erp5_catalog: Add SQLMethod class as ERP5 based class

Here, we are creating the SQLMethod class based on ZSQLMethods.SQL
class and XMLObject. Also, we are moving important 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 updation of _arg and
+    template attribute for SQLMethod which are used while creating query.
+    """
+    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,