Products.ERP5.Document: Add SQLMethod class

Create the SQLMethod class based on ZSQLMethods.SQL
class and XMLObject. Also, move attributes to
property in 'SQL Method' property sheets.

product/ERP5/Document/SQLMethod.py

+# -*- coding: utf-8 -*-
+##############################################################################
+#
+# Copyright (c) 2016 Nexedi SARL and Contributors. All Rights Reserved.
+#                    Ayush Tiwari <ayush.tiwari@nexedi.com>
+#
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsability of assessing all potential
+# consequences resulting from its eventual inadequacies and bugs
+# End users who are looking for a ready-to-use solution with commercial
+# garantees and support are strongly adviced to contract a Free Software
+# Service Company
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+##############################################################################
+
+from AccessControl import ClassSecurityInfo
+
+from Products.ERP5Type.Globals import InitializeClass
+from Products.ERP5Type import Permissions, PropertySheet
+from Products.ERP5Type.XMLObject import XMLObject
+from Products.PythonScripts.PythonScript import \
+  PythonScript as ZopePythonScript
+from Products.ZSQLMethods.SQL import SQL as ZSQL
+
+# New ZSQLMethod addition function
+def manage_addSQLMethod(self, id, title='',
+                connection_id = '',
+                arguments = '',
+                template = '',
+                REQUEST=None,
+                *args,
+                **kw):
+  """
+  Add ERP5 SQL Method to the folder
+  """
+  id = str(id)
+  title = str(title)
+
+  # Create SQLMethod object container
+  c = SQLMethod(id, title, connection_id, arguments, template, self)
+
+  self._setObject(id, c)
+  c = self._getOb(id)
+  if REQUEST is not None:
+    REQUEST['RESPONSE'].redirect( 'manage_main' )
+  return c
+
+class SQLMethod(XMLObject, ZSQL):
+  """SQLMethod for ERP5.
+  """
+
+  meta_type = 'ERP5 SQL Method'
+  portal_type = 'SQL Method'
+  icon = None
+
+  # Declarative security
+  security = ClassSecurityInfo()
+  security.declareObjectProtected(Permissions.AccessContentsInformation)
+
+  # Add constructor methods
+  constructors = (manage_addSQLMethod,)
+
+  # Override manage and manage_main with ZSQL manage and manage_main respectively
+  manage = manage_main = ZSQL.manage
+
+  # View content list, Force /view, Standard option in SQLMethod
+  manage_options = ({'icon':'', 'label':'View','action':'view'},) \
+                    + ZSQL.manage_options
+
+  # Declarative properties
+  property_sheets = ( PropertySheet.Base
+                    , PropertySheet.XMLObject
+                    , PropertySheet.CategoryCore
+                    , PropertySheet.DublinCore
+                    , PropertySheet.SQLMethod
+                    , PropertySheet.CatalogFilter
+                    )
+
+  # Inheritence conflicts solved
+  __call__    = ZSQL.__call__
+  __getitem__ = ZSQL.__getitem__
+  PUT         = ZSQL.PUT
+  index_html  = ZSQL.index_html
+  manage_FTPget = ZSQL.manage_FTPget
+  dav__init     = ZSQL.dav__init
+
+  def __init__(self, id, title='',
+               connection_id = '',
+               arguments = '',
+               template = ''
+               ):
+    """
+    Assign attributes to this class and override ZSQL init method to have
+    consistency with manage_edit(as ZSQL init also creates manage_edit)
+    """
+    # Add the properties as the attributes for the SQL Method objects
+    # Useful while migrating data from ZSQLMethods to ERP5 SQLMethod objects 
+    self.id = id
+
+    # Initializing ZSQL class object is important as this will call manage_edit
+    # which will change database method properties
+    ZSQL.__init__(self, id, title, connection_id, arguments, template)
+
+  def _setArgumentsSrc(self, value):
+    """
+    We need to override this so as to generate _arg attribute for SQL Method.
+
+    'manage_edit' function for ZSQL Method is responsible for creating '_arg'
+    attribute from arguments_src property. That's why it is required to
+    call it everytime we edit arguments_src separately.
+    """
+    self._baseSetArgumentsSrc(value)
+    title = self.getTitle()
+    arguments = self.getArgumentsSrc()
+    src = self.getSrc()
+    connection_id = self.getConnectionId()
+    self.manage_edit(title, connection_id, arguments, src)
+
+  def _edit(self, **kw):
+    """
+    'manange_edit' function for ZSQLMethod needs to be called everytime after
+    editing SQLMethod object. This would insure the update of _arg and
+    template attribute for SQLMethod which are used while creating query.
+
+    https://github.com/zopefoundation/Products.ZSQLMethods/blob/master/src/Shared/DC/ZRDB/DA.py#L353
+    """
+    XMLObject._edit(self, **kw)
+    src = self.getSrc()
+    title = self.title
+    if title is None:
+      title = ''
+    connection_id = self.getConnectionId()
+    self.manage_edit(title, connection_id, self.arguments_src, src)
+
+InitializeClass(SQLMethod)

product/ERP5/__init__.py

@@ -53,9 +53,10 @@ from Tool import CategoryTool, SimulationTool, RuleTool, IdTool, TemplateTool,\
                  ConversionTool, RoundingTool, UrlRegistryTool, InterfaceTool,\
                  CertificateAuthorityTool, InotifyTool, TaskDistributionTool
 import ERP5Site
-from Document import PythonScript
+from Document import PythonScript, SQLMethod
 object_classes = ( ERP5Site.ERP5Site,
                    PythonScript.PythonScriptThroughZMI,
+                   SQLMethod.SQLMethod,
                  )
 portal_tools = ( CategoryTool.CategoryTool,
                  SimulationTool.SimulationTool,