1: #!/usr/local/bin/python
2: #
3:
4: import string
5: import logging
6: import sys
7: import types
8: import time
9:
10: from xml import sax
11: from amara import saxtools
12:
13: try:
14: import psycopg2 as psycopg
15: psyco = 2
16: except:
17: import psycopg
18: psyco = 1
19:
20: fm_ns = 'http://www.filemaker.com/fmpxmlresult'
21:
22: version_string = "V0.4 ROC 29.3.2007"
23:
24: def getTextFromNode(nodename):
25: """get the cdata content of a node"""
26: if nodename is None:
27: return ""
28: nodelist=nodename.childNodes
29: rc = ""
30: for node in nodelist:
31: if node.nodeType == node.TEXT_NODE:
32: rc = rc + node.data
33: return rc
34:
35: def sql_quote(v):
36: # quote dictionary
37: quote_dict = {"\'": "''", "\\": "\\\\"}
38: for dkey in quote_dict.keys():
39: if string.find(v, dkey) >= 0:
40: v=string.join(string.split(v,dkey),quote_dict[dkey])
41: return "'%s'"%v
42:
43: def SimpleSearch(curs,query, args=None, ascii=False):
44: """execute sql query and return data"""
45: #logging.debug("executing: "+query)
46: if ascii:
47: # encode all in UTF-8
48: query = query.encode("UTF-8")
49: if args is not None:
50: encargs = []
51: for a in args:
52: if a is not None:
53: a = a.encode("UTF-8")
54: encargs.append(a)
55:
56: args = encargs
57:
58: curs.execute(query, args)
59: #logging.debug("sql done")
60: try:
61: return curs.fetchall()
62: except:
63: return None
64:
65:
66: class TableColumn:
67: """simple type for storing sql column name and type"""
68:
69: def __init__(self, name, type=None):
70: #print "new tablecolumn(%s,%s)"%(name, type)
71: self.name = name
72: self.type = type
73:
74: def getName(self):
75: return self.name
76:
77: def getType(self):
78: if self.type is not None:
79: return self.type
80: else:
81: return "text"
82:
83: def __str__(self):
84: return self.name
85:
86:
87: class xml_handler:
88:
89: def __init__(self,options):
90: '''
91: SAX handler to import FileMaker XML file (FMPXMLRESULT format) into the table.
92: @param options: dict of options
93: @param options.dsn: database connection string
94: @param options.table: name of the table the xml shall be imported into
95: @param options.filename: xmlfile filename
96: @param options.update_fields: (optional) list of fields to update; default is to create all fields
97: @param options.id_field: (optional) field which uniquely identifies an entry for updating purposes.
98: @param options.sync_mode: (optional) really synchronise, i.e. delete entries not in XML file
99: @param options.lc_names: (optional) lower case and clean up field names from XML
100: @param options.keep_fields: (optional) don't add fields to SQL database
101: @param options.ascii_db: (optional) assume ascii encoding in db
102: @param options.replace_table: (optional) delete and re-insert data
103: '''
104: # set up parser
105: self.event = None
106: self.top_dispatcher = {
107: (saxtools.START_ELEMENT, fm_ns, u'METADATA'):
108: self.handle_meta_fields,
109: (saxtools.START_ELEMENT, fm_ns, u'RESULTSET'):
110: self.handle_data_fields,
111: }
112:
113: # connect database
114: self.dbCon = psycopg.connect(options.dsn)
115: self.db = self.dbCon.cursor()
116: assert self.db, "AIIEE no db cursor for %s!!"%options.dsn
117:
118: self.table = options.table
119: self.update_fields = options.update_fields
120: self.id_field = options.id_field
121: self.sync_mode = options.sync_mode
122: self.lc_names = options.lc_names
123: self.keep_fields = options.keep_fields
124: self.ascii_db = options.ascii_db
125: self.replace_table = options.replace_table
126: self.backup_table = options.backup_table
127:
128: logging.debug("dsn: "+repr(options.dsn))
129: logging.debug("table: "+repr(self.table))
130: logging.debug("update_fields: "+repr(self.update_fields))
131: logging.debug("id_field: "+repr(self.id_field))
132: logging.debug("sync_mode: "+repr(self.sync_mode))
133: logging.debug("lc_names: "+repr(self.lc_names))
134: logging.debug("keep_fields: "+repr(self.keep_fields))
135: logging.debug("ascii_db: "+repr(self.ascii_db))
136: logging.debug("replace_table: "+repr(self.replace_table))
137:
138: self.dbIDs = {}
139: self.rowcnt = 0
140:
141: if self.id_field is not None:
142: # prepare a list of ids for sync mode
143: qstr="select %s from %s"%(self.id_field,self.table)
144: for id in SimpleSearch(self.db, qstr):
145: # value 0: not updated
146: self.dbIDs[id[0]] = 0;
147: self.rowcnt += 1
148:
149: logging.info("%d entries in DB to sync"%self.rowcnt)
150:
151: # names of fields in XML file
152: self.xml_field_names = []
153: # map XML field names to SQL field names
154: self.xml_field_map = {}
155: # and vice versa
156: self.sql_field_map = {}
157:
158: return
159:
160: def handle_meta_fields(self, end_condition):
161: dispatcher = {
162: (saxtools.START_ELEMENT, fm_ns, u'FIELD'):
163: self.handle_meta_field,
164: }
165: #First round through the generator corresponds to the
166: #start element event
167: logging.debug("START METADATA")
168: yield None
169:
170: #delegate is a generator that handles all the events "within"
171: #this element
172: delegate = None
173: while not self.event == end_condition:
174: delegate = saxtools.tenorsax.event_loop_body(
175: dispatcher, delegate, self.event)
176: yield None
177:
178: #Element closed. Wrap up
179: logging.debug("END METADATA")
180:
181: # rename table for backup
182: if self.backup_table:
183: self.orig_table = self.table
184: self.table = self.table + "_tmp"
185: # remove old temp table
186: qstr = "DROP TABLE %s"%(self.table)
187: try:
188: self.db.execute(qstr)
189: except:
190: pass
191:
192: self.dbCon.commit()
193:
194: if self.id_field:
195: # sync mode -- copy table
196: logging.info("copy table %s to %s"%(self.orig_table,self.table))
197: qstr = "CREATE TABLE %s AS (SELECT * FROM %s)"%(self.table,self.orig_table)
198:
199: else:
200: # rename table and create empty new one
201: logging.info("create empty table %s"%(self.table))
202: qstr = "CREATE TABLE %s AS (SELECT * FROM %s WHERE 1=0)"%(self.table,self.orig_table)
203:
204: self.db.execute(qstr)
205: self.dbCon.commit()
206:
207: # delete data from table for replace
208: if self.replace_table:
209: logging.info("delete data from table %s"%(self.table))
210: qstr = "TRUNCATE TABLE %s"%(self.table)
211: self.db.execute(qstr)
212: self.dbCon.commit()
213:
214: # try to match date style with XML
215: self.db.execute("set datestyle to 'german'")
216:
217: # translate id_field (SQL-name) to XML-name
218: self.xml_id = self.sql_field_map.get(self.id_field, None)
219:
220: #logging.debug("xml-fieldnames:"+repr(self.xml_field_names))
221: # get list of fields and types of db table
222: qstr="select attname, format_type(pg_attribute.atttypid, pg_attribute.atttypmod) from pg_attribute, pg_class where attrelid = pg_class.oid and pg_attribute.attnum > 0 and relname = '%s'"
223: self.sql_fields={}
224: for f in SimpleSearch(self.db, qstr%self.table):
225: n = f[0]
226: t = f[1]
227: #print "SQL fields: %s (%s)"%(n,t)
228: self.sql_fields[n] = TableColumn(n,t)
229:
230: # check fields to update
231: if self.update_fields is None:
232: if self.keep_fields:
233: # update existing fields
234: self.update_fields = self.sql_fields
235:
236: else:
237: # update all fields
238: if self.lc_names:
239: # create dict with sql names
240: self.update_fields = {}
241: for f in self.xml_field_map.values():
242: self.update_fields[f.getName()] = f
243:
244: else:
245: self.update_fields = self.xml_field_map
246:
247: # and translate to list of xml fields
248: if self.lc_names:
249: self.xml_update_list = [self.sql_field_map[x] for x in self.update_fields]
250: else:
251: self.xml_update_list = self.update_fields.keys()
252:
253: if not self.keep_fields:
254: # adjust db table to fields in XML and update_fields
255: for f in self.xml_field_map.values():
256: logging.debug("sync-fieldname: %s"%f.getName())
257: sf = self.sql_fields.get(f.getName(), None)
258: uf = self.update_fields.get(f.getName(), None)
259: if sf is not None:
260: # name in db -- check type
261: if f.getType() != sf.getType():
262: logging.debug("field %s has different type (%s vs %s)"%(f,f.getType(),sf.getType()))
263: elif uf is not None:
264: # add field to table
265: qstr="alter table %s add %s %s"%(self.table,uf.getName(),uf.getType())
266: logging.info("db add field:"+qstr)
267:
268: if self.ascii_db and type(qstr)==types.UnicodeType:
269: qstr=qstr.encode('utf-8')
270:
271: self.db.execute(qstr)
272: self.dbCon.commit()
273:
274: # prepare sql statements for update
275: setStr=string.join(["%s = %%s"%self.xml_field_map[f] for f in self.xml_update_list], ', ')
276: self.updQuery="UPDATE %s SET %s WHERE %s = %%s"%(self.table,setStr,self.id_field)
277: # and insert
278: fields=string.join([self.xml_field_map[x].getName() for x in self.xml_update_list], ',')
279: values=string.join(['%s' for f in self.xml_update_list], ',')
280: self.addQuery="INSERT INTO %s (%s) VALUES (%s)"%(self.table,fields,values)
281: logging.debug("update-query: "+self.updQuery)
282: logging.debug("add-query: "+self.addQuery)
283: return
284:
285: def handle_meta_field(self, end_condition):
286: name = self.params.get((None, u'NAME'))
287: yield None
288: #Element closed. Wrap up
289: if self.lc_names:
290: # clean name
291: sqlname = name.replace(" ","_").lower()
292: else:
293: sqlname = name
294: self.xml_field_names.append(name)
295: # map to sql name and default text type
296: self.xml_field_map[name] = TableColumn(sqlname, 'text')
297: self.sql_field_map[sqlname] = name
298: logging.debug("FIELD name: "+name)
299: return
300:
301: def handle_data_fields(self, end_condition):
302: dispatcher = {
303: (saxtools.START_ELEMENT, fm_ns, u'ROW'):
304: self.handle_row,
305: }
306: #First round through the generator corresponds to the
307: #start element event
308: logging.debug("START RESULTSET")
309: self.rowcnt = 0
310: yield None
311:
312: #delegate is a generator that handles all the events "within"
313: #this element
314: delegate = None
315: while not self.event == end_condition:
316: delegate = saxtools.tenorsax.event_loop_body(
317: dispatcher, delegate, self.event)
318: yield None
319:
320: #Element closed. Wrap up
321: logging.debug("END RESULTSET")
322: self.dbCon.commit()
323:
324: if self.sync_mode:
325: # delete unmatched entries in db
326: logging.info("deleting unmatched rows from db")
327: delQuery = "DELETE FROM %s WHERE %s = %%s"%(self.table,self.id_field)
328: for id in self.dbIDs.keys():
329: # find all not-updated fields
330: if self.dbIDs[id] == 0:
331: logging.info(" delete:"+id)
332: SimpleSearch(self.db, delQuery, [id], ascii=self.ascii_db)
333: sys.exit(1)
334:
335: elif self.dbIDs[id] > 1:
336: logging.info(" sync: ID %s used more than once?"%id)
337:
338: self.dbCon.commit()
339:
340: # reinstate backup tables
341: if self.backup_table:
342: backup_name = "%s_%s"%(self.orig_table,time.strftime('%Y_%m_%d_%H_%M_%S'))
343: logging.info("rename backup table %s to %s"%(self.orig_table,backup_name))
344: qstr = "ALTER TABLE %s RENAME TO %s"%(self.orig_table,backup_name)
345: self.db.execute(qstr)
346: logging.info("rename working table %s to %s"%(self.table,self.orig_table))
347: qstr = "ALTER TABLE %s RENAME TO %s"%(self.table,self.orig_table)
348: self.db.execute(qstr)
349: self.dbCon.commit()
350:
351: return
352:
353: def handle_row(self, end_condition):
354: dispatcher = {
355: (saxtools.START_ELEMENT, fm_ns, u'COL'):
356: self.handle_col,
357: }
358: logging.debug("START ROW")
359: self.xml_data = {}
360: self.colIdx = 0
361: yield None
362:
363: #delegate is a generator that handles all the events "within"
364: #this element
365: delegate = None
366: while not self.event == end_condition:
367: delegate = saxtools.tenorsax.event_loop_body(
368: dispatcher, delegate, self.event)
369: yield None
370:
371: #Element closed. Wrap up
372: logging.debug("END ROW")
373: self.rowcnt += 1
374: # process collected row data
375: update=False
376: id_val=''
377: # synchronize by id_field
378: if self.id_field:
379: id_val = self.xml_data[self.xml_id]
380: if id_val in self.dbIDs:
381: self.dbIDs[id_val] += 1
382: update=True
383:
384: # collect all values
385: args = []
386: for fn in self.xml_update_list:
387: f = self.xml_field_map[fn]
388: val = self.xml_data[fn]
389: type = self.sql_fields[f.getName()].getType()
390: if type == "date" and len(val) == 0:
391: # empty date field
392: val = None
393:
394: elif type == "integer" and len(val) == 0:
395: # empty int field
396: val = None
397:
398: args.append(val)
399:
400: if update:
401: # update existing row (by id_field)
402: # last argument is ID match
403: args.append(id_val)
404: logging.debug("update: %s = %s"%(id_val, args))
405: SimpleSearch(self.db, self.updQuery, args, ascii=self.ascii_db)
406:
407: else:
408: # create new row
409: logging.debug("insert: %s"%args)
410: SimpleSearch(self.db, self.addQuery, args, ascii=self.ascii_db)
411:
412: #logging.info(" row:"+"%d (%s)"%(self.rowcnt,id_val))
413: if (self.rowcnt % 10) == 0:
414: logging.info(" row:"+"%d (%s)"%(self.rowcnt,id_val))
415: self.dbCon.commit()
416:
417: return
418:
419: def handle_col(self, end_condition):
420: dispatcher = {
421: (saxtools.START_ELEMENT, fm_ns, u'DATA'):
422: self.handle_data_tag,
423: }
424: #print "START COL"
425: yield None
426: #delegate is a generator that handles all the events "within"
427: #this element
428: delegate = None
429: while not self.event == end_condition:
430: delegate = saxtools.tenorsax.event_loop_body(
431: dispatcher, delegate, self.event)
432: yield None
433: #Element closed. Wrap up
434: #print "END COL"
435: self.colIdx += 1
436: return
437:
438: def handle_data_tag(self, end_condition):
439: #print "START DATA"
440: content = u''
441: yield None
442: # gather child elements
443: while not self.event == end_condition:
444: if self.event[0] == saxtools.CHARACTER_DATA:
445: content += self.params
446: yield None
447: #Element closed. Wrap up
448: fn = self.xml_field_names[self.colIdx]
449: self.xml_data[fn] = content
450: return
451:
452:
453:
454:
455:
456: ##
457: ## public static int main()
458: ##
459:
460: from optparse import OptionParser
461:
462: opars = OptionParser()
463: opars.add_option("-f", "--file",
464: dest="filename",
465: help="FMPXML file name", metavar="FILE")
466: opars.add_option("-c", "--dsn",
467: dest="dsn",
468: help="database connection string")
469: opars.add_option("-t", "--table",
470: dest="table",
471: help="database table name")
472: opars.add_option("--fields", default=None,
473: dest="update_fields",
474: help="list of fields to update (comma separated, sql-names)", metavar="LIST")
475: opars.add_option("--id-field", default=None,
476: dest="id_field",
477: help="name of id field for synchronisation (only appends data otherwise, sql-name)", metavar="NAME")
478: opars.add_option("--sync", "--sync-mode", default=False, action="store_true",
479: dest="sync_mode",
480: help="do full sync based on id field (remove unmatched fields from db)")
481: opars.add_option("--lc-names", default=False, action="store_true",
482: dest="lc_names",
483: help="clean and lower case field names from XML")
484: opars.add_option("--keep-fields", default=False, action="store_true",
485: dest="keep_fields",
486: help="don't add fields from XML to SQL table")
487: opars.add_option("--ascii-db", default=False, action="store_true",
488: dest="ascii_db",
489: help="the SQL database stores ASCII instead of unicode")
490: opars.add_option("--replace", default=False, action="store_true",
491: dest="replace_table",
492: help="replace table i.e. delete and re-insert data")
493: opars.add_option("--backup", default=False, action="store_true",
494: dest="backup_table",
495: help="create backup of old table (breaks indices)")
496: opars.add_option("-d", "--debug", default=False, action="store_true",
497: dest="debug",
498: help="debug mode (more output)")
499:
500: (options, args) = opars.parse_args()
501:
502: if len(sys.argv) < 2 or options.filename is None or options.dsn is None:
503: print "importFMPXML "+version_string
504: opars.print_help()
505: sys.exit(1)
506:
507: if options.debug:
508: loglevel = logging.DEBUG
509: else:
510: loglevel = logging.INFO
511:
512: logging.basicConfig(level=loglevel,
513: format='%(asctime)s %(levelname)s %(message)s',
514: datefmt='%H:%M:%S')
515:
516: update_fields = None
517:
518: if options.update_fields:
519: uf = {}
520: for f in options.update_fields.split(','):
521: (n,t) = f.split(':')
522: uf[n] = TableColumn(n,t)
523:
524: options.update_fields = uf
525:
526: if options.id_field and options.replace_table:
527: logging.error("ABORT: sorry, you can't do both sync (id_field) and replace")
528: sys.exit(1)
529:
530: parser = sax.make_parser()
531: #The "consumer" is our own handler
532: consumer = xml_handler(options)
533: #Initialize Tenorsax with handler
534: handler = saxtools.tenorsax(consumer)
535: #Resulting tenorsax instance is the SAX handler
536: parser.setContentHandler(handler)
537: parser.setFeature(sax.handler.feature_namespaces, 1)
538: parser.parse(options.filename)
539:
540:
541: print "DONE!"
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