public static IEntity CreateEntityInContainedNavigationProperty(
this INavigationProperty navigationProperty,
IBindableModelContext context,
IEntity parentEntity,
IDictionary <string, IDependency> dependencies)
{
if (!navigationProperty.IsContained())
{
throw new ArgumentException("Navigation property must be contained.", nameof(navigationProperty));
}
if (navigationProperty.IsCollection())
{
IContainedCollectionNavigationPropertyBinding binding;
if (!context.TryGetBinding(navigationProperty, out binding))
{
throw new ArgumentException("The specified navigation property does not support the expected binding.", nameof(navigationProperty));
}
return(binding.CreateAndAdd(parentEntity, dependencies));
}
else
{
IContainedNavigationPropertyBinding binding;
if (!context.TryGetBinding(navigationProperty, out binding))
{
throw new ArgumentException("The specified navigation property does not support the expected binding.", nameof(navigationProperty));
}
return(binding.CreateAndSet(parentEntity, dependencies));
}
}
public void SetUncontainedNavigationProperty(
IBindableModelContext context,
IEntity targetEntity,
INavigationProperty navigationProperty,
IEnumerable <IEntity> entities)
{
ThrowIfContained(navigationProperty);
if (navigationProperty.IsCollection())
{
IUncontainedCollectionNavigationPropertyBinding binding;
if (context.TryGetBinding(navigationProperty, out binding))
{
// TODO: think about having an AddRange method for better performance
entities.ForEach(entity => binding.Add(targetEntity, entity));
return;
}
}
else
{
IUncontainedNavigationPropertyBinding binding;
if (context.TryGetBinding(navigationProperty, out binding))
{
binding.Set(targetEntity, entities.Single());
return;
}
}
throw new ArgumentException("The specified navigation property does not support the expected binding.", nameof(navigationProperty));
}
public bool TryGetLinkedOrInlineEntities(
IBindableModelContext context,
ODataEntityDto oDataEntity,
INavigationProperty navigationProperty,
IEntitySet navigationRoot,
out IEnumerable <IEntity> entities)
{
if (navigationProperty.IsContained())
{
throw new ArgumentException("Navigation property must be uncontained.", nameof(navigationProperty));
}
// parse reference links as well as inline entities (both can be included at the same time)
var resultingEntities = new List <IEntity>();
var success = this.TryParseReferencedEntities(context, oDataEntity, navigationProperty, resultingEntities)
| this.TryParseAndCreateInlineEntities(context, oDataEntity, navigationProperty, navigationRoot, resultingEntities);
if (success)
{
entities = resultingEntities;
return(true);
}
entities = null;
return(false);
}
public void RemoveFromUncontainedNavigationProperty(
IBindableModelContext context,
IEntity targetEntity,
INavigationProperty navigationProperty,
IEnumerable <IEntity> entitiesToRemove)
{
ThrowIfContained(navigationProperty);
if (navigationProperty.IsCollection())
{
IUncontainedCollectionNavigationPropertyBinding binding;
if (context.TryGetBinding(navigationProperty, out binding))
{
entitiesToRemove.ForEach(entityToRemove => binding.Remove(targetEntity, entityToRemove));
return;
}
}
else
{
IUncontainedNavigationPropertyBinding binding;
if (context.TryGetBinding(navigationProperty, out binding))
{
binding.Clear(targetEntity);
return;
}
}
throw new ArgumentException("The specified navigation property does not support the expected binding.", nameof(navigationProperty));
}
protected override bool TryHandleNavigationProperty(
IBindableModelContext context,
IEntity targetEntity,
ODataEntityDto oDataEntity,
INavigationProperty navigationProperty,
IEntitySet navigationRoot)
{
if (navigationProperty.IsContained())
{
IEnumerable <ODataEntityDto> inlineODataEntities;
if (!oDataEntity.TryGetInlineODataEntities(navigationProperty.Name, out inlineODataEntities))
{
return(false);
}
this.CreateInContainedNavigationProperty(context, navigationProperty, navigationRoot, targetEntity, inlineODataEntities);
return(true);
}
IEnumerable <IEntity> entities;
if (this.navigationPropertyParser.TryGetLinkedOrInlineEntities(context, oDataEntity, navigationProperty, navigationRoot, out entities))
{
this.navigationPropertyBinder.SetUncontainedNavigationProperty(context, targetEntity, navigationProperty, entities);
return(true);
}
return(false);
}
public IEntity CreateInEntitySet(IBindableModelContext context, IEntitySet entitySet, ODataEntityDto oDataEntity)
{
var dependencies = this.dependencyResolver.ResolveDependencies(context, entitySet, entitySet, oDataEntity);
var createdEntity = entitySet.CreateEntityInEntitySet(context, dependencies);
this.SetPropertyValues(context, entitySet, createdEntity, oDataEntity, dependencies.Keys);
return(createdEntity);
}
protected void SetPropertyValues(
IBindableModelContext context,
IEntitySet navigationRoot,
IEntity targetEntity,
ODataEntityDto oDataEntity)
{
this.SetPropertyValues(context, navigationRoot, targetEntity, oDataEntity, Enumerable.Empty <string>());
}
public IEnumerable <IEntity> ReadEntitiesFromPath(IBindableModelContext modelContext, IEnumerable <ODataPathSegment> oDataPath)
{
if (!oDataPath.Any())
{
throw new ArgumentException("The path must not be empty.", nameof(oDataPath));
}
var readingHandler = new EntityReadingPathSegmentHandler(modelContext);
readingHandler.HandlePath(oDataPath);
return(readingHandler.GetResultingEntities());
}
public DefaultSelectItemHandler(
IEntityReader entityReader,
IBindableModelContext modelContext,
IEntity sourceEntity,
IODataEntityDtoBuilder resultingDtoBuilder,
Action <IODataEntityDtoBuilder, IEntity> defaultChildDtoInitializer)
{
this.entityReader = entityReader;
this.modelContext = modelContext;
this.sourceEntity = sourceEntity;
this.resultingDtoBuilder = resultingDtoBuilder;
this.defaultChildDtoInitializer = defaultChildDtoInitializer;
}
public IEntity CreateInContainedNavigationProperty(
IBindableModelContext context,
INavigationProperty navigationProperty,
IEntitySet navigationRoot,
IEntity parentEntity,
ODataEntityDto oDataEntity)
{
var dependencies = this.dependencyResolver.ResolveDependencies(context, navigationProperty, navigationRoot, oDataEntity);
var createdEntity = navigationProperty.CreateEntityInContainedNavigationProperty(context, parentEntity, dependencies);
this.SetPropertyValues(context, navigationRoot, createdEntity, oDataEntity, dependencies.Keys);
return(createdEntity);
}
public static IEntity CreateEntityInEntitySet(
this IEntitySet entitySet,
IBindableModelContext context,
IDictionary <string, IDependency> dependencies)
{
IEntitySetBinding binding;
if (!context.TryGetBinding(entitySet, out binding))
{
throw new ArgumentException("The specified entity set does not support the expected binding.", nameof(entitySet));
}
return(binding.CreateAndAdd(dependencies));
}
public IEnumerable <IEntity> CreateInContainedNavigationProperty(
IBindableModelContext context,
INavigationProperty navigationProperty,
IEntitySet navigationRoot,
IEntity parentEntity,
IEnumerable <ODataEntityDto> oDataEntities)
{
var createdEntities = new List <IEntity>();
foreach (var oDataEntity in oDataEntities)
{
createdEntities.Add(this.CreateInContainedNavigationProperty(context, navigationProperty, navigationRoot, parentEntity, oDataEntity));
}
return(createdEntities);
}
private bool TryParseReferencedEntities(
IBindableModelContext context,
ODataEntityDto oDataEntity,
INavigationProperty navigationProperty,
List <IEntity> resultingEntities)
{
IEnumerable <IEntity> referencedEntities;
if (this.referenceParser.TryParseReferencedEntities(context, navigationProperty, oDataEntity, out referencedEntities))
{
resultingEntities.AddRange(referencedEntities);
return(true);
}
return(false);
}
public IEnumerable <IEntity> CreateInUncontainedNavigationProperty(
IBindableModelContext context,
INavigationProperty navigationProperty,
IEntitySet navigationRoot,
IEnumerable <ODataEntityDto> oDataEntities)
{
IEntitySet targetEntitySet;
if (navigationProperty.TryGetNavigationPropertyTarget(context, navigationRoot, out targetEntitySet) &&
targetEntitySet.SupportedOperations.HasFlag(Operation.Post))
{
return(oDataEntities.Select(oDataEntity => this.CreateInEntitySet(context, targetEntitySet, oDataEntity)).ToArray());
}
throw new InvalidOperationException(
"No valid navigation target found for property " + navigationProperty.Name + " in the context of " + navigationRoot.Name + ".");
}
private IEnumerable <ODataEntityDto> SerializeEntities(
IBindableModelContext context,
IEnumerable <IEntity> entities,
IEntityType entityType,
SelectExpandClause selectExpandClause)
{
foreach (var entity in entities)
{
var dtoBuilder = this.dtoBuilderFactory.Create(entityType);
if (selectExpandClause == null || selectExpandClause.AllSelected)
{
SelectAllProperties(dtoBuilder, entity);
}
else
{
var selectItemHandler = new DefaultSelectItemHandler(this.entityReader, context, entity, dtoBuilder, SelectAllProperties);
selectItemHandler.HandleAll(selectExpandClause.SelectedItems);
}
yield return(dtoBuilder.DtoUnderConstruction);
}
}
public bool TryGetLinkedEntities(
IBindableModelContext context,
ODataEntityDto oDataEntity,
INavigationProperty navigationProperty,
out IEnumerable <IEntity> entities)
{
if (navigationProperty.IsContained())
{
throw new ArgumentException("Navigation property must be uncontained.", nameof(navigationProperty));
}
var resultingEntities = new List <IEntity>();
if (this.TryParseReferencedEntities(context, oDataEntity, navigationProperty, resultingEntities))
{
entities = resultingEntities;
return(true);
}
entities = null;
return(false);
}
protected override bool TryHandleNavigationProperty(
IBindableModelContext context,
IEntity targetEntity,
ODataEntityDto oDataEntity,
INavigationProperty navigationProperty,
IEntitySet navigationRoot)
{
if (navigationProperty.IsContained())
{
throw new InvalidOperationException("Only uncontained navigation properties can be processed while updating the parent.");
}
IEnumerable <IEntity> entities;
if (this.navigationPropertyParser.TryGetLinkedEntities(context, oDataEntity, navigationProperty, out entities))
{
this.navigationPropertyBinder.SetUncontainedNavigationProperty(context, targetEntity, navigationProperty, entities);
return(true);
}
return(false);
}
public IDictionary <string, IDependency> ResolveDependencies(
IBindableModelContext context,
INavigatable navigationTarget,
IEntitySet navigationRoot,
ODataEntityDto oDataEntity)
{
//var changedPropertyNames = oDataEntity.GetChangedPropertyNames();
var changedPropertyNames = oDataEntity.Entry.Properties.Select(p => p.Name).Concat(oDataEntity.NavigationProperties.Select(np => np.Name)).ToArray(); // TODO
var dependencies = new Dictionary <string, IDependency>();
foreach (var declaration in context.GetDependencies(navigationTarget))
{
IDependency dependency;
var property = declaration.DependableElement as IStructuralProperty;
if (property != null && changedPropertyNames.Contains(property.EdmPropertyName) &&
TryGetPropertyDependency(property, oDataEntity, out dependency))
{
dependencies[property.EdmPropertyName] = dependency;
continue;
}
var navigationProperty = declaration.DependableElement as INavigationProperty;
if (navigationProperty != null && changedPropertyNames.Contains(navigationProperty.Name) &&
this.TryGetUncontainedNavigationPropertyDependency(context, navigationProperty, navigationRoot, oDataEntity, out dependency))
{
dependencies[navigationProperty.Name] = dependency;
continue;
}
if (!declaration.IsOptional)
{
throw new NotSupportedException("The dependency is unknown and could not be resolved.");
}
}
return(dependencies);
}
private bool TryParseAndCreateInlineEntities(
IBindableModelContext context,
ODataEntityDto oDataEntity,
INavigationProperty navigationProperty,
IEntitySet navigationRoot,
List <IEntity> resultingEntities)
{
IEnumerable <ODataEntityDto> inlineODataEntities;
if (oDataEntity.TryGetInlineODataEntities(navigationProperty.Name, out inlineODataEntities))
{
if (this.uncontainedEntitiesFactory == null)
{
throw new InvalidOperationException("Cannot create uncontained entities. Factory hasn't been set.");
}
var createdEntities = this.uncontainedEntitiesFactory(context, navigationProperty, navigationRoot, inlineODataEntities);
resultingEntities.AddRange(createdEntities);
return(true);
}
return(false);
}
private bool TryGetUncontainedNavigationPropertyDependency(
IBindableModelContext context,
INavigationProperty navigationProperty,
IEntitySet navigationRoot,
ODataEntityDto oDataEntity,
out IDependency dependency)
{
if (navigationProperty.IsContained())
{
throw new InvalidOperationException("A contained navigation property cannot be included as a dependency.");
}
IEnumerable <IEntity> entities;
if (this.navigationPropertyParser.TryGetLinkedOrInlineEntities(context, oDataEntity, navigationProperty, navigationRoot, out entities))
{
dependency = new NavigationPropertyDependency(navigationProperty, entities);
return(true);
}
dependency = null;
return(false);
}
protected void SetPropertyValues(
IBindableModelContext context,
IEntitySet navigationRoot,
IEntity targetEntity,
ODataEntityDto oDataEntity,
IEnumerable <string> propertiesToExclude)
{
var entityType = oDataEntity.GetEntityType(context);
var relevantProperties = oDataEntity.Entry.Properties.Where(p => !propertiesToExclude.Contains(p.Name));
foreach (var property in relevantProperties)
{
IStructuralProperty structuralProperty;
if (entityType.TryGetStructuralProperty(property.Name, out structuralProperty))
{
if (!this.TryHandleStructuralProperty(targetEntity, oDataEntity, structuralProperty))
{
throw new InvalidOperationException("The included structural property \"" + property.Name + "\" could not be processed.");
}
continue;
}
INavigationProperty navigationProperty;
if (entityType.TryGetNavigationProperty(property.Name, out navigationProperty))
{
if (!this.TryHandleNavigationProperty(context, targetEntity, oDataEntity, navigationProperty, navigationRoot))
{
throw new InvalidOperationException("The included navigation property \"" + property.Name + "\" could not be processed.");
}
continue;
}
throw new NotSupportedException("The included property \"" + property.Name + "\" is unsupported.");
}
}
public bool TryParseReferencedEntities(
IBindableModelContext context,
INavigationProperty navigationProperty,
ODataEntityDto oDataEntity,
out IEnumerable <IEntity> entities)
{
IEnumerable <ODataPath> referenceLinks;
if (!TryGetEntityReferenceLinks(oDataEntity, navigationProperty.Name, out referenceLinks))
{
entities = null;
return(false);
}
var readEntities = new List <IEntity>();
foreach (var referenceLink in referenceLinks)
{
readEntities.AddRange(this.entityReader.ReadEntitiesFromPath(context, referenceLink));
}
entities = readEntities;
return(true);
}
public void UpdateEntity(IBindableModelContext context, IEntitySet navigationRoot, IEntity targetEntity, ODataEntityDto oDataEntity)
{
this.SetPropertyValues(context, navigationRoot, targetEntity, oDataEntity);
}
public EntityReadingPathSegmentHandler(IBindableModelContext modelContext)
{
this.modelContext = modelContext;
this.readContext = new ReadContext(modelContext);
}
public ReadContext(IBindableModelContext modelContext)
{
this.result = EmptyResult;
this.Model = modelContext;
}
public ReadContext(IEnumerable <IEntity> result, IBindableModelContext modelContext)
{
this.Model = modelContext;
this.result = result;
}
public EntityReadingPathSegmentHandler(IBindableModelContext modelContext, IEntity existingEntity)
{
this.modelContext = modelContext;
this.readContext = new ReadContext(existingEntity.Enumerate(), modelContext);
}
protected abstract bool TryHandleNavigationProperty(
IBindableModelContext context,
IEntity targetEntity,
ODataEntityDto oDataEntity,
INavigationProperty navigationProperty,
IEntitySet navigationRoot);
