jeffscottbrown

trait Foo<T> {
    T getSomething() {
        // how to return an instance of whatever T represents?...
    }
}

class FooSomething implements Foo<Person> {

    
}

jeffscottbrown

groovy:000> 
groovy:000> aString = 'some string'
===> some string
groovy:000> aDoubleQuotedString = "some string"
===> some string
groovy:000> aGString = "Year: ${2070+42}"
===> Year: 2112
groovy:000> 
groovy:000> aString.class
===> class java.lang.String

jeffscottbrown

def query = Person.where {
       pets.size() == 2
}

jeffscottbrown

import grails.boot.GrailsApp
import grails.boot.config.GrailsAutoConfiguration
import org.apache.catalina.Context
import org.springframework.boot.context.embedded.tomcat.TomcatContextCustomizer
import org.springframework.context.annotation.Bean

class Application extends GrailsAutoConfiguration {
    static void main(String[] args) {
        GrailsApp.run(Application, args)
    }

jeffscottbrown

@Resource(uri='/people')
class Person {
   String firstName
   String lastName
}

jeffscottbrown

privateaccess $ cat Widget.java 
public class Widget {
    private int size = 42;
}
privateaccess $ 
privateaccess $ cat Demo.groovy 
class Demo {
    static void main(args) {

jeffscottbrown

~ $ java -version
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)
~ $ 
~ $ cat Doit.java 
public class Doit {
    public static void main(String[] a) {
        System.out.println("Hi");
    }

jeffscottbrown

groovy:000> initialMap = [name: 'Jeff', company: 'OCI']
===> [name:Jeff, company:OCI]
groovy:000> 
groovy:000> secondMap = initialMap.collectEntries { k, v ->
groovy:001>     ["-$k", v]
groovy:002> }
===> [-name:Jeff, -company:OCI]
groovy:000> 
groovy:000> println "Initial Map: $initialMap"
Initial Map: [name:Jeff, company:OCI]

jeffscottbrown

~ $ mn create-app --features swagger-java withswagger
| Generating Java project...
| Application created at /Users/jeffbrown/withswagger
~ $ 
~ $ 
~ $ mn create-app withoutswagger
| Generating Java project...
| Application created at /Users/jeffbrown/withoutswagger
~ $ 
~ $ 

jeffscottbrown

private Function<String, Mono<? extends Orders>> keyToOrder(RedisReactiveCommands<String, String> commands) {
    return { key -> 
        Flux<KeyValue<String, String>> values = commands.hmget(key, "price", "description")
        Map map = [:]
        return values.reduce(map, (all, keyValue)= {all.put(keyValue.getKey(), keyValue.getValue())
            return all
        }).map({entries -> ConvertibleValues.of(entries)})
                .flatMap({entries -> 
            String description = entries.get("description", String.class).orElseThrow({ new IllegalStateException("No description")})
            BigDecimal price = entries.get("price", BigDecimal.class).orElseThrow({new IllegalStateException("No price")})