NAME

       Catmandu::Fix::add_to_store - add matching values to a store as a side effect

SYNOPSIS

          # Add the current record to an SQLite database.
          add_to_store(., DBI, data_source: "dbi:SQLite:path/data.sqlite")

          # Add the journal field to a MongoDB database.
          add_to_store(journal, MongoDB, database_name: catalog)

          # Add all author values to a MongoDB database.
          add_to_store(authors.*, MongoDB, database_name: catalog, bag: authors)

          # Or, a much faster option: use a named store in a catmandu.yml file
          #
          # store:
          #  mydbi:
          #    package: DBI
          #    options:
          #      data_source: "dbi:SQLite:path/data.sqlite"
          #  mymongo:
          #    package: MongoDB
          #    options:
          #      database_name: catalog
          add_to_store(., mydbi)
          add_to_store(journal, mymongo)
          add_to_store(authors.*, mymongo, bag: authors)

DESCRIPTION

   add_to_store(PATH,STORE[,store_param: store_val, ...][,bag: bag_name])
       Store a record or parts of a record in a Catmandu::Store.  The values at the PATH will be
       stored as-is in the database but should be hashes.  If the value contains an '_id' field,
       then it will used as record identifier in the database. If not, then a new '_id' field
       will be generated and added to the database and original field (for later reference).

       For instance this YAML input:

           ---
           _id: 001
           title: test
           name: foo
           ---
           _id: 002
           title: test2
           name: bar

       with the fix:

           add_to_store(., DBI, data_source: "dbi:SQLite:path/data.sqlite")

       will create a path/data.sqlite SQLite database with two records. Each records contains the
       _id from the input file and all the record fields.

       For instance this YAML input:

           ---
           title: test
           name: foo
           ---
           title: test2
           name: bar

       with the fix:

           add_to_store(., DBI, data_source: "dbi:SQLite:path/data.sqlite")

       will create a path/data.sqlite SQLite database with two records. Each records contains the
       a generated _id and all the record fields. The current input stream will be updated to
       contain the generated _id.

       Use Catmandu::Fix::lookup_in_store to lookup records in a Catmandu::Store based on an
       '_id' key.

DATABASE CONNECTIONS

       For every call to a "add_to_store" a new database connection is created. It is much more
       effient to used named stores in a "catmandu.yml" file. This file needs to contain all the
       connection parameters to the database. E.g.

           store:
              mystore:
                package: MongoDB
                options:
                   database_name: mydata

       The  "catmandu.yml" file should be available in the same directory as where the "catmandu"
       command is executed. Or, this directory can be set with the "-L" option:

           $ catmandu -L /tmp/path convert ...

SEE ALSO

       Catmandu::Fix , Catmandu::Fix::lookup_in_store