Re: [rules-users] @key declarations for a type - What's under the hood?

But what if you now have 2 declare statements in which one defines itself in terms of the other ... // A room is also a thing declare Room extends Thing name : String @key end One would instantiate an object like this: Room room = new Room("office"); // A door is a pathway between two rooms declare Door extends Thing fromRoom : Room @key toRoom : Room @key end How would one instantiate an object of 'Door' ? On Wed, Feb 26, 2014 at 5:11 PM, Edson Tirelli <ed.tirelli(a)gmail.com&gt; wrote: > > Drools bytecode generates these beans without generating java source > code (if you are using the declare, not the data modeller). Having said > that, it is very simple: > > declare Here > location: String @key > end > > Generates a java class roughly equivalent to: > > public class Here implements Serializable { > private String location; > > public Here() {} > > public Here( String location ) { > this.location = location; > } > > public String getLocation() { return location; } > public void setLocation(String location) { this.location = location; } > > // generates a toString() > > // generates a hashCode()/equals() method that use the location's > hashcode()/equals() > } > > I did this from memory, but it is pretty much all it does. Nothing > complex there, just a javabean really. > > The difference to not using @key is that the hashCode()/equals() > methods would not take "location" in consideration, and in this case, > since > there are no other attributes, would then rely on system identity. > > Edson > > > > > > On Wed, Feb 26, 2014 at 2:23 PM, profversaggi > <profversaggi(a)gmail.com&gt;wrote: > >> I was looking for something along the lines of a method of inspecting >> the >> resulting code of any arbitrary @key declarations I might want to >> deploy. >> Is >> there such a way? >> >> >> >> -- >> View this message in context: >> http://drools.46999.n3.nabble.com/key-declarations-for-a-type-What-s-unde... >> Sent from the Drools: User forum mailing list archive at Nabble.com. >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users >> > > > > -- > Edson Tirelli > Principal Software Engineer > Red Hat Business Systems and Intelligence Group > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > -- ######################################################### Matthew R. Versaggi, President & CEO Versaggi Information Systems, Inc. Adjunct Professor of eBusiness DePaul University Email: mailto:matt@versaggi.com, ProfVersaggi(a)gmail.com M: 630-292-8422 LinkedIn: http://www.linkedin.com/in/versaggi #########################################################