def search_for_objects(searchFile, query):
# returns a list of matching metas
# TODO: Add locking to searchFile, I am not comfortable dealing with your log files..
# For my purposes, I'll do my own logging. So let this thing raise an exception if
# there is an error.
metas, error_message = read_index_file_to_get_metas(searchFile)
if metas is None:
raise Exception('Error reading searchFile %s: %s' % (searchFile, error_message))
## build a list of metas that satisfy the given query
matches = []
for meta in metas:
if cnf_match.matches_cnf(meta, query):
matches.append(meta)
return matches
def main(logDir, logFile, searchFile, scriptName, resources = None):
"""main function processing search request."""
# initialization.
name = print_header()
form = cgi.FieldStorage()
setup_logging(logDir, logFile)
## cgi.print_form(form)
## parse the form to get: query, sorting information, start_index
## to know which subset of matches/results to return,
## search_attributes for the next_page_button
query, sort_tuple, start_index, search_attributes, error_message = \
parse_form(form)
if query is None:
print '<P> ERROR while parsing form and constructing ' + \
'search query:', error_message
sys.exit(1)
## print '<HR>Query:', query
## read index file to get the list of dictionaries:
## one dictionary for each version of each object, contains its meta-data
#
# used to open search file without read.
# because Sobti is doing the read by himself below.
# I have to change this because the SearchFile will be passed
# onto the ReverseLists module for more later lookups.
# this makes it necessary to do a real SearchFile open.
#
#success,searchFileLock = ryw.open_search_file(
# 'Search:', logDir, logFile, searchFile, False, skipRead = True)
success,searchFileLock = ryw.open_search_file(
'Search:', logDir, logFile, searchFile, False, skipRead = False)
if not success:
ryw.give_bad_news('Search: failed to acquire search file lock: ' +
searchFile, logging.critical)
ryw_upload.quick_exit(1)
#else:
#
# mis-named: it's really not a searchFileLock, but searchFile itself.
#
#displayObject.set_search_file(searchFileLock)
#
# this is when Sobti used to do his own read, now replaced by mine.
#
#metas, error_message = read_index_file_to_get_metas(searchFile)
metas = searchFileLock.convert_to_sobti_list()
if metas is None:
print '<P> ERROR while reading the index file to get ' + \
'the meta-data dictionaries:', error_message
searchFileLock.done()
ryw_upload.quick_exit(1)
## build a list of metas that satisfy the given query
matches = []
for meta in metas:
if not ryw_view.should_show_object(meta, resources):
continue
if cnf_match.matches_cnf(meta, query):
matches.append(meta)
ryw.db_print2('Search:main() ' + repr(meta), 53)
num_matches = len(matches)
## sort the matches by the given sort tuple
matches, error_message = sort_matches(matches, sort_tuple)
if matches is None:
print '<P> ERROR while sorting matches:', error_message
searchFileLock.done()
ryw_upload.quick_exit(1)
#
# save all current search results in a file for
# possible inclusion in the current selection.
#
matchAllName = save_matches(matches)
## Return the start_index..(start_index + N) entries from the top
if num_matches == 0 or start_index >= num_matches:
num_items = 0
else:
start_index = max(0, start_index)
assert start_index < num_matches
end_index = start_index + NUM_OBJECTS_PER_PAGE - 1
end_index = max(0, end_index)
end_index = min(num_matches - 1, end_index)
if not (0 <= start_index <= end_index < num_matches):
print '<P> ASSERT ERROR: start_index, end_index, ' + \
'num_matches', start_index, end_index, num_matches
searchFileLock.done()
ryw_upload.quick_exit(1)
num_items = end_index - start_index + 1
## num_items is the number of items that will actually be displayed
## num_items <= num_matches
if num_items == 0:
print '<P><H3>No objects to display</H3>'
searchFileLock.done()
ryw_upload.quick_exit(1)
else:
#print '<P><H3>%d objects satisfy the search criteria, ' + \
# 'displaying %d of them</H3>' % (num_matches, num_items)
print """
<BR><B><FONT SIZE=2>%d
object(s) satisfy the search criteria.</FONT></B>""" % \
(num_matches)
print """
<BR><B><FONT SIZE=2>displaying matches %d - %d.</FONT></B><BR>""" % \
(start_index + 1, start_index + num_items)
print_next_page_button1(search_attributes, end_index + 1, scriptName,
num_matches)
shownMatches = []
success,reverseLists = ReverseLists.open_reverse_lists(
'Search:', '', '',
os.path.join(RepositoryRoot, 'ReverseLists'), True,
searchFile = searchFileLock,
repositoryRoot = RepositoryRoot)
if not (success and reverseLists):
ryw.give_bad_news('Search.main: failed to open ReverseLists.',
logging.critical)
if reverseLists:
reverseLists.done()
return False
displayObject = ryw_view.DisplayObject(
RepositoryRoot, calledByVillageSide = False,
missingFileFunc=Browse.reqDownloadFunc,
searchFile = searchFileLock,
reverseLists = reverseLists)
displayObject.begin_print()
for i in range(start_index, end_index + 1):
#display_object(matches[i])
displayObject.show_an_object_compact(matches[i])
shownMatches.append(matches[i])
displayObject.end_print()
reverseLists.done()
#
# save search results on this page in a file for
# possible inclusion in the current selection.
#
matchThisPageName = save_matches(shownMatches)
print_selection_links(matchAllName, matchThisPageName)
## Include a next-page button
print_next_page_button2(search_attributes, end_index + 1, scriptName,
num_matches)
searchFileLock.done()
ryw_view.print_footer()
