/usr/lib/mysql-workbench/modules/migration_schema_selection.py is in mysql-workbench 6.2.3+dfsg-7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# 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; version 2 of the
# License.
#
# 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., 51 Franklin St, Fifth Floor, Boston, MA
# 02110-1301 USA
import grt
import mforms
import re
from workbench.ui import WizardPage, WizardProgressPage, DatabaseSchemaSelector
class SchemaMainView(WizardPage):
def __init__(self, main):
WizardPage.__init__(self, main, 'Schemas Selection')
self._ui_created = False
self.main.add_wizard_page(self, 'SourceTarget', 'Schemas Selection')
optionspanel = mforms.newPanel(mforms.TitledBoxPanel)
optionspanel.set_title('Schema Name Mapping Method')
optionsbox = mforms.newBox(False)
optionsbox.set_padding(8)
optionsbox.set_spacing(8)
optionsbox.add(mforms.newLabel('Choose how the reverse engineered schemas and objects should be mapped.\n'), False)
options = [ 'Keep schemas as they are: Catalog.Schema.Table -> Schema.Table',
'Only one schema: Catalog.Schema.Table -> Catalog.Table',
'Only one schema, keep current schema names as a prefix: Catalog.Schema.Table -> Catalog.Schema_Table',
]
rid = mforms.RadioButton.new_id()
self.options = []
for opt in options:
radio_button = mforms.newRadioButton(rid)
radio_button.set_text(opt)
optionsbox.add(radio_button, False)
self.options.append(radio_button)
self.options[1].set_active(True)
optionspanel.add(optionsbox)
self._optionspanel = optionspanel
#self._advanced_shown = False
#self._optionspanel.show(False)
self.content.add_end(optionspanel, False)
def page_activated(self, advancing):
WizardPage.page_activated(self, advancing)
if advancing:
self.doesSupportCatalogs = self.main.plan.migrationSource.rdbms.doesSupportCatalogs
match_str = r"\%s\.\%s" % (self.main.plan.migrationSource._db_module.quoteIdentifier('(.+)\\'), self.main.plan.migrationSource._db_module.quoteIdentifier('(.+)\\'))
if self.doesSupportCatalogs > 0:
catalog_schemata_list = [ (catalog_name, schema_name) for catalog_name, schema_name in (re.match(match_str, full_name).groups()
for full_name in self.main.plan.migrationSource.schemaNames) ]
self.catalog_schemata = {}
for catalog_name, schema_name in catalog_schemata_list:
self.catalog_schemata.setdefault(catalog_name, []).append(schema_name)
self.catalog_schemata = self.catalog_schemata.items()
self._optionspanel.show(True)
#self.advanced_button.show(True)
else:
self.catalog_schemata = [ schema_name for catalog_name, schema_name in (re.match(match_str, full_name).groups()
for full_name in self.main.plan.migrationSource.schemaNames) ]
self._optionspanel.show(False)
#self.advanced_button.show(False)
if self.schema_selector:
self.content.remove(self.schema_selector)
self.schema_selector = DatabaseSchemaSelector(self.catalog_schemata, tree_checked_callback=self.update_next_button)
self.content.add(self.schema_selector, True, True)
self.next_button.set_enabled(False)
def create_ui(self):
label = mforms.newLabel('Select the schemata you want to migrate:')
label.set_style(mforms.BoldStyle)
self.content.add(label, False)
self.schema_selector = None
def should_skip(self):
return self.main.plan.migrationSource.rdbms.doesSupportCatalogs < 0 and len(self.main.plan.migrationSource.schemaNames) == 1
def page_skipped(self):
# called when the page is not activated, because should_skip returned True
match_re = self.main.plan.migrationSource._db_module.quoteIdentifier('(.+)\\')
names = [re.match(match_re, s).groups()[0] for s in self.main.plan.migrationSource.schemaNames]
self.main.plan.migrationSource.selectedCatalogName, self.main.plan.migrationSource.selectedSchemataNames = ("def", names)
self.main.plan.state.applicationData["schemaMappingMethod"] = "drop_catalog"
def update_next_button(self, count):
self.next_button.set_enabled( bool(count) )
def schemata_to_migrate(self):
selected = self.schema_selector.get_selected()
if self.doesSupportCatalogs > 0:
if len(selected) > 1:
raise Exception('Cannot select multiple schemas from different catalogs')
catalog = selected.keys()[0]
return catalog, selected[catalog]
else:
return "def", selected
#def go_advanced(self):
# self._advanced_shown = not self._advanced_shown
# self._optionspanel.show(self._advanced_shown)
def go_next(self):
try:
self.main.plan.migrationSource.selectedCatalogName, self.main.plan.migrationSource.selectedSchemataNames = self.schemata_to_migrate()
except Exception, e:
mforms.Utilities.show_error("Invalid Selection", str(e), "OK", "", "")
return
def find_selected_option(): #TODO: When we finally drop py2.5 support substitute this with self.options.index(next(opt for opt in self.options if opt.get_active()))
for idx, option_radio in enumerate(self.options):
if option_radio.get_active():
return idx
return None
if self.doesSupportCatalogs:
self.main.plan.state.applicationData["schemaMappingMethod"] = ["drop_catalog", "drop_schema", "merge_schema"][find_selected_option()]
else:
self.main.plan.state.applicationData["schemaMappingMethod"] = "drop_catalog"
WizardPage.go_next(self)
class ReverseEngineerProgressView(WizardProgressPage):
def __init__(self, main):
WizardProgressPage.__init__(self, main, "Reverse Engineer Source", description="""Selected schema metadata will now be fetched from the source RDBMS and reverse engineered
so that its structure can be determined.""")
self._autostart = True
self.add_task(self.task_connect, "Connect to source DBMS")
self.add_threaded_task(self.task_reveng, "Reverse engineer selected schemas")
self.add_task(self.task_post_processing, "Post-processing of reverse engineered schemas")
self.main.add_wizard_page(self, "SourceTarget", "Reverse Engineer Source")
def task_connect(self):
grt.send_progress(-1, "Connecting...")
if not self.main.plan.migrationSource.connect():
raise Exception("Could not connect to source RDBMS")
return True
def go_back(self):
self.main.plan.migrationSource.resetProgressFlags()
self.reset(True)
WizardProgressPage.go_back(self)
def task_reveng(self):
self.main.plan.migrationSource.reverseEngineer()
return True
def task_post_processing(self):
selected_option = self.main.plan.state.applicationData.get("schemaMappingMethod")
# nothing needs to be done for drop_catalog
if selected_option == "drop_schema":
grt.send_info("Merging reverse engineered schema objects into a single schema...")
self._merge_schemata()
elif selected_option == "merge_schema":
grt.send_info("Merging and renaming reverse engineered schema objects into a single schema...")
self._merge_schemata(prefix='schema_name')
def _merge_schemata(self, prefix=''):
catalog = self.main.plan.migrationSource.catalog
schema = catalog.schemata[0]
# preserve the original name of the catalog
schema.oldName = schema.name
module_db = self.main.plan.migrationSource.module_db()
# otypes is something like ['tables', 'views', 'routines']:
otypes = [ suptype[0] for suptype in self.main.plan.migrationSource.supportedObjectTypes ]
# Update names for the objects of this first schema:
if prefix:
actual_prefix = (schema.name if prefix == 'schema_name' else schema.__id__) + '_'
for otype in otypes:
for obj in getattr(schema, otype):
# this will be used later during datacopy to refer to the original object to copy from
obj.oldName = module_db.quoteIdentifier(schema.oldName)+"."+module_db.quoteIdentifier(obj.name)
oname = obj.name
obj.name = actual_prefix + obj.name
grt.send_info("Object %s was renamed to %s" % (oname, obj.name))
else:
for otype in otypes:
for obj in getattr(schema, otype):
# this will be used later during datacopy to refer to the original object to copy from
obj.oldName = module_db.quoteIdentifier(schema.name)+"."+module_db.quoteIdentifier(obj.name)
schema.name = catalog.name
if not prefix:
known_names = dict( (otype, set(obj.name for obj in getattr(schema, otype))) for otype in otypes)
for other_schema in list(catalog.schemata)[1:]:
if other_schema.defaultCharacterSetName != schema.defaultCharacterSetName:
grt.send_warning('While merging schema %s into %s: Default charset for schemas differs (%s vs %s). Setting default charset to %s' % (other_schema.name, schema.name, other_schema.defaultCharacterSetName, schema.defaultCharacterSetName, schema.defaultCharacterSetName))
self.main.plan.state.addMigrationLogEntry(0, other_schema, None,
'While merging schema %s into %s: Default charset for schemas differs (%s vs %s). Setting default charset to %s' % (other_schema.name, schema.name, other_schema.defaultCharacterSetName, schema.defaultCharacterSetName, schema.defaultCharacterSetName))
if other_schema.defaultCollationName != schema.defaultCollationName:
grt.send_warning('While merging schema %s into %s: Default collation for schemas differs (%s vs %s). Setting default collation to %s' % (other_schema.name, schema.name, other_schema.defaultCollationName, schema.defaultCollationName, schema.defaultCollationName))
self.main.plan.state.addMigrationLogEntry(0, other_schema, None,
'While merging schema %s into %s: Default collation for schemas differs (%s vs %s). Setting default collation to %s' % (other_schema.name, schema.name, other_schema.defaultCollationName, schema.defaultCollationName, schema.defaultCollationName))
for otype in otypes:
other_objects = getattr(other_schema, otype)
if not prefix:
repeated_object_names = known_names[otype].intersection(obj.name for obj in other_objects)
if repeated_object_names:
objects_dict = dict( (obj.name, obj) for obj in other_objects )
for repeated_object_name in repeated_object_names:
objects_dict[repeated_object_name].name += '_' + other_schema.name
grt.send_warning('The name of the %(otype)s "%(oname)s" conflicts with other %(otype)s names: renamed to "%(onewname)s"' % { 'otype':otype[:-1],
'oname':repeated_object_name,
'onewname':objects_dict[repeated_object_name].name })
self.main.plan.state.addMigrationLogEntry(0, other_schema, None,
'The name of the %(otype)s "%(oname)s" conflicts with other %(otype)s names: renamed to "%(onewname)s"' % { 'otype':otype[:-1],
'oname':repeated_object_name,
'onewname':objects_dict[repeated_object_name].name }
)
known_names[otype].update(other_objects)
else:
actual_prefix = (other_schema.name if prefix == 'schema_name' else schema.__id__) + '_'
getattr(schema, otype).extend(other_objects)
for obj in other_objects:
# this will be used later during datacopy to refer to the original object to copy from
obj.oldName = module_db.quoteIdentifier(obj.owner.name)+"."+module_db.quoteIdentifier(obj.name)
obj.owner = schema
if prefix:
oname = obj.name
obj.name = actual_prefix + obj.name
grt.send_info("Object %s was renamed to %s" % (oname, obj.name))
# Keep only the merged schema:
catalog.schemata.remove_all()
catalog.schemata.append(schema)
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