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Posted to commits@isis.apache.org by ah...@apache.org on 2018/02/22 19:48:14 UTC

[isis] 01/01: ISIS-1779 introduce resteasy legacy layer

This is an automated email from the ASF dual-hosted git repository.

ahuber pushed a commit to branch ISIS-1779-jax-rs-2
in repository https://gitbox.apache.org/repos/asf/isis.git

commit 3d7b6fd96c88945651ce039015c4af04e124441a
Author: Andi Huber <ah...@apache.org>
AuthorDate: Tue Feb 20 09:00:02 2018 +0100

    ISIS-1779 introduce resteasy legacy layer
    
    introduces o.a.i.viewer.legacy.RestEasyLegacy
    as a resteasy legacy layer to ease transition
    
    replaces jboss-jaxrs-api_2.0_spec (1.0.0.Final)
    with jboss-jaxrs-api (3.0.12.Final)
    
    adding a lot of TODO markers
    
    replace org.jboss.resteasy.client.core.executors.ApacheHttpClient4Executor
    with new o.a.i.viewer.legacy.ClientExecutor
---
 core/applib/pom.xml                                |   9 +-
 core/pom.xml                                       |  17 +++
 .../apache/isis/viewer/legacy/ClientExecutor.java  | 121 +++++++++++++++++++++
 .../ClientRequest.java}                            |  34 +++---
 .../ClientRequestFactory.java}                     |  43 ++++----
 .../apache/isis/viewer/legacy/RestEasyLegacy.java  |  87 +++++++++++++++
 .../restfulobjects/applib/LinkRepresentation.java  |   3 +-
 .../restfulobjects/applib/RestfulHttpMethod.java   |   2 +-
 .../applib/client/ClientRequestConfigurer.java     |  15 +--
 .../applib/client/RestfulClient.java               |  32 ++----
 .../applib/client/RestfulRequest.java              |  10 +-
 .../applib/domainobjects/DomainObjectResource.java |  30 +++--
 .../domainobjects/DomainServiceResource.java       |  14 +--
 .../applib/domaintypes/DomainTypeResource.java     |  19 ++--
 .../applib/homepage/HomePageResource.java          |  12 +-
 .../restfulobjects/applib/user/UserResource.java   |   6 +-
 .../restfulobjects/applib/util/JsonMapper.java     |   6 +-
 .../applib/version/VersionResource.java            |   3 +-
 .../conneg/IsisPrettyPrintingProcessor.java        |   2 +-
 .../PreProcessInterceptorForIsisSession.java       |  14 ++-
 20 files changed, 351 insertions(+), 128 deletions(-)

diff --git a/core/applib/pom.xml b/core/applib/pom.xml
index 7fa9feb..8a37233 100644
--- a/core/applib/pom.xml
+++ b/core/applib/pom.xml
@@ -79,10 +79,17 @@
             <groupId>org.apache.geronimo.specs</groupId>
             <artifactId>geronimo-jcdi_1.0_spec</artifactId>
         </dependency>
+        
+		<!-- replaced since Isis 2.0.0 by org.jboss.resteasy:jaxrs-api  
         <dependency>
             <groupId>org.jboss.spec.javax.ws.rs</groupId>
             <artifactId>jboss-jaxrs-api_2.0_spec</artifactId>
-        </dependency>
+        </dependency> -->
+        <dependency>
+		    <groupId>org.jboss.resteasy</groupId>
+		    <artifactId>jaxrs-api</artifactId>
+		</dependency>
+		        
 
         <dependency>
             <groupId>org.axonframework</groupId>
diff --git a/core/pom.xml b/core/pom.xml
index 1c5158b..6b90ac7 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -140,6 +140,12 @@
         <log4jdbc-remix.version>0.2.7</log4jdbc-remix.version>
         <resteasy-jaxrs.version>3.0.24.Final</resteasy-jaxrs.version>
 
+		<!-- for JEE 7 JAX-RS API 2.0 -->
+		<!-- <resteasy-jaxrs.version>3.1.4.Final</resteasy-jaxrs.version> -->
+		
+		<!-- for JEE 8 JAX-RS API 2.1 -->
+        <resteasy-jaxrs.version>4.0.0.Beta1</resteasy-jaxrs.version>
+
         <jetty.version>9.4.3.v20170317</jetty.version>
 
         <wicket.version>7.9.0</wicket.version>
@@ -184,7 +190,11 @@
 
         <javax-mail.version>1.4.7</javax-mail.version>
 
+		<!-- replaced since Isis 2.0.0 by jboss-jaxrs-api 
         <jboss-jaxrs-api_2.0_spec.version>1.0.0.Final</jboss-jaxrs-api_2.0_spec.version>
+        -->
+        <jboss-jaxrs-api.version>3.0.12.Final</jboss-jaxrs-api.version>
+        
     </properties>
 
     <scm>
@@ -2012,11 +2022,18 @@ ${license.additional-notes}
                 <version>${geronimo-jcdi_1.0_spec.version}</version>
             </dependency>
 
+			<!-- replaced since Isis 2.0.0 by org.jboss.resteasy:jaxrs-api  
             <dependency>
                 <groupId>org.jboss.spec.javax.ws.rs</groupId>
                 <artifactId>jboss-jaxrs-api_2.0_spec</artifactId>
                 <version>${jboss-jaxrs-api_2.0_spec.version}</version>
             </dependency>
+            -->
+        	<dependency>
+		    	<groupId>org.jboss.resteasy</groupId>
+		    	<artifactId>jaxrs-api</artifactId>
+		    	<version>${jboss-jaxrs-api.version}</version>
+			</dependency>
 
 
             <!-- javax APIs -->
diff --git a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/legacy/ClientExecutor.java b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/legacy/ClientExecutor.java
new file mode 100644
index 0000000..2f18caa
--- /dev/null
+++ b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/legacy/ClientExecutor.java
@@ -0,0 +1,121 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License.
+ */
+package org.apache.isis.viewer.legacy;
+
+import java.net.URI;
+import java.util.AbstractMap;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import javax.ws.rs.client.Client;
+import javax.ws.rs.client.Entity;
+import javax.ws.rs.client.Invocation;
+import javax.ws.rs.client.Invocation.Builder;
+import javax.ws.rs.client.WebTarget;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.UriBuilder;
+
+/**
+ * Compatibility layer, legacy of deprecated resteasy client API. 
+ * 
+ */
+public interface ClientExecutor {
+
+	ClientRequest createRequest(UriBuilder uriBuilder);
+	WebTarget webTarget(URI baseUri);
+
+	static ClientExecutor of(final Client client) {
+		return new ClientExecutor() {
+
+			@Override
+			public ClientRequest createRequest(UriBuilder uriBuilder) {
+				
+				return new ClientRequest() {
+					
+					final WebTarget target = client.target(uriBuilder);
+										
+					final List<MediaType> accept = new ArrayList<>();
+					final List<Map.Entry<String, String>> header = new ArrayList<>();
+					
+					private Entity<String> payload;
+
+					// TODO [andi-huber] just a wild guess
+					private String method = "get";
+
+					@Override
+					public String getHttpMethod() {
+						return method;
+					}
+					
+					@Override
+					public void setHttpMethod(String method) {
+						this.method = method;
+					}
+					
+					@Override
+					public void accept(MediaType mediaType) {
+						accept.add(mediaType);
+					}
+					
+					@Override
+					public void header(String headerName, String value) {
+						header.add(new AbstractMap.SimpleEntry<String, String>(headerName, value));
+					}
+					
+					@Override
+					public void addQueryParameter(String param, String arg) {
+						target.queryParam(param, arg);
+					}
+					
+					@Override
+					public void jsonPayload(String jsonString) {
+						payload = Entity.json(jsonString);
+					}
+					
+					@Override
+					public Response execute() {
+						final Builder builder = target.request();
+						
+						accept.stream()
+							.forEach(builder::accept);
+						header.stream()
+							.forEach(e->builder.header(e.getKey(), e.getValue()));
+						
+						final Invocation invocation = payload==null 
+								? builder.build(method)
+								: builder.build(method, payload);  
+						
+						return invocation.invoke();
+					}
+
+				};
+			}
+
+			@Override
+			public WebTarget webTarget(URI baseUri) {
+				return client.target(baseUri);
+			}
+			
+		};
+	}
+	
+
+}
diff --git a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/version/VersionResource.java b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/legacy/ClientRequest.java
similarity index 59%
copy from core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/version/VersionResource.java
copy to core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/legacy/ClientRequest.java
index 535fc72..3fe5886 100644
--- a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/version/VersionResource.java
+++ b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/legacy/ClientRequest.java
@@ -16,30 +16,28 @@
  *  specific language governing permissions and limitations
  *  under the License.
  */
-package org.apache.isis.viewer.restfulobjects.applib.version;
+package org.apache.isis.viewer.legacy;
 
-import javax.ws.rs.*;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
-import org.apache.isis.viewer.restfulobjects.applib.RestfulMediaType;
-import org.jboss.resteasy.annotations.ClientResponseType;
-
-@Path("/version")
-public interface VersionResource {
+/**
+ * Compatibility layer, legacy of deprecated resteasy client API. 
+ * 
+ */
+public interface ClientRequest {
 
-    @GET
-    @Produces({ MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_VERSION })
-    @ClientResponseType(entityType = String.class)
-    public Response version();
+	void accept(MediaType mediaType);
 
-    @DELETE
-    public Response deleteVersionNotAllowed();
+	void header(String headerName, String value);
 
-    @PUT
-    public Response putVersionNotAllowed();
+	void setHttpMethod(String httpMethod);
+	String getHttpMethod();
+	
+	void addQueryParameter(String param, String arg);
+	
+	void jsonPayload(String jsonString);
 
-    @POST
-    public Response postVersionNotAllowed();
+	Response execute();
 
-}
\ No newline at end of file
+}
diff --git a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/version/VersionResource.java b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/legacy/ClientRequestFactory.java
similarity index 55%
copy from core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/version/VersionResource.java
copy to core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/legacy/ClientRequestFactory.java
index 535fc72..2830622 100644
--- a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/version/VersionResource.java
+++ b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/legacy/ClientRequestFactory.java
@@ -16,30 +16,35 @@
  *  specific language governing permissions and limitations
  *  under the License.
  */
-package org.apache.isis.viewer.restfulobjects.applib.version;
+package org.apache.isis.viewer.legacy;
 
-import javax.ws.rs.*;
-import javax.ws.rs.core.MediaType;
-import javax.ws.rs.core.Response;
+import java.net.URI;
 
-import org.apache.isis.viewer.restfulobjects.applib.RestfulMediaType;
-import org.jboss.resteasy.annotations.ClientResponseType;
+/**
+ * Compatibility layer, legacy of deprecated resteasy client API. 
+ * 
+ */
+public interface ClientRequestFactory {
 
-@Path("/version")
-public interface VersionResource {
+	<T> T createProxy(Class<T> clazz);
 
-    @GET
-    @Produces({ MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_VERSION })
-    @ClientResponseType(entityType = String.class)
-    public Response version();
+	URI getBase();
 
-    @DELETE
-    public Response deleteVersionNotAllowed();
+	static ClientRequestFactory of(final ClientExecutor clientExecutor, final URI baseUri) {
+		
+		return new ClientRequestFactory() {
 
-    @PUT
-    public Response putVersionNotAllowed();
+			@Override
+			public <T> T createProxy(Class<T> clazz) {
+				return RestEasyLegacy.proxy(clientExecutor.webTarget(baseUri), clazz);
+			}
 
-    @POST
-    public Response postVersionNotAllowed();
+			@Override
+			public URI getBase() {
+				return baseUri;
+			}
+			
+		};
+	}
 
-}
\ No newline at end of file
+}
diff --git a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/legacy/RestEasyLegacy.java b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/legacy/RestEasyLegacy.java
new file mode 100644
index 0000000..a9cd4b6
--- /dev/null
+++ b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/legacy/RestEasyLegacy.java
@@ -0,0 +1,87 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License.
+ */
+package org.apache.isis.viewer.legacy;
+
+import java.lang.reflect.Method;
+
+import javax.ws.rs.NotSupportedException;
+import javax.ws.rs.client.WebTarget;
+import javax.ws.rs.core.Response;
+
+/**
+ * Compatibility layer, legacy of deprecated resteasy client API. 
+ * 
+ */
+public class RestEasyLegacy {
+
+	public static String getEntityAsStringFrom(Response response) {
+		
+		final Object result = response.getEntity();
+		
+		if(result == null)
+			return null;
+		
+		if(result instanceof String) {
+			return (String) result;
+		}
+		
+		// TODO [andi-huber] just a wild guess
+		return response.readEntity(String.class);
+
+		// legacy code ...
+        // final ClientResponse<?> clientResponse = (ClientResponse<?>) response;
+        // return clientResponse.getEntity(String.class);
+	}
+
+	public static void setReturnTypeToString(Response response) {
+
+		// TODO [andi-huber] why is this needed at all?
+
+		// legacy code ...
+        // final BaseClientResponse<String> restEasyResponse = (BaseClientResponse<String>) response;
+        // restEasyResponse.setReturnType(String.class);
+		
+		System.err.println("WARN RestEasyLegacy - setReturnTypeToString(Response) not implemented!");
+		
+	}
+
+	@SuppressWarnings("unchecked")
+	public static <T> T proxy(WebTarget webTarget, Class<T> clazz) {
+		
+		// legacy of
+		// final org.jboss.resteasy.client.jaxrs.ResteasyWebTarget target = 
+		//		(org.jboss.resteasy.client.jaxrs.ResteasyWebTarget) webTarget;
+		// return target.proxy(clazz);
+		
+		try {
+			// [andi-huber]	resort to reflection, since we wan't to get rid of resteasy legacy
+			// first step is to remove compile time dependencies
+			
+			final Method proxyMethod = 
+					webTarget.getClass().getMethod("proxy", new Class<?>[]{Class.class});
+			return (T) proxyMethod.invoke(webTarget, clazz);
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+		
+		throw new NotSupportedException("proxy not supported by this JAX-RS implementation");
+		
+	}
+
+}
diff --git a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/LinkRepresentation.java b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/LinkRepresentation.java
index a883fe6..3b4d691 100644
--- a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/LinkRepresentation.java
+++ b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/LinkRepresentation.java
@@ -23,10 +23,11 @@ import javax.ws.rs.core.MediaType;
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.node.JsonNodeFactory;
 import com.fasterxml.jackson.databind.node.ObjectNode;
+
+import org.apache.isis.viewer.legacy.ClientExecutor;
 import org.apache.isis.viewer.restfulobjects.applib.client.ClientRequestConfigurer;
 import org.apache.isis.viewer.restfulobjects.applib.client.RestfulRequest;
 import org.apache.isis.viewer.restfulobjects.applib.client.RestfulResponse;
-import org.jboss.resteasy.client.ClientExecutor;
 
 public final class LinkRepresentation extends JsonRepresentation {
 
diff --git a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/RestfulHttpMethod.java b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/RestfulHttpMethod.java
index 6819e7b..b7055b2 100644
--- a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/RestfulHttpMethod.java
+++ b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/RestfulHttpMethod.java
@@ -18,8 +18,8 @@
  */
 package org.apache.isis.viewer.restfulobjects.applib;
 
+import org.apache.isis.viewer.legacy.ClientRequest;
 import org.apache.isis.viewer.restfulobjects.applib.client.ClientRequestConfigurer;
-import org.jboss.resteasy.client.ClientRequest;
 
 public enum RestfulHttpMethod {
     GET(javax.ws.rs.HttpMethod.GET, ArgStrategy.QUERY_STRING), 
diff --git a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/client/ClientRequestConfigurer.java b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/client/ClientRequestConfigurer.java
index 61b9240..b98f8f0 100644
--- a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/client/ClientRequestConfigurer.java
+++ b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/client/ClientRequestConfigurer.java
@@ -21,16 +21,15 @@ package org.apache.isis.viewer.restfulobjects.applib.client;
 import java.util.Map;
 
 import javax.ws.rs.core.MediaType;
-import javax.ws.rs.core.MultivaluedMap;
 import javax.ws.rs.core.UriBuilder;
 
+import org.apache.isis.viewer.legacy.ClientExecutor;
+import org.apache.isis.viewer.legacy.ClientRequest;
 import org.apache.isis.viewer.restfulobjects.applib.JsonRepresentation;
 import org.apache.isis.viewer.restfulobjects.applib.LinkRepresentation;
 import org.apache.isis.viewer.restfulobjects.applib.RestfulHttpMethod;
 import org.apache.isis.viewer.restfulobjects.applib.client.RestfulRequest.RequestParameter;
 import org.apache.isis.viewer.restfulobjects.applib.util.UrlEncodingUtils;
-import org.jboss.resteasy.client.ClientExecutor;
-import org.jboss.resteasy.client.ClientRequest;
 import org.jboss.resteasy.specimpl.ResteasyUriBuilder;
 
 /**
@@ -45,7 +44,10 @@ import org.jboss.resteasy.specimpl.ResteasyUriBuilder;
  */
 public class ClientRequestConfigurer {
 
-    public static ClientRequestConfigurer create(final ClientExecutor executor, final String uriTemplate) {
+    public static ClientRequestConfigurer create(
+    		final ClientExecutor executor, 
+    		final String uriTemplate) 
+    {
         final UriBuilder uriBuilder = new ResteasyUriBuilder().uriTemplate(uriTemplate);
         final ClientRequest clientRequest = executor.createRequest(uriBuilder);
         return new ClientRequestConfigurer(clientRequest, uriBuilder);
@@ -127,7 +129,7 @@ public class ClientRequestConfigurer {
      * {@link RestfulHttpMethod#setUpArgs(ClientRequestConfigurer, JsonRepresentation)}
      */
     public ClientRequestConfigurer body(final JsonRepresentation requestArgs) {
-        clientRequest.body(MediaType.APPLICATION_JSON_TYPE, requestArgs.toString());
+        clientRequest.jsonPayload(requestArgs.toString());
         return this;
     }
 
@@ -149,12 +151,11 @@ public class ClientRequestConfigurer {
      * {@link RestfulHttpMethod#setUpArgs(ClientRequestConfigurer, JsonRepresentation)}
      */
     public ClientRequestConfigurer queryArgs(final JsonRepresentation requestArgs) {
-        final MultivaluedMap<String, String> queryParameters = clientRequest.getQueryParameters();
         for (final Map.Entry<String, JsonRepresentation> entry : requestArgs.mapIterable()) {
             final String param = entry.getKey();
             final JsonRepresentation argRepr = entry.getValue();
             final String arg = UrlEncodingUtils.urlEncode(argRepr.asArg());
-            queryParameters.add(param, arg);
+            clientRequest.addQueryParameter(param, arg);
         }
         return this;
     }
diff --git a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/client/RestfulClient.java b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/client/RestfulClient.java
index 90b3a1f..ee5985f 100644
--- a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/client/RestfulClient.java
+++ b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/client/RestfulClient.java
@@ -20,17 +20,13 @@ package org.apache.isis.viewer.restfulobjects.applib.client;
 
 import java.net.URI;
 
+import javax.ws.rs.client.Client;
+import javax.ws.rs.client.ClientBuilder;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
-import org.apache.http.client.HttpClient;
-import org.apache.http.conn.ClientConnectionManager;
-import org.apache.http.impl.client.DefaultHttpClient;
-import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
-import org.jboss.resteasy.client.ClientExecutor;
-import org.jboss.resteasy.client.ClientRequestFactory;
-import org.jboss.resteasy.client.core.executors.ApacheHttpClient4Executor;
-
+import org.apache.isis.viewer.legacy.ClientExecutor;
+import org.apache.isis.viewer.legacy.ClientRequestFactory;
 import org.apache.isis.viewer.restfulobjects.applib.JsonRepresentation;
 import org.apache.isis.viewer.restfulobjects.applib.LinkRepresentation;
 import org.apache.isis.viewer.restfulobjects.applib.RestfulHttpMethod;
@@ -55,25 +51,17 @@ public class RestfulClient {
 
     
     /**
-     * Using {@link ApacheHttpClient4Executor} and {@link DefaultHttpClient}.
+     * Using {@link javax.ws.rs.client.Client}.
      */
     public RestfulClient(final URI baseUri) {
-        this(baseUri, new ThreadSafeClientConnManager());
-    }
-
-    /**
-     * Using {@link ApacheHttpClient4Executor} and {@link DefaultHttpClient}.
-     */
-    public RestfulClient(final URI baseUri, ClientConnectionManager clientConnectionManager) {
-        this(baseUri, new DefaultHttpClient(clientConnectionManager));
+        this(baseUri, ClientBuilder.newClient());
     }
 
-
     /**
-     * Using {@link ApacheHttpClient4Executor} and specified {@link HttpClient}.
+     * Using {@link javax.ws.rs.client.Client}.
      */
-    public RestfulClient(final URI baseUri, HttpClient client) {
-        this(baseUri, new ApacheHttpClient4Executor(client));
+    public RestfulClient(final URI baseUri, Client client) {
+        this(baseUri, ClientExecutor.of(client));
     }
 
     /**
@@ -81,7 +69,7 @@ public class RestfulClient {
      */
     public RestfulClient(final URI baseUri, final ClientExecutor clientExecutor) {
         this.executor = clientExecutor;
-        this.clientRequestFactory = new ClientRequestFactory(clientExecutor, baseUri);
+        this.clientRequestFactory = ClientRequestFactory.of(clientExecutor, baseUri);
 
         this.homePageResource = clientRequestFactory.createProxy(HomePageResource.class);
         this.userResource = clientRequestFactory.createProxy(UserResource.class);
diff --git a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/client/RestfulRequest.java b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/client/RestfulRequest.java
index 77e0ac2..fbdbd5a 100644
--- a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/client/RestfulRequest.java
+++ b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/client/RestfulRequest.java
@@ -25,8 +25,9 @@ import java.util.Map;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 import com.google.common.collect.Maps;
-import org.jboss.resteasy.client.ClientRequest;
-import org.jboss.resteasy.client.core.BaseClientResponse;
+
+import org.apache.isis.viewer.legacy.ClientRequest;
+import org.apache.isis.viewer.legacy.RestEasyLegacy;
 import org.apache.isis.viewer.restfulobjects.applib.JsonRepresentation;
 import org.apache.isis.viewer.restfulobjects.applib.util.Parser;
 
@@ -173,10 +174,7 @@ public final class RestfulRequest {
             final ClientRequest clientRequest = clientRequestConfigurer.getClientRequest();
             final Response response = clientRequest.execute();
 
-            // this is a bit hacky
-            @SuppressWarnings("unchecked")
-            final BaseClientResponse<String> restEasyResponse = (BaseClientResponse<String>) response;
-            restEasyResponse.setReturnType(String.class);
+            RestEasyLegacy.setReturnTypeToString(response);
 
             return RestfulResponse.ofT(response);
         } catch (final Exception ex) {
diff --git a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/domainobjects/DomainObjectResource.java b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/domainobjects/DomainObjectResource.java
index aa29ef7..625e046 100644
--- a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/domainobjects/DomainObjectResource.java
+++ b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/domainobjects/DomainObjectResource.java
@@ -32,8 +32,6 @@ import javax.ws.rs.QueryParam;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
-import org.jboss.resteasy.annotations.ClientResponseType;
-
 import org.apache.isis.viewer.restfulobjects.applib.RestfulMediaType;
 
 @Path("/objects")
@@ -46,7 +44,7 @@ public interface DomainObjectResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_OBJECT, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_OBJECT, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response persist(@PathParam("domainType") String domainType, final InputStream object);
 
     // //////////////////////////////////////////////////////////
@@ -60,7 +58,7 @@ public interface DomainObjectResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_OBJECT, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_OBJECT, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response object(@PathParam("domainType") String domainType, @PathParam("instanceId") final String instanceId);
 
     @PUT
@@ -70,7 +68,7 @@ public interface DomainObjectResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_OBJECT, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_OBJECT, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response object(@PathParam("domainType") String domainType, @PathParam("instanceId") final String instanceId, final InputStream arguments);
 
     @DELETE
@@ -111,7 +109,7 @@ public interface DomainObjectResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_OBJECT_PROPERTY, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_OBJECT_PROPERTY, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response propertyDetails(@PathParam("domainType") String domainType, @PathParam("instanceId") final String instanceId, @PathParam("propertyId") final String propertyId);
 
     @PUT
@@ -121,7 +119,7 @@ public interface DomainObjectResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_OBJECT_PROPERTY, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_OBJECT_PROPERTY, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response modifyProperty(@PathParam("domainType") String domainType, @PathParam("instanceId") final String instanceId, @PathParam("propertyId") final String propertyId, final InputStream arguments);
 
     @DELETE
@@ -131,7 +129,7 @@ public interface DomainObjectResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_OBJECT_PROPERTY, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_OBJECT_PROPERTY, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response clearProperty(@PathParam("domainType") String domainType, @PathParam("instanceId") final String instanceId, @PathParam("propertyId") final String propertyId);
 
     @POST
@@ -150,7 +148,7 @@ public interface DomainObjectResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_OBJECT_COLLECTION, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_OBJECT_COLLECTION, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response accessCollection(@PathParam("domainType") String domainType, @PathParam("instanceId") final String instanceId, @PathParam("collectionId") final String collectionId);
 
     @PUT
@@ -160,7 +158,7 @@ public interface DomainObjectResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_OBJECT_COLLECTION, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_OBJECT_COLLECTION, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response addToSet(@PathParam("domainType") String domainType, @PathParam("instanceId") final String instanceId, @PathParam("collectionId") final String collectionId, final InputStream arguments);
 
     @POST
@@ -170,7 +168,7 @@ public interface DomainObjectResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_OBJECT_COLLECTION, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_OBJECT_COLLECTION, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response addToList(@PathParam("domainType") String domainType, @PathParam("instanceId") final String instanceId, @PathParam("collectionId") final String collectionId, final InputStream arguments);
 
     @DELETE
@@ -180,7 +178,7 @@ public interface DomainObjectResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_OBJECT_COLLECTION, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_OBJECT_COLLECTION, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response removeFromCollection(@PathParam("domainType") String domainType, @PathParam("instanceId") final String instanceId, @PathParam("collectionId") final String collectionId);
 
     // //////////////////////////////////////////////////////////
@@ -194,7 +192,7 @@ public interface DomainObjectResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_OBJECT_ACTION, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_OBJECT_ACTION, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response actionPrompt(@PathParam("domainType") String domainType, @PathParam("instanceId") final String instanceId, @PathParam("actionId") final String actionId);
 
     @DELETE
@@ -220,7 +218,7 @@ public interface DomainObjectResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_ACTION_RESULT, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_ACTION_RESULT, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response invokeActionQueryOnly(@PathParam("domainType") String domainType, @PathParam("instanceId") final String instanceId, @PathParam("actionId") final String actionId, @QueryParam("x-isis-querystring") final String xIsisQueryString);
 
     @PUT
@@ -230,7 +228,7 @@ public interface DomainObjectResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_ACTION_RESULT, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_ACTION_RESULT, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response invokeActionIdempotent(@PathParam("domainType") String domainType, @PathParam("instanceId") final String instanceId, @PathParam("actionId") final String actionId, final InputStream arguments);
 
     @POST
@@ -240,7 +238,7 @@ public interface DomainObjectResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_ACTION_RESULT, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_ACTION_RESULT, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response invokeAction(@PathParam("domainType") String domainType, @PathParam("instanceId") final String instanceId, @PathParam("actionId") final String actionId, final InputStream arguments);
 
     @DELETE
diff --git a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/domainobjects/DomainServiceResource.java b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/domainobjects/DomainServiceResource.java
index c11cdb7..ce29d1e 100644
--- a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/domainobjects/DomainServiceResource.java
+++ b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/domainobjects/DomainServiceResource.java
@@ -32,8 +32,6 @@ import javax.ws.rs.QueryParam;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
-import org.jboss.resteasy.annotations.ClientResponseType;
-
 import org.apache.isis.viewer.restfulobjects.applib.RestfulMediaType;
 
 @Path("/services")
@@ -42,7 +40,7 @@ public interface DomainServiceResource {
     @GET
     @Path("/")
     @Produces({ MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_LIST, RestfulMediaType.APPLICATION_JSON_ERROR })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response services();
 
     @DELETE
@@ -67,7 +65,7 @@ public interface DomainServiceResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_OBJECT, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_OBJECT, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response service(@PathParam("serviceId") final String serviceId);
 
     @DELETE
@@ -94,7 +92,7 @@ public interface DomainServiceResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_OBJECT_ACTION, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_OBJECT_ACTION, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response actionPrompt(@PathParam("serviceId") final String serviceId, @PathParam("actionId") final String actionId);
 
     @DELETE
@@ -127,7 +125,7 @@ public interface DomainServiceResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_ACTION_RESULT, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_ACTION_RESULT, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response invokeActionQueryOnly(@PathParam("serviceId") final String serviceId, @PathParam("actionId") final String actionId, @QueryParam("x-isis-querystring") final String xIsisQueryString);
 
     @PUT
@@ -137,7 +135,7 @@ public interface DomainServiceResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_ACTION_RESULT, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_ACTION_RESULT, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response invokeActionIdempotent(@PathParam("serviceId") final String serviceId, @PathParam("actionId") final String actionId, final InputStream arguments);
 
     @POST
@@ -147,7 +145,7 @@ public interface DomainServiceResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_ACTION_RESULT, RestfulMediaType.APPLICATION_JSON_ERROR,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_ACTION_RESULT, RestfulMediaType.APPLICATION_XML_ERROR
     })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response invokeAction(@PathParam("serviceId") final String serviceId, @PathParam("actionId") final String actionId, final InputStream arguments);
 
     @DELETE
diff --git a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/domaintypes/DomainTypeResource.java b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/domaintypes/DomainTypeResource.java
index fde2a14..b7f33ad 100644
--- a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/domaintypes/DomainTypeResource.java
+++ b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/domaintypes/DomainTypeResource.java
@@ -26,8 +26,6 @@ import javax.ws.rs.QueryParam;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
-import org.jboss.resteasy.annotations.ClientResponseType;
-
 import org.apache.isis.viewer.restfulobjects.applib.RestfulMediaType;
 
 @Path("/domain-types")
@@ -40,7 +38,7 @@ public interface DomainTypeResource {
     @GET
     @Path("/")
     @Produces({ MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_TYPE_LIST })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public abstract Response domainTypes();
 
     // /////////////////////////////////////////////////////
@@ -50,7 +48,7 @@ public interface DomainTypeResource {
     @GET
     @Path("/{domainType}")
     @Produces({ MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_DOMAIN_TYPE })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public abstract Response domainType(@PathParam("domainType") final String domainType);
 
     @GET
@@ -59,30 +57,31 @@ public interface DomainTypeResource {
             MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_LAYOUT_BS3,
             MediaType.APPLICATION_XML, RestfulMediaType.APPLICATION_XML_LAYOUT_BS3
     })
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public abstract Response layout(@PathParam("domainType") final String domainType);
 
     @GET
     @Path("/{domainType}/properties/{propertyId}")
     @Produces({ MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_PROPERTY_DESCRIPTION })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public abstract Response typeProperty(@PathParam("domainType") final String domainType, @PathParam("propertyId") final String propertyId);
 
     @GET
     @Path("/{domainType}/collections/{collectionId}")
     @Produces({ MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_COLLECTION_DESCRIPTION })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public abstract Response typeCollection(@PathParam("domainType") final String domainType, @PathParam("collectionId") final String collectionId);
 
     @GET
     @Path("/{domainType}/actions/{actionId}")
     @Produces({ MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_ACTION_DESCRIPTION })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public abstract Response typeAction(@PathParam("domainType") final String domainType, @PathParam("actionId") final String actionId);
 
     @GET
     @Path("/{domainType}/actions/{actionId}/params/{paramNum}")
     @Produces({ MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_ACTION_PARAMETER_DESCRIPTION })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public abstract Response typeActionParam(@PathParam("domainType") final String domainType, @PathParam("actionId") final String actionId, @PathParam("paramNum") final String paramName);
 
     // //////////////////////////////////////////////////////////
@@ -92,7 +91,7 @@ public interface DomainTypeResource {
     @GET
     @Path("/{domainType}/isSubtypeOf/invoke")
     @Produces({ MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_TYPE_ACTION_RESULT, RestfulMediaType.APPLICATION_JSON_ERROR })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public abstract Response domainTypeIsSubtypeOf(
             @PathParam("domainType") final String domainType, 
             @QueryParam("supertype") String superType, // simple style
@@ -102,7 +101,7 @@ public interface DomainTypeResource {
     @GET
     @Path("/{domainType}/isSupertypeOf/invoke")
     @Produces({ MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_TYPE_ACTION_RESULT, RestfulMediaType.APPLICATION_JSON_ERROR })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public abstract Response domainTypeIsSupertypeOf(
             @PathParam("domainType") final String domainType, 
             @QueryParam("supertype") String superType, // simple style
diff --git a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/homepage/HomePageResource.java b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/homepage/HomePageResource.java
index 497ef69..80df521 100644
--- a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/homepage/HomePageResource.java
+++ b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/homepage/HomePageResource.java
@@ -18,19 +18,23 @@
  */
 package org.apache.isis.viewer.restfulobjects.applib.homepage;
 
-import javax.ws.rs.*;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.PUT;
+import javax.ws.rs.Path;
+import javax.ws.rs.Produces;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
 import org.apache.isis.viewer.restfulobjects.applib.RestfulMediaType;
-import org.jboss.resteasy.annotations.ClientResponseType;
 
 @Path("/")
 public interface HomePageResource {
 
     @GET
     @Produces({ MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_HOME_PAGE })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response homePage();
 
     @DELETE
@@ -49,7 +53,7 @@ public interface HomePageResource {
     @GET
     @Path("/notAuthenticated")
     @Produces({ MediaType.APPLICATION_JSON })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response notAuthenticated();
 
 }
\ No newline at end of file
diff --git a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/user/UserResource.java b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/user/UserResource.java
index afcc179..f28b774 100644
--- a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/user/UserResource.java
+++ b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/user/UserResource.java
@@ -27,8 +27,6 @@ import javax.ws.rs.Produces;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
-import org.jboss.resteasy.annotations.ClientResponseType;
-
 import org.apache.isis.viewer.restfulobjects.applib.RestfulMediaType;
 
 @Path("/user")
@@ -36,7 +34,7 @@ public interface UserResource {
 
     @GET
     @Produces({ MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_USER })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response user();
 
     @DELETE
@@ -54,7 +52,7 @@ public interface UserResource {
     @GET
     @Path("/logout")
     @Produces({ MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_HOME_PAGE })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response logout();
 
 }
\ No newline at end of file
diff --git a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/util/JsonMapper.java b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/util/JsonMapper.java
index 8e7179f..bb53752 100644
--- a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/util/JsonMapper.java
+++ b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/util/JsonMapper.java
@@ -38,7 +38,8 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.SerializationFeature;
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.module.SimpleModule;
-import org.jboss.resteasy.client.ClientResponse;
+
+import org.apache.isis.viewer.legacy.RestEasyLegacy;
 import org.apache.isis.viewer.restfulobjects.applib.JsonRepresentation;
 
 public final class JsonMapper {
@@ -115,8 +116,7 @@ public final class JsonMapper {
     }
 
     public <T> T read(final Response response, final Class<T> requiredType) throws JsonParseException, JsonMappingException, IOException {
-        final ClientResponse<?> clientResponse = (ClientResponse<?>) response; // a shame, but needed if calling resources directly.
-        final String entity = clientResponse.getEntity(String.class);
+    	final String entity = RestEasyLegacy.getEntityAsStringFrom(response);
         if (entity == null) {
             return null;
         }
diff --git a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/version/VersionResource.java b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/version/VersionResource.java
index 535fc72..bb6cc50 100644
--- a/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/version/VersionResource.java
+++ b/core/viewer-restfulobjects-applib/src/main/java/org/apache/isis/viewer/restfulobjects/applib/version/VersionResource.java
@@ -23,14 +23,13 @@ import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 
 import org.apache.isis.viewer.restfulobjects.applib.RestfulMediaType;
-import org.jboss.resteasy.annotations.ClientResponseType;
 
 @Path("/version")
 public interface VersionResource {
 
     @GET
     @Produces({ MediaType.APPLICATION_JSON, RestfulMediaType.APPLICATION_JSON_VERSION })
-    @ClientResponseType(entityType = String.class)
+    //TODO deprecated @ClientResponseType(entityType = String.class)
     public Response version();
 
     @DELETE
diff --git a/core/viewer-restfulobjects-rendering/src/main/java/org/apache/isis/viewer/restfulobjects/rendering/service/conneg/IsisPrettyPrintingProcessor.java b/core/viewer-restfulobjects-rendering/src/main/java/org/apache/isis/viewer/restfulobjects/rendering/service/conneg/IsisPrettyPrintingProcessor.java
index d26c2e3..94140d1 100644
--- a/core/viewer-restfulobjects-rendering/src/main/java/org/apache/isis/viewer/restfulobjects/rendering/service/conneg/IsisPrettyPrintingProcessor.java
+++ b/core/viewer-restfulobjects-rendering/src/main/java/org/apache/isis/viewer/restfulobjects/rendering/service/conneg/IsisPrettyPrintingProcessor.java
@@ -22,7 +22,7 @@ import javax.ws.rs.core.MediaType;
 import javax.xml.bind.Marshaller;
 
 import org.jboss.resteasy.annotations.DecorateTypes;
-import org.jboss.resteasy.spi.interception.DecoratorProcessor;
+import org.jboss.resteasy.spi.DecoratorProcessor;
 
 import org.apache.isis.core.commons.config.IsisConfiguration;
 import org.apache.isis.core.metamodel.deployment.DeploymentCategory;
diff --git a/core/viewer-restfulobjects-server/src/main/java/org/apache/isis/viewer/restfulobjects/server/webapp/PreProcessInterceptorForIsisSession.java b/core/viewer-restfulobjects-server/src/main/java/org/apache/isis/viewer/restfulobjects/server/webapp/PreProcessInterceptorForIsisSession.java
index 90b9ad6..da953f3 100644
--- a/core/viewer-restfulobjects-server/src/main/java/org/apache/isis/viewer/restfulobjects/server/webapp/PreProcessInterceptorForIsisSession.java
+++ b/core/viewer-restfulobjects-server/src/main/java/org/apache/isis/viewer/restfulobjects/server/webapp/PreProcessInterceptorForIsisSession.java
@@ -21,19 +21,23 @@ package org.apache.isis.viewer.restfulobjects.server.webapp;
 import javax.ws.rs.WebApplicationException;
 import javax.ws.rs.ext.Provider;
 
-import org.jboss.resteasy.annotations.interception.ServerInterceptor;
+//deprecated import org.jboss.resteasy.annotations.interception.ServerInterceptor;
 import org.jboss.resteasy.core.ResourceMethodInvoker;
 import org.jboss.resteasy.core.ServerResponse;
 import org.jboss.resteasy.spi.Failure;
 import org.jboss.resteasy.spi.HttpRequest;
-import org.jboss.resteasy.spi.interception.PreProcessInterceptor;
+//deprecated import org.jboss.resteasy.spi.interception.PreProcessInterceptor;
+
+//FIXME [ahuber] what to do?
 
 @Provider
-@ServerInterceptor
-public class PreProcessInterceptorForIsisSession implements PreProcessInterceptor {
+//deprecated @ServerInterceptor
+public class PreProcessInterceptorForIsisSession //deprecated implements PreProcessInterceptor 
+{
 
+	/* deprecated
     @Override
     public ServerResponse preProcess(HttpRequest httpRequest, ResourceMethodInvoker resourceMethodInvoker) throws Failure, WebApplicationException {
         return null;
-    }
+    }*/
 }

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