/// <summary>
/// Initializes the EPM annotation with EPM information from the specified type.
/// </summary>
/// <param name="definingEntityType">Entity type to use the EPM infromation from.</param>
/// <param name="affectedEntityType">Entity type for this the EPM information is being built.</param>
internal void BuildEpmForType(IEdmEntityType definingEntityType, IEdmEntityType affectedEntityType)
{
DebugUtils.CheckNoExternalCallers();
Debug.Assert(definingEntityType != null, "definingEntityType != null");
Debug.Assert(affectedEntityType != null, "affectedEntityType != null");
if (definingEntityType.BaseType != null)
{
this.BuildEpmForType(definingEntityType.BaseEntityType(), affectedEntityType);
}
ODataEntityPropertyMappingCollection mappingsForType = this.model.GetEntityPropertyMappings(definingEntityType);
if (mappingsForType == null)
{
return;
}
foreach (EntityPropertyMappingAttribute mapping in mappingsForType)
{
this.epmSourceTree.Add(new EntityPropertyMappingInfo(mapping, definingEntityType, affectedEntityType));
if (definingEntityType == affectedEntityType)
{
if (!PropertyExistsOnType(affectedEntityType, mapping))
{
this.MappingsForInheritedProperties.Add(mapping);
this.MappingsForDeclaredProperties.Remove(mapping);
}
}
}
}
internal bool IsDirty(ODataEntityPropertyMappingCollection propertyMappings)
{
if ((this.mappings == null) && (propertyMappings == null))
{
return(false);
}
return(!object.ReferenceEquals(this.mappings, propertyMappings) || (this.mappings.Count != propertyMappings.Count));
}
internal ODataEntityPropertyMappingCache(ODataEntityPropertyMappingCollection mappings, IEdmModel model, int totalMappingCount)
{
this.mappings = mappings;
this.model = model;
this.totalMappingCount = totalMappingCount;
this.mappingsForInheritedProperties = new List <EntityPropertyMappingAttribute>();
this.mappingsForDeclaredProperties = (mappings == null) ? new List <EntityPropertyMappingAttribute>() : new List <EntityPropertyMappingAttribute>(mappings);
this.epmTargetTree = new Microsoft.Data.OData.Metadata.EpmTargetTree();
this.epmSourceTree = new Microsoft.Data.OData.Metadata.EpmSourceTree(this.epmTargetTree);
}
private static ODataEntityPropertyMappingCache EnsureEpmCacheInternal(IEdmModel model, IEdmEntityType entityType, int maxMappingCount, out bool cacheModified)
{
cacheModified = false;
if (entityType == null)
{
return(null);
}
IEdmEntityType type = entityType.BaseEntityType();
ODataEntityPropertyMappingCache baseCache = null;
if (type != null)
{
baseCache = EnsureEpmCacheInternal(model, type, maxMappingCount, out cacheModified);
}
ODataEntityPropertyMappingCache epmCache = model.GetEpmCache(entityType);
if (model.HasOwnOrInheritedEpm(entityType))
{
ODataEntityPropertyMappingCollection entityPropertyMappings = model.GetEntityPropertyMappings(entityType);
if (!(((epmCache == null) || cacheModified) || epmCache.IsDirty(entityPropertyMappings)))
{
return(epmCache);
}
cacheModified = true;
int totalMappingCount = ValidationUtils.ValidateTotalEntityPropertyMappingCount(baseCache, entityPropertyMappings, maxMappingCount);
epmCache = new ODataEntityPropertyMappingCache(entityPropertyMappings, model, totalMappingCount);
try
{
epmCache.BuildEpmForType(entityType, entityType);
epmCache.EpmSourceTree.Validate(entityType);
model.SetAnnotationValue <ODataEntityPropertyMappingCache>(entityType, epmCache);
return(epmCache);
}
catch
{
model.RemoveEpmCache(entityType);
throw;
}
}
if (epmCache != null)
{
cacheModified = true;
model.RemoveEpmCache(entityType);
}
return(epmCache);
}
private static void LoadEpmAnnotations(IEdmModel model, IEdmEntityType entityType)
{
string typeName = entityType.ODataFullName();
ODataEntityPropertyMappingCollection mappings = new ODataEntityPropertyMappingCollection();
model.LoadEpmAnnotations(entityType, mappings, typeName, null);
IEnumerable <IEdmProperty> declaredProperties = entityType.DeclaredProperties;
if (declaredProperties != null)
{
foreach (IEdmProperty property in declaredProperties)
{
model.LoadEpmAnnotations(property, mappings, typeName, property);
}
}
model.SetAnnotationValue <ODataEntityPropertyMappingCollection>(entityType, mappings);
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="mappings">The EPM mappings to create the cache for.</param>
/// <param name="model">The EDM model.</param>
/// <param name="totalMappingCount">The total number of entity property mappings
/// for the entity type that this cache is created for (on the type itself and all its base types).</param>
internal ODataEntityPropertyMappingCache(ODataEntityPropertyMappingCollection mappings, IEdmModel model, int totalMappingCount)
{
DebugUtils.CheckNoExternalCallers();
Debug.Assert(model.IsUserModel(), "model.IsUserModel()");
this.mappings = mappings;
this.model = model;
this.totalMappingCount = totalMappingCount;
// Note that we new up everything here eagerly because we will only create the EPM annotation for types
// for which we know for sure that they have EPM and thus we will need all of these anyway.
this.mappingsForInheritedProperties = new List <EntityPropertyMappingAttribute>();
this.mappingsForDeclaredProperties = mappings == null
? new List <EntityPropertyMappingAttribute>()
: new List <EntityPropertyMappingAttribute>(mappings);
this.epmTargetTree = new EpmTargetTree();
this.epmSourceTree = new EpmSourceTree(this.epmTargetTree);
}
/// <summary>
/// Checks whether the current cache is dirty with respect to the <paramref name="propertyMappings"/>.
/// </summary>
/// <param name="propertyMappings">The EPM mappings to check this cache against.</param>
/// <returns>true if the <paramref name="propertyMappings"/> are not the same as the ones the cache has been created for (or have changed).</returns>
internal bool IsDirty(ODataEntityPropertyMappingCollection propertyMappings)
{
DebugUtils.CheckNoExternalCallers();
// NOTE: we only allow adding more mappings to an existing collection; so if the
// references of the collections are the same and the counts are the same there has been no change.
if (this.mappings == null && propertyMappings == null)
{
return(false);
}
if (!object.ReferenceEquals(this.mappings, propertyMappings))
{
return(true);
}
return(this.mappings.Count != propertyMappings.Count);
}
internal void BuildEpmForType(IEdmEntityType definingEntityType, IEdmEntityType affectedEntityType)
{
if (definingEntityType.BaseType != null)
{
this.BuildEpmForType(definingEntityType.BaseEntityType(), affectedEntityType);
}
ODataEntityPropertyMappingCollection entityPropertyMappings = this.model.GetEntityPropertyMappings(definingEntityType);
if (entityPropertyMappings != null)
{
foreach (EntityPropertyMappingAttribute attribute in entityPropertyMappings)
{
this.epmSourceTree.Add(new EntityPropertyMappingInfo(attribute, definingEntityType, affectedEntityType));
if ((definingEntityType == affectedEntityType) && !PropertyExistsOnType(affectedEntityType, attribute))
{
this.MappingsForInheritedProperties.Add(attribute);
this.MappingsForDeclaredProperties.Remove(attribute);
}
}
}
}
private static void LoadEpmAnnotations(this IEdmModel model, IEdmElement annotatable, ODataEntityPropertyMappingCollection mappings, string typeName, IEdmProperty property)
{
IEnumerable <EpmAnnotationValues> enumerable = model.ParseSerializableEpmAnnotations(annotatable, typeName, property);
if (enumerable != null)
{
foreach (EpmAnnotationValues values in enumerable)
{
EntityPropertyMappingAttribute mapping = ValidateAnnotationValues(values, typeName, property);
mappings.Add(mapping);
}
}
}