1STAG-AUTOSCHEMA(1)    User Contributed Perl Documentation   STAG-AUTOSCHEMA(1)
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NAME

6       stag-autoschema.pl - writes the implicit stag-schema for a stag file
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SYNOPSIS

9         stag-autoschema.pl -w sxpr sample-data.xml
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11         stag-autoschema.pl -dtd sample-data.xml
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DESCRIPTION

14       Takes a stag compatible file (xml, sxpr, itext), or a file in any for‐
15       mat plus a parser, and writes out the implicit underlying stag-schema
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17       stag-schema should look relatively self-explanatory.
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19       Here is an example stag-schema, shown in sxpr syntax:
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21         (db
22          (person*
23           (name "s"
24           (address+
25            (address_type "s")
26            (street "s")
27            (street2? "s")
28            (city "s")
29            (zip? "s")))))
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31       The database db contains zero or more persons, each person has a manda‐
32       tory name and at least one address.
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34       The cardinality mnemonics are as follows:
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36       +   1 or more
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38       ?   0 or one
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40       *   0 or more
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42       The default cardinality is 1
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ARGUMENTS

45       -p⎪parser FORMAT
46           FORMAT is one of xml, sxpr or itext, or the name of a perl module
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48           xml assumed as default
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50       -dtd
51           exports schema as DTD
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53       -w⎪writer FORMAT
54           FORMAT is one of xml, sxpr or itext, or the name of a perl module,
55           OR DTD
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57           The default is sxpr
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59           note that stag schemas exported as xml will be invalid xml, due to
60           the use of symbols *, +, ? in the node names
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LIMITATIONS

63       not event based - memory usage becomes exhorbitant on large files; pre‐
64       pare a small sample beforehand
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68perl v5.8.8                       2004-02-02                STAG-AUTOSCHEMA(1)