work in progress: handling of result sets

git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@1752 fd906abe-77d9-0310-91a1-e0d9ade77398

reporter/README.txt

@@ -35,6 +35,20 @@ then provide a listing of persons...
   >>> len(list(rset.rows))
   3
 
+As we have not yet provided a schema for the result set the rows are
+empty.
+
+  >>> r1 = rset.rows.next()
+  >>> list(r1.cells)
+  []
+
+  >>> from cybertools.composer.schema.schema import Schema
+  >>> from cybertools.composer.schema.field import Field
+  >>> rset.schema = Schema(Field(u'firstName'), Field(u'lastName'), Field(u'birthDate'))
+  >>> r1 = rset.rows.next()
+  >>> [c.text for c in r1.cells]
+  ['Smith', 'John', '1956-08-01']
+
 For the browser presentation we can also use a browser view providing
 the result set with extended attributes:
 

reporter/browser/macros.pt

@@ -4,7 +4,7 @@
     <h2 tal:content="item/title">Something</h2><br />
     <table>
       <tr tal:repeat="cell item/cells">
-        <td><span tal:content="cell/title"
+        <td><span tal:content="cell/field/title"
                   i18n:translate="" />Fieldname:</td>
         <td tal:content="cell/text">Value</td>
       </tr>
@@ -27,7 +27,7 @@
                 <td valign="top"
                     repeat="cell row/cells">
                   <a href="#"
-                     tal:omit-tag="not: cell/url"
+                     tal:omit-tag="not:cell/url"
                      tal:attributes="href cell/url;
                                      title cell/urlTitle">
                     <span tal:replace="cell/text">Value</span>

reporter/interfaces.py

@@ -46,7 +46,7 @@ class IRow(Interface):
 
     cells = Attribute(u'Mapping of data elements addressed by field names.')
 
-    value = Attribute(u'The object that is the base of this row.')
+    context = Attribute(u'The object that is the base of this row.')
 
     resultSet = Attribute('The result set this row belongs to.')
     schema = Attribute(u'The schema of the result set this row belongs to')
@@ -56,6 +56,8 @@ class ICell(Interface):
     """ A single cell of a listing or table.
     """
 
+    field = Attribute(u'The schema field the cell belongs to.')
+
     text = Attribute(u'Text to be displayed.')
     value = Attribute(u'The real object, often identical to text.')
     token = Attribute(u'May be used to identify a cell within '
@@ -64,12 +66,12 @@ class ICell(Interface):
     # string:${view/url}/.target${row/uniqueId}
     urlTitle = Attribute(u'Optional title for this link.')
 
-    title = Attribute('The title of the schema field this cell belongs to.')
     row = Attribute('The row this cell belongs to.')
 
     def sortKey():
         """ Returns a value (typically a string or a sequence) that will
-            be used for comparing cells in order to sort rows.
+            be used for comparing cells in order to sort rows on the
+            corresponding column.
         """
 
 

reporter/resultset.py

@@ -27,6 +27,8 @@ $Id$
 
 from zope.component import adapts
 from zope.interface import implements
+
+from cybertools.composer.schema.schema import Schema
 from cybertools.reporter.interfaces import IDataSource
 from cybertools.reporter.interfaces import IResultSet, IRow, ICell
 
@@ -42,14 +44,25 @@ class Cell(object):
 
     @property
     def text(self):
-        return value
+        return str(self.value)
 
     @property
     def token(self):
-        return value
+        return self.value
 
     def sortKey(self):
-        return value
+        return self.value
+
+    @property
+    def url(self):
+        view = self.row.resultSet.view
+        if view is None:
+            return ''
+        return IAbsoluteURL(self.row, view.request, name=field.__name__)
+
+    @property
+    def urlTitle(self):
+        return ''
 
 
 class Row(object):
@@ -57,14 +70,17 @@ class Row(object):
     implements(IRow)
 
     def __init__(self, context, resultSet):
-        self.context = context  # a single object (in this case)
+        self.context = context
         self.resultSet = resultSet
 
+    @property
+    def schema(self):
+        return self.resultSet.schema
+
     @property
     def cells(self):
-        schema = self.resultSet.schema
+        for f in self.resultSet.schema.fields:
-        for f in schema.fields:
+            yield Cell(f, getattr(self.context, f.name), self)
-            yield Cell(f, getattr(self.context, f.__name__), self)
 
 
 class ResultSet(object):
@@ -72,11 +88,11 @@ class ResultSet(object):
     implements(IResultSet)
     adapts(IDataSource)
 
-    schema = None
     view = None
 
     def __init__(self, context):
         self.context = context
+        self.schema = Schema()
 
     @property
     def rows(self):