)</h2>
	<div class="sectionbody">
	<div class="paragraph">
	<p>The <em>setMaxLineItem</em> method in <em>InvoiceBean</em> class is annotated with
	<em>@Resource</em> annotation to inject the simple environment entry. Only
	setters can be used as a way to inject environment entry values.</p>
	</div>
	<div class="paragraph">
	<p>You could look up the env-entry using JNDI lookup() method and the
	following name:</p>
	</div>
	<div class="listingblock">
	<div class="content">
	<pre class="highlight"><code class="language-properties" data-lang="properties">java:comp/env/org.apache.openejb.examples.resource.InvoiceBean/maxLineItems</code></pre>
	</div>
	</div>
	<div class="paragraph">
	<p>The pattern is to combine the fully-qualified class name and the name of
	a instance field (or a name of the setter method without <em>set</em> prefix
	and the first letter lowercased).</p>
	</div>
	<div class="sect2">
	<h3 id="__resource_annotation_of_a_setter_method">@Resource annotation of a setter method</h3>
	<div class="listingblock">
	<div class="content">
	<pre class="highlight"><code class="language-java" data-lang="java">@Resource
	public void setMaxLineItems(int maxLineItems) {
	this.maxLineItems = maxLineItems;
	}</code></pre>
	</div>
	</div>
	</div>
	<div class="sect2">
	<h3 id="_using_env_entry_in_ejb_jar_xml">Using env-entry in ejb-jar.xml</h3>
	<div class="listingblock">
	<div class="content">
	<pre class="highlight"><code class="language-xml" data-lang="xml"><env-entry>
	<description>The maximum number of line items per invoice.</description>
	<env-entry-name>org.apache.openejb.examples.injection.InvoiceBean/maxLineItems</env-entry-name>
	<env-entry-type>java.lang.Integer</env-entry-type>
	<env-entry-value>15</env-entry-value>
	</env-entry></code></pre>
	</div>
	</div>
	</div>
	<div class="sect2">
	<h3 id="_using_resource_annotated_env_entry">Using @Resource annotated env-entry</h3>
	<div class="listingblock">
	<div class="content">
	<pre class="highlight"><code class="language-java" data-lang="java">public void addLineItem(LineItem item) throws TooManyItemsException {
	if (item == null) {
	throw new IllegalArgumentException("Line item must not be null");
	}

	if (itemCount <= maxLineItems) {
	items.add(item);
	itemCount++;
	} else {
	throw new TooManyItemsException("Number of items exceeded the maximum limit");
	}
	}</code></pre>
	</div>
	</div>
	</div>
	</div>
	</div>
	<h1 id="_junit_test" class="sect0">JUnit Test</h1>
	<div class="paragraph">
	<p>Writing an JUnit test for this example is quite simple. We need just to
	write a setup method to create and initialize the InitialContext, and
	then write our test methods.</p>
	</div>
	<div class="sect1">
	<h2 id="_test_fixture">Test fixture</h2>
	<div class="sectionbody">
	<div class="listingblock">
	<div class="content">
	<pre class="highlight"><code class="language-java" data-lang="java">protected void setUp() throws Exception {
	Properties properties = new Properties();
	properties.setProperty(Context.INITIAL_CONTEXT_FACTORY, "org.apache.openejb.client.LocalInitialContextFactory");
	properties.setProperty("openejb.deployments.classpath.include", ".resource-injection.");
	initialContext = new InitialContext(properties);
	}</code></pre>
	</div>
	</div>
	</div>
	</div>
	<div class="sect1">
	<h2 id="_test_methods">Test methods</h2>
	<div class="sectionbody">
	<div class="listingblock">
	<div class="content">
	<pre class="highlight"><code class="language-java" data-lang="java">public void testAddLineItem() throws Exception {
	Invoice order = (Invoice)initialContext.lookup("InvoiceBeanBusinessRemote");
	assertNotNull(order);
	LineItem item = new LineItem("ABC-1", "Test Item");

	try {
	order.addLineItem(item);
	} catch (TooManyItemsException tmie) {
	fail("Test failed due to: " + tmie.getMessage());
	}
	}</code></pre>
	</div>
	</div>
	</div>
	</div>
	<h1 id="_running" class="sect0">Running</h1>
	<div class="paragraph">
	<p>Running the example is fairly simple. Just execute the following
	commands:</p>
	</div>
	<div class="quoteblock">
	<blockquote>
	<div class="paragraph">
	<p>$ cd injection-of-env-entry</p>
	</div>
	<div class="paragraph">
	<p>$ mvn clean test</p>
	</div>
	</blockquote>
	</div>
	<div class="listingblock">
	<div class="content">
	<pre class="highlight"><code class="language-java" data-lang="java">-------------------------------------------------------
	T E S T S
	-------------------------------------------------------
	Running org.superbiz.injection.PurchaseOrderBeanTest
	Apache OpenEJB 3.0.0-SNAPSHOT build: 20071218-01:41
	http://tomee.apache.org/
	INFO - openejb.home = c:\oss\openejb3\examples\injection-of-env-entry
	INFO - openejb.base = c:\oss\openejb3\examples\injection-of-env-entry
	WARN - Cannot find the configuration file [conf/openejb.xml]. Will attempt to create one for the beans deployed.
	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 - Configuring Service(id=Default JDK 1.3 ProxyFactory, type=ProxyFactory, provider-id=Default JDK 1.3 ProxyFactory)
	INFO - Found EjbModule in classpath: c:\oss\openejb3\examples\injection-of-env-entry\target\classes
	INFO - Configuring app: c:\oss\openejb3\examples\injection-of-env-entry\target\classes
	INFO - Configuring Service(id=Default Stateful Container, type=Container, provider-id=Default Stateful Container)
	INFO - Auto-creating a container for bean InvoiceBean: Container(type=STATEFUL, id=Default Stateful Container)
	INFO - Loaded Module: c:\oss\openejb3\examples\injection-of-env-entry\target\classes
	INFO - Assembling app: c:\oss\openejb3\examples\injection-of-env-entry\target\classes
	INFO - Jndi(name=InvoiceBeanRemote) --> Ejb(deployment-id=InvoiceBean)
	INFO - Jndi(name=PurchaseOrderBeanRemote) --> Ejb(deployment-id=PurchaseOrderBean)
	INFO - Created Ejb(deployment-id=InvoiceBean, ejb-name=InvoiceBean, container=Default Stateful Container)
	INFO - Created Ejb(deployment-id=PurchaseOrderBean, ejb-name=PurchaseOrderBean, container=Default Stateful Container)
	INFO - Deployed Application(path=c:\oss\openejb3\examples\injection-of-env-entry\target\classes)
	INFO - OpenEJB ready.
	OpenEJB ready.
	Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 2.859 sec
	Running org.superbiz.injection.InvoiceBeanTest
	Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.031 sec

	Results :

	Tests run: 4, Failures: 0, Errors: 0, Skipped: 0</code></pre>
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