公开(公告)号：US09256607B2

公开(公告)日：2016-02-09

申请号：US13692014

申请日：2012-12-03

Applicant: Oracle International Corporation

Inventor： Sam Idicula ,  Sabina Petride ,  Bhushan Khaladkar ,  Nipun Agarwal

IPC: G06F7/00 ,  G06F17/00 ,  G06F17/30 ,  G06F12/08

CPC classification number: G06F17/30097 ,  G06F12/0811 ,  G06F12/084 ,  G06F17/30929

Abstract: A two-level cache to facilitate resolving resource path expressions for a hierarchy of resources is described, which includes a system-wide shared cache and a session-level cache. The shared cache is organized as a hierarchy of hash tables that mirrors the structure of a repository hierarchy. A particular hash table in a shared cache includes information for the child resources of a particular resource. A database management system that manages a shared cache may control the amount of memory used by the cache by implementing a replacement policy for the cache based on one or more characteristics of the resources in the repository. The session-level cache is a single level cache in which information for target resources of resolved path expressions may be tracked. In the session-level cache, the resource information is associated with the entire path expression of the associated resource.

Abstract translation: 描述了用于促进解决资源层级的资源路径表达式的两级缓存，其包括系统范围共享高速缓存和会话级缓存。 共享缓存被组织为映射存储库层次结构的散列表的层次结构。 共享缓存中的特定哈希表包括特定资源的子资源的信息。 管理共享高速缓存的数据库管理系统可以基于存储库中的资源的一个或多个特性来实现对高速缓存的替换策略来控制高速缓存所使用的存储器量。 会话级缓存是单级缓存，其中可以跟踪解析的路径表达式的目标资源的信息。 在会话级缓存中，资源信息与相关资源的整个路径表达式相关联。

公开(公告)号：US20130097175A1

公开(公告)日：2013-04-18

申请号：US13692014

申请日：2012-12-03

Applicant: Oracle International Corporation

Inventor： Sam Idicula ,  Sabina Petride ,  Bhushan Khaladkar ,  Nipun Agarwal

IPC: G06F17/30

CPC classification number: G06F17/30097 ,  G06F12/0811 ,  G06F12/084 ,  G06F17/30929

Abstract: A two-level cache to facilitate resolving resource path expressions for a hierarchy of resources is described, which includes a system-wide shared cache and a session-level cache. The shared cache is organized as a hierarchy of hash tables that mirrors the structure of a repository hierarchy. A particular hash table in a shared cache includes information for the child resources of a particular resource. A database management system that manages a shared cache may control the amount of memory used by the cache by implementing a replacement policy for the cache based on one or more characteristics of the resources in the repository. The session-level cache is a single level cache in which information for target resources of resolved path expressions may be tracked. In the session-level cache, the resource information is associated with the entire path expression of the associated resource.

Abstract translation: 描述了用于促进解决资源层级的资源路径表达式的两级缓存，其包括系统范围共享高速缓存和会话级缓存。 共享缓存被组织为映射存储库层次结构的散列表的层次结构。 共享缓存中的特定哈希表包括特定资源的子资源的信息。 管理共享高速缓存的数据库管理系统可以基于存储库中的资源的一个或多个特性来实现对高速缓存的替换策略来控制高速缓存所使用的存储器量。 会话级缓存是单级缓存，其中可以跟踪解析的路径表达式的目标资源的信息。 在会话级缓存中，资源信息与相关资源的整个路径表达式相关联。