公开(公告)号：US07051039B1

公开(公告)日：2006-05-23

申请号：US10259176

申请日：2002-09-27

申请人： Ravi Murthy ,  Eric Sedlar ,  Nipun Agarwal ,  Sam Idicula ,  Nicolas Montoya

发明人： Ravi Murthy ,  Eric Sedlar ,  Nipun Agarwal ,  Sam Idicula ,  Nicolas Montoya

IPC分类号： G06F7/00 ,  G06F17/00

CPC分类号： G06F21/6227 ,  G06F2221/2145 ,  Y10S707/99935 ,  Y10S707/99938 ,  Y10S707/99943 ,  Y10S707/99944 ,  Y10S707/99945

摘要： Techniques are provided for facilitating uniform access control to data managed by a database server that can emulate hierarchically organized systems, whether the data is accessed through hierarchical or relational access mechanisms. A database server that can emulate hierarchically organized systems uses separate relational or object-relational database tables to store the content of the resources that belong to a hierarchy (the “content structures”) and information that captures the hierarchy (the “hierarchy structures”). Both types of structures contain access control data that define consistent user access privileges. To determine access privileges for a user requesting access to data in the database, access control information is accessed in the hierarchy structures when the request is made through the hierarchical access mechanism, or accessed in the content structures when the request is made through a relational access mechanism. Access control is consistent between the hierarchical or relational access mechanisms because access through either is governed by user access data that reflects the same privileges.

摘要翻译： 提供了技术，用于促进对数据库服务器管理的数据的统一访问控制，数据库服务器可以模拟分层组织的系统，无论数据是通过分级或关系访问机制访问的。 可以模拟分级组织的系统的数据库服务器使用单独的关系或对象关系数据库表来存储属于层次结构的资源的内容（“内容结构”）和捕获层次结构的信息（“层次结构”） 。 这两种类型的结构都包含定义一致的用户访问权限的访问控制数据。 为了确定请求访问数据库中的数据的用户的访问权限，当通过分层访问机制进行请求时，在层次结构中访问访问控制信息，或者当通过关系访问进行请求时在内容结构中访问访问控制信息 机制。 访问控制在分级或关系访问机制之间是一致的，因为通过任何一个访问控制的用户访问数据反映相同的权限。

公开(公告)号：US09043308B2

公开(公告)日：2015-05-26

申请号：US13351448

申请日：2012-01-17

申请人： Asha Tarachandani ,  Bhushan Khaladkar ,  Sam Idicula ,  Adiel Yoaz ,  Nipun Agarwal

发明人： Asha Tarachandani ,  Bhushan Khaladkar ,  Sam Idicula ,  Adiel Yoaz ,  Nipun Agarwal

IPC分类号： G06F7/00 ,  G06F17/30

CPC分类号： G06F17/30471 ,  G06F17/30477

摘要： Techniques are provided to achieve performance improvements for path-based access to hierarchical data and for utilizing an extensible indexing framework. Extensible operators may be optimized by evaluating the operators using functions native to the database system instead of using functions defined through an extensible indexing mechanism. Furthermore, the database system may resolve a resource path of a query when the query is compiled, and may store the mapping of the resource path to one or more resources in a cursor for the query execution plan to avoid resolving the resource path each time the cursor is used to run the query. The cursor may be made dependent on the one or more resources to which the resource path refers at compile time. This takes advantage of the observation that the mapping of the resource path to particular resources rarely changes between evaluations of a particular query.

公开(公告)号：US20120150865A1

公开(公告)日：2012-06-14

申请号：US13351448

申请日：2012-01-17

申请人： Asha Tarachandani ,  Bhushan Khaladkar ,  Sam Idicula ,  Adiel Yoaz ,  Nipun Agarwal

发明人： Asha Tarachandani ,  Bhushan Khaladkar ,  Sam Idicula ,  Adiel Yoaz ,  Nipun Agarwal

IPC分类号： G06F17/30

CPC分类号： G06F17/30471 ,  G06F17/30477

摘要： Techniques are provided to achieve performance improvements for path-based access to hierarchical data and for utilizing an extensible indexing framework. Extensible operators may be optimized by evaluating the operators using functions native to the database system instead of using functions defined through an extensible indexing mechanism. Furthermore, the database system may resolve a resource path of a query when the query is compiled, and may store the mapping of the resource path to one or more resources in a cursor for the query execution plan to avoid resolving the resource path each time the cursor is used to run the query. The cursor may be made dependent on the one or more resources to which the resource path refers at compile time. This takes advantage of the observation that the mapping of the resource path to particular resources rarely changes between evaluations of a particular query.

摘要翻译： 提供了技术来实现基于路径的分层数据访问和利用可扩展索引框架的性能改进。 可以通过使用本机对数据库系统的功能来评估操作员而不是使用通过可扩展索引机制定义的功能来优化可扩展运算符。 此外，当查询被编译时，数据库系统可以解析查询的资源路径，并且可以将资源路径的映射存储到用于查询执行计划的游标中的一个或多个资源，以避免在每次 游标用于运行查询。 光标可以依赖于在编译时资源路径所指的一个或多个资源。 这充分利用了对特定查询的评估之间的资源路径映射到特定资源的观察很少。

公开(公告)号：US08176007B2

公开(公告)日：2012-05-08

申请号：US13026131

申请日：2011-02-11

申请人： Thuvan Hoang ,  Sam Idicula ,  Nipun Agarwal ,  Ravi Murthy ,  Asha Tarachandani ,  Namit Jain ,  Eric Sedlar

发明人： Thuvan Hoang ,  Sam Idicula ,  Nipun Agarwal ,  Ravi Murthy ,  Asha Tarachandani ,  Namit Jain ,  Eric Sedlar

IPC分类号： G06F7/00

CPC分类号： G06F17/30067 ,  G06F9/542

摘要： A method and apparatus for performing an action in response to a file system event is provided. According to one aspect, sets of “event listeners” are associated with a file hierarchy and/or the nodes thereof. Each event listener contains a set of “event handlers.” Each event handler corresponds to a separate type of event that may occur relative to the file hierarchy's nodes. When an event is going to occur relative to the hierarchy or a node thereof, all event listeners that are associated with that hierarchy/node are inspected to determine whether those event listeners contain any event handlers that correspond to the event's type. Those event handlers that correspond to the event's type are placed in an ordered list of event handlers to be invoked. As the event handlers in the list are invoked, programmatic mechanisms that correspond to those event handlers are executed to perform customized user-specified actions.

摘要翻译： 提供了一种用于响应于文件系统事件执行动作的方法和装置。 根据一个方面，“事件监听器”的集合与文件层级和/或其节点相关联。 每个事件监听器包含一组“事件处理程序”。每个事件处理程序对应于可能相对于文件层次结构节点发生的单独的事件类型。 当相对于层级或其节点将发生事件时，检查与该层级/节点相关联的所有事件监听器，以确定这些事件监听器是否包含与事件类型相对应的任何事件处理程序。 与事件类型相对应的事件处理程序被放置在要调用的事件处理程序的有序列表中。 在列表中的事件处理程序被调用时，执行与那些事件处理程序相对应的程序化机制来执行定制的用户指定的操作。

公开(公告)号：US08015165B2

公开(公告)日：2011-09-06

申请号：US11304414

申请日：2005-12-14

申请人： Sam Idicula ,  Thomas Baby ,  Nipun Agarwal ,  Ravi Murthy

发明人： Sam Idicula ,  Thomas Baby ,  Nipun Agarwal ,  Ravi Murthy

IPC分类号： G06F17/30

CPC分类号： G06F17/30235 ,  G06F17/30533

摘要： A technique and mechanism for efficiently searching across multiple versions of a resource is provided. New operators are provided that take into account the versions of a particular resource. The query engine evaluates the new operators using either an index-based approach or a functional approach. Under an index-based implementation, a hierarchical index is traversed to find a particular resource (or resources) associated with a specified path and the version history identifier associated with the particular resource(s). A version history table containing references to all versions of the particular resource(s) are then obtained. Under the functional implementation, a link table, which contains all paths in a user's workspace, is examined to determine whether the version history identifier of a particular resource matches a version history identifier of a resource specified in the link table and whether the path to the resource in the link table is related to the path specified.

摘要翻译： 提供了一种有效地搜索资源的多个版本的技术和机制。 提供了新的运算符，以考虑特定资源的版本。 查询引擎使用基于索引的方法或功能方法来评估新的运算符。 在基于索引的实现下，遍历分层索引以找到与指定路径相关联的特定资源（或资源）以及与特定资源相关联的版本历史标识符。 然后获得包含对特定资源的所有版本的引用的版本历史表。 在功能实现下，检查包含用户工作区中的所有路径的链接表，以确定特定资源的版本历史标识符是否与链接表中指定的资源的版本历史标识符是否匹配， 链接表中的资源与指定的路径相关。

公开(公告)号：US20110113036A1

公开(公告)日：2011-05-12

申请号：US12615090

申请日：2009-11-09

申请人： Sam Idicula ,  Sabina Petride ,  Bhushan Khaladkar ,  Nipun Agarwal

发明人： Sam Idicula ,  Sabina Petride ,  Bhushan Khaladkar ,  Nipun Agarwal

IPC分类号： G06F17/30 ,  G06F12/00 ,  G06F12/08

CPC分类号： G06F17/30097 ,  G06F12/0811 ,  G06F12/084 ,  G06F17/30929

摘要： 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.

摘要翻译： 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：US07921076B2

公开(公告)日：2011-04-05

申请号：US11014502

申请日：2004-12-15

申请人： Thuvan Hoang ,  Sam Idicula ,  Nipun Agarwal ,  Ravi Murthy ,  Asha Tarachandani ,  Namit Jain ,  Eric Sedlar

发明人： Thuvan Hoang ,  Sam Idicula ,  Nipun Agarwal ,  Ravi Murthy ,  Asha Tarachandani ,  Namit Jain ,  Eric Sedlar

IPC分类号： G06F7/00

CPC分类号： G06F17/30067 ,  G06F9/542

摘要： A method and apparatus for performing an action in response to a file system event is provided. According to one aspect, sets of “event listeners” are associated with a file hierarchy and/or the nodes thereof. Each event listener contains a set of “event handlers.” Each event handler corresponds to a separate type of event that may occur relative to the file hierarchy's nodes. When an event is going to occur relative to the hierarchy or a node thereof, all event listeners that are associated with that hierarchy/node are inspected to determine whether those event listeners contain any event handlers that correspond to the event's type. Those event handlers that correspond to the event's type are placed in an ordered list of event handlers to be invoked. As the event handlers in the list are invoked, programmatic mechanisms that correspond to those event handlers are executed to perform customized user-specified actions.

摘要翻译： 提供了一种用于响应于文件系统事件执行动作的方法和装置。 根据一个方面，“事件监听器”的集合与文件层级和/或其节点相关联。 每个事件监听器包含一组“事件处理程序”。每个事件处理程序对应于可能相对于文件层次结构节点发生的单独的事件类型。 当相对于层级或其节点将发生事件时，检查与该层级/节点相关联的所有事件监听器，以确定这些事件监听器是否包含与事件类型相对应的任何事件处理程序。 与事件类型相对应的事件处理程序被放置在要调用的事件处理程序的有序列表中。 在列表中的事件处理程序被调用时，执行与那些事件处理程序相对应的程序化机制来执行定制的用户指定的操作。

公开(公告)号：US07870163B2

公开(公告)日：2011-01-11

申请号：US11540341

申请日：2006-09-28

申请人： Abhyudaya Agrawal ,  Thomas Baby ,  Nipun Agarwal ,  Sam Idicula ,  Ravi Murthy ,  Eric Sedlar

发明人： Abhyudaya Agrawal ,  Thomas Baby ,  Nipun Agarwal ,  Sam Idicula ,  Ravi Murthy ,  Eric Sedlar

IPC分类号： G06F17/30

CPC分类号： G06F17/2247

摘要： In-place XML schema evolution occurs by evaluating an existing XML schema in a database system to see if it is compatible with a new XML schema. To determine if the old schema is compatible with the new schema, a lock-step traversal is performed on the two schemas. Each instruction in the old schema is compared to instructions in the new schema. Detected differences between the two schemas are evaluated to determine if existing XML documents are still compatible with the new schema. If they are, then an in-place schema evolution operation can take place. The in-place schema operation basically, involves appending the updated object information to the underlying object type and preserving the order of elements in a document by storing element mapping information on disk.

摘要翻译： 通过评估数据库系统中的现有XML模式来查看是否与新的XML模式兼容，就会发生就地XML模式演进。 为了确定旧模式是否与新模式兼容，在两个模式上执行锁步遍历。 将旧模式中的每个指令与新模式中的指令进行比较。 对两个模式之间的检测差异进行评估，以确定现有XML文档是否仍然与新模式兼容。 如果它们是，则可以进行就地模式演进操作。 就地模式操作基本上包括将更新的对象信息附加到底层对象类型，并通过在盘上存储元素映射信息来保留文档中元素的顺序。

公开(公告)号：US20090158047A1

公开(公告)日：2009-06-18

申请号：US12276182

申请日：2008-11-21

申请人： Thomas Baby ,  Asha Tarachandani ,  Naveen Zalpuri ,  Sam Idicula ,  Nipun Agarwal ,  Shu Ling ,  Ravi Murthy ,  Fredric Scott Goell ,  Eric Sedlar ,  Ming Lei ,  Ajay Desai ,  Lawrence Jacobs

发明人： Thomas Baby ,  Asha Tarachandani ,  Naveen Zalpuri ,  Sam Idicula ,  Nipun Agarwal ,  Shu Ling ,  Ravi Murthy ,  Fredric Scott Goell ,  Eric Sedlar ,  Ming Lei ,  Ajay Desai ,  Lawrence Jacobs

IPC分类号： H04L9/00

CPC分类号： H04L63/101 ,  G06F12/0813 ,  G06F12/0875 ,  G06F21/6218 ,  G06F2221/2141 ,  H04L63/20 ,  H04L67/14 ,  H04L67/142 ,  H04L67/145 ,  H04L67/28 ,  H04L67/2819 ,  H04L67/2842

摘要： In a multi-tier data server system, data from the first tier is cached in a mid-tier cache of the middle tier. Access control information from the first tier for the data is also cached within the mid-tier cache. Caching the security information in the middle tier allows the middle tier to make access control decisions regarding requests for data made by clients in the outer tier.

摘要翻译： 在多层数据服务器系统中，来自第一层的数据被缓存在中间层的中间层缓存中。 来自数据的第一层的访问控制信息也缓存在中间层缓存中。 缓存中间层的安全信息允许中间层对外层客户端的数据请求进行访问控制决策。

公开(公告)号：US20080082560A1

公开(公告)日：2008-04-03

申请号：US11540341

申请日：2006-09-28

申请人： Abhyudaya Agrawal ,  Thomas Baby ,  Nipun Agarwal ,  Sam Idicula ,  Ravi Murthy ,  Eric Sedlar

发明人： Abhyudaya Agrawal ,  Thomas Baby ,  Nipun Agarwal ,  Sam Idicula ,  Ravi Murthy ,  Eric Sedlar

IPC分类号： G06F7/00

CPC分类号： G06F17/2247

摘要： In-place XML schema evolution occurs by evaluating an existing XML schema in a database system to see if it is compatible with a new XML schema. To determine if the old schema is compatible with the new schema, a lock-step traversal is performed on the two schemas. Each instruction in the old schema is compared to instructions in the new schema. Detected differences between the two schemas are evaluated to determine if existing XML documents are still compatible with the new schema. If they are, then an in-place schema evolution operation can take place. The in-place schema operation basically, involves appending the updated object information to the underlying object type and preserving the order of elements in a document by storing element mapping information on disk.

摘要翻译： 通过评估数据库系统中的现有XML模式来查看是否与新的XML模式兼容，就会发生就地XML模式演进。 为了确定旧模式是否与新模式兼容，在两个模式上执行锁步遍历。 将旧模式中的每个指令与新模式中的指令进行比较。 对两个模式之间的检测差异进行评估，以确定现有XML文档是否仍然与新模式兼容。 如果它们是，则可以进行就地模式演进操作。 就地模式操作基本上包括将更新的对象信息附加到底层对象类型，并通过在盘上存储元素映射信息来保留文档中元素的顺序。