Created
October 24, 2012 11:36
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Generate Archives Hub URIs for records matching a given subject
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| """Generate Archives Hub URIs for records matching a given subject. | |
| Usage: %prog [options] subject | |
| """ | |
| import sys | |
| import os | |
| from contextlib import contextmanager | |
| from optparse import OptionParser | |
| cheshirePath = os.environ.get('C3HOME', os.path.expanduser('~/cheshire3')) | |
| # Hack sys.path to look for over-ridden cheshire3 modules | |
| sys.path.insert(1, os.path.join(cheshirePath, 'cheshire3', 'code')) | |
| # Cheshire3 imports | |
| from cheshire3.baseObjects import Session | |
| from cheshire3.server import SimpleServer | |
| # Build environment... | |
| session = Session() | |
| serv = SimpleServer(session, | |
| os.path.join(cheshirePath, | |
| 'cheshire3', | |
| 'configs', | |
| 'serverConfig.xml') | |
| ) | |
| class MyOptionParser(OptionParser): | |
| """Custom option parser for outputting list of record URIs.""" | |
| def __init__(self, **kwargs): | |
| OptionParser.__init__(self, **kwargs) | |
| # Options | |
| self.add_option( | |
| "-o", | |
| "--output", | |
| dest="outfile", | |
| default=None, | |
| help=" ".join(["Write output to OUTFILE.", | |
| "If omitted output will be printed to STDOUT."]), | |
| metavar="OUTFILE" | |
| ) | |
| self.add_option( | |
| "-c", | |
| "--components", | |
| dest="components", | |
| action="store_true", | |
| default=False, | |
| help="Include component URIs" | |
| ) | |
| @contextmanager | |
| def get_outputStream(options): | |
| """Context manager for appropriate output stream based on given options.""" | |
| if options.outfile is not None: | |
| f = open(os.path.abspath(options.outfile), 'w') | |
| try: | |
| yield f | |
| finally: | |
| f.close() | |
| else: | |
| yield sys.stdout | |
| def printSubjectURIs(options, args): | |
| if options.components: | |
| qString = 'dc.subject exact "{0}"'.format(' '.join(args[1:])) | |
| else: | |
| qString = 'dc.subject exact "{0}" and ead.istoplevel=1'.format(' '.join(args[1:])) | |
| try: | |
| q = qf.get_query(session, qString) | |
| except: | |
| session.logger.log_error(session, "Invalid CQL: {0}".format(qString)) | |
| return 1 | |
| rs = db.search(session, q) | |
| unitidWf = db.get_object(session, 'unitidIdentifierWorkflow') | |
| with get_outputStream(options) as outStream: | |
| for rsi in rs: | |
| rec = rsi.fetch_record(session, schema='ead') | |
| new_id = unitidWf.process(session, rec) | |
| uri = "{0}/{1}".format(baseDataUri, new_id) | |
| outStream.write(uri) | |
| return 0 | |
| db = serv.get_object(session, 'db_hub') | |
| session.database = db.id | |
| session.logger = db.get_path(session, 'defaultLogger') | |
| qf = db.get_object(session, 'defaultQueryFactory') | |
| hubBaseUrl = 'http://archiveshub.ac.uk' | |
| apacheDataUrl = '/data' | |
| baseDataUri = '{0}{1}'.format(hubBaseUrl, apacheDataUrl) | |
| option_parser = MyOptionParser() | |
| if __name__ == '__main__': | |
| (options, args) = option_parser.parse_args(sys.argv) | |
| sys.exit(printSubjectURIs(options, args)) |
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