From c22acae02df7bb121b0fc0010162a1d9bd7c02ee Mon Sep 17 00:00:00 2001
From: helmutm <helmutm@fd906abe-77d9-0310-91a1-e0d9ade77398>
Date: Sat, 24 Jul 2010 14:45:13 +0000
Subject: [PATCH] provide default operator for a field; define special
 operators 'in' and 'only'

git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@3924 fd906abe-77d9-0310-91a1-e0d9ade77398
---
 composer/report/base.py  | 29 ++++++++++++++++++-----------
 composer/report/field.py |  1 +
 2 files changed, 19 insertions(+), 11 deletions(-)

diff --git a/composer/report/base.py b/composer/report/base.py
index 447de4c..dab60e4 100644
--- a/composer/report/base.py
+++ b/composer/report/base.py
@@ -22,7 +22,7 @@ Basic classes for report management.
 $Id$
 """
 
-import operator
+import operator as standard_operators
 from zope.interface import implements
 
 from cybertools.composer.base import Component, Element, Compound
@@ -154,16 +154,9 @@ class LeafQueryCriteria(BaseQueryCriteria, Element):
         if not self.comparisonValue:
             return True
         value = self.field.getSelectValue(row)
-        if self.operator == 'in':
-            if isinstance(value, (list, tuple)):
-                for v in value:
-                    if v in self.comparisonValue:
-                        return True
-                else:
-                    return False
-            else:
-                return value in self.comparisonValue
-        op = getattr(operator, self.operator, None)
+        op = operators.get(self.operator)
+        if op is None:
+            op = getattr(standard_operators, self.operator, None)
         if op is None:
             # TODO: log warning
             return True
@@ -171,6 +164,20 @@ class LeafQueryCriteria(BaseQueryCriteria, Element):
         return op(value, self.comparisonValue)
 
 
+def checkOnly(value, compValue):
+    if not value:
+        return 'none' in compValue
+    for v in value:
+        if v not in compValue:
+            return False
+    return True
+
+def checkIn(value, compValue):
+    return value in compValue
+
+operators = {'only': checkOnly, 'in': checkIn}
+
+
 class CompoundQueryCriteria(BaseQueryCriteria, Compound):
 
     implements(ICompoundQueryCriteria)
diff --git a/composer/report/field.py b/composer/report/field.py
index 317b09c..116def3 100644
--- a/composer/report/field.py
+++ b/composer/report/field.py
@@ -45,6 +45,7 @@ class Field(Component):
     instance_name = None
     storeData = True
     renderer = 'standard'
+    operator = 'in'
 
     executionSteps = ['query', 'sort', 'output']