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    Performing an action in response to a file system event
    32.
    发明申请
    Performing an action in response to a file system event 有权
    执行响应文件系统事件的操作

    公开(公告)号：US20060129584A1

    公开(公告)日：2006-06-15

    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： G06F17/00

    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，执行与这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。

    PERFORMING AN ACTION IN RESPONSE TO A FILE SYSTEM EVENT
    34.
    发明申请
    PERFORMING AN ACTION IN RESPONSE TO A FILE SYSTEM EVENT 有权
    执行对文件系统事件的响应中的操作

    公开(公告)号：US20110137963A1

    公开(公告)日：2011-06-09

    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： G06F17/30

    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。

    Incremental maintenance of an XML index on binary XML data
    35.
    发明申请
    Incremental maintenance of an XML index on binary XML data 有权
    对二进制XML数据的XML索引的增量维护

    公开(公告)号：US20080098020A1

    公开(公告)日：2008-04-24

    申请号：US11715603

    申请日：2007-03-07

    申请人： Nitin Gupta ,  Sivasankaran Chandrasekar ,  Sam Idicula ,  Nipun Agarwal

    发明人： Nitin Gupta ,  Sivasankaran Chandrasekar ,  Sam Idicula ,  Nipun Agarwal

    IPC分类号： G06F17/30

    CPC分类号： G06F17/30911 ,  G06F17/30569

    摘要： Techniques are provided for incrementally maintaining an XML index built to access XML data that is encoded in binary XML form. Rather than delete and reinsert index entries of all the nodes of a modified XML document, only the index entries of the affected nodes are modified. Consequently, the order key values stored in the index may become inconsistent with the current hierarchical locations of the nodes to which the order key values correspond. Techniques are described for resolving the inconsistencies, and for addressing additional problems that result when the XML index is path-subsetted.

    摘要翻译： 提供了用于增量维护构建以访问以二进制XML形式编码的XML数据的XML索引的技术。 修改的XML文档的所有节点的删除和重新插入索引条目，而不是修改受影响的节点的索引条目。 因此，存储在索引中的订单键值可能与订单键值对应的节点的当前分层位置变得不一致。 描述了解决不一致的技术，以及解决当XML索引是路径子集化时产生的其他问题。

    Efficient partitioning technique while managing large XML documents
    36.
    发明申请
    Efficient partitioning technique while managing large XML documents 有权
    管理大型XML文档时的高效分区技术

    公开(公告)号：US20080091714A1

    公开(公告)日：2008-04-17

    申请号：US11716074

    申请日：2007-03-08

    申请人： Sam Idicula ,  Sivasankaran Chandrasekar ,  Nipun Agarwal

    发明人： Sam Idicula ,  Sivasankaran Chandrasekar ,  Nipun Agarwal

    IPC分类号： G06F17/00

    CPC分类号： G06F17/30923

    摘要： A method is provided to efficiently evaluate an expression to determine the partition key for an XML document stored in a database without the entire XML document first being stored in temporary memory storage. The partition key is determined using streaming evaluation or incrementally using a DOM node tree as a portion of the document is read and stored in the buffer. The XML document is stored in the partition using the read portion of the document stored in the buffer and the remaining portion from the original source.

    摘要翻译： 提供了一种方法来有效地评估表达式以确定存储在数据库中的XML文档的分区密钥，而不将整个XML文档首先存储在临时存储器存储器中。 当文档的一部分被读取并存储在缓冲器中时，使用流式评估或递增地使用DOM节点树来确定分区密钥。 使用存储在缓冲区中的文档的读取部分和原始源的剩余部分将XML文档存储在分区中。

    In-place evolution of XML schemas
    37.
    发明申请
    In-place evolution of XML schemas 有权
    XML模式的就地演进

    公开(公告)号：US20050050105A1

    公开(公告)日：2005-03-03

    申请号：US10648749

    申请日：2003-08-25

    申请人： Sam Idicula ,  Sivasankaran Chandrasekar ,  Nipun Agarwal ,  Ravi Murthy

    发明人： Sam Idicula ,  Sivasankaran Chandrasekar ,  Nipun Agarwal ,  Ravi Murthy

    IPC分类号： G06F12/00 ,  G06F17/30

    CPC分类号： G06F17/30297 ,  G06F17/30908

    摘要： A method and system for the in-place evolution of XML schemas is disclosed. To automatically evolve an existing XML schema, a schema evolver receives both an existing XML schema and an XML document as input. The XML document indicates changes to be made to the existing XML schema. Based on the existing XML schema and the XML document, the schema evolver evolves the existing XML schema into a new XML schema that incorporates the changes indicated in the XML document. According to one aspect, the schema evolver generates one or more SQL statements based on the new XML schema. The SQL statements, when executed by a database server, cause the database server to evolve database structures that were based on the formerly existing XML schema so that the database structures conform to the new XML schema. This is accomplished “in place,” without copying the data in the database structures.

    摘要翻译： 公开了一种用于XML模式的就地演化的方法和系统。 为了自动演进现有的XML模式，模式演进器接收现有的XML模式和XML文档作为输入。 XML文档指示对现有XML模式进行的更改。 基于现有的XML架构和XML文档，架构演进者将现有的XML架构演变为新的XML架构，其中包含XML文档中指示的更改。 根据一个方面，模式演进者基于新的XML模式生成一个或多个SQL语句。 SQL语句在由数据库服务器执行时，会导致数据库服务器发展基于以前存在的XML模式的数据库结构，以便数据库结构符合新的XML模式。 这完成了“到位”，而不复制数据库结构中的数据。

    Efficient partitioning technique while managing large XML documents
    38.
    发明授权
    Efficient partitioning technique while managing large XML documents 有权
    管理大型XML文档时的高效分区技术

    公开(公告)号：US07933935B2

    公开(公告)日：2011-04-26

    申请号：US11716074

    申请日：2007-03-08

    申请人： Sam Idicula ,  Sivasankaran Chandrasekar ,  Nipun Agarwal

    发明人： Sam Idicula ,  Sivasankaran Chandrasekar ,  Nipun Agarwal

    IPC分类号： G06F17/00

    CPC分类号： G06F17/30923

    摘要： A method is provided to efficiently evaluate an expression to determine the partition key for an XML document stored in a database without the entire XML document first being stored in temporary memory storage. The partition key is determined using streaming evaluation or incrementally using a DOM node tree as a portion of the document is read and stored in the buffer. The XML document is stored in the partition using the read portion of the document stored in the buffer and the remaining portion from the original source.

    摘要翻译： 提供了一种方法来有效地评估表达式以确定存储在数据库中的XML文档的分区密钥，而不将整个XML文档首先存储在临时存储器存储器中。 当文档的一部分被读取并存储在缓冲器中时，使用流式评估或递增地使用DOM节点树来确定分区密钥。 使用存储在缓冲区中的文档的读取部分和原始源的剩余部分将XML文档存储在分区中。

    Mechanism For Deferred Rewrite Of Multiple Xpath Evaluations Over Binary XML
    39.
    发明申请
    Mechanism For Deferred Rewrite Of Multiple Xpath Evaluations Over Binary XML 有权
    延迟重写二进制XML的Xpath评估机制

    公开(公告)号：US20100030726A1

    公开(公告)日：2010-02-04

    申请号：US12181725

    申请日：2008-07-29

    申请人： Sivasankaran Chandrasekar ,  Balasubramanyam Sthanikam ,  Sam Idicula ,  Nipun Agarwal

    发明人： Sivasankaran Chandrasekar ,  Balasubramanyam Sthanikam ,  Sam Idicula ,  Nipun Agarwal

    IPC分类号： G06F17/30

    CPC分类号： G06F17/30935 ,  G06F17/30911

    摘要： A mechanism is provided for improving the performance of particular database queries operating on a view comprising binary-encoded XML. The key to improving performance is to determine whether a XML index is available to improve the computation of XPath data before deriving an optimized execution plan for a particular query. When a XML index is not available to help expedite the computation of binary-encoded XML, then deferring the computation of the XPath data until after the view merge stage avoids unnecessary computation of XPaths that are part of the view but not needed for the particular query.

    摘要翻译： 提供了一种机制，用于提高在包含二进制编码XML的视图上操作的特定数据库查询的性能。 提高性能的关键是确定在为特定查询获得优化的执行计划之前，XML索引是否可用于改进XPath数据的计算。 当XML索引不可用以帮助加速二进制编码的XML的计算时，则推迟XPath数据的计算，直到视图合并阶段之后，避免不必要的计算XPath作为视图的一部分，但不需要特定的查询 。

    TECHNIQUES FOR MORE EFFICIENT GENERATION OF XML EVENTS FROM XML DATA SOURCES
    40.
    发明申请
    TECHNIQUES FOR MORE EFFICIENT GENERATION OF XML EVENTS FROM XML DATA SOURCES 有权
    从XML数据源更有效地生成XML事件的技术

    公开(公告)号：US20090125693A1

    公开(公告)日：2009-05-14

    申请号：US11938020

    申请日：2007-11-09

    申请人： Sam Idicula ,  Ning Zhang ,  Sivasankaran Chandrasekar ,  Nipun Agarwal

    发明人： Sam Idicula ,  Ning Zhang ,  Sivasankaran Chandrasekar ,  Nipun Agarwal

    IPC分类号： G06F13/00

    CPC分类号： G06F17/272 ,  G06F17/2247 ,  G06F17/30938

    摘要： One may increase the efficiency of an XML event-generating process by reducing the number of requests to allocate or deallocate system memory. Such reduction may occur as the result of pre-allocating a memory chunk of sufficient size to contain all of the memory buffers required by a particular event-generating process. Instead of allocating new memory chunks for new memory buffers, an application may store any required buffers within the pre-allocated memory chunk. A sufficient memory size may be estimated by performing the event-generating process on a training set of XML documents. Also, an application may re-use buffers during the process or between different iterations of the process, thus avoiding the need to deallocate and reallocate memory that is essentially being used for the same purpose.

    摘要翻译： 可以通过减少分配或释放系统内存的请求数来提高XML事件生成过程的效率。 这种减少可以作为预先分配足够大小的存储器块以包含特定事件生成过程所需的所有存储器缓冲器的结果而发生。 代替为新的内存缓冲区分配新的内存块，应用程序可以在预先分配的内存块内存储任何所需的缓冲区。 可以通过对XML文档的训练集执行事件生成过程来估计足够的存储器大小。 此外，应用程序可以在进程期间或在进程的不同迭代之间重新使用缓冲区，从而避免需要释放并重新分配基本上被用于相同目的的存储器。