Scala + Resteasy + Jetty 9 + Jackson

I have been start playing with scala and rest. Being a scala newbie I struggled a bit, but that's the best way to learn right ? Here a simple sbt project that expose a json rest api in Scala https://github.com/undeploy/scala-resteasy-jetty

Playing around with ios

Here a little project I worked this weekend that shows how to take a picture and the gps position on ios, hope can be helpful to some other that like me i starting playing around with Object-C and ios : https://github.com/undeploy/iMovi

AngularJS template and single quote

Are you using AngularJS template ? Well the single quote in the ng-include are important! If you don't type that the template will not work ;)
<div ng-include="'/header.html'"></div>

Spring + Resteasy + WRITE_DATES_AS_TIMESTAMPS

If you want to configure the ObjectMapper to serialize date as string well here it is.

First you create your custom implementation of ContextResolver<ObjectMapper> :

@Provider
public class MyJacksonConfig  implements ContextResolver<ObjectMapper> {
 
  @Override
  public ObjectMapper getContext(Class type) {
   ObjectMapper mapper = new ObjectMapper();
   mapper.configure(Feature.WRITE_DATES_AS_TIMESTAMPS, false);   
   mapper.setAnnotationIntrospector(
new Pair(
new JacksonAnnotationIntrospector(),
new JaxbAnnotationIntrospector()));
   return mapper;
  }
 
}

then you just need to add the provider to the resteasy.providers list in the web.xml :

 <context-param>
        <param-name>resteasy.providers</param-name>
        <param-value>org.codehaus.jackson.jaxrs.JacksonJaxbJsonProvider,org.rest.MyJacksonConfig</param-value>
    </context-param>

and voila', your DateTime will be serialized as ISO string format (eg: Created:2013-02 04T21:07:00.688+01:00)

Hope this will save some of your time guys :)

JAXB inheritance and XmlElementRef

If you want JAXB to use the subclass element root name (e.g in this case NotEmpty, NotNull), you have to indicate so adding the @XmlElementRef annotation on the collection containing the list of objects hierarchy. 



@XmlRootElement(name = "Property")
@XmlAccessorType(XmlAccessType.FIELD)
public class Property  {

public enum Type {
UUID,
STRING,
INTEGER,
LONG,
DECIMAL,
FLOAT,
DOUBLE,
BOOLEAN,
DATETIME
}

@NotNull
@XmlElement(name = "Name")
private String name;

@NotNull
@XmlElement(name = "Type")
private Type type;

@XmlElementWrapper(name = "Constraints")
@XmlElementRef
private List<PropertyConstraint> constraints;

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public Type getType() {
return type;
}

public void setType(Type type) {
this.type = type;
}

public void setConstraints(List<PropertyConstraint> constraints) {
this.constraints = constraints;
}

public List<PropertyConstraint> getConstraints() {
return constraints;
}
}

@XmlRootElement(name = "NotEmpty")
@XmlAccessorType(XmlAccessType.FIELD)
public class NotEmptyContraint extends PropertyConstraint {
}


@XmlRootElement(name = "NotNull")
@XmlAccessorType(XmlAccessType.FIELD)
public class NotNullConstraint extends PropertyConstraint {
}

public abstract class PropertyConstraint {
}


public static void main(String[] args) throws JAXBException {
Property p = new Property();
p.setType(Type.BOOLEAN);
p.setName("Name");
List<PropertyConstraint> asList = Arrays.asList(new PropertyConstraint[] {new NotEmptyContraint(), new NotNullConstraint()});
p.setConstraints(asList);

JAXBContext jaxc = JAXBContext.newInstance(Property.class, NotNullConstraint.class, NotEmptyContraint.class);
Marshaller m = jaxc.createMarshaller();
m.marshal(p, System.out);
}

will print : 


<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Property>
<Name>Name</Name>
<Type>BOOLEAN</Type>
<Constraints>
<NotEmpty></NotEmpty>
<NotNull></NotNull>
</Constraints>
</Property>