Fixup DataArrayView

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

@@ -26,8 +26,52 @@
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #
 ##############################################################################
-from numpy.lib.recfunctions import merge_arrays
 from erp5.component.document.DataArray import DataArray
+from numpy import dtype
+from numpy.lib.recfunctions import merge_arrays
+from wendelin.lib.calc import mul
+import sys
+
+class MergedArray(object):
+
+  def __init__(self, array_list):
+    self.array_list = array_list
+
+  def __getitem__(self, idx):
+    if not(isinstance, idx, slice):
+      raise TypeError("Only slice index is supported.")
+    if idx.start == 0 and idx.stop == sys.maxint:
+      raise ValueError("Only partial slice is supported")
+    return merge_arrays([a[0:len(self)][idx] for a in self.array_list], flatten=True)
+
+  # ~~~ ndarray-like attributes
+  @property
+  def data(self):
+    raise TypeError("Direct access to data for BigArray is forbidden")
+  @property
+  def strides(self):
+    return (self.itemsize,)
+  @property
+  def dtype(self):
+    return dtype(reduce(lambda x, y: [(n, x.dtype.fields[n][0]) for n in x.dtype.names] +  [(n, y.dtype.fields[n][0]) for n in y.dtype.names], self.array_list))
+  @property
+  def shape(self):
+    return (min((len(a) for a in self.array_list)),)
+  @property
+  def size(self):
+    return mul(self.shape)
+  def __len__(self):
+    # lengths of the major axis
+    return self.shape[0]
+  @property
+  def itemsize(self):
+    return self.dtype.itemsize
+  @property
+  def nbytes(self):
+    return self.itemsize * self.size
+  @property
+  def ndim(self):
+    return len(self.shape)
 
 class DataArrayView(DataArray):
   """
@@ -44,7 +88,7 @@ class DataArrayView(DataArray):
     """
     Get numpy view of views defined in Data Array View Lines.
     """
-    line_list = [(l.getIntIndex(), l) for l in self.objectValues(portal_type="Data Array View Line")]
+    line_list = [(l.getIntIndex(), l.getArray()) for l in self.objectValues(portal_type="Data Array View Line")]
     if not line_list:
       return None
-    return merge_arrays([l[1].getArray() for l in sorted(line_list)], flatten=True)
+    return MergedArray([l[1] for l in sorted(line_list)])
\ No newline at end of file

bt5/erp5_wendelin/DocumentTemplateItem/portal_components/document.erp5.DataArrayView.xml

@@ -45,7 +45,9 @@
         <item>
             <key> <string>text_content_warning_message</string> </key>
             <value>
-              <tuple/>
+              <tuple>
+                <string>W: 81, 29: Redefining name \'dtype\' from outer scope (line 30) (redefined-outer-name)</string>
+              </tuple>
             </value>
         </item>
         <item>