Enhance the JSON databindign with Jackson 1.5.0

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@930100 13f79535-47bb-0310-9956-ffa450edef68

3 files changed, 105 insertions, 19 deletions

diff --git a/sca-java-2.x/trunk/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/jackson/JSON2Object.java b/sca-java-2.x/trunk/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/jackson/JSON2Object.java
index 6e9f0623f1..5edcc6701e 100644
--- a/sca-java-2.x/trunk/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/jackson/JSON2Object.java
+++ b/sca-java-2.x/trunk/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/jackson/JSON2Object.java
@@ -26,12 +26,9 @@ import org.apache.tuscany.sca.databinding.javabeans.JavaBeansDataBinding;
 import org.apache.tuscany.sca.databinding.json.JSONDataBinding;
 import org.codehaus.jackson.JsonNode;
 import org.codehaus.jackson.JsonParser;
-import org.codehaus.jackson.map.AnnotationIntrospector;
 import org.codehaus.jackson.map.ObjectMapper;
-import org.codehaus.jackson.map.introspect.JacksonAnnotationIntrospector;
 import org.codehaus.jackson.map.type.TypeFactory;
 import org.codehaus.jackson.type.JavaType;
-import org.codehaus.jackson.xc.JaxbAnnotationIntrospector;
 
 /**
  * @version $Rev$ $Date$
@@ -41,12 +38,7 @@ public class JSON2Object implements PullTransformer<Object, Object> {
 
     public JSON2Object() {
         super();
-        mapper = new ObjectMapper();
-        AnnotationIntrospector primary = new JaxbAnnotationIntrospector();
-        AnnotationIntrospector secondary = new JacksonAnnotationIntrospector();
-        AnnotationIntrospector pair = new AnnotationIntrospector.Pair(primary, secondary);
-        mapper.getDeserializationConfig().setAnnotationIntrospector(pair);
-        mapper.getSerializationConfig().setAnnotationIntrospector(pair);
+        mapper = JacksonHelper.createObjectMapper();
     }
 
     public Object transform(Object source, TransformationContext context) {
diff --git a/sca-java-2.x/trunk/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/jackson/JacksonHelper.java b/sca-java-2.x/trunk/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/jackson/JacksonHelper.java
new file mode 100644
index 0000000000..1e3399017c
--- /dev/null
+++ b/sca-java-2.x/trunk/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/jackson/JacksonHelper.java
@@ -0,0 +1,82 @@
+/*
+ * 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.tuscany.sca.databinding.json.jackson;
+
+import java.io.IOException;
+import java.io.StringWriter;
+
+import org.codehaus.jackson.JsonFactory;
+import org.codehaus.jackson.JsonGenerator;
+import org.codehaus.jackson.JsonNode;
+import org.codehaus.jackson.JsonParser;
+import org.codehaus.jackson.map.AnnotationIntrospector;
+import org.codehaus.jackson.map.ObjectMapper;
+import org.codehaus.jackson.map.introspect.JacksonAnnotationIntrospector;
+import org.codehaus.jackson.xc.JaxbAnnotationIntrospector;
+
+/**
+ * 
+ */
+public class JacksonHelper {
+    public static ObjectMapper createObjectMapper() {
+        ObjectMapper mapper = new ObjectMapper();
+        AnnotationIntrospector primary = new JaxbAnnotationIntrospector();
+        AnnotationIntrospector secondary = new JacksonAnnotationIntrospector();
+        AnnotationIntrospector pair = new AnnotationIntrospector.Pair(primary, secondary);
+        mapper.getDeserializationConfig().setAnnotationIntrospector(pair);
+        mapper.getSerializationConfig().setAnnotationIntrospector(pair);
+        return mapper;
+    }
+
+    public static String toString(JsonNode node) {
+        try {
+            JsonFactory jsonFactory = new JsonFactory();
+            StringWriter sw = new StringWriter();
+            JsonGenerator generator = jsonFactory.createJsonGenerator(sw);
+            generator.writeTree(node);
+            return sw.toString();
+        } catch (IOException e) {
+            throw new IllegalArgumentException(e);
+        }
+    }
+
+    public static String toString(JsonParser parser) {
+        try {
+            JsonFactory jsonFactory = new JsonFactory();
+            StringWriter sw = new StringWriter();
+            JsonGenerator generator = jsonFactory.createJsonGenerator(sw);
+            JsonNode node = parser.readValueAs(JsonNode.class);
+            generator.writeTree(node);
+            return sw.toString();
+        } catch (IOException e) {
+            throw new IllegalArgumentException(e);
+        }
+    }
+
+    public static JsonParser createJsonParser(String content) {
+        JsonFactory jsonFactory = new JsonFactory();
+        try {
+            return jsonFactory.createJsonParser(content);
+        } catch (IOException e) {
+            throw new IllegalArgumentException(e);
+        }
+    }
+
+}
diff --git a/sca-java-2.x/trunk/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/jackson/Object2JSON.java b/sca-java-2.x/trunk/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/jackson/Object2JSON.java
index 340cf99f37..bd99dfd881 100644
--- a/sca-java-2.x/trunk/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/jackson/Object2JSON.java
+++ b/sca-java-2.x/trunk/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/jackson/Object2JSON.java
@@ -24,10 +24,10 @@ import org.apache.tuscany.sca.databinding.TransformationContext;
 import org.apache.tuscany.sca.databinding.TransformationException;
 import org.apache.tuscany.sca.databinding.javabeans.JavaBeansDataBinding;
 import org.apache.tuscany.sca.databinding.json.JSONDataBinding;
-import org.codehaus.jackson.map.AnnotationIntrospector;
+import org.apache.tuscany.sca.databinding.json.JSONHelper;
+import org.codehaus.jackson.JsonNode;
+import org.codehaus.jackson.JsonParser;
 import org.codehaus.jackson.map.ObjectMapper;
-import org.codehaus.jackson.map.introspect.JacksonAnnotationIntrospector;
-import org.codehaus.jackson.xc.JaxbAnnotationIntrospector;
 
 /**
  * @version $Rev$ $Date$
@@ -37,12 +37,7 @@ public class Object2JSON implements PullTransformer<Object, Object> {
 
     public Object2JSON() {
         super();
-        mapper = new ObjectMapper();
-        AnnotationIntrospector primary = new JacksonAnnotationIntrospector();
-        AnnotationIntrospector secondary = new JaxbAnnotationIntrospector();
-        AnnotationIntrospector pair = new AnnotationIntrospector.Pair(primary, secondary);
-        mapper.getDeserializationConfig().setAnnotationIntrospector(pair);
-        mapper.getSerializationConfig().setAnnotationIntrospector(pair);
+        mapper = JacksonHelper.createObjectMapper();
     }
 
     public Object transform(Object source, TransformationContext context) {
@@ -50,8 +45,25 @@ public class Object2JSON implements PullTransformer<Object, Object> {
             return null;
         }
 
+        Class<?> targetType = null;
+        if (context != null && context.getTargetDataType() != null) {
+            targetType = context.getTargetDataType().getPhysical();
+        }
+        if (targetType == null) {
+            targetType = String.class;
+        }
         try {
-            return mapper.writeValueAsString(source);
+            String value = mapper.writeValueAsString(source);
+            if (targetType == String.class) {
+                return value;
+            } else if (JsonNode.class.isAssignableFrom(targetType)) {
+                return JacksonHelper.createJsonParser(value).readValueAsTree();
+            }
+            if (JsonParser.class.isAssignableFrom(targetType)) {
+                return JacksonHelper.createJsonParser(value);
+            } else {
+                return JSONHelper.toJSON(value, targetType);
+            }
         } catch (Exception e) {
             throw new TransformationException(e);
         }