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https://issues.apache.org/jira/browse/S4-5?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13169960#comment-13169960
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Leo Neumeyer commented on S4-5:
-------------------------------
Another round.
* Got rid of StreamMaker. Now it is a graph from PE to PE using an emit()
method. I can easily infer the stream from the graph, no need to create a
stream element.
* Added fluent configuration to Trigger/Timer by creating some additional
helper classes that the user doesn't have to see.
* I will try to do the stream wiring in the PEs using the Event type of the
streams but I'm not sure if it is possible.
{code:title=S4 Fluent API|borderStyle=dashed}
package org.apache.s4.fluent;
import java.util.concurrent.TimeUnit;
public class MyApp extends AppMaker {
@Override
protected void configure() {
PEMaker pez, pey, pex;
pez = addPE(PEZ.class);
pez.withTrigger().fireOn(EventA.class).ifInterval(5, TimeUnit.SECONDS);
pez.withCache().ofSize(1000).withDuration(3, TimeUnit.HOURS);
pey = addPE(PEY.class).property("duration", 4).property("height", 99);
pey.withTimerInterval(50, TimeUnit.MILLISECONDS);
pex = addPE(PEX.class).property("keyword", "money");
pey.emit(EventA.class).withKey("gender").to(pez);
pex.emit(EventB.class).withKey("height").to(pez);
pex.emit(EventB.class).withKey("age").to(pey).to(pez);
}
}
{code}
> Prototype app builder
> ---------------------
>
> Key: S4-5
> URL: https://issues.apache.org/jira/browse/S4-5
> Project: Apache S4
> Issue Type: New Feature
> Affects Versions: 0.5
> Reporter: Leo Neumeyer
> Priority: Minor
> Fix For: 0.5
>
>
> Extend Guice AbstractModule to create a simple application builder layer. The
> idea is to evaluate if we can use Guice to do all the wiring including PEs
> and Streams and Apps.
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