<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:8pt">In other words:<br><br>.) BeanManager#getReference will return you a 'Contextual Reference', means a normalscoping proxy for the bean. If you have a @SessionScoped User usr; then the Contextual Reference usr will 'point' to the respective User instance (the 'Contextual Instance') of the _current_ session for each invocation. Two different invocations to usr.getName() from 2 different web browsers will give you different answers.<br><br>.) Contest#get() will return you the internal 'Contextual Instance' without the normalscoping proxy. This is usually nothing a user should call himself. If you get the User usr for "Karl" that way and store it in an @ApplicationScoped bean or in a static variable, then it will _always_ remain to be the user "Karl" - even for web requests from other
browsers! You will get a direct, non-proxied instance.<br><br>LieGrue,<br>strub<br><div><span><br></span></div><div><br></div><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; margin-top: 5px; padding-left: 5px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 8pt;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif; font-size: 12pt;"> <div dir="ltr"> <hr size="1"> <font face="Arial" size="2"> <b><span style="font-weight:bold;">From:</span></b> Jozef Hartinger <jharting@redhat.com><br> <b><span style="font-weight: bold;">To:</span></b> Muhammad Bhutto <muhammad.bhutto@gmail.com> <br><b><span style="font-weight: bold;">Cc:</span></b> weld-dev@lists.jboss.org <br> <b><span style="font-weight: bold;">Sent:</span></b> Tuesday, 19 November 2013, 10:51<br> <b><span style="font-weight:
bold;">Subject:</span></b> Re: [weld-dev] BeanManager.getReference() VS Context.get()<br> </font> </div> <div class="y_msg_container"><br><div id="yiv4041003502"><div>
<div class="yiv4041003502moz-cite-prefix">On 11/19/2013 03:09 AM, Muhammad Bhutto
wrote:<br clear="none">
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<div>Hi All,</div>
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<div>Can you please explain me this one, I have confusion which
one is better.</div>
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</div>
<div>1.<br clear="none">
</div>
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<div>
<div>Bean<MyBean> bean = (Bean<MyBean>)
beanManager.resolve(beanManager.getBeans(MyBean.class));</div>
<div>MyBean= (MyBean) beanManager.getReference(bean,
bean.getBeanClass(),
beanManager.createCreationalContext(bean));</div>
</div>
</div>
</blockquote>
This one gives you a new instance of a client proxy. The client
proxy will forward method calls to the current contextual instance
of a particular context. You can therefore obtain the proxy once and
keep it and the method calls will be invoked on the current instance
(e.g. current request). It is also useful if the contextual instance
is not serializable - the client proxy will be and will reconnect
after you deserialize it.<br clear="none">
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<div>2.</div>
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<div>
<div>Bean<MyBean> bean = (Bean<MyBean>)
beanManager.resolve(beanManager.getBeans(MyBean.class));</div>
<div>MyBean bean =
beanManager.getContext(bean.getScope()).get(bean,
beanManager.createCreationalContext(bean));</div>
</div>
</div>
</blockquote>
This obtains the target instance without a client proxy. You may
still see a Weld's proxy in the class name but that is an enhanced
subclass that provides interception and decoration. If the bean is
not intercepted nor decorated this will be a plain instance of the
given bean.<br clear="none">
<br clear="none">
Usually (1) is more suitable unless you have a special use-case
where you need to access the target instance directly (e.g. to
access its fields).<div class="yiv4041003502yqt9049636189" id="yiv4041003502yqtfd51604"><br clear="none">
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<div>As i know BeanManager.getReference() always creates a
whole new proxy instance, while the Context.get() reuses an
existing proxy instance if already created before.<br clear="none">
</div>
<div><br clear="none">
</div>
<div> Is BeanManager.getReference() is more use full than
Context.get() ??<br clear="none">
</div>
<div><br clear="none">
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<div>Thanks</div>
<div><br clear="none">
</div>
<div>Muhammad Asif Bhutto</div>
</div>
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