[특허]Method and apparatus for searching database component files to retrieve information from modified files

Method and apparatus for searching database component files to retrieve information from modified files 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06F-015/40 G06F-015/401
출원번호	US-0500141 (1990-03-27)
발명자 / 주소	Tirfing Soren J. (Palo Alto CA) Gramlich Wayne C. (Sunnyvale CA)
출원인 / 주소	Sun Microsystems, Inc. (Mountain View CA 02)
인용정보	피인용 횟수 : 69 인용 특허 : 0

초록 ▼

Each database component file contains information regarding the text contained in the source file which enables the user to quickly determine the frequency of occurrence of the specified text and the location of the specified text in the source file. For each textual word (referred to herein as a “symbol”) an entry in the database file is provided containing symbol information. The symbol information comprises the symbol name, symbol type and line number in the source file where the symbol is located. Line indentification information is also provided which contains the line numbers in the source file and corresponding line lengths and hash values which are computed from the contents of the lines of the text in the source file. Before a line of text identified in a query is displayed to the user indicating a result of the query, the line identification information provides the means to verify that the line of text identified in the symbol information is the same line of text contained in the source file. The hash value and line length corresponding to the line text is compared to a line length and hash value computed for the text retrieved from the source file. If the computed line length and hash value does not match the line length and hash value contained in the line identification information, the text does not match the database reference because the source file has been changed subsequent to the generation of the database. Thus, the problems that arise because the source file version does not match the version of the database component file is prevented.

대표청구항 ▼

In a computer system comprising a CPU, input/output means and memory containing a file system, said file system comprising at least one source file comprising text, means for generating a database comprising at least one database component file derived from the source file, said database providing the identification of text in the source file, said apparatus comprising: collector means for generating a database component file derived from the source file, said database component file comprising a symbol identification listing comprising symbol names and line numbers in the source file at which each of the symbols occurs, and a line identification listing comprising each line number of the source file and a corresponding hash code and line length computed according to the contents of each line of text in the source file; index file generation means for generating an index file for at least one database component file, said index file comprising a listing of each symbol and the name of the database component file in which the symbol occurs; browser means for searching database component files in response to a query specifying at least one symbol, said means comprising: means for reviewing the index file to determine which database component files the symbol occurs in; means for reviewing the database component files to determine the line numbers in the source file(s) at which the symbol occurs, said database component files reviewed being determined by the means for reviewing the index file to have at least one occurrence of the symbol; means for retrieving the line of text in the source file specified by the means for reviewing the database component files as having an occurrence of the symbol; means for generating a hash value and line length according to the contents of the line of text retrieved; means for comparing the generated hash value and line length with the hash value and line length for the line as specified in the database file; if the generated hash value and line length is equal to the hash value and line length specified in the database file, means for providing the line of text from the source file as a result of the query; if the generated hash value and line length does not equal the hash value and line length specified in the database file, means for providing a message that the line code specified in the database is not the same line of code in the text file; whereby the response to the query comprise the lines of text identified as responsive to the query or error messages generated because the source file and database component file do not match.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
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Method and apparatus for searching database component files to retrieve information from modified files 원문보기

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Method and apparatus for searching database component files to retrieve information from modified files 원문보기

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