private void SerializeDictionaryGeneric <TValue>(ISerializerNode node,
Writer writer,
DictionaryTypeSpec dictType)
{
var jsonWriter = writer.JsonWriter;
var dict = (IDictionary <string, TValue>)node.Value;
var expectedValueType = dictType.ValueType;
jsonWriter.WriteStartObject();
var dictDelta = dict as IDictionaryDelta <string, TValue>;
var serializedKeyValuePairs = dictDelta != null ? dictDelta.ModifiedItems : dict;
if (dictDelta != null && dictDelta.RemovedKeys.Any())
{
foreach (var removed in dictDelta.RemovedKeys)
{
jsonWriter.WritePropertyName("-" + EscapePropertyName(removed));
jsonWriter.WriteStartObject();
jsonWriter.WriteEndObject();
}
}
foreach (var kvp in serializedKeyValuePairs)
{
// TODO: Support other key types than string
jsonWriter.WritePropertyName(EscapePropertyName(kvp.Key));
var itemNode = new ItemValueSerializerNode(kvp.Value, expectedValueType, node.ExpandPath, node.Context, node);
SerializeThroughContext(itemNode, writer);
}
jsonWriter.WriteEndObject();
}
private void SerializeNodeInner(ISerializerNode node, Writer writer)
{
if (node.Value == null)
{
writer.JsonWriter.WriteNull();
return;
}
var mappedType = node.ExpectedBaseType ?? node.ValueType;
if (mappedType == typeof(object))
{
mappedType = node.ValueType;
}
switch (mappedType.SerializationMode)
{
case TypeSerializationMode.Dictionary:
SerializeDictionary(node, writer);
break;
case TypeSerializationMode.Structured:
SerializeComplex(node, writer);
break;
case TypeSerializationMode.Array:
SerializeCollection(node, writer);
break;
case TypeSerializationMode.Value:
SerializeValue(node, writer);
break;
}
}
public void Serialize(ISerializerNode node, Action<ISerializerNode> serializeNodeAction)
{
if (node.Value is IClientResource && !(node.Value is PostResourceBase) && !(node.Value is IDelta) &&
!node.IsRemoved)
{
node.SerializeAsReference = true;
}
serializeNodeAction(node);
}
public ItemValueSerializerNode(object value,
TypeSpec expectedBaseType,
string expandPath,
ISerializationContext context,
ISerializerNode parentNode,
bool isRemoved = false)
: base(expectedBaseType, expandPath, context, parentNode, isRemoved)
{
Value = value;
}
public ItemValueSerializerNode(object value,
TypeSpec expectedBaseType,
string expandPath,
ISerializationContext context,
ISerializerNode parentNode,
bool isRemoved = false)
: base(expectedBaseType, expandPath, context, parentNode, isRemoved)
{
Value = value;
}
private static string GetExpandPath(ISerializerNode parentNode, PropertySpec property)
{
if (string.IsNullOrEmpty(parentNode.ExpandPath))
{
if (property is QueryResultType.ItemsPropertySpec)
return string.Empty;
return property.LowerCaseName;
}
return string.Concat(parentNode.ExpandPath, ".", property.LowerCaseName);
}
public PropertyValueSerializerNode(
ISerializerNode parentNode, PropertySpec property)
{
if (parentNode == null)
throw new ArgumentNullException("parentNode");
if (property == null)
throw new ArgumentNullException("propertyMapping");
this.parentNode = parentNode;
this.property = property;
context = parentNode.Context;
}
public ItemValueSerializerNode(
object value, TypeSpec expectedBaseType, string expandPath, ISerializationContext context,
ISerializerNode parentNode, bool isRemoved = false)
{
this.value = value;
this.expectedBaseType = expectedBaseType;
this.expandPath = expandPath;
this.context = context;
this.parentNode = parentNode;
this.isRemoved = isRemoved;
}
public void Serialize(ISerializerNode node, Action <ISerializerNode> serializeNodeAction)
{
if (node.Value is IClientResource &&
!(node.Value is PostResourceBase) &&
!(node.Value is IDelta) &&
!node.IsRemoved)
{
node.SerializeAsReference = true;
}
serializeNodeAction(node);
}
protected SerializerNode(TypeSpec expectedBaseType,
string expandPath,
ISerializationContext context,
ISerializerNode parentNode,
bool isRemoved = false)
{
ExpectedBaseType = expectedBaseType;
ExpandPath = expandPath;
Context = context;
ParentNode = parentNode;
IsRemoved = isRemoved;
}
protected SerializerNode(TypeSpec expectedBaseType,
string expandPath,
ISerializationContext context,
ISerializerNode parentNode,
bool isRemoved = false)
{
ExpectedBaseType = expectedBaseType;
ExpandPath = expandPath;
Context = context;
ParentNode = parentNode;
IsRemoved = isRemoved;
}
private static string GetExpandPath(ISerializerNode parentNode, PropertySpec property)
{
if (string.IsNullOrEmpty(parentNode.ExpandPath))
{
if (property is QueryResultType.ItemsPropertySpec)
{
return(string.Empty);
}
return(property.LowerCaseName);
}
return(string.Concat(parentNode.ExpandPath, ".", property.LowerCaseName));
}
public PropertyValueSerializerNode(
ISerializerNode parentNode,
PropertySpec property)
: base(
property != null ? property.PropertyType : null, GetExpandPath(parentNode, property),
parentNode != null ? parentNode.Context : null, parentNode)
{
if (parentNode == null)
throw new ArgumentNullException(nameof(parentNode));
if (property == null)
throw new ArgumentNullException(nameof(property));
Property = property;
}
public void Serialize(ISerializerNode node, Action <ISerializerNode> nodeSerializerAction)
{
var isExpanded = (node.ExpectedBaseType != typeof(object) && node.ExpectedBaseType != null &&
node.ExpectedBaseType.IsAlwaysExpanded) ||
PathToBeExpanded(node.ExpandPath) ||
(node.ExpectedBaseType != null && node.ExpectedBaseType.IsCollection &&
node.Context.PathToBeExpanded(node.ExpandPath + "!")) ||
(GetPropertyExpandMode(node) != ExpandMode.Default) ||
(node.Value != null && node.ValueType != null && node.ValueType.IsAlwaysExpanded);
node.SerializeAsReference = !isExpanded;
nodeSerializerAction(node);
}
private void SerializeCollection(ISerializerNode node, Writer writer)
{
var jsonWriter = writer.JsonWriter;
if (node.SerializeAsReference)
{
jsonWriter.WriteStartObject();
jsonWriter.WritePropertyName("_ref");
jsonWriter.WriteValue(node.Uri);
jsonWriter.WriteEndObject();
}
else
{
jsonWriter.WriteStartArray();
TypeSpec baseElementType;
if (node.ExpectedBaseType != null && node.ExpectedBaseType.IsCollection)
{
baseElementType = node.ExpectedBaseType.ElementType;
}
else
{
baseElementType = node.Context.GetClassMapping(typeof(object));
}
var delta = node.Value as ICollectionDelta;
if (delta != null)
{
foreach (var item in delta.AddedItems.Concat(delta.ModifiedItems))
{
var itemNode = new ItemValueSerializerNode(item, baseElementType, node.ExpandPath, node.Context, node);
SerializeThroughContext(itemNode, writer);
}
foreach (var item in delta.RemovedItems)
{
var itemNode = new ItemValueSerializerNode(item, baseElementType, node.ExpandPath, node.Context, node, true);
SerializeThroughContext(itemNode, writer);
}
}
else
{
foreach (var item in (IEnumerable)node.Value)
{
var itemNode = new ItemValueSerializerNode(item, baseElementType, node.ExpandPath, node.Context, node);
SerializeThroughContext(itemNode, writer);
}
}
jsonWriter.WriteEndArray();
}
}
private void SerializeComplex(ISerializerNode node, Writer writer)
{
if (node.Value == null)
{
writer.JsonWriter.WriteNull();
}
else if (node.SerializeAsReference)
{
SerializeReference(node, writer);
}
else
{
SerializeExpanded(node, writer);
}
}
protected override void SerializeNode(ISerializerNode node, Writer writer)
{
try
{
if (this.loopDetector.Value++ > 300)
{
throw new InvalidOperationException("Deep recursion detected, trying to avoid stack overflow.");
}
SerializeNodeInner(node, writer);
}
finally
{
this.loopDetector.Value--;
}
}
private static void SerializeReference(ISerializerNode node, Writer writer)
{
var jsonWriter = writer.JsonWriter;
jsonWriter.WriteStartObject();
jsonWriter.WritePropertyName("_ref");
jsonWriter.WriteValue(node.Uri);
var valueType = node.ValueType;
if (node.ExpectedBaseType != valueType)
{
SerializeTypeProperty(jsonWriter, valueType);
}
jsonWriter.WriteEndObject();
}
public PropertyValueSerializerNode(
ISerializerNode parentNode,
PropertySpec property)
: base(
property != null ? property.PropertyType : null, GetExpandPath(parentNode, property),
parentNode != null ? parentNode.Context : null, parentNode)
{
if (parentNode == null)
{
throw new ArgumentNullException(nameof(parentNode));
}
if (property == null)
{
throw new ArgumentNullException(nameof(property));
}
Property = property;
}
private ExpandMode GetPropertyExpandMode(ISerializerNode node)
{
if (node.ExpectedBaseType.IsCollection && node.ExpectedBaseType.ElementType.IsAlwaysExpanded)
{
return(ExpandMode.Full);
}
if (node.ParentNode != null && node.ParentNode.ValueType.IsCollection &&
GetPropertyExpandMode(node.ParentNode) == ExpandMode.Full)
{
return(ExpandMode.Full);
}
var propNode = node as PropertyValueSerializerNode;
if (propNode == null)
{
return(ExpandMode.Default);
}
return(propNode.Property.ExpandMode);
}
private void SerializeDictionary(ISerializerNode node, Writer writer)
{
var dictType = node.ExpectedBaseType as DictionaryTypeSpec ?? node.ValueType as DictionaryTypeSpec;
if (dictType == null)
{
throw new PomonaSerializationException("Unable to serialize dictionary of typespec " + node.ExpectedBaseType);
}
var keyMappedType = dictType.KeyType.Type;
if (keyMappedType != typeof(string))
{
throw new NotImplementedException(
"Does not support serialization of dictionaries where key is not string.");
}
var valueMappedType = dictType.ValueType.Type;
serializeDictionaryGenericMethod
.MakeGenericMethod(valueMappedType)
.Invoke(this, new object[] { node, writer, dictType });
}
private static void SerializeValue(ISerializerNode node, Writer writer)
{
var value = node.Value;
var boxValueWithTypeSpec = node.ExpectedBaseType != null &&
node.ExpectedBaseType.Type == typeof(object) &&
ValueBoxingRequired(node.Value.GetType());
if (boxValueWithTypeSpec)
{
writer.JsonWriter.WriteStartObject();
SerializeTypeProperty(writer.JsonWriter, node.ValueType);
writer.JsonWriter.WritePropertyName("value");
}
var jsonConverter = node.ValueType.GetCustomJsonConverter();
if (jsonConverter == null && node.ValueType is EnumTypeSpec)
{
jsonConverter = new StringEnumConverter();
}
if (jsonConverter != null)
{
jsonConverter.WriteJson(writer.JsonWriter, value, null);
}
else
{
writer.JsonWriter.WriteValue(value);
}
if (boxValueWithTypeSpec)
{
writer.JsonWriter.WriteEndObject();
}
}
protected void SerializeThroughContext(ISerializerNode node, TWriter writer)
{
node.Context.Serialize(node, n => SerializeNode(n, writer));
}
private void SerializeExpanded(ISerializerNode node, Writer writer)
{
var jsonWriter = writer.JsonWriter;
var serializingDelta = node.Value is IDelta;
jsonWriter.WriteStartObject();
if (node.ValueType is ResourceType && node.Uri != null)
{
jsonWriter.WritePropertyName("_uri");
jsonWriter.WriteValue(node.Uri);
}
if (node.ExpectedBaseType != node.ValueType && !node.ValueType.IsAnonymous() && !serializingDelta && !node.IsRemoved)
{
SerializeTypeProperty(jsonWriter, node.ValueType);
}
if (node.IsRemoved || (serializingDelta && node.ParentNode != null && node.ParentNode.ValueType.IsCollection))
{
var primaryId = node.ValueType.Maybe().OfType <StructuredType>().Select(x => x.PrimaryId).OrDefault();
if (primaryId == null)
{
throw new PomonaSerializationException("When we are removing complex object a primary id is required.");
}
jsonWriter.WritePropertyName((node.IsRemoved ? "-@" : "*@") + primaryId.JsonName);
jsonWriter.WriteValue(primaryId.GetValue(node.Value, node.Context));
if (node.IsRemoved)
{
jsonWriter.WriteEndObject();
return;
}
}
PomonaJsonSerializerTypeEntry cacheTypeEntry;
IEnumerable <PropertySpec> propertiesToSerialize = null;
var pomonaSerializable = node.Value as IPomonaSerializable;
if (pomonaSerializable == null && TryGetTypeEntry(node.ValueType, out cacheTypeEntry))
{
cacheTypeEntry.WritePropertiesFunc(jsonWriter, node.Value, node.Context);
propertiesToSerialize = cacheTypeEntry.ManuallyWrittenProperties;
}
propertiesToSerialize = propertiesToSerialize ?? node.ValueType.Properties;
propertiesToSerialize = propertiesToSerialize.Where(x => x.IsSerialized);
if (pomonaSerializable != null)
{
propertiesToSerialize = propertiesToSerialize.Where(x => pomonaSerializable.PropertyIsSerialized(x.Name));
}
foreach (var prop in propertiesToSerialize)
{
var propNode = new PropertyValueSerializerNode(node, prop);
if (serializingDelta && propNode.ValueType.SerializationMode == TypeSerializationMode.Structured &&
!(propNode.Value is IDelta))
{
jsonWriter.WritePropertyName("!" + prop.JsonName);
}
else if (serializingDelta && propNode.ValueType.SerializationMode == TypeSerializationMode.Array &&
propNode.Value.Maybe().OfType <ICollectionDelta>().Select(x => x.Cleared).OrDefault(true))
{
jsonWriter.WritePropertyName("!" + prop.JsonName);
}
else
{
jsonWriter.WritePropertyName(prop.JsonName);
}
SerializeThroughContext(propNode, writer);
}
jsonWriter.WriteEndObject();
}
protected abstract void SerializeNode(ISerializerNode node, TWriter writer);
