4196: Error by using special filter in person view

svn: r15855

src/Filters/Rules/Person/_DeepRelationshipPathBetween.py

@@ -47,7 +47,7 @@ def filter_database(db, progress, filter_name):
 
     filt = MatchesFilter([filter_name])
     progress.set_header('Preparing sub-filter')
-    filt.prepare(db)
+    filt.requestprepare(db)
 
     progress.set_header('Retrieving all sub-filter matches')
     matches = []
@@ -57,7 +57,7 @@ def filter_database(db, progress, filter_name):
             matches.append(handle)
         progress.step()
 
-    filt.reset()
+    filt.requestreset()
     
     return matches
 

src/Filters/Rules/Person/_HasCommonAncestorWithFilterMatch.py

@@ -41,7 +41,7 @@ from _MatchesFilter import MatchesFilter
 # HasCommonAncestorWithFilterMatch
 #
 #-------------------------------------------------------------------------
-class HasCommonAncestorWithFilterMatch(HasCommonAncestorWith,MatchesFilter):
+class HasCommonAncestorWithFilterMatch(HasCommonAncestorWith):
     """Rule that checks for a person that has a common ancestor with
     someone matching a filter"""
 
@@ -64,7 +64,7 @@ class HasCommonAncestorWithFilterMatch(HasCommonAncestorWith,MatchesFilter):
         self.ancestor_cache = {}
         self.with_people = []
         filt = MatchesFilter(self.list)
-        filt.prepare(db)
+        filt.requestprepare(db)
         for handle in db.iter_person_handles():
             person = db.get_person_from_handle(handle)
             if person and filt.apply(db, person):
@@ -73,4 +73,4 @@ class HasCommonAncestorWithFilterMatch(HasCommonAncestorWith,MatchesFilter):
                 #fill list of ancestor of person if not present yet
                 if handle not in self.ancestor_cache:
                     self.add_ancs(db, person)
-        filt.reset()
+        filt.requestreset()

src/Filters/Rules/Person/_IsAncestorOfFilterMatch.py

@@ -40,7 +40,7 @@ from _MatchesFilter import MatchesFilter
 # IsAncestorOfFilterMatch
 #
 #-------------------------------------------------------------------------
-class IsAncestorOfFilterMatch(IsAncestorOf,MatchesFilter):
+class IsAncestorOfFilterMatch(IsAncestorOf):
     """Rule that checks for a person that is an ancestor of
     someone matched by a filter"""
 
@@ -66,11 +66,11 @@ class IsAncestorOfFilterMatch(IsAncestorOf,MatchesFilter):
             first = 1
             
         filt = MatchesFilter(self.list[0:1])
-        filt.prepare(db)
+        filt.requestprepare(db)
         for person in db.iter_people():
             if filt.apply(db, person):
                 self.init_ancestor_list(db, person, first)
-        filt.reset()
+        filt.requestreset()
 
     def reset(self):
         self.map.clear()

src/Filters/Rules/Person/_IsChildOfFilterMatch.py

@@ -32,6 +32,7 @@ from gen.ggettext import gettext as _
 # GRAMPS modules
 #
 #-------------------------------------------------------------------------
+from Filters.Rules import Rule
 from _MatchesFilter import MatchesFilter
 
 #-------------------------------------------------------------------------
@@ -39,7 +40,7 @@ from _MatchesFilter import MatchesFilter
 # IsChildOfFilterMatch
 #
 #-------------------------------------------------------------------------
-class IsChildOfFilterMatch(MatchesFilter):
+class IsChildOfFilterMatch(Rule):
     """Rule that checks for a person that is a child
     of someone matched by a filter"""
 
@@ -52,11 +53,11 @@ class IsChildOfFilterMatch(MatchesFilter):
         self.db = db
         self.map = set()
         filt = MatchesFilter(self.list)
-        filt.prepare(db)
+        filt.requestprepare(db)
         for person in db.iter_people():
             if filt.apply(db, person):
                 self.init_list(person)
-        filt.reset()
+        filt.requestreset()
 
     def reset(self):
         self.map.clear()

src/Filters/Rules/Person/_IsDescendantOfFilterMatch.py

@@ -40,7 +40,7 @@ from _MatchesFilter import MatchesFilter
 # IsDescendantOfFilterMatch
 #
 #-------------------------------------------------------------------------
-class IsDescendantOfFilterMatch(IsDescendantOf,MatchesFilter):
+class IsDescendantOfFilterMatch(IsDescendantOf):
     """Rule that checks for a person that is a descendant
     of someone matched by a filter"""
 
@@ -66,11 +66,11 @@ class IsDescendantOfFilterMatch(IsDescendantOf,MatchesFilter):
             first = 1
 
         filt = MatchesFilter(self.list[0:1])
-        filt.prepare(db)
+        filt.requestprepare(db)
         for person in db.iter_people():
             if filt.apply(db, person):
                 self.init_list(person, first)
-        filt.reset()
+        filt.requestreset()
 
     def reset(self):
         self.map.clear()

src/Filters/Rules/Person/_IsParentOfFilterMatch.py

@@ -32,6 +32,7 @@ from gen.ggettext import gettext as _
 # GRAMPS modules
 #
 #-------------------------------------------------------------------------
+from Filters.Rules import Rule
 from _MatchesFilter import MatchesFilter
 
 #-------------------------------------------------------------------------
@@ -39,7 +40,7 @@ from _MatchesFilter import MatchesFilter
 # IsParentOfFilterMatch
 #
 #-------------------------------------------------------------------------
-class IsParentOfFilterMatch(MatchesFilter):
+class IsParentOfFilterMatch(Rule):
     """Rule that checks for a person that is a parent
     of someone matched by a filter"""
 
@@ -52,11 +53,11 @@ class IsParentOfFilterMatch(MatchesFilter):
         self.db = db
         self.map = set()
         filt = MatchesFilter(self.list)
-        filt.prepare(db)
+        filt.requestprepare(db)
         for person in db.iter_people():
             if filt.apply(db, person):
                 self.init_list(person)
-        filt.reset()
+        filt.requestreset()
 
     def reset(self):
         self.map.clear()

src/Filters/Rules/Person/_IsSiblingOfFilterMatch.py

@@ -32,6 +32,7 @@ from gen.ggettext import gettext as _
 # GRAMPS modules
 #
 #-------------------------------------------------------------------------
+from Filters.Rules import Rule
 from _MatchesFilter import MatchesFilter
 
 #-------------------------------------------------------------------------
@@ -39,7 +40,7 @@ from _MatchesFilter import MatchesFilter
 # IsSiblingOfFilterMatch
 #
 #-------------------------------------------------------------------------
-class IsSiblingOfFilterMatch(MatchesFilter):
+class IsSiblingOfFilterMatch(Rule):
     """Rule that checks for siblings of someone matched by a filter"""
 
     labels      = [ _('Filter name:') ]
@@ -51,11 +52,11 @@ class IsSiblingOfFilterMatch(MatchesFilter):
         self.db = db
         self.map = set()
         filt = MatchesFilter(self.list)
-        filt.prepare(db)
+        filt.requestprepare(db)
         for person in db.iter_people():
             if filt.apply (db, person):
                 self.init_list (person)
-        filt.reset()
+        filt.requestreset()
 
     def reset(self):
         self.map.clear()

src/Filters/Rules/Person/_IsSpouseOfFilterMatch.py

@@ -32,6 +32,7 @@ from gen.ggettext import gettext as _
 # GRAMPS modules
 #
 #-------------------------------------------------------------------------
+from Filters.Rules import Rule
 from _MatchesFilter import MatchesFilter
 
 #-------------------------------------------------------------------------
@@ -39,7 +40,7 @@ from _MatchesFilter import MatchesFilter
 # IsSpouseOfFilterMatch
 #
 #-------------------------------------------------------------------------
-class IsSpouseOfFilterMatch(MatchesFilter):
+class IsSpouseOfFilterMatch(Rule):
     """Rule that checks for a person married to someone matching
     a filter"""
 
@@ -50,7 +51,7 @@ class IsSpouseOfFilterMatch(MatchesFilter):
 
     def prepare(self,db):
         self.filt = MatchesFilter (self.list)
-        self.filt.prepare(db)
+        self.filt.requestprepare(db)
         
     def apply(self,db,person):
         for family_handle in person.get_family_handle_list ():
@@ -65,3 +66,6 @@ class IsSpouseOfFilterMatch(MatchesFilter):
                     if self.filt.apply (db, db.get_person_from_handle( spouse_id)):
                         return True
         return False
+
+    def reset(self):
+        self.filt.requestreset()

src/Filters/Rules/_MatchesFilterBase.py

@@ -60,7 +60,8 @@ class MatchesFilterBase(Rule):
             if self.list[0] in filters:
                 filt = filters[self.list[0]]
                 for rule in filt.flist:
-                    rule.prepare(db)
+                    rule.requestprepare(db)
+                    
 
     def reset(self):
         if Filters.CustomFilters:
@@ -68,7 +69,7 @@ class MatchesFilterBase(Rule):
             if self.list[0] in filters:
                 filt = filters[self.list[0]]
                 for rule in filt.flist:
-                    rule.reset()
+                    rule.requestreset()
 
     def apply(self, db, obj):
         if Filters.CustomFilters:

src/Filters/Rules/_Rule.py

@@ -43,14 +43,47 @@ class Rule(object):
 
     def __init__(self, arg):
         self.set_list(arg)
+        self.nrprepare = 0
 
     def is_empty(self):
         return False
     
+    def requestprepare(self, db):
+        """
+        Request that the prepare method of the rule is executed if needed
+        
+        Special: Custom Filters have fixed values, so only one instance needs to
+        exists during a search. It is stored in a FilterStore, and initialized
+        once.
+        As filters are can be grouped in a group
+        filter, we request a prepare. Only the first time prepare will be
+        called
+        """
+        if self.nrprepare == 0:
+            self.prepare(db)
+        self.nrprepare += 1
+
     def prepare(self, db):
+        """prepare so the rule can be executed efficiently"""
         pass
 
+    def requestreset(self):
+        """
+        Request that the reset method of the rule is executed if possible
+        
+        Special: Custom Filters have fixed values, so only one instance needs to
+        exists during a search. It is stored in a FilterStore, and initialized
+        once.
+        As filters are can be grouped in a group
+        filter, we request a reset. Only the last time reset will be
+        called
+        """
+        self.nrprepare -= 1
+        if self.nrprepare == 0:
+            self.reset()
+
     def reset(self):
+        """remove no longer needed memory"""
         pass
  
     def set_list(self, arg):

src/Filters/_GenericFilter.py

@@ -227,10 +227,10 @@ class GenericFilter(object):
         """
         m = self.get_check_func()
         for rule in self.flist:
-            rule.prepare(db)
+            rule.requestprepare(db)
         res = m(db, id_list, progress, tupleind)
         for rule in self.flist:
-            rule.reset()
+            rule.requestreset()
         return res
 
 class GenericFamilyFilter(GenericFilter):

src/Filters/_ParamFilter.py

@@ -30,6 +30,7 @@ Package providing filtering framework for GRAMPS.
 #
 #-------------------------------------------------------------------------
 from Filters._GenericFilter import GenericFilter
+from Errors import FilterError
 
 #-------------------------------------------------------------------------
 #
@@ -58,8 +59,11 @@ class ParamFilter(GenericFilter):
                 new_list[ix] = self.param_list[ix]
             rule.set_list(new_list)
         for rule in self.flist:
-            rule.prepare(db)
+            if rule.nrprepare > 0:
+                raise FilterError, 'Custom filters can not twice be used' \
+                                   ' in a parameter filter'
+            rule.requestprepare(db)
         result = GenericFilter.apply(self, db, id_list)
         for rule in self.flist:
-            rule.reset()
+            rule.requestreset()
         return result