In trying to implement a very simple camel route in scala and have run into a
dead-end. First consider this java version:
public class CamelJavaTyperTest {
private DefaultCamelContext camel = new DefaultCamelContext();
private Processor p1 = new Processor() {
@Override public void process(Exchange exchange) throws Exception {
}
};
private Processor p2 = new Processor() {
@Override public void process(Exchange exchange) throws Exception {
}
};
public void init() throws Exception {
camel.addRoutes(new RouteBuilder() {
@Override
public void configure() throws Exception {
from("somewhere")
.process(p1)
.process(p2)
.to("nowhere");
}
});
}
}
This compiles fine. Now consider this seemingly identical scala version:
class CamelScalaTyperTest {
val camel = new DefaultCamelContext
val p1 = new Processor { def process(exchange: Exchange) = {} }
val p2 = new Processor { def process(exchange: Exchange) = {} }
camel addRoutes new RouteBuilder { override def configure() {
from ("somwhere")
.process(p1)
.process(p2)
.to("nowhere")
}}
}
The scala version results in this compiler error:
error: something is wrong (wrong class file?): class ProcessorDefinition
with type parameters [Type] gets applied to arguments [], phase = typer
.to ("jms:topic:__placeholder__")
Clearly this is a scala compiler bug (assuming that scala should be able to
handle all forms of java generics). This is similar to the kinds of issues
that I ran into when trying (and ultimately failing) to port the camel-scala
DSL from 2.7 to 2.8.
Of course I will package this up as a maven project and submit it as scala
bug report.
--
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