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/*
* 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.qpid.disttest.json;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.qpid.disttest.client.property.GeneratedPropertyValue;
import org.apache.qpid.disttest.client.property.PropertyValue;
import org.apache.qpid.disttest.client.property.PropertyValueFactory;
import org.apache.qpid.disttest.client.property.SimplePropertyValue;
import com.google.gson.JsonArray;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import com.google.gson.JsonPrimitive;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
public class PropertyValueAdapter implements JsonDeserializer<PropertyValue>, JsonSerializer<PropertyValue>
{
private static final String DEF_FIELD = "@def";
private PropertyValueFactory _factory = new PropertyValueFactory();
@Override
public PropertyValue deserialize(JsonElement json, Type type, JsonDeserializationContext context)
throws JsonParseException
{
if (json.isJsonNull())
{
return null;
}
else if (json.isJsonPrimitive())
{
Object result = null;
JsonPrimitive primitive = json.getAsJsonPrimitive();
if (primitive.isString())
{
result = primitive.getAsString();
}
else if (primitive.isNumber())
{
String asString = primitive.getAsString();
if (asString.indexOf('.') != -1 || asString.indexOf('e') != -1)
{
result = primitive.getAsDouble();
}
else
{
result = primitive.getAsLong();
}
}
else if (primitive.isBoolean())
{
result = primitive.getAsBoolean();
}
else
{
throw new JsonParseException("Unsupported primitive value " + primitive);
}
return new SimplePropertyValue(result);
}
else if (json.isJsonArray())
{
JsonArray array = json.getAsJsonArray();
List<Object> result = new ArrayList<Object>(array.size());
for (JsonElement element : array)
{
result.add(context.deserialize(element, Object.class));
}
return new SimplePropertyValue(result);
}
else if (json.isJsonObject())
{
JsonObject object = json.getAsJsonObject();
JsonElement defElement = object.getAsJsonPrimitive(DEF_FIELD);
Class<?> classInstance = null;
if (defElement != null)
{
try
{
classInstance = _factory.getPropertyValueClass(defElement.getAsString());
}
catch (ClassNotFoundException e)
{
// ignore
}
}
if (classInstance == null)
{
Map<String, Object> result = new HashMap<String, Object>();
for (Map.Entry<String, JsonElement> entry : object.entrySet())
{
Object value = context.deserialize(entry.getValue(), Object.class);
result.put(entry.getKey(), value);
}
return new SimplePropertyValue(result);
}
else
{
return context.deserialize(json, classInstance);
}
}
else
{
throw new JsonParseException("Unsupported JSON type " + json);
}
}
@Override
public JsonElement serialize(PropertyValue src, Type typeOfSrc, JsonSerializationContext context)
{
if (src instanceof GeneratedPropertyValue)
{
JsonObject object = (JsonObject) context.serialize(src, Object.class);
object.addProperty(DEF_FIELD, ((GeneratedPropertyValue) src).getDefinition());
return object;
}
else
{
return context.serialize(src.getValue(), Object.class);
}
}
}
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