Sandbox to experiment with dynamic mass virtual hosting and running a different composite per vhost.

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1063520 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 181 insertions, 0 deletions

diff --git a/sandbox/sebastien/java/vhost/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/jackson/JacksonHelper.java b/sandbox/sebastien/java/vhost/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/jackson/JacksonHelper.java
new file mode 100644
index 0000000000..459462fa97
--- /dev/null
+++ b/sandbox/sebastien/java/vhost/modules/databinding-json/src/main/java/org/apache/tuscany/sca/databinding/json/jackson/JacksonHelper.java
@@ -0,0 +1,181 @@
+/*
+ * 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.InputStream;
+import java.io.OutputStream;
+import java.io.Reader;
+import java.io.StringWriter;
+
+import javax.xml.bind.annotation.adapters.XmlAdapter;
+import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
+import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapters;
+
+import org.codehaus.jackson.JsonEncoding;
+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.DeserializationConfig;
+import org.codehaus.jackson.map.MappingJsonFactory;
+import org.codehaus.jackson.map.ObjectMapper;
+import org.codehaus.jackson.map.annotate.JsonSerialize;
+import org.codehaus.jackson.map.deser.CustomDeserializerFactory;
+import org.codehaus.jackson.map.deser.StdDeserializerProvider;
+import org.codehaus.jackson.map.introspect.JacksonAnnotationIntrospector;
+import org.codehaus.jackson.map.ser.CustomSerializerFactory;
+import org.codehaus.jackson.xc.JaxbAnnotationIntrospector;
+import org.codehaus.jackson.xc.XmlAdapterJsonDeserializer;
+import org.codehaus.jackson.xc.XmlAdapterJsonSerializer;
+
+/**
+ * 
+ */
+public class JacksonHelper {
+    private final static ObjectMapper MAPPER = createMapper();
+    private final static JsonFactory FACTORY = new MappingJsonFactory(createMapper());
+
+    public static ObjectMapper createMapper() {
+        return createObjectMapper(null);
+    }
+
+    @SuppressWarnings({"rawtypes", "unchecked"})
+    public static ObjectMapper createObjectMapper(Class<?> cls) {
+        ObjectMapper mapper = null;
+        if (cls != null) {
+            // Workaround for http://jira.codehaus.org/browse/JACKSON-413
+            Package pkg = cls.getPackage();
+            if (pkg != null) {
+                XmlJavaTypeAdapters adapters = pkg.getAnnotation(XmlJavaTypeAdapters.class);
+                if (adapters != null) {
+                    CustomSerializerFactory serializerFactory = new CustomSerializerFactory();
+                    CustomDeserializerFactory deserializerFactory = new CustomDeserializerFactory();
+                    for (XmlJavaTypeAdapter a : adapters.value()) {
+                        XmlAdapter xmlAdapter = null;
+                        try {
+                            xmlAdapter = a.value().newInstance();
+                        } catch (Throwable e) {
+                            // Ignore
+                        }
+                        if (xmlAdapter != null) {
+                            XmlAdapterJsonDeserializer deserializer = new XmlAdapterJsonDeserializer(xmlAdapter);
+                            XmlAdapterJsonSerializer serializer = new XmlAdapterJsonSerializer(xmlAdapter);
+                            deserializerFactory.addSpecificMapping(a.type(), deserializer);
+                            serializerFactory.addGenericMapping(a.type(), serializer);
+                            StdDeserializerProvider deserializerProvider =
+                                new StdDeserializerProvider(deserializerFactory);
+                            mapper = new ObjectMapper();
+                            mapper.setSerializerFactory(serializerFactory);
+                            mapper.setDeserializerProvider(deserializerProvider);
+                        }
+                    }
+                }
+            }
+        }
+        if (mapper == null) {
+            mapper = new ObjectMapper();
+        }
+        AnnotationIntrospector primary = new JaxbAnnotationIntrospector();
+        AnnotationIntrospector secondary = new JacksonAnnotationIntrospector();
+        AnnotationIntrospector pair = new AnnotationIntrospector.Pair(primary, secondary);
+        mapper.getDeserializationConfig().setAnnotationIntrospector(pair);
+        // [rfeng] To avoid complaints about javaClass
+        mapper.getDeserializationConfig().set(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, Boolean.FALSE);
+        mapper.getSerializationConfig().setAnnotationIntrospector(pair);
+        mapper.getSerializationConfig().setSerializationInclusion(JsonSerialize.Inclusion.NON_NULL);
+        return mapper;
+    }
+
+    public static JsonFactory getJsonFactory() {
+        return FACTORY;
+    }
+
+    public static String toString(JsonNode node) {
+        try {
+            return MAPPER.writeValueAsString(node);
+        } catch (IOException e) {
+            throw new IllegalArgumentException(e);
+        }
+    }
+
+    public static String toString(JsonParser parser) {
+        try {
+            JsonFactory jsonFactory = getJsonFactory();
+            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 = getJsonFactory();
+        try {
+            return jsonFactory.createJsonParser(content);
+        } catch (IOException e) {
+            throw new IllegalArgumentException(e);
+        }
+    }
+
+    public static JsonParser createJsonParser(InputStream content) {
+        JsonFactory jsonFactory = getJsonFactory();
+        try {
+            return jsonFactory.createJsonParser(content);
+        } catch (IOException e) {
+            throw new IllegalArgumentException(e);
+        }
+    }
+
+    public static JsonParser createJsonParser(Reader content) {
+        JsonFactory jsonFactory = getJsonFactory();
+        try {
+            return jsonFactory.createJsonParser(content);
+        } catch (IOException e) {
+            throw new IllegalArgumentException(e);
+        }
+    }
+
+    public static void write(JsonNode node, OutputStream out) {
+        try {
+            JsonFactory jsonFactory = getJsonFactory();
+            JsonGenerator generator = jsonFactory.createJsonGenerator(out, JsonEncoding.UTF8);
+            generator.writeTree(node);
+        } catch (IOException e) {
+            throw new IllegalArgumentException(e);
+        }
+    }
+
+    public static void write(JsonParser parser, OutputStream out) {
+        try {
+            JsonFactory jsonFactory = getJsonFactory();
+            JsonGenerator generator = jsonFactory.createJsonGenerator(out, JsonEncoding.UTF8);
+            JsonNode node = parser.readValueAs(JsonNode.class);
+            generator.writeTree(node);
+        } catch (IOException e) {
+            throw new IllegalArgumentException(e);
+        }
+    }
+
+}