I'll try the next couple of days. Thanks,
/Bengt 2012/4/18 Claus Ibsen <claus.ib...@gmail.com> > On Wed, Apr 18, 2012 at 6:41 PM, Claus Ibsen <claus.ib...@gmail.com> > wrote: > > Hi > > > > Okay I found a little time, trying to do the backport. There is 3 > > commits in total. > > > > Okay backported to 2.9 branch. > > Bengt you are of course welcome to test the 2.9.3-SNAPSHOT on your end > if it fixed the issue onwards. > > > > > > On Tue, Apr 17, 2012 at 7:46 AM, Claus Ibsen <claus.ib...@gmail.com> > wrote: > >> Hi > >> > >> Recently I have spent some time to improve the type converters in Camel > 2.10. > >> > >> Most significant is the following changes > >> a) fix important bug > >> b) Fail fast > >> c) tryConvertTo > >> d) Expose utilization statistics > >> > >> > >> Ad a) > >> A bug was reported in https://issues.apache.org/jira/browse/CAMEL-5164 > >> > >> In summary if using camel-jaxb that offers a fallback type converter, > >> and a failure occurs during XML marshalling, > >> then subsequent new XML messages may fail, despite they were okay. > >> > >> Ad b) > >> Due to a we need to detect this faster and better. So now the type > >> converter system in Camel will fail fast > >> by throwing a new TypeConversionException (its runtime). That allows > >> Camel to detect the (a) failure faster > >> from a fallback type converter (regular non fallback would fail fast > already) > >> > >> This means the API is also consistent from caller point of view. You > >> get a TypeConversionException if there > >> was a failure during a type conversion attempt. > >> > >> Ad c) > >> There is some places in camel-core where we want to only try to > >> convert. For example with the binary predicates > >> where you want to compare if X > Y. Then we try to coerce X and Y to > >> numeric values. > >> > >> Likewise there is a few other spots where we do this, such as the XSLT > >> component, where we try to use StAX, SAX, before DOM etc. > >> So we have introduced a tryConvertTo API, which would not fail during > >> type conversion. > >> > >> Ad d) > >> The type converter system is used a lot in Camel during routing > >> messages. Now we expose utilization statistics, > >> which allow end users to spot if there is too many missing type > >> conversion attempts. For example a route may attempt to convert, where > >> there is no suitable type converter. This can now more easily be > >> spotted, allowing the end user to either. Implement such a missing > >> type converter, or > >> correct a mistake in his application or the likes. > >> > >> The statistics is exposed in JMX and as well when Camel shutdown as a > log line. > >> > >> > >> > >> > >> On another note I am also hunting down to avoid using the > >> PropertiesEditorTypeConverter, as it has many flaws > >> - its not thread safe > >> - its slow > >> - and 3rd party projects can add property editors that influence > >> Camel's type converts (eg ActiveMQ has a String -> List) properties > >> editor that turns a String into a List of ActiveMQDestination > >> instances. > >> - it does not understand generics in List/Collection type, eg the > >> ActiveMQ example above > >> > >> And basically we uses it only in Camel for doing some of the simpler > >> basic conversions: String <-> Numeric. And so forth. But over the time > >> we have added those as type converter directly in Camel, as they are > >> faster as well. > >> > >> > >> > >> > >> -- > >> Claus Ibsen > >> ----------------- > >> CamelOne 2012 Conference, May 15-16, 2012: http://camelone.com > >> FuseSource > >> Email: cib...@fusesource.com > >> Web: http://fusesource.com > >> Twitter: davsclaus, fusenews > >> Blog: http://davsclaus.blogspot.com/ > >> Author of Camel in Action: http://www.manning.com/ibsen/ > > > > > > > > -- > > Claus Ibsen > > ----------------- > > CamelOne 2012 Conference, May 15-16, 2012: http://camelone.com > > FuseSource > > Email: cib...@fusesource.com > > Web: http://fusesource.com > > Twitter: davsclaus, fusenews > > Blog: http://davsclaus.blogspot.com/ > > Author of Camel in Action: http://www.manning.com/ibsen/ > > > > -- > Claus Ibsen > ----------------- > CamelOne 2012 Conference, May 15-16, 2012: http://camelone.com > FuseSource > Email: cib...@fusesource.com > Web: http://fusesource.com > Twitter: davsclaus, fusenews > Blog: http://davsclaus.blogspot.com/ > Author of Camel in Action: http://www.manning.com/ibsen/ >
