Option to redefine column names in data array

bt5/erp5_wendelin/DocumentTemplateItem/portal_components/document.erp5.DataArrayLine.py

@@ -26,6 +26,7 @@
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #
 ##############################################################################
+import numpy as np
 from Products.ERP5Type.Base import TempBase
 from erp5.component.document.DataArray import DataArray
 from Products.ERP5Type.Utils import createExpressionContext, \
@@ -51,14 +52,26 @@ class DataArrayLine(DataArray):
     Get numpy view of Parent Data Array according to index.
     """
     getindex = GetIndex("getindex")
-    expression_context = createExpressionContext(None, portal=getindex)
     index = evaluateExpressionFromString(
-      expression_context,
+      createExpressionContext(None, portal=getindex),
       "python: portal[%s]" %self.getIndexExpression()
     )
-    array_view = self.getParentValue().getArray()[index]
-    dtype = self.getDtype()
-    if dtype is not None:
+    zbigarray = self.getParentValue().getArray()
+    try:
+      array_view = zbigarray[index]
+    except TypeError:
+      array = zbigarray[:]
+      new_dtype = np.dtype({name:array.dtype.fields[name] for name in index})
+      array_view = np.ndarray(array.shape, new_dtype, array, 0, array.strides)
+    name_list = self.getNameList()
+    dtype_expression = self.getDtypeExpression()
+    if dtype_expression is not None or name_list:
+      if dtype_expression is None:
+        dtype = np.dtype(array_view.dtype)
+      else:
+        dtype = evaluateExpressionFromString(
+        createExpressionContext(None, portal=getindex),
+        dtype_expression)
+      dtype.names = name_list
       return array_view.view(dtype=dtype)
-    else:
-      return array_view
+    return array_view

bt5/erp5_wendelin/PropertySheetTemplateItem/portal_property_sheets/DataArrayLine/dtype_property.xml → bt5/erp5_wendelin/PropertySheetTemplateItem/portal_property_sheets/DataArrayLine/dtype_expression_property.xml

@@ -22,7 +22,7 @@
         </item>
         <item>
             <key> <string>id</string> </key>
-            <value> <string>dtype_property</string> </value>
+            <value> <string>dtype_expression_property</string> </value>
         </item>
         <item>
             <key> <string>portal_type</string> </key>

bt5/erp5_wendelin/PropertySheetTemplateItem/portal_property_sheets/DataArrayLine/name_property.xml

+<?xml version="1.0"?>
+<ZopeData>
+  <record id="1" aka="AAAAAAAAAAE=">
+    <pickle>
+      <global name="Standard Property" module="erp5.portal_type"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>categories</string> </key>
+            <value>
+              <tuple>
+                <string>elementary_type/lines</string>
+              </tuple>
+            </value>
+        </item>
+        <item>
+            <key> <string>description</string> </key>
+            <value> <string>List of filends name of array dtype</string> </value>
+        </item>
+        <item>
+            <key> <string>id</string> </key>
+            <value> <string>name_property</string> </value>
+        </item>
+        <item>
+            <key> <string>multivalued</string> </key>
+            <value> <int>0</int> </value>
+        </item>
+        <item>
+            <key> <string>portal_type</string> </key>
+            <value> <string>Standard Property</string> </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+</ZopeData>

bt5/erp5_wendelin/SkinTemplateItem/portal_skins/erp5_wendelin/DataArrayLine_view.xml

@@ -75,7 +75,6 @@
                     <value>
                       <list>
                         <string>my_reference</string>
-                        <string>my_dtype</string>
                       </list>
                     </value>
                 </item>
@@ -84,6 +83,8 @@
                     <value>
                       <list>
                         <string>my_index_expression</string>
+                        <string>my_dtype_expression</string>
+                        <string>my_name_list</string>
                       </list>
                     </value>
                 </item>

bt5/erp5_wendelin/SkinTemplateItem/portal_skins/erp5_wendelin/DataArrayLine_view/my_dtype.xml → bt5/erp5_wendelin/SkinTemplateItem/portal_skins/erp5_wendelin/DataArrayLine_view/my_dtype_expression.xml

@@ -17,7 +17,7 @@
         </item>
         <item>
             <key> <string>id</string> </key>
-            <value> <string>my_dtype</string> </value>
+            <value> <string>my_dtype_expression</string> </value>
         </item>
         <item>
             <key> <string>message_values</string> </key>
@@ -78,7 +78,7 @@
                 </item>
                 <item>
                     <key> <string>field_id</string> </key>
-                    <value> <string>my_string_field</string> </value>
+                    <value> <string>my_view_mode_tales_expression</string> </value>
                 </item>
                 <item>
                     <key> <string>form_id</string> </key>