<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">To reply, what we already discussed on irc.<div><br></div><div>This will do it:</div><div><br></div><div><pre style="color: rgb(0, 0, 0); font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; word-wrap: break-word; white-space: pre-wrap; "> Class<RequestHandler> clazz = (Class<RequestHandler>) tmp;
InjectionTarget<RequestHandler> it = manager.createInjectionTarget(manager.createAnnotatedType(clazz));
CreationalContext<RequestHandler> cc = manager.createCreationalContext(null);
// handler = it.produce(cc); // no need for this, if you already have an instance
it.inject(handler, cc);</pre><div><br></div></div><div><br></div><div><a href="https://github.com/capedwarf/capedwarf-green/blob/master/server-api/src/main/java/org/jboss/capedwarf/server/api/servlet/WeldServlet.java">https://github.com/capedwarf/capedwarf-green/blob/master/server-api/src/main/java/org/jboss/capedwarf/server/api/servlet/WeldServlet.java</a></div><div><br><div><div>On Dec 7, 2011, at 1:21 PM, José Rodolfo Freitas wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">Ales and All,<div><br></div><div>when</div><div><div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px; background-color: rgba(255, 255, 255, 0.917969); "><br></div><div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px; background-color: rgba(255, 255, 255, 0.917969); ">
@Inject</div><div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px; background-color: rgba(255, 255, 255, 0.917969); "> GenericQuery<String> gqs;</div></div><div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px; background-color: rgba(255, 255, 255, 0.917969); ">
<br></div><div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px; background-color: rgba(255, 255, 255, 0.917969); ">my producer do:</div><div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px; background-color: rgba(255, 255, 255, 0.917969); ">
<br></div><div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px; background-color: rgba(255, 255, 255, 0.917969); "> new GenericQuery(clazz)</div><div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px; background-color: rgba(255, 255, 255, 0.917969); ">
<br></div><div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px; background-color: rgba(255, 255, 255, 0.917969); ">And then @Inject inside GenericQuery does not work (since I'm using new).</div>
<div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px; background-color: rgba(255, 255, 255, 0.917969); "><br></div><div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px; background-color: rgba(255, 255, 255, 0.917969); ">
What's the best approach in this situation?</div><div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px; background-color: rgba(255, 255, 255, 0.917969); "><br></div><div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px; background-color: rgba(255, 255, 255, 0.917969); ">
Using BeanManagerProvider.getInstance() inside GenericQuery constructor to provide instances for the objects I want to inject?</div><div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px; background-color: rgba(255, 255, 255, 0.917969); ">
<br></div><div><br><div class="gmail_quote">On Tue, Dec 6, 2011 at 9:29 PM, José Rodolfo Freitas <span dir="ltr"><<a href="mailto:joserodolfo.freitas@gmail.com">joserodolfo.freitas@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
that´s an awesome solution Ales!<div>I didn´t thought that I could obtain the parametizedType that way!</div><div>Testing this will be my first task tomorrow morning.<br><br>thank you all for your ideas.<div><div class="h5">
<br><br><div class="gmail_quote">
On Tue, Dec 6, 2011 at 8:55 PM, Jason Porter <span dir="ltr"><<a href="mailto:lightguard.jp@gmail.com" target="_blank">lightguard.jp@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Nice solution Ales, wish I'd thought of it :)<div><div><br><br><div class="gmail_quote">On Tue, Dec 6, 2011 at 15:45, Ales Justin <span dir="ltr"><<a href="mailto:ales.justin@gmail.com" target="_blank">ales.justin@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div>You could do something like this:</div><div><br></div><div><div> @SuppressWarnings({"unchecked"})</div>
<div> @Produces</div><div> public GenericQuery injectClass(InjectionPoint ip) {</div><div> Annotated annotated = ip.getAnnotated();</div><div> Class clazz = Object.class;</div><div> Type type = annotated.getBaseType();</div>
<div> if (type instanceof ParameterizedType) {</div><div> ParameterizedType pt = (ParameterizedType) type;</div><div> clazz = (Class) pt.getActualTypeArguments()[0];</div><div> }</div>
<div>
return new GenericQuery(clazz);</div><div> }</div><div><br></div><div>--</div><div><br></div><div><div> @Inject</div><div> GenericQuery<String> gqs;</div><div> @Inject</div><div> GenericQuery<Number> gqn;</div>
</div><div><br></div><div>--</div><div><br></div><div><div><div> System.out.println("GQS: " + gqs.getClazz());</div><div> System.out.println("GQN: " + gqn.getClazz());</div></div></div><span><font color="#888888"><div>
<br></div><div>--</div><div><br></div><div><div>GQS: class java.lang.String</div><div>GQN: class java.lang.Number</div></div><div><br></div><div>--</div><div><br></div><div><a href="https://github.com/alesj/cdi-arq-workshop/commit/64860f15197be40a7714dfd8a7da931c1db11411" target="_blank">https://github.com/alesj/cdi-arq-workshop/commit/64860f15197be40a7714dfd8a7da931c1db11411</a></div>
<div><br></div><div>HTH</div><div><br></div><div>-Ales</div></font></span></div><div><br><blockquote type="cite"><div><div>Hey guys, how you doing?<div><br></div><div><div>I'm trying to achieve something that might be impossible, but before concluding that, I'd like to ask you, CDI gurus!</div>
<div><br></div><div>I have the following class:</div>
<div><br></div><div>public class Foo<T> {</div><div><br></div><div> public TypedQuery<T> getQuery(){</div><div><br></div><div> }</div><div><br></div><div>}</div><div><br></div><div>As you can Imagine, inside my getQuery method, I'd have to use "T.class" to make it TypedQuery. which is impossible due java generics type erasure.</div>
<div><br></div><div>so I'd have to build a private field to hold the t.class for me.</div><div><br></div><div><div>public class Foo<T> {</div><div><br></div><div> private Class<T> klass;</div><div><br>
</div>
<div> public TypedQuery<T> getQuery(){</div><div><br></div><div> }</div><div> </div><div> public void setKlass(Class<T> klass){</div><div> this.klass = klass;</div><div> }</div><div>}</div>
</div><div><br></div><div>The problem is that forcing this 'setKlass' feels very ugly to the api, and it's not very error prone, since one could easily forget to set this configuration.</div><div><br></div><div>
So I had an Idea: force the setKlass inside the constructor:</div><div><br></div><div><div>public class Foo<T> {</div><div><br></div><div> private Class<T> klass;</div><div> </div><div> public Foo(Class<T> klass){</div>
<div> this.klass = klass;</div><div> }</div><div><br></div><div> public TypedQuery<T> getQuery(){</div><div><br></div><div> }</div><div><br></div><div>}</div></div><div><br></div><div>Unfortunatelly, this breaks cdi, since it cannot inject it anymore. At least AFAIK.</div>
<div><br></div><div>So, is there a way out of this? maybe using a secret solder feature?</div></div></div></div><div>
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<br></blockquote></div><br><br clear="all"><div><br></div></div></div><div><div>-- <br>Jason Porter<br><a href="http://lightguard-jp.blogspot.com/" target="_blank">http://lightguard-jp.blogspot.com</a><br>
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