Development of an MPQF parser for database systems:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | German |
| Veröffentlicht: |
2008
|
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | 58 S. graph. Darst. |
Internformat
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| 245 | 1 | 0 | |a Development of an MPQF parser for database systems |c Philipp Wendler |
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Datensatz im Suchindex
| _version_ | 1804138712844468224 |
|---|---|
| adam_text | Contents
1
Introduction
6
1.1 Motivation
for a common multimedia database query language
...... 6
1.2
Target
..................................... 7
1.3
Content
.................................... 8
1.4
System requirements
............................. 8
2
The MPEG Query Format (MPQF)
9
2.1
The management part
............................ 9
2.2
The query part
................................ 10
3
Database design
12
3.1
A modular database architecture
...................... 12
3.2
Defining an algebra for the query language
................. 13
3.3
Comparison with existing database systems
................ 14
4
Comparison of automatic and manual format definition
17
5
Software design patterns
20
5.1
The visitor pattern
.............................. 20
5.1.1
The visitor pattern extended by return values
........... 22
5.2
Common usage strategies for the visitor pattern
.............. 23
5.2.1
Visiting only a small subset of the data types
........... 23
5.2.2
Visiting the super types
....................... 23
5.2.3
Recursive visiting of a tree
...................... 25
5.3
The factory pattern
.............................. 26
6
Architecture
28
6.1
The query representation API
........................ 29
6.1.1
Overview
............................... 29
6.1.2
The query graph
........................... 29
6.1.3
The operands
............................. 30
6.1.4
The implementation of the visitor pattern
............. 33
6.1.5
The type system
.......................... . 33
6.2
The parser
................................... 36
6.2.1
Syntactic XML parsing
........................ 36
6.2.2
Semantic parsing
........................... 37
6.2.3
Validation
............................... 38
6.2.4
Handling of resources
......................... 39
6.3
Examples
................................... 39
6.3.1
Example
1:
External Resources, Sorting and Grouping
...... 40
6.3.2
Example
2:
Join
........................... 43
7
Usage
45
7.1
Instantiation
.................................. 45
7.2
Parsing
..................................... 46
7.3
The provided visitors
............................. 48
7.3.1
DefaultVisitor
........................... 48
7.3.2
SuperTypeVisitor
.......................... 49
7.3.3
Recurs iveVisitor
.......................... 49
7.4
Resources
................................... 50
7.4.1
Description resources
......................... 50
7.4.2
Media resources
............................ 50
7.5
Multithreaded use
............................... 50
8
Extension mechanisms
52
8.1
Replacing the default implementation of the API
............. 52
8.1.1
The operand factory
......................... 52
8.1.2
The resource factory
......................... 54
8.1.3
The type factory
.......................... . 54
8.2
Modifying the DOM tree prior to parsing
.................. 55
9
Conclusion
56
Bibliography
57
|
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| id | DE-604.BV035382665 |
| illustrated | Illustrated |
| indexdate | 2024-07-09T21:32:33Z |
| institution | BVB |
| language | German |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-017186900 |
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| physical | 58 S. graph. Darst. |
| publishDate | 2008 |
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| spelling | Wendler, Philipp Verfasser aut Development of an MPQF parser for database systems Philipp Wendler 2008 58 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Passau, Univ., Bachelorarbeit, 2008 (DE-588)4113937-9 Hochschulschrift gnd-content Digitalisierung UB Passau application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=017186900&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Wendler, Philipp Development of an MPQF parser for database systems |
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| title | Development of an MPQF parser for database systems |
| title_auth | Development of an MPQF parser for database systems |
| title_exact_search | Development of an MPQF parser for database systems |
| title_full | Development of an MPQF parser for database systems Philipp Wendler |
| title_fullStr | Development of an MPQF parser for database systems Philipp Wendler |
| title_full_unstemmed | Development of an MPQF parser for database systems Philipp Wendler |
| title_short | Development of an MPQF parser for database systems |
| title_sort | development of an mpqf parser for database systems |
| topic_facet | Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=017186900&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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