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Am Freitag, den 12.06.2009, 11:54 +0200 schrieb Sebastian Pipping: |
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> Richard Hughes wrote: |
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> > I'm slightly worried about it being called a service. Is it going to |
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> > be a new process that just does the mapping or is this a bad choice of |
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> > words? If it is a new process then I'm not sure such a thing will |
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> > catch on. |
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> |
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> I'm not yet sure about how a mapper will keep it's data |
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> fresh as the use of it is dependent on that. |
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> Ignore my "service" for now. |
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> |
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> |
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> > I'm also worried that a package manager has to read in and parse |
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> > thousands of small files. |
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> |
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> While you mention "package manager" - with the current concept |
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> the data will not be precise enough for use with a package manager. |
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> |
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> |
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> > Why did you decide to write each project as |
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> > a single xml file? |
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> |
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> - The other 99% of the database stay valid XML if a single |
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> file is invalid |
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> |
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> - To better fit the version controlled environment |
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> |
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> |
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> > Parsing and reading 10,000 files (in multiple directories) might take |
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> > a few seconds, and would have to be copied into memory (few Mb) to |
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> > query quickly. |
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> |
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> Correct. |
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> |
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> |
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> > Which has to be invalidated if any of the files or |
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> > directories change. Why didn't you just put them in a sqlite database |
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> > that can be queried in a few ms, without dragging in an xml parser? |
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> > Also 10,000 files take up way more space (and takes longer to install |
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> > and update) than a single database file. |
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> |
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> I like your idea about sqlite. Maybe keeping the data to edit XML |
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> and query and sqlite export snapshot is something to try. |
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Why not use a XML database like dbxml? |
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Maybe you could just specify the XML files as storage and then dbxml |
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would do the rest. |
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|
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|
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> |
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> |
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> > XML might be |
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> > useful for storing the data, but not for querying. |
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> |
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> Good point. |
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|
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Using XPath and XQuery you can do queries on XML as well. |
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Cheers, |
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Tiziano |
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|
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-- |
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Tiziano Müller |
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Gentoo Linux Developer, Council Member |
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Areas of responsibility: |
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Samba, PostgreSQL, CPP, Python, sysadmin, GLEP Editor |
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E-Mail : dev-zero@g.o |
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GnuPG FP : F327 283A E769 2E36 18D5 4DE2 1B05 6A63 AE9C 1E30 |
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