/// <summary>Removes an annotation with the specified name.</summary>
/// <param name="name">The name of the annotation property.</param>
/// <returns>true if an annotation was removed; otherwise, false.</returns>
public bool RemoveAnnotation(string name)
{
Check.NotEmpty(name, nameof(name));
MetadataPropertyCollection metadataProperties = this.GetMetadataProperties();
MetadataProperty metadataProperty;
if (metadataProperties.TryGetValue(name, false, out metadataProperty))
{
return(metadataProperties.Remove(metadataProperty));
}
return(false);
}
internal MetadataPropertyCollection GetMetadataProperties()
{
if (this._itemAttributes == null)
{
MetadataPropertyCollection propertyCollection = new MetadataPropertyCollection(this);
if (this.IsReadOnly)
{
propertyCollection.SetReadOnly();
}
Interlocked.CompareExchange <MetadataPropertyCollection>(ref this._itemAttributes, propertyCollection, (MetadataPropertyCollection)null);
}
return(this._itemAttributes);
}
internal MetadataPropertyCollection GetMetadataProperties()
{
if (null == _itemAttributes)
{
var itemAttributes = new MetadataPropertyCollection(this);
if (IsReadOnly)
{
itemAttributes.SetReadOnly();
}
Interlocked.CompareExchange(
ref _itemAttributes, itemAttributes, null);
}
return(_itemAttributes);
}
private static IEnumerable <MetadataProperty> GetSystemMetadataProperties(
MetadataItem item)
{
return(MetadataPropertyCollection.GetItemTypeInformation(item.GetType()).GetItemAttributes(item));
}
internal MetadataPropertyCollection(MetadataItem item)
: base(MetadataPropertyCollection.GetSystemMetadataProperties(item))
{
}