/// <summary>
/// Ensures the metadata is refreshed and uptodate and returns it.
/// </summary>
/// <param name="entityName"></param>
/// <returns></returns>
public CrmEntityMetadata RefreshEntityMetadata(string entityName)
{
bool isPresent = true;
var result = _Metadata.GetOrAdd(entityName, p =>
{
isPresent = false;
var metadata = _repository.GetChanges(entityName, null);
var entMeta = metadata.EntityMetadata[0];
var crment = new CrmEntityMetadata()
{
Attributes = entMeta.Attributes.ToList(),
EntityName = entityName,
Timestamp = metadata.ServerVersionStamp
};
return(crment);
});
if (!isPresent)
{
// it wasn;t present in the cache, so return the result as its currently the latest.
return(result);
}
// refresh the metadata
// it was present in the cache, so get check for changes and update if required before returning.
Debug.WriteLine("Refreshing metadata for entity: " + entityName, "Metadata");
var changes = _repository.GetChanges(entityName, result.Timestamp);
// update existing metadata..
var latestEntityMetadata = changes.EntityMetadata[0];
// Detect new / deleted fields.
List <AttributeMetadata> modifiedFields = null;
List <Guid> deletedFields = null;
if (latestEntityMetadata.HasChanged.GetValueOrDefault())
{
modifiedFields = latestEntityMetadata.Attributes.Where(att => att.HasChanged.GetValueOrDefault()).ToList();
deletedFields = changes.DeletedMetadata != null &&
changes.DeletedMetadata.ContainsKey(DeletedMetadataFilters.Attribute)
? changes.DeletedMetadata[DeletedMetadataFilters.Attribute].ToList()
: null;
// Work out what was changed..
// var deletedFields = latestEntityMetadataResponse.DeletedMetadata.Where(att => att.HasChanged.GetValueOrDefault()).ToList();
}
// Loop through all metadata items, and add missing change units.
bool hasSchemaChanges = (modifiedFields != null && modifiedFields.Any()) || (deletedFields != null && deletedFields.Any());
if (hasSchemaChanges)
{
Debug.WriteLine("Updating metadata for entity: " + entityName, "Metadata");
result.Refresh(modifiedFields, deletedFields);
}
return(result);
}
/// <summary>
/// Returns the metadata for an entity.
/// </summary>
/// <param name="entityName"></param>
/// <returns></returns>
public CrmEntityMetadata GetEntityMetadata(string entityName)
{
var changes = _Metadata.GetOrAdd(entityName, p =>
{
Debug.WriteLine("Retrieving metadata for entity: " + entityName, "Metadata");
var metadata = _repository.GetChanges(entityName, null);
var entMeta = metadata.EntityMetadata[0];
var result = new CrmEntityMetadata()
{
Attributes = entMeta.Attributes.ToList(),
EntityName = entityName,
Timestamp = metadata.ServerVersionStamp
};
return(result);
});
return(changes);
}
