Provided by: libdata-stag-perl_0.14-2_all bug


       stag-db - persistent storage and retrieval for stag data (xml, sxpr, itext)


         stag-db -r person -k social_security_no -i ./person-idx myrecords.xml
         stag-db -i ./person-idx -q 999-9999-9999 -q 888-8888-8888


       Builds a simple file-based database for persistent storage and retrieval of nodes from a
       stag compatible document.

       Imagine you have a very large file of data, in a stag compatible format such as XML. You
       want to index all the elements of type person; each person can be uniquely identified by
       social_security_no, which is a direct subnode of person

       The first thing to do is to build an index file, which will be stored in your current

         stag-db -r person -k social_security_no -i ./person-idx myrecords.xml

       You can then use the index "person-idx" to retrieve person nodes by their social security

         stag-db -i ./person-idx -q 999-9999-9999 > some-person.xml

       You can export using different stag formats

         stag-db -i ./person-idx -q 999-9999-9999 -w sxpr > some-person.xml

       You can retrieve multiple nodes (although these need to be rooted to make a valid file)

         stag-db -i ./person-idx -q 999-9999-9999 -q 888-8888-8888 -top personset

       Or you can use a list of IDs from a file (newline delimited)

         stag-db -i ./person-idx -qf my_ss_nmbrs.txt -top personset

       -i INDEXFILE

       This file will be used as the persistent index for storage/retrieval


       This is the name of the stag node (XML element) that will be stored in the index; for
       example, with the XML below you may want to use the node name person and the unique key id


       This flag should only be used when you want to store data

       -k UNIQUE-KEY

       This node will be used as the unique/primary key for the data

       This node should be nested directly below the node that is being stored in the index - if
       it is more that one below, specify a path

       This flag should only be used when you want to store data

       -u UNIQUE-KEY

       Synonym for -k

       -p PARSER

       This can be the name of a stag supported format (xml, sxpr, itext) - XML is assumed by

       It can also be a module name - this module is used to parse the input file into a stag
       stream; see Data::Stag::BaseGenerator for details on writing your own parsers/event

       This flag should only be used when you want to store data

       -q QUERY-ID

       Fetches the relation/node with unique key value equal to query-id

       Multiple arguments can be passed by specifying -q multple times

       This flag should only be used when you want to query data

       -top NODE-NAME

       If this is specified in conjunction with -q or -qf then all the query result nodes will be
       nested inside a node with this name (ie this provides a root for the resulting document

       -qf QUERY-FILE

       This is a file of newline-seperated IDs; this is useful for querying the index in batch


       This will write a list of all primary keys in the index

       -w WRITER

       This format will be used to write the data; can be any stag format (xml, sxpr, itext) -
       default XML.

       Can also be a module that catches the incoming stag event stream and does something with
       it (for example, this could be a module you write yourself that transforms the stag events
       into HTML)



       For more complex stag to database mapping, see DBIx::DBStag and the scripts