jarek/7653: support autotranslation for clojure

kernel/base/src/main/java/com/twosigma/beakerx/BaseBeakerXJsonSerializer.java

@@ -0,0 +1,68 @@
+/*
+ *  Copyright 2018 TWO SIGMA OPEN SOURCE, LLC
+ *
+ *  Licensed 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 com.twosigma.beakerx;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.twosigma.beakerx.jvm.serialization.BeakerObjectConverter;
+import com.twosigma.beakerx.table.TableDisplayToJson;
+
+import java.io.IOException;
+import java.io.StringWriter;
+
+import static com.fasterxml.jackson.databind.SerializationFeature.WRITE_ENUMS_USING_TO_STRING;
+
+public abstract class BaseBeakerXJsonSerializer implements BeakerXJsonSerializer {
+
+  private final ObjectMapper objectMapper;
+  private final BeakerObjectConverter serializer;
+
+  public BaseBeakerXJsonSerializer() {
+    this.objectMapper = new ObjectMapper();
+    this.objectMapper.enable(WRITE_ENUMS_USING_TO_STRING);
+    this.objectMapper.registerModule(TableDisplayToJson.tableDisplayModule());
+    this.serializer = createSerializer();
+  }
+
+  protected abstract BeakerObjectConverter createSerializer();
+
+  @Override
+  public String toJson(Object value) {
+    StringWriter sw = new StringWriter();
+    try {
+      JsonGenerator jgen = objectMapper.getFactory().createGenerator(sw);
+      boolean success = serializer.writeObject(value, jgen, true);
+      jgen.flush();
+      sw.flush();
+      if (success) {
+        return sw.toString();
+      } else {
+        return value.toString();
+      }
+    } catch (IOException e) {
+      throw new RuntimeException(e);
+    }
+  }
+
+  @Override
+  public Object fromJson(String json) {
+    try {
+      return serializer.deserialize(objectMapper.readTree(json), objectMapper);
+    } catch (IOException e) {
+      throw new RuntimeException(e);
+    }
+  }
+}

kernel/base/src/main/java/com/twosigma/beakerx/DefaultBeakerXJsonSerializer.java

@@ -15,49 +15,13 @@
  */
 package com.twosigma.beakerx;
 
-import com.fasterxml.jackson.core.JsonGenerator;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import com.twosigma.beakerx.jvm.serialization.BasicObjectSerializer;
-import com.twosigma.beakerx.table.TableDisplayToJson;
+import com.twosigma.beakerx.jvm.serialization.BeakerObjectConverter;
 
-import java.io.IOException;
-import java.io.StringWriter;
-
-import static com.fasterxml.jackson.databind.SerializationFeature.WRITE_ENUMS_USING_TO_STRING;
-
-public class DefaultBeakerXJsonSerializer implements BeakerXJsonSerializer {
-
-  private final BasicObjectSerializer objectSerializer;
-  private ObjectMapper objectMapper;
-
-  public DefaultBeakerXJsonSerializer() {
-    this.objectMapper = new ObjectMapper();
-    objectMapper.enable(WRITE_ENUMS_USING_TO_STRING);
-    objectMapper.registerModule(TableDisplayToJson.tableDisplayModule());
-    objectSerializer = new BasicObjectSerializer();
-  }
+public class DefaultBeakerXJsonSerializer extends BaseBeakerXJsonSerializer {
 
   @Override
-  public String toJson(Object value) {
-    try {
-      StringWriter sw = new StringWriter();
-      JsonGenerator jgen = objectMapper.getFactory().createGenerator(sw);
-      objectSerializer.writeObject(value, jgen, true);
-      jgen.flush();
-      sw.flush();
-      return sw.toString();
-    } catch (IOException e) {
-      throw new RuntimeException(e);
-    }
+  protected BeakerObjectConverter createSerializer() {
+    return new BasicObjectSerializer();
   }
-
-  @Override
-  public Object fromJson(String json) {
-    try {
-      return objectMapper.readValue(json, Object.class);
-    } catch (IOException e) {
-      throw new RuntimeException(e);
-    }
-  }
-
 }

kernel/base/src/main/java/com/twosigma/beakerx/NamespaceClient.java

@@ -17,7 +17,7 @@
 
 import com.twosigma.beakerx.evaluator.InternalVariable;
 import com.twosigma.beakerx.jvm.object.SimpleEvaluationObject;
-import com.twosigma.beakerx.kernel.KernelConfigurationFile;
+import com.twosigma.beakerx.kernel.ConfigurationFile;
 import com.twosigma.beakerx.kernel.comm.Comm;
 import com.twosigma.beakerx.kernel.comm.TargetNamesEnum;
 
@@ -170,12 +170,12 @@ public String getContext() {
     return this.autotranslationService.getContextAsString();
   }
 
-  public static NamespaceClient create(String id, KernelConfigurationFile configurationFile, CommRepository commRepository) {
+  public static NamespaceClient create(String id, ConfigurationFile configurationFile, CommRepository commRepository) {
     return create(id, configurationFile, new DefaultBeakerXJsonSerializer(), commRepository);
   }
 
   public static NamespaceClient create(String id,
-                                       KernelConfigurationFile configurationFile,
+                                       ConfigurationFile configurationFile,
                                        BeakerXJsonSerializer serializer,
                                        CommRepository commRepository) {
     if (configurationFile.getContext().isPresent()) {