公开(公告)号：US20100114824A1

公开(公告)日：2010-05-06

申请号：US12420364

申请日：2009-04-08

申请人： Muralidhar Krishnaprasad ,  Anil K. Nori ,  Lu Xun ,  Anurag Gupta ,  Manoj Valiyaparambil

发明人： Muralidhar Krishnaprasad ,  Anil K. Nori ,  Lu Xun ,  Anurag Gupta ,  Manoj Valiyaparambil

IPC分类号： G06F17/30

CPC分类号： G06F11/2094 ,  G06F11/2097

摘要： Systems and methods that supply a replication layer/agent that is generic to supporting a plurality of storage configuration as part of a distributed store. Such distributed store employs a Common Availability Substrate (CAS) for data transport and consistency, to render the distributed store scalable and available. Such an arrangement enables continuous operation of the store, while the replication subsystem creates new replicas (e.g., for load balancing, failover, and the like).

摘要翻译： 提供复制层/代理的系统和方法，该复制层/代理通用以支持多个存储配置作为分布式存储的一部分。 这种分布式存储使用公共可用性基板（CAS）进行数据传输和一致性，以使分布式存储可扩展和可用。 这样的布置使得能够连续地操作商店，而复制子系统创建新的副本（例如，用于负载平衡，故障切换等）。

公开(公告)号：US20100106915A1

公开(公告)日：2010-04-29

申请号：US12463745

申请日：2009-05-11

申请人： Muralidhar Krishnaprasad ,  Gopal Krishan ,  Lakshmi Suresh Goduguluru ,  Ankur Agrawal ,  Balachandar Pavadaisamy

发明人： Muralidhar Krishnaprasad ,  Gopal Krishan ,  Lakshmi Suresh Goduguluru ,  Ankur Agrawal ,  Balachandar Pavadaisamy

IPC分类号： G06F12/08

CPC分类号： G06F12/0873 ,  G06F12/0811 ,  G06F2212/264 ,  G06F2212/284

摘要： Systems and methods that supply poll based notification system in a distributed cache, for tracking changes to cache items. Local caches on the client can employ the notification system to keep the local objects in sync with the backend cache service; and can further dynamically adjust the “scope” of notifications required based on the number and distribution of keys in the local cache. The server can maintain the changes in an efficient fashion (in blocks) and returns the changes to clients that perform the appropriate filtering. Notifications can be associated with a session and/or an application.

摘要翻译： 在分布式缓存中提供基于轮询的通知系统的系统和方法，用于跟踪缓存项目的更改。 客户端上的本地缓存可以使用通知系统来保持本地对象与后端缓存服务同步; 并且可以基于本地缓存中的密钥的数量和分布进一步动态地调整所需通知的“范围”。 服务器可以以有效的方式（以块为单位）维护更改，并将更改返回给执行适当过滤的客户端。 通知可以与会话和/或应用程序相关联。

公开(公告)号：US07685137B2

公开(公告)日：2010-03-23

申请号：US11044472

申请日：2005-01-26

申请人： Zhen Hua Liu ,  Muralidhar Krishnaprasad ,  Vikas Arora ,  James W. Warner ,  Anand Manikutty

发明人： Zhen Hua Liu ,  Muralidhar Krishnaprasad ,  Vikas Arora ,  James W. Warner ,  Anand Manikutty

IPC分类号： G06F7/00

CPC分类号： G06F17/2247

摘要： A universal format is used to create a type representation of XMLType instances that are generated in various ways from various sources. An XMLType Type Tree is represented as a hierarchy of nodes, including leaf item node, composite item node, operator node, aggregate node, referred to herein as an XMLType Type Tree. An XMLType Type Tree serves as a digest of the type structure of XMLType, no matter the source of the XMLType instance or its manner of its generation and it creates one uniform abstraction of the type structure of XMLType for the data-typing analysis of XPath and XQuery during query compile time.

摘要翻译： 通用格式用于创建以各种方式生成的XMLType实例的类型表示形式。 XMLType类型树被表示为节点的层次结构，包括叶项目节点，复合项目节点，运营商节点，聚合节点，这里称为XMLType类型树。 XMLType类型树作为XMLType的类型结构的摘要，无论XMLType实例的来源或其生成方式如何，它都会为XPath的数据类型分析创建XMLType类型结构的一个统一抽象， 查询编译期间的XQuery。

公开(公告)号：US07668806B2

公开(公告)日：2010-02-23

申请号：US10948536

申请日：2004-09-22

申请人： Zhen Hua Liu ,  Muralidhar Krishnaprasad ,  Anand Manikutty ,  James Warner ,  Qin Yu ,  Hui X. Zhang ,  Karuna Muthiah ,  Ying Lu ,  Vikas Arora ,  Susan M. Kotsovolos

发明人： Zhen Hua Liu ,  Muralidhar Krishnaprasad ,  Anand Manikutty ,  James Warner ,  Qin Yu ,  Hui X. Zhang ,  Karuna Muthiah ,  Ying Lu ,  Vikas Arora ,  Susan M. Kotsovolos

IPC分类号： G06F17/30

CPC分类号： G06F17/30545 ,  G06F17/30935 ,  Y10S707/99933

摘要： Techniques are provided for processing a query, including receiving the query, where the query specifies certain operations to be performed, including (a) a first set of one or more operations that are to be performed on a markup language data source and (b) a second set of one or more operations that are to be performed on a second data source. Then it is determined that a first server that manages the markup language data source is capable of performing the first set of operations. A request is sent to the first server to perform the first set of operations. A response is received, where the response contains results of performing the first set of operations on the markup language data source. Finally, results are generated for the query based at least in part on the results of performing the first set of operations.

摘要翻译： 提供了用于处理查询的技术，包括接收查询，其中查询指定要执行的某些操作，包括（a）要在标记语言数据源上执行的一个或多个操作的第一组，以及（b） 要在第二数据源上执行的一个或多个操作的第二组。 然后，确定管理标记语言数据源的第一服务器能够执行第一组操作。 发送请求到第一台服务器执行第一组操作。 收到响应，其中响应包含对标记语言数据源执行第一组操作的结果。 最后，至少部分地基于执行第一组操作的结果为查询生成结果。

公开(公告)号：US20090313436A1

公开(公告)日：2009-12-17

申请号：US12465667

申请日：2009-05-14

申请人： Muralidhar Krishnaprasad ,  Anil Nori ,  Subramanian Muralidhar ,  Sudhir Mohan Jorwekar ,  Lakshmi Suresh Goduguluru

发明人： Muralidhar Krishnaprasad ,  Anil Nori ,  Subramanian Muralidhar ,  Sudhir Mohan Jorwekar ,  Lakshmi Suresh Goduguluru

IPC分类号： G06F12/08 ,  G06F12/00

CPC分类号： G06F12/0802 ,  G06F12/0813

摘要： A cache region can be created in a cache in response to receiving a cache region creation request from an application. A storage request from the application can identify the cache region and one or more objects to be stored in the cache region. Those objects can be stored in the cache region in response to receiving the storage request.

摘要翻译： 响应于从应用程序接收高速缓存区域创建请求，可以在高速缓存中创建高速缓存区域。 来自应用的存储请求可以识别高速缓存区域和要存储在高速缓存区域中的一个或多个对象。 响应于接收到存储请求，可以将这些对象存储在高速缓存区域中。

公开(公告)号：US07523131B2

公开(公告)日：2009-04-21

申请号：US11056312

申请日：2005-02-10

申请人： James W. Warner ,  Abhyudaya Agrawal ,  Hui Zhang ,  Muralidhar Krishnaprasad ,  Ravi Murthy ,  Zhen Hua Liu ,  Nipun Agarwal ,  Vikas Arora ,  Susan M. Kotsovolos ,  Anand Manikutty ,  Rohan Angrish

发明人： James W. Warner ,  Abhyudaya Agrawal ,  Hui Zhang ,  Muralidhar Krishnaprasad ,  Ravi Murthy ,  Zhen Hua Liu ,  Nipun Agarwal ,  Vikas Arora ,  Susan M. Kotsovolos ,  Anand Manikutty ,  Rohan Angrish

IPC分类号： G06F17/00

CPC分类号： G06F17/30917 ,  Y10S707/99934 ,  Y10S707/99943

摘要： To associate XML data objects (“child objects”), stored in rows of relational or object-relational tables, with the appropriate XML data objects (“parent objects”) from which the child objects descend, tables that contain child objects (“out-of-line” tables) are constructed with an additional column. In one embodiment, this column stores values that identify the root objects, in the appropriate table, from which the respective child objects descend. Hence, the root object from which any given object descends is traceable by following the respective value back to the corresponding root object. In one embodiment, this column stores values that identify the complete XML hierarchical path, through multiple tables, back to the root object from which the respective child objects descend. Consequently, XML query language queries against XML documents stored in such tables can be rewritten as SQL queries against the data in the tables, even in the presence of cyclic constructs.

摘要翻译： 将存储在关系关系表或对象关系表行中的XML数据对象（“子对象”）与子对象所属的相应XML数据对象（“父对象”）相关联，包含子对象的表（“out” -line“表）用另外的列构造。 在一个实施例中，该列存储识别相应子对象下降的适当表中的根对象的值。 因此，通过将相应的值追溯到相应的根对象，可以追溯任何给定对象下降的根对象。 在一个实施例中，该列将通过多个表标识完整的XML分层路径的值存储回到相应子对象从其下降的根对象。 因此，即使在存在循环结构的情况下，存储在这些表中的XML文档的XML查询语言查询可以重写为表中数据的SQL查询。

公开(公告)号：US20080016088A1

公开(公告)日：2008-01-17

申请号：US11486798

申请日：2006-07-13

申请人： Zhen Hua Liu ,  Muralidhar Krishnaprasad

发明人： Zhen Hua Liu ,  Muralidhar Krishnaprasad

IPC分类号： G06F7/00

CPC分类号： G06F16/86

摘要： A method and apparatus for optimizing XML queries over heterogeneous XML tables is provided. A query that targets a container (e.g. table or collection) that contains a plurality of XML documents is received, wherein at least two XML documents in the plurality do not conform to the same schema. Based on the received query, a plurality of execution plans is generated. Each execution plan is associated with a different XML schema. An execution plan is used to execute the query relative to those XML documents that conform to the XML schema associated with the execution plan.

摘要翻译： 提供了一种用于在异构XML表上优化XML查询的方法和装置。 接收到针对包含多个XML文档的容器（例如表或集合）的查询，其中多个中的至少两个XML文档不符合相同的模式。 基于接收到的查询，生成多个执行计划。 每个执行计划与不同的XML模式相关联。 执行计划用于执行相对于符合与执行计划相关联的XML模式的那些XML文档的查询。

公开(公告)号：US20070299834A1

公开(公告)日：2007-12-27

申请号：US11474038

申请日：2006-06-23

申请人： Zhen Hua Liu ,  Muralidhar Krishnaprasad ,  Hui Joe Chang ,  Anand Manikutty ,  James W. Warner ,  Vikas Arora ,  Susan Kotsovolos

发明人： Zhen Hua Liu ,  Muralidhar Krishnaprasad ,  Hui Joe Chang ,  Anand Manikutty ,  James W. Warner ,  Vikas Arora ,  Susan Kotsovolos

IPC分类号： G06F17/30

CPC分类号： G06F17/30935

摘要： A method for processing queries is provided. A first representation of a query is generated, where the query includes a certain operator that is to be performed based on an XPath expression that is expandable into multiple location paths. The first representation of the query is rewritten into a second representation that corresponds to an equivalent query, where rewriting the first representation includes expanding the XPath expression into the plurality of location paths and, based on the certain operator, including a plurality of operators in the second representation, where the plurality of operators include: a first set of operators that is to be performed based on each of the plurality of location paths, and a second set of operators that is to be performed based on data returned from at least one operator included in the first set of operators. The query may thereafter be executed based on the second representation. The second representation may be further rewritten to third representation depending on the physical storage of XML.

摘要翻译： 提供了一种处理查询的方法。 生成查询的第一个表示形式，其中查询包含一个基于可扩展到多个位置路径的XPath表达式执行的某个运算符。 查询的第一表示被重写成对应于等效查询的第二表示，其中重写第一表示包括将XPath表达式扩展到多个位置路径中，并且基于特定运算符，包括多个运算符 第二表示，其中所述多个运算符包括：将基于所述多个位置路径中的每一个来执行的第一组运算符，以及将基于从至少一个运算符返回的数据来执行的第二组运算符 包含在第一组运算符中。 此后可以基于第二表示来执行查询。 取决于XML的物理存储，第二表示可以进一步重写为第三表示。

公开(公告)号：US20070208726A1

公开(公告)日：2007-09-06

申请号：US11648981

申请日：2007-01-03

申请人： Muralidhar Krishnaprasad ,  Joaquin A. Delgado ,  Meeten Bhavsar

发明人： Muralidhar Krishnaprasad ,  Joaquin A. Delgado ,  Meeten Bhavsar

IPC分类号： G06F17/30

CPC分类号： G06F16/3334

摘要： Systems, methods, and other embodiments associated with query processing in light of an ontology are described. One example system includes a data store that stores both data concerning entities and data concerning relationships between the entities. The data may be logically arranged as an ontology and thus may include nodes and labeled relationships. The system may also include a query processing logic that can control a search logic to search for documents relevant to a query. Control exercised by the query processing logic may depend, at least in part, on data in the ontology.

摘要翻译： 描述了根据本体论与查询处理相关联的系统，方法和其他实施例。 一个示例性系统包括存储有关实体的数据和关于实体之间的关系的数据的数据存储。 数据可以逻辑地排列成本体，并且因此可以包括节点和标记的关系。 该系统还可以包括可以控制搜索逻辑来搜索与查询相关的文档的查询处理逻辑。 由查询处理逻辑执行的控制可以至少部分地取决于本体的数据。

公开(公告)号：US20070011167A1

公开(公告)日：2007-01-11

申请号：US11243345

申请日：2005-10-03

申请人： Muralidhar Krishnaprasad ,  Zhen Liu ,  Vikas Arora

发明人： Muralidhar Krishnaprasad ,  Zhen Liu ,  Vikas Arora

IPC分类号： G06F17/30 ,  G06F7/00

CPC分类号： G06F17/30471 ,  G06F17/301

摘要： Constraints that restrict how corresponding identifiable groups of files are stored in a database, are enforced on corresponding file data. In response to a query on any data from an identifiable group of files, the effect of the constraint on how the corresponding data is stored is determined. The original query is rewritten, based on the effect of the constraint, so that the rewritten query is directed to a particular subset of the data stored in the database. Consequently, the search space is restricted to an identifiable subset of the database and execution of the rewritten query is more efficient than execution of the original query.

摘要翻译： 在相应的文件数据上强制限制如何将对应的可识别文件组存储在数据库中。 响应于来自可识别文件组的任何数据的查询，确定约束对如何存储相应数据的影响。 基于约束的影响，原始查询被重写，使得重写的查询被定向到存储在数据库中的数据的特定子集。 因此，搜索空间限于数据库的可识别子集，并且重写的查询的执行比执行原始查询更有效。