##############################################################################
# 
# Zope Public License (ZPL) Version 1.0
# -------------------------------------
# 
# Copyright (c) Digital Creations.  All rights reserved.
# Copyright (c) Nexedi SARL 2004.  All rights reserved.
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# modification, are permitted provided that the following conditions are
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#    the documentation and/or other materials provided with the
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# This software consists of contributions made by Digital Creations and
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##############################################################################

from Products.ZMySQLDA.DA import *
from db import DeferredDB

manage_addZMySQLDeferredConnectionForm=HTMLFile('deferredConnectionAdd',globals())

def manage_addZMySQLDeferredConnection(self, id, title,
                                connection_string,
                                check=None, REQUEST=None):
    """Add a DB connection to a folder"""
    self._setObject(id, DeferredConnection(id, title, connection_string, check))
    if REQUEST is not None: return self.manage_main(self,REQUEST)

class DeferredConnection(Connection):
    """
        Experimental MySQL DA which implements
        deferred SQL code execution to reduce locking issues
    """
    meta_type=title='Z %s Database Deferred Connection' % database_type
    
    def factory(self): return DeferredDB
    
    def connect(self,s):
        try: self._v_database_connection.close()
        except: pass
        self._v_connected=''
        DB=self.factory()
        ## No try. DO.
        self._v_database_connection=DeferredDB(s)
        self._v_connected=DateTime()
        return self
       
classes=('DA.DeferredConnection')

meta_types=(
    {'name':'Z %s Database Deferred Connection' % database_type,
     'action':'manage_addZ%sDeferredConnectionForm' % database_type,
     },
    )

folder_methods={
    'manage_addZMySQLDeferredConnection':
    manage_addZMySQLDeferredConnection,
    'manage_addZMySQLDeferredConnectionForm':
    manage_addZMySQLDeferredConnectionForm,
    }

__ac_permissions__=(
    ('Add Z MySQL Database Connections',
     ('manage_addZMySQLConnectionForm',
      'manage_addZMySQLConnection')),
    )

misc_={'conn': ImageFile(
    os.path.join('Shared','DC','ZRDB','www','DBAdapterFolder_icon.gif'))}

for icon in ('table', 'view', 'stable', 'what',
             'field', 'text','bin','int','float',
             'date','time','datetime'):
    misc_[icon]=ImageFile(os.path.join('icons','%s.gif') % icon, globals())
