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发明授权
US08949455B2 Path-caching mechanism to improve performance of path-related operations in a repository 有权
路径缓存机制，以提高存储库中路径相关操作的性能

Path-caching mechanism to improve performance of path-related operations in a repository
摘要：
A method and apparatus for processing path-based database operations is provided. According to one aspect, a path cache is maintained. For each hierarchical node that is traversed during a path-determining operation, it is determined whether a cache entry corresponding to that node is already contained in the path cache. If such a cache entry is already contained in the path cache, then the path indicated in that cache entry is used to complete the pathname for the node for which the operation is being performed. As a result, hierarchically higher nodes do not need to be traversed to complete the operation. Alternatively, if such a cache entry is not already contained in the path cache, then a cache entry for the node currently being traversed is generated and inserted into the path cache for use in subsequent path-determining operations.
摘要（中）：

提供了一种用于处理基于路径的数据库操作的方法和装置。 根据一个方面，维护路径高速缓存。 对于在路径确定操作期间遍历的每个分级节点，确定与该节点相对应的高速缓存条目是否已经包含在路径高速缓存中。 如果这样的缓存条目已经包含在路径缓存中，则使用该缓存条目中指示的路径来完成正在执行该操作的节点的路径名。 因此，不需要遍历层次更高的节点来完成操作。 或者，如果这样的高速缓存条目尚未包含在路径高速缓存中，则生成用于当前正在遍历的节点的高速缓存条目并将其插入到路径高速缓存中以用于随后的路径确定操作。

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