public object ResetResource(object resource)
{
CustomUtils.CheckArgumentNotNull(resource, "resource");
CustomEntityType entityType;
if (!MetadataWorkspace.TryGetEntityType(resource.GetType(), out entityType))
{
throw new NotImplementedException(String.Format(
"ResetResource() is implemented only for entity types. " +
"The given object '{0}' is not a valid entity."
));
}
foreach (var property in entityType.Propeties)
{
if (!property.IsReadOnly && !property.IsPrimaryKey && null == property.ForeignKeyConstraint)
{
object defaultValue;
if (property.IsNullable)
{
defaultValue = null;
}
else
{
defaultValue = Activator.CreateInstance(property.ClrType);
}
property.SetValue(resource, defaultValue);
}
}
return(resource);
}
public object ResolveResource(object targetResource)
{
CustomUtils.CheckArgumentNotNull(targetResource, "targetResource");
CheckEntityObjectAttached(targetResource);
return(targetResource);
}
public object CreateResource(string containerName, string fullTypeName)
{
CustomUtils.CheckArgumentNotNull(fullTypeName, "fullTypeName");
Type entityOrComplexType = Type.GetType(fullTypeName);
object obj = Activator.CreateInstance(entityOrComplexType);
if (IsComplexType(entityOrComplexType))
{
if (null != containerName)
{
throw new ArgumentException(String.Format(
"Parameter 'containerName' must be null when CreateResource is called for " +
"complex type objects. Container name: '{0}'. Complex type: '{1}'.",
containerName, entityOrComplexType.Name
));
}
return(obj);
}
else
{
CustomUtils.CheckArgumentNotNull(containerName, "containerName");
AddObject(containerName, obj); // will throw if the object is not a valid entity
Debug.Assert(IsAttached(obj));
}
return(obj);
}
public void DeleteResource(object targetResource)
{
CustomUtils.CheckArgumentNotNull(targetResource, "targetResource");
CheckEntityObjectAttached(targetResource);
DeleteObject(targetResource);
}
public void Remove(object entityObject)
{
CustomUtils.CheckArgumentNotNull(entityObject, "entityObject");
CustomEntityType entityType = CheckTypeCompatibility(entityObject);
RemoveInternal(entityObject);
}
public void SetReference(object targetResource, string propertyName, object propertyValue)
{
CustomUtils.CheckArgumentNotNull(targetResource, "targetResource");
CustomUtils.CheckArgumentNotNull(propertyName, "propertyName");
GetEntityMember(targetResource, propertyName).SetValue(targetResource, propertyValue);
}
public void Update(object entityObject)
{
CustomUtils.CheckArgumentNotNull(entityObject, "entityObject");
CustomEntityType entityType = CheckTypeCompatibility(entityObject);
UpdateInternal(entityObject);
RunPostUpdateStoreTriggers(entityObject, entityType);
}
public FileBasedCustomEntitySetContainer(
CustomMetadataWorkspace metadataWorkspace,
string backendFileName
)
: base(metadataWorkspace)
{
CustomUtils.CheckArgumentNotNull(backendFileName, "backendFileName");
_backendFileName = backendFileName;
}
public IQueryable CreateQuery(string entitySetName)
{
CustomUtils.CheckArgumentNotNull(entitySetName, "entitySetName");
CustomEntitySet entitySet = GetEntitySetByName(entitySetName);
Debug.Assert(null != entitySet);
Debug.Assert(entitySet is IEnumerable);
return(((IEnumerable)entitySet).AsQueryable());
}
public CustomEntitySetContainer(
CustomMetadataWorkspace metadataWorkspace
)
{
CustomUtils.CheckArgumentNotNull(metadataWorkspace, "metadataWorkspace");
_metadata = metadataWorkspace;
foreach (CustomEntitySetType entitySetType in MetadataWorkspace.EntitySets)
{
CreateQuery(entitySetType.Name);
}
}
//
// WARNING these serialization methods are quick hack for Astoria Test Framework to let it
// read in-memory data on the server side from the test client
//
public virtual void WriteDataObjectsUnsafe(Stream stream)
{
CustomUtils.CheckArgumentNotNull(stream, "stream");
if (stream.CanSeek)
{
stream.Seek(0, SeekOrigin.Begin);
}
var entitySetsToSerialize = GetAllEntitySets().ToDictionary(es => es.EntitySetType.Name);
GetDataContractSerializer().WriteObject(stream, entitySetsToSerialize);
}
public object GetValue(object targetResource, string propertyName)
{
CustomUtils.CheckArgumentNotNull(targetResource, "targetResource");
CustomUtils.CheckArgumentNotNull(propertyName, "propertyName");
var property = GetProperty(targetResource.GetType(), propertyName);
if (null == property.GetGetMethod() || !property.CanRead)
{
// we don't generate properties without getter; but just in case...
throw new InvalidOperationException(String.Format(
"Property '{0}' of resource type '{1}' is not accessible.",
propertyName,
targetResource.GetType().Name
));
}
return(property.GetValue(targetResource, null));
}
public object GetResource(IQueryable query, string fullTypeName)
{
CustomUtils.CheckArgumentNotNull(query, "query");
object resource = FindResourceByQuery(query);
if (
null != resource &&
null != fullTypeName &&
resource.GetType().FullName != fullTypeName)
{
throw new ArgumentException(String.Format(
"Invalid URI specified. ExpectedType: '{0}'. ActualType: '{1}'.",
fullTypeName, resource.GetType().FullName
));
}
return(resource);
}
public void RemoveReferenceFromCollection(object targetResource, string propertyName, object resourceToBeRemoved)
{
CustomUtils.CheckArgumentNotNull(targetResource, "targetResource");
CustomUtils.CheckArgumentNotNull(propertyName, "propertyName");
object objCollection = GetObjectCollection(targetResource, propertyName);
if (objCollection is CustomObjectCollectionBase)
{
// the entity object was already added to the context
// and the underlying CLR collection was wrapped into our internal
// tracking collection
((CustomObjectCollectionBase)objCollection).Remove(resourceToBeRemoved);
}
else
{
MethodInfo addMethod = objCollection.GetType().GetMethod("Remove");
Debug.Assert(null != addMethod);
addMethod.Invoke(targetResource, new object[] { resourceToBeRemoved });
}
}
public IQueryable <EntityObjectType> CreateQueryOfT <EntityObjectType>(string entitySetName)
{
CustomUtils.CheckArgumentNotNull(entitySetName, "entitySetName");
CustomEntitySetType entitySetType = _metadata.GetEntitySet(entitySetName);
CustomEntityType entityType = _metadata.GetEntityType(typeof(EntityObjectType));
if (!entitySetType.BaseElementType.IsAssignableFrom(entityType))
{
throw new InvalidOperationException(String.Format(
"The base element type '{0}' of the entity set '{1}' is not compatible with " +
"the queried entity type '{2}'.",
entitySetType.BaseElementType, entitySetName, entityType
));
}
CustomEntitySet entitySet = GetEntitySetByName(entitySetName);
Debug.Assert(null != entitySet);
Debug.Assert(typeof(IEnumerable <EntityObjectType>).IsAssignableFrom(entitySet.GetType()));
return(((IEnumerable <EntityObjectType>)entitySet).AsQueryable());
}
protected internal virtual void ReloadDataObjectsUnsafe(Stream stream)
{
CheckNotReadOnly();
CustomUtils.CheckArgumentNotNull(stream, "stream");
Debug.Assert(null != _metadata);
if (stream.CanSeek)
{
stream.Seek(0, SeekOrigin.Begin);
}
DataContractSerializer dataContractSerializer = GetDataContractSerializer();
var deserializedEntitySets = (IDictionary <string, CustomEntitySet>)dataContractSerializer.ReadObject(stream);
_entitySetMap.Clear();
foreach (var entitySetEntry in deserializedEntitySets)
{
var entitySetType = MetadataWorkspace.EntitySets
.Where(et => et.Name == entitySetEntry.Key)
.Select(et => et)
.SingleOrDefault();
Debug.Assert(null != entitySetType);
// the metadata information for entity sets was not serialized, so we need
// to fix it up immediately after the entity set is deserialized
var entitySet = entitySetEntry.Value;
entitySet.MetadataWorkspace = MetadataWorkspace;
entitySet.EntitySetType = entitySetType;
entitySet.ParentContainer = this;
_entitySetMap.Add(entitySetType.Name, entitySet);
}
_defaultDataCreated = true;
}
public void SetValue(object targetResource, string propertyName, object propertyValue)
{
CustomUtils.CheckArgumentNotNull(targetResource, "targetResource");
CustomUtils.CheckArgumentNotNull(propertyName, "propertyName");
var property = GetProperty(targetResource.GetType(), propertyName);
if (IsComplexType(property.PropertyType))
{
// we treat complex types as value types, an inherit part of an entity type,
// they cannot be null, have no separate metadata, always exist and
// by design complex type properties have no setters
//
// we can relax these constraints later, but now change detection
// logic in custom object context depends on it
if (null == propertyValue)
{
throw new ArgumentNullException(String.Format(
"Value for complex type property '{0}' cannot be null.",
propertyName
));
}
object currentComplexValue = property.GetValue(targetResource, null);
CopyComplexTypeObject(currentComplexValue, propertyValue);
return;
}
CustomMemberType entityMember;
if (TryGetEntityMember(targetResource, propertyName, out entityMember))
{
if (entityMember is CustomNavigationPropertyType)
{
throw new InvalidOperationException(String.Format(
"Given property '{0}' of entity object '{1}' is a navigation " +
"property of type '{2}'. SetValue() is not supposed for " +
"changing navigation properties. Use SetReference() or " +
"AddReferenceToCollection() methods.",
propertyName, targetResource, entityMember.ClrType
));
}
Debug.Assert(entityMember is CustomPropertyType);
CustomPropertyType entityProperty = (CustomPropertyType)entityMember;
if (null != entityProperty.ForeignKeyConstraint)
{
// attempt to set a foreign key property is incorrect in the world of our custom
// data model because there is no setter for such properties at all and the getter
// simply returns value of a primary key property from the primary end entity using
// corresponding navigation property
// get
// {
// if(null == _primaryEnd)
// {
// return default(int);
// }
// return _primaryEnd.Id;
// }
//
// silently return from SetValue without error reporting for compatibility
// with existing tests
return;
}
if (entityProperty.IsPrimaryKey)
{
// all our primary keys are store generated and have internal setter, but
// test framework for Astoria suppose to be able to set primary keys and
// then use same values to query the object; we allow it here to be
// compatible with the existing tests; for objects with initialized primary keys
// the custom object context will actually queue an update operation, but not insert
entityProperty.SetValue(targetResource, propertyValue);
return;
}
}
else
{
Debug.Assert(IsComplexType(targetResource.GetType()));
}
if (null == property.GetSetMethod() || !property.CanWrite)
{
throw new InvalidOperationException(String.Format(
"Property '{0}' of resource type '{1}' is not writable.",
propertyName,
targetResource.GetType().Name
));
}
property.SetValue(targetResource, propertyValue, null);
}
