WO2007078479B1 - Method and mechanism for loading xml documents into memory - Google Patents

Method and mechanism for loading xml documents into memory

Info

Publication number
WO2007078479B1
WO2007078479B1 PCT/US2006/045700 US2006045700W WO2007078479B1 WO 2007078479 B1 WO2007078479 B1 WO 2007078479B1 US 2006045700 W US2006045700 W US 2006045700W WO 2007078479 B1 WO2007078479 B1 WO 2007078479B1
Authority
WO
WIPO (PCT)
Prior art keywords
partition
instructions
memory
database
client
Prior art date
Application number
PCT/US2006/045700
Other languages
French (fr)
Other versions
WO2007078479A3 (en
WO2007078479A2 (en
Inventor
Sivasankaran Chandrasekar
Nipun Agarwal
Namit Jain
Ravi Murthy
Original Assignee
Oracle Int Corp
Sivasankaran Chandrasekar
Nipun Agarwal
Namit Jain
Ravi Murthy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oracle Int Corp, Sivasankaran Chandrasekar, Nipun Agarwal, Namit Jain, Ravi Murthy filed Critical Oracle Int Corp
Priority to CA2626849A priority Critical patent/CA2626849C/en
Priority to CN2006800460901A priority patent/CN101326519B/en
Priority to JP2008549474A priority patent/JP5011311B2/en
Priority to AU2006333375A priority patent/AU2006333375B2/en
Priority to EP06844632A priority patent/EP1963994A2/en
Publication of WO2007078479A2 publication Critical patent/WO2007078479A2/en
Publication of WO2007078479A3 publication Critical patent/WO2007078479A3/en
Publication of WO2007078479B1 publication Critical patent/WO2007078479B1/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/80—Information retrieval; Database structures therefor; File system structures therefor of semi-structured data, e.g. markup language structured data such as SGML, XML or HTML
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F40/00—Handling natural language data
    • G06F40/10—Text processing
    • G06F40/12—Use of codes for handling textual entities
    • G06F40/14—Tree-structured documents
    • G06F40/143—Markup, e.g. Standard Generalized Markup Language [SGML] or Document Type Definition [DTD]

Abstract

A method and apparatus for loading an XML document into memory is provided. A client loads one or more array elements into a first partition of an array that is maintained in memory. Each array element represents an XML element of an XML document. Upon determining that an amount of data maintained in the first partition exceeds a first threshold, the client subsequently loads array elements into a new partition of the array. Upon determining that an amount of data maintained in the memory of the client exceeds a second threshold, the array elements of the least recently used partition are persistently stored in a database without persistently storing the entire XML document. When the last XML element of the XML document is loaded into a partition of the array, that partition is persistently stored in the database, thereby causing the entire XML document to be stored in the database.

Claims

AMENDED CLAIMS received by the International Bureau on 11 September 2007 (11.09.07)
1. A method comprising performing a machine-executed operation involving instructions, wherein the machine-executed operation is at least one of:
A) sending said instructions over transmission media;
B) receiving said instructions over transmission media;
C) storing said instructions onto a machine-readable storage medium; and
D) executing the instructions; wherein said instructions are instructions which, when executed by one or more processors, cause: at a client, storing data representing at least one XML element in a partition maintained in memory, said at least one XML element corresponding to only part of an XML document; and upon determining that an amount of in-memory data maintained in the memory of the client exceeds a threshold, transmitting a request to a database server to store the in-memory data in the partition in a database, wherein the in-memory data is provided by the client to the database server in one or more data blocks that the database server can directly write to the database.
2. The method of Claim 1 , wherein the partition is a first partition, wherein the threshold is a first threshold, and wherein execution of said instructions further cause: upon determining that an amount of in-memory data maintained in the first partition exceeds a second threshold, (a) creating a new partition that is different than the first partition, and (b) subsequently loading array elements into the new partition.
3. The method of Claim 1 , wherein execution of said instructions further cause: determining a size of said partition based on, at least in part, (a) the available memory of the client or (b) a location within the database where said data representing at least one XML element is to be stored.
4. The method of Claim 1, wherein execution of said instructions further cause: determining a size of said partition based on, at least in part, a number of repeating XML elements within said XML document.
5. The method of Claim 1 , wherein said database is managed by said database server.
6. The method of Claim 1, wherein said in-memory data, of the partition, is stored in said database by said database server using a single batch INSERT SQL operation.
7. The method of Claim 1 , wherein the partition is a least recently used partition in a set of partitions maintained in the memory of the client.
8. The method of Claim 1, wherein execution of said instructions further cause: ceasing to maintain the partition in the memory of the client.
9. A method comprising performing a machine-executed operation involving instructions, wherein the machine-executed operation is at least one of:
A) sending said instructions over transmission media;
B) receiving said instructions over transmission media;
C) storing said instructions onto a machine-readable storage medium; and
D) executing the instructions; wherein said instructions are instructions which, when executed by one or more processors, cause: at a client, loading one or more array elements into a partition of an array maintained in memory, wherein each array element, of the one or more array elements, represents an XML element of an XML document; and upon determining that an amount of data maintained in the memory of the client exceeds a threshold, persistently storing the array elements, of the partition, in a database without persistently storing the entire XML document, wherein the array elements are provided by the client to the database server in one or more data blocks that the database server can directly write to the database.
17
PCT/US2006/045700 2005-12-22 2006-11-29 Method and mechanism for loading xml documents into memory WO2007078479A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA2626849A CA2626849C (en) 2005-12-22 2006-11-29 Method and mechanism for loading xml documents into memory
CN2006800460901A CN101326519B (en) 2005-12-22 2006-11-29 Method for loading xml documents into memory
JP2008549474A JP5011311B2 (en) 2005-12-22 2006-11-29 Method and mechanism for loading an XML document into memory
AU2006333375A AU2006333375B2 (en) 2005-12-22 2006-11-29 Method and mechanism for loading XML documents into memory
EP06844632A EP1963994A2 (en) 2005-12-22 2006-11-29 Method and mechanism for loading xml documents into memory

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/317,101 2005-12-22
US11/317,101 US7933928B2 (en) 2005-12-22 2005-12-22 Method and mechanism for loading XML documents into memory

Publications (3)

Publication Number Publication Date
WO2007078479A2 WO2007078479A2 (en) 2007-07-12
WO2007078479A3 WO2007078479A3 (en) 2007-09-13
WO2007078479B1 true WO2007078479B1 (en) 2007-10-25

Family

ID=38051584

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/045700 WO2007078479A2 (en) 2005-12-22 2006-11-29 Method and mechanism for loading xml documents into memory

Country Status (7)

Country Link
US (1) US7933928B2 (en)
EP (1) EP1963994A2 (en)
JP (1) JP5011311B2 (en)
CN (1) CN101326519B (en)
AU (1) AU2006333375B2 (en)
CA (1) CA2626849C (en)
WO (1) WO2007078479A2 (en)

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EP1963994A2 (en) 2008-09-03
CA2626849A1 (en) 2007-07-12
JP5011311B2 (en) 2012-08-29
US20070150432A1 (en) 2007-06-28
WO2007078479A3 (en) 2007-09-13
AU2006333375A1 (en) 2007-07-12
CN101326519A (en) 2008-12-17
WO2007078479A2 (en) 2007-07-12
US7933928B2 (en) 2011-04-26
JP2009521774A (en) 2009-06-04
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