PropertyDatabase.InvalidateMask

参数

描述

使从与文档密钥掩码相符的多个文档存储的所有属性失效。

此操作比更简单的 PropertyDatabase.Invalidate 慢，因为我们不能依赖二分查找来查找与掩码相符的所有键。

// Store properties of multiple documents.
for (ulong i = 0; i < 10; ++i)
{
    for (var j = 0; j < 10; ++j)
        propertyDatabase.Store(i, PropertyDatabase.CreatePropertyHash($"prop{j}"), $"value{j}");
}
// Invalidate all documents that match any set bits of the mask.
ulong invalidatedDocumentMask = 2;
propertyDatabase.InvalidateMask(invalidatedDocumentMask);

// The invalidated documents can no longer be retrieved.
for (ulong i = 0; i < 10; ++i)
{
    if ((i & invalidatedDocumentMask) == 0)
        continue;
    if (propertyDatabase.TryLoad(i, out IEnumerable<object> invalidatedDocumentValues))
        Assert.Fail("TryLoad should have failed to retrieve the invalidated document values.");
}

其他资源：PropertyDatabase.CreateDocumentKey。