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: def __init__(self,options):
89: """SAX handler to import FileMaker XML file (FMPXMLRESULT format) into the table.
90: @param options: dict of options
91: @param options.dsn: database connection string
92: @param options.table: name of the table the xml shall be imported into
93: @param options.filename: xmlfile filename
94: @param options.update_fields: (optional) list of fields to update; default is to create all fields
95: @param options.id_field: (optional) field which uniquely identifies an entry for updating purposes.
96: @param options.sync_mode: (optional) really synchronise, i.e. delete entries not in XML file
97: @param options.lc_names: (optional) lower case and clean up field names from XML
98: @param options.keep_fields: (optional) don't add fields to SQL database
99: @param options.ascii_db: (optional) assume ascii encoding in db
100: @param options.replace_table: (optional) delete and re-insert data
101: """
102:
103: # set up parser
104: self.event = None
105: self.top_dispatcher = {
106: (saxtools.START_ELEMENT, fm_ns, u'METADATA'):
107: self.handle_meta_fields,
108: (saxtools.START_ELEMENT, fm_ns, u'RESULTSET'):
109: self.handle_data_fields,
110: }
111:
112: # connect database
113: self.dbCon = psycopg.connect(options.dsn)
114: self.db = self.dbCon.cursor()
115: assert self.db, "AIIEE no db cursor for %s!!"%options.dsn
116:
117: self.table = getattr(options,"table",None)
118: self.update_fields = getattr(options,"update_fields",None)
119: self.id_field = getattr(options,"id_field",None)
120: self.sync_mode = getattr(options,"sync_mode",None)
121: self.lc_names = getattr(options,"lc_names",None)
122: self.keep_fields = getattr(options,"keep_fields",None)
123: self.ascii_db = getattr(options,"ascii_db",None)
124: self.replace_table = getattr(options,"replace_table",None)
125: self.backup_table = getattr(options,"backup_table",None)
126:
127: logging.debug("dsn: "+repr(getattr(options,"dsn",None)))
128: logging.debug("table: "+repr(self.table))
129: logging.debug("update_fields: "+repr(self.update_fields))
130: logging.debug("id_field: "+repr(self.id_field))
131: logging.debug("sync_mode: "+repr(self.sync_mode))
132: logging.debug("lc_names: "+repr(self.lc_names))
133: logging.debug("keep_fields: "+repr(self.keep_fields))
134: logging.debug("ascii_db: "+repr(self.ascii_db))
135: logging.debug("replace_table: "+repr(self.replace_table))
136:
137: self.dbIDs = {}
138: self.rowcnt = 0
139:
140: if self.id_field is not None:
141: # prepare a list of ids for sync mode
142: qstr="select %s from %s"%(self.id_field,self.table)
143: for id in SimpleSearch(self.db, qstr):
144: # value 0: not updated
145: self.dbIDs[id[0]] = 0;
146: self.rowcnt += 1
147:
148: logging.info("%d entries in DB to sync"%self.rowcnt)
149:
150: # names of fields in XML file
151: self.xml_field_names = []
152: # map XML field names to SQL field names
153: self.xml_field_map = {}
154: # and vice versa
155: self.sql_field_map = {}
156:
157: return
158:
159: def handle_meta_fields(self, end_condition):
160: dispatcher = {
161: (saxtools.START_ELEMENT, fm_ns, u'FIELD'):
162: self.handle_meta_field,
163: }
164: #First round through the generator corresponds to the
165: #start element event
166: logging.debug("START METADATA")
167: yield None
168:
169: #delegate is a generator that handles all the events "within"
170: #this element
171: delegate = None
172: while not self.event == end_condition:
173: delegate = saxtools.tenorsax.event_loop_body(
174: dispatcher, delegate, self.event)
175: yield None
176:
177: #Element closed. Wrap up
178: logging.debug("END METADATA")
179:
180: # rename table for backup
181: if self.backup_table:
182: self.orig_table = self.table
183: self.table = self.table + "_tmp"
184: # remove old temp table
185: qstr = "DROP TABLE %s"%(self.table)
186: try:
187: self.db.execute(qstr)
188: except:
189: pass
190:
191: self.dbCon.commit()
192:
193: if self.id_field:
194: # sync mode -- copy table
195: logging.info("copy table %s to %s"%(self.orig_table,self.table))
196: qstr = "CREATE TABLE %s AS (SELECT * FROM %s)"%(self.table,self.orig_table)
197:
198: else:
199: # rename table and create empty new one
200: logging.info("create empty table %s"%(self.table))
201: qstr = "CREATE TABLE %s AS (SELECT * FROM %s WHERE 1=0)"%(self.table,self.orig_table)
202:
203: self.db.execute(qstr)
204: self.dbCon.commit()
205:
206: # delete data from table for replace
207: if self.replace_table:
208: logging.info("delete data from table %s"%(self.table))
209: qstr = "TRUNCATE TABLE %s"%(self.table)
210: self.db.execute(qstr)
211: self.dbCon.commit()
212:
213: # try to match date style with XML
214: self.db.execute("set datestyle to 'german'")
215:
216: # translate id_field (SQL-name) to XML-name
217: self.xml_id = self.sql_field_map.get(self.id_field, None)
218:
219: #logging.debug("xml-fieldnames:"+repr(self.xml_field_names))
220: # get list of fields and types of db table
221: 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'"
222: self.sql_fields={}
223: for f in SimpleSearch(self.db, qstr%self.table):
224: n = f[0]
225: t = f[1]
226: #print "SQL fields: %s (%s)"%(n,t)
227: self.sql_fields[n] = TableColumn(n,t)
228:
229: # check fields to update
230: if self.update_fields is None:
231: if self.keep_fields:
232: # update existing fields
233: self.update_fields = self.sql_fields
234:
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: def importFMPXML(options):
454: """SAX handler to import FileMaker XML file (FMPXMLRESULT format) into the table.
455: @param options: dict of options
456: @param options.dsn: database connection string
457: @param options.table: name of the table the xml shall be imported into
458: @param options.filename: xmlfile filename
459: @param options.update_fields: (optional) list of fields to update; default is to create all fields
460: @param options.id_field: (optional) field which uniquely identifies an entry for updating purposes.
461: @param options.sync_mode: (optional) really synchronise, i.e. delete entries not in XML file
462: @param options.lc_names: (optional) lower case and clean up field names from XML
463: @param options.keep_fields: (optional) don't add fields to SQL database
464: @param options.ascii_db: (optional) assume ascii encoding in db
465: @param options.replace_table: (optional) delete and re-insert data
466: """
467:
468:
469: if getattr(options,'update_fields',None):
470: uf = {}
471: for f in options.update_fields.split(','):
472: (n,t) = f.split(':')
473: uf[n] = TableColumn(n,t)
474:
475: options.update_fields = uf
476:
477: if getattr(options,'id_field',None) and getattr(options,'replace_table',None):
478: logging.error("ABORT: sorry, you can't do both sync (id_field) and replace")
479: sys.exit(1)
480:
481: parser = sax.make_parser()
482: #The "consumer" is our own handler
483: consumer = xml_handler(options)
484: #Initialize Tenorsax with handler
485: handler = saxtools.tenorsax(consumer)
486: #Resulting tenorsax instance is the SAX handler
487: parser.setContentHandler(handler)
488: parser.setFeature(sax.handler.feature_namespaces, 1)
489: parser.parse(options.filename)
490:
491:
492: if __name__ == "__main__":
493: from optparse import OptionParser
494:
495: opars = OptionParser()
496: opars.add_option("-f", "--file",
497: dest="filename",
498: help="FMPXML file name", metavar="FILE")
499: opars.add_option("-c", "--dsn",
500: dest="dsn",
501: help="database connection string")
502: opars.add_option("-t", "--table",
503: dest="table",
504: help="database table name")
505: opars.add_option("--fields", default=None,
506: dest="update_fields",
507: help="list of fields to update (comma separated, sql-names)", metavar="LIST")
508: opars.add_option("--id-field", default=None,
509: dest="id_field",
510: help="name of id field for synchronisation (only appends data otherwise, sql-name)", metavar="NAME")
511: opars.add_option("--sync", "--sync-mode", default=False, action="store_true",
512: dest="sync_mode",
513: help="do full sync based on id field (remove unmatched fields from db)")
514: opars.add_option("--lc-names", default=False, action="store_true",
515: dest="lc_names",
516: help="clean and lower case field names from XML")
517: opars.add_option("--keep-fields", default=False, action="store_true",
518: dest="keep_fields",
519: help="don't add fields from XML to SQL table")
520: opars.add_option("--ascii-db", default=False, action="store_true",
521: dest="ascii_db",
522: help="the SQL database stores ASCII instead of unicode")
523: opars.add_option("--replace", default=False, action="store_true",
524: dest="replace_table",
525: help="replace table i.e. delete and re-insert data")
526: opars.add_option("--backup", default=False, action="store_true",
527: dest="backup_table",
528: help="create backup of old table (breaks indices)")
529: opars.add_option("-d", "--debug", default=False, action="store_true",
530: dest="debug",
531: help="debug mode (more output)")
532:
533: (options, args) = opars.parse_args()
534:
535: if len(sys.argv) < 2 or options.filename is None or options.dsn is None:
536: print "importFMPXML "+version_string
537: opars.print_help()
538: sys.exit(1)
539:
540: if options.debug:
541: loglevel = logging.DEBUG
542: else:
543: loglevel = logging.INFO
544:
545: logging.basicConfig(level=loglevel,
546: format='%(asctime)s %(levelname)s %(message)s',
547: datefmt='%H:%M:%S')
548:
549: importFMPXML(options)
550:
551:
552:
553:
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