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);
}
/// <summary>
/// Ensures that an up-to-date EPM cache exists for the specified <paramref name="entityType"/>.
/// If no cache exists, a new one will be created based on the public mappings (if any).
/// If the public mappings have changed (and the cache is thus dirty), the method re-constructs the cache.
/// If all public mappings have been removed, the method also removes the EPM cache.
/// </summary>
/// <param name="model">IEdmModel instance containing the annotations.</param>
/// <param name="entityType">IEdmEntityType instance for which to ensure the EPM cache.</param>
/// <param name="maxMappingCount">The maximum allowed number of entity property mappings
/// for a given entity type (on the type itself and all its base types).</param>
/// <param name="cacheModified">true if the cache was modified; otherwise false.</param>
/// <returns>An instance of <see cref="ODataEntityPropertyMappingCache"/>, if there are any EPM mappings for the given entity type, otherwise returns null.</returns>
private static ODataEntityPropertyMappingCache EnsureEpmCacheInternal(
IEdmModel model,
IEdmEntityType entityType,
int maxMappingCount,
out bool cacheModified)
{
cacheModified = false;
if (entityType == null)
{
return null;
}
// Make sure the EPM of the base type is initialized.
IEdmEntityType baseEntityType = entityType.BaseEntityType();
ODataEntityPropertyMappingCache baseCache = null;
if (baseEntityType != null)
{
baseCache = EnsureEpmCacheInternal(model, baseEntityType, maxMappingCount, out cacheModified);
}
ODataEntityPropertyMappingCache epmCache = model.GetEpmCache(entityType);
if (model.HasOwnOrInheritedEpm(entityType))
{
ODataEntityPropertyMappingCollection mappings = model.GetEntityPropertyMappings(entityType);
bool needToBuildCache = epmCache == null || cacheModified || epmCache.IsDirty(mappings);
if (needToBuildCache)
{
cacheModified = true;
int totalMappingCount = ValidationUtils.ValidateTotalEntityPropertyMappingCount(baseCache, mappings, maxMappingCount);
epmCache = new ODataEntityPropertyMappingCache(mappings, model, totalMappingCount);
// Build the EPM tree and validate it
try
{
epmCache.BuildEpmForType(entityType, entityType);
epmCache.EpmSourceTree.Validate(entityType);
epmCache.EpmTargetTree.Validate();
// We set the annotation here, so if anything fails during
// building of the cache the annotation will not even be set so
// not leaving the type in an inconsistent state.
model.SetAnnotationValue(entityType, epmCache);
}
catch
{
// Remove an existing EPM cache if it is dirty to make sure we don't leave
// stale caches in case building of the cache fails.
// NOTE: we do this in the catch block to ensure that we always make a single
// SetAnnotation call to either set or clear the existing annotation
// since the SetAnnotation method is thread-safe
model.RemoveEpmCache(entityType);
throw;
}
}
}
else
{
if (epmCache != null)
{
// remove an existing EPM cache if the mappings have been removed from the type
cacheModified = true;
model.RemoveEpmCache(entityType);
}
}
return epmCache;
}
internal static void SaveEpmAnnotationsForProperty(this IEdmModel model, IEdmProperty property, ODataEntityPropertyMappingCache epmCache)
{
bool flag;
bool flag2;
Func <EntityPropertyMappingAttribute, bool> predicate = null;
string propertyName = property.Name;
IEnumerable <EntityPropertyMappingAttribute> source = epmCache.MappingsForDeclaredProperties.Where <EntityPropertyMappingAttribute>(delegate(EntityPropertyMappingAttribute m) {
if (!m.SourcePath.StartsWith(propertyName, StringComparison.Ordinal))
{
return(false);
}
if (m.SourcePath.Length != propertyName.Length)
{
return(m.SourcePath[propertyName.Length] == '/');
}
return(true);
});
if (property.Type.IsODataPrimitiveTypeKind())
{
flag = true;
flag2 = false;
}
else
{
flag2 = true;
if (predicate == null)
{
predicate = m => m.SourcePath == propertyName;
}
flag = source.Any <EntityPropertyMappingAttribute>(predicate);
}
model.SaveEpmAnnotations(property, source, flag, flag2);
}
/// <summary>
/// Saves the EPM annotations on the given <paramref name="property"/>.
/// </summary>
/// <param name="model">The <see cref="IEdmModel"/> containing the annotations.</param>
/// <param name="property">The <see cref="IEdmProperty"/> to save the EPM annotations for.</param>
/// <param name="epmCache">The EPM cache for the owning entity type.</param>
internal static void SaveEpmAnnotationsForProperty(this IEdmModel model, IEdmProperty property, ODataEntityPropertyMappingCache epmCache)
{
DebugUtils.CheckNoExternalCallers();
Debug.Assert(model != null, "model != null");
Debug.Assert(property != null, "property != null");
Debug.Assert(epmCache != null, "epmCache != null");
// get the mappings for the current property; this is based on the source path of the mapping
string propertyName = property.Name;
IEnumerable<EntityPropertyMappingAttribute> propertyMappings = epmCache.MappingsForDeclaredProperties.Where(
m => m.SourcePath.StartsWith(propertyName, StringComparison.Ordinal) &&
(m.SourcePath.Length == propertyName.Length || m.SourcePath[propertyName.Length] == '/'));
bool skipSourcePath;
bool removePrefix;
if (property.Type.IsODataPrimitiveTypeKind())
{
// Since only a single mapping from a primitive property can exist, it is fine to not write the source path.
Debug.Assert(propertyMappings.Count() <= 1, "At most one entity property mapping can exist from a primitive property.");
skipSourcePath = true;
removePrefix = false;
}
else
{
Debug.Assert(
property.Type.IsODataComplexTypeKind() || property.Type.IsNonEntityODataCollectionTypeKind(),
"Only primitive, complex or collectionValue properties can have EPM defined on them.");
removePrefix = true;
skipSourcePath = propertyMappings.Any(m => m.SourcePath == propertyName);
Debug.Assert(
!skipSourcePath || propertyMappings.Count() == 1,
"We must not have multiple mappings for a property if one of them matches the property name exactly (the other ones would not make sense).");
}
model.SaveEpmAnnotations(property, propertyMappings, skipSourcePath, removePrefix);
}
internal static int ValidateTotalEntityPropertyMappingCount(ODataEntityPropertyMappingCache baseCache, ODataEntityPropertyMappingCollection mappings, int maxMappingCount)
{
int num = (baseCache == null) ? 0 : baseCache.TotalMappingCount;
int num2 = (mappings == null) ? 0 : mappings.Count;
int num3 = num + num2;
if (num3 > maxMappingCount)
{
throw new ODataException(Microsoft.Data.OData.Strings.ValidationUtils_MaxNumberOfEntityPropertyMappingsExceeded(num3, maxMappingCount));
}
return num3;
}
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;
}
internal static void SaveEpmAnnotationsForProperty(this IEdmModel model, IEdmProperty property, ODataEntityPropertyMappingCache epmCache)
{
bool flag;
bool flag2;
Func<EntityPropertyMappingAttribute, bool> predicate = null;
string propertyName = property.Name;
IEnumerable<EntityPropertyMappingAttribute> source = epmCache.MappingsForDeclaredProperties.Where<EntityPropertyMappingAttribute>(delegate (EntityPropertyMappingAttribute m) {
if (!m.SourcePath.StartsWith(propertyName, StringComparison.Ordinal))
{
return false;
}
if (m.SourcePath.Length != propertyName.Length)
{
return m.SourcePath[propertyName.Length] == '/';
}
return true;
});
if (property.Type.IsODataPrimitiveTypeKind())
{
flag = true;
flag2 = false;
}
else
{
flag2 = true;
if (predicate == null)
{
predicate = m => m.SourcePath == propertyName;
}
flag = source.Any<EntityPropertyMappingAttribute>(predicate);
}
model.SaveEpmAnnotations(property, source, flag, flag2);
}
/// <summary>
/// Validates that the total number of entity property mapping attributes on the base entity type and the current
/// entity type does not exceed the specified security limit.
/// </summary>
/// <param name="baseCache">The EPM cache of the base entity type or null if no base entity type exists.</param>
/// <param name="mappings">The EPM collection of the current entity type.</param>
/// <param name="maxMappingCount">The maximum number of mappings allowed for an entity type (on the type itself and all its base types).</param>
/// <returns>The total number of entity property mappings for the current entity type.</returns>
internal static int ValidateTotalEntityPropertyMappingCount(ODataEntityPropertyMappingCache baseCache, ODataEntityPropertyMappingCollection mappings, int maxMappingCount)
{
DebugUtils.CheckNoExternalCallers();
int countOfMappingsOnBaseTypes = baseCache == null ? 0 : baseCache.TotalMappingCount;
int countOfMappingsOnCurrentType = mappings == null ? 0 : mappings.Count;
int totalMappingCount = countOfMappingsOnBaseTypes + countOfMappingsOnCurrentType;
if (totalMappingCount > maxMappingCount)
{
throw new ODataException(Strings.ValidationUtils_MaxNumberOfEntityPropertyMappingsExceeded(totalMappingCount, maxMappingCount));
}
return totalMappingCount;
}
