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4.3. API Changes

HTTPConduit class
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The HTTPConduit class has been made abstract and the code relating to HttpURLConnection has been moved to URLConnectionHTTPConduit. Several method calls of the HTTPConduit class that used to take HttpURLConnection objects have been eliminated. Moreover, most methods taking a URL object now take a URI object instead. The HTTPConduit.WrappedOutputStream class is also now abstract.
If you have implemented custom subclasses of HTTPConduit, it is probably necessary to refactor them as a subclass URLConnectionHTTPConduit, instead of HTTPConduit.

VersionTransformer and MAPCodec classes
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The VersionTransformer and MAPCodec classes (used for WS-Addressing) now use the header list on the SoapMessage directly, instead of encoding the WS-Addressing headers as DOM elements. The encode methods have therefore been changed to take a JAXBContext argument, instead of a Marshaller argument. Any custom VersionTransformers will need to be updated.

AbstractFeatures as return value or parameter
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All methods with an argumnet or return value of type, org.apache.cxf.feature.AbstractFeatures, have been changed to use org.apache.cxf.feature.Feature instead.

Removed classes
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The following classes have been removed from the JAX-RS library: 
org.apache.cxf.jaxrs.client.ResponseReader
org.apache.cxf.jaxrs.client.ServerWebApplicationException
org.apache.cxf.jaxrs.client.ClientWebApplicationException
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The first class in the list is not needed with the JAX-RS 2.0 Response class, while the last two classes are replaced by the classes, javax.ws.rs.WebApplicationException and javax.ws.rs.client.ClientException.

Security Token Service (STS) API
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The STS Claims object now takes a List<String> argument for the claims values, instead of a single String value.

Deprecated APIs
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The following CXF JAX-RS specific extensions have been deprecated and will eventually be removed:
org.apache.cxf.jaxrs.ext.ParamHandler
Use the javax.ws.rs.ext.ParamConverterProvider and javax.ws.rs.ext.ParamConverter classes instead.
org.apache.cxf.jaxrs.ext.RequestHandler
Use the javax.ws.rs.container.ContainerRequestFilter class instead.
org.apache.cxf.jaxrs.ext.ResponseHandler
Use javax.ws.rs.container.ContainerResponseFilter instead.
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