~lifeless/meliae/db

#!/usr/bin/env python

# Copyright (C) 2009 Canonical Ltd

# 

# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU Lesser General Public License as

# published by the Free Software Foundation, either version 3 of the

# License, or (at your option) any later version.

# 

# This program is distributed in the hope that it will be useful, but

# WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

# Lesser General Public License for more details.

# 

# You should have received a copy of the GNU General Public License and

# the GNU Lesser General Public License along with this program.  If

# not, see <http://www.gnu.org/licenses/>.

"""Convert a json dump to a sqlite db.

This script reads from stdin and writes to the named sqlite db.

"""

import os

import re

import sys

import time

from meliae import db, loader

def main(args):

    import optparse

    p = optparse.OptionParser('%prog OUTFILE')

    opts, args = p.parse_args(args)

    if len(args) > 1:

        sys.stderr.write('Too many parameters: %d\n' % (len(args),))

        return -1

    if len(args) < 1:

        sys.stderr.write("Must supply OUTFILE\n")

        return -1

    db_name = args[0]

    source = sys.stdin

    store = db.create_database('sqlite:' + db_name)

    def commit():

        sys.stderr.write('committing %8d                         \r' % pos)

        store.commit()

        sys.stderr.write('committed %8d                         \r' % pos)

    for pos, obj in enumerate(loader.iter_objs(source, show_prog=True)):

        store.import_obj(obj)

        # sys.stderr.write('dirty: %d alive: %d order: %d  ref_len %d seq: %d        \r' % (len(store._dirty), len(store._alive), len(store._order), len(obj.ref_list), store._sequence))

        #store.flush()

        # store.invalidate()

        if not pos & 0x1ff:

            # commit every 512 objects

            commit()

if __name__ == '__main__':

    sys.exit(main(sys.argv[1:]))