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# Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
#
# 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 re
from wb import DefineModule
import grt
from db_generic_migration_grt import GenericMigration
from workbench.utils import find_object_with_name
ModuleInfo = DefineModule(name= "DbSybaseMigration", author= "Oracle Corp.", version="1.0")
truncated_identifier_serial = 0
class SybaseMigration(GenericMigration):
def migrateIdentifier(self, sybase_name, log, dots_allowed=True):
mysql_valid_regex = re.compile(r'^[^/\\.]+$', re.U) # Database and table names cannot contain "/", "\", ".", or characters that are not permitted in file names
mysql_name = sybase_name
# Remove quoting chars from the identifier if present
if ( sybase_name.startswith('"') and sybase_name.endswith('"') or
sybase_name.startswith('[') and sybase_name.endswith(']') ):
mysql_name = sybase_name[1:-1]
if not mysql_valid_regex.match(mysql_name) and log:
entry = grt.classes.GrtLogEntry()
entry.entryType = 2
entry.name = u'Sybase migrateIdentifier: Could not migrate identifier %s' % sybase_name
log.entries.append(entry)
# truncate too long identifiers
if len(mysql_name) > 64:
global truncated_identifier_serial
truncated_identifier_serial += 1
mysql_name = mysql_name[:62]+str(truncated_identifier_serial)
if log:
entry = grt.classes.GrtLogEntry()
entry.entryType = 1
entry.name = u'Identifier `%s` is too long, truncated to `%s`' % (sybase_name, mysql_name)
log.entries.append(entry)
return mysql_name
def migrateTableToMySQL(self, state, sourceTable, targetSchema):
targetTable = super(SybaseMigration, self).migrateTableToMySQL(state, sourceTable, targetSchema)
targetTable.defaultCharacterSetName, targetTable.defaultCollationName = self.migrateCharsetCollation(state, sourceTable.owner.defaultCharacterSetName, sourceTable.owner.defaultCollationName, sourceTable, targetTable)
return targetTable
def migrateColumnDefaultValue(self, state, default_value, source_column, target_column):
target_default_value = default_value
if source_column.simpleType:
source_datatype = source_column.simpleType.name
if source_datatype == 'TIMESTAMP':
if default_value == 'getdate()':
target_default_value = 'CURRENT_TIMESTAMP'
elif source_datatype in ['DATETIME', 'SMALLDATETIME']:
if source_column.defaultValue == 'getdate()':
target_default_value = 'CURRENT_TIMESTAMP'
# Only timestamp supports CURRENT_TIMESTAMP, so force the target type to it
target_column.simpleType = find_object_with_name(state.targetCatalog.simpleDatatypes, 'TIMESTAMP')
state.addMigrationLogEntry(0, source_column, target_column,
'Default value is %s, so type was changed from %s to TIMESTAMP' % (default_value, source_datatype))
if default_value and not default_value.startswith("'") and target_default_value == default_value:
# not a string, check for numeric literals
try:
float(default_value)
except:
# not a numeric literal
target_default_value = ''
state.addMigrationLogEntry(1, source_column, target_column,
'Default value %s is not supported' % default_value)
return target_default_value
def migrateDatatypeForColumn(self, state, source_column, target_column):
targetCatalog = state.targetCatalog
mysql_simpleTypes = dict( (datatype.name.upper(), datatype) for datatype in targetCatalog.simpleDatatypes )
source_type = source_column.simpleType
if not source_type and source_column.userType:
# evaluate user type
source_type = source_column.userType.actualType
target_column.flags.extend(source_column.userType.flags)
if source_type:
# Decide which mysql datatype corresponds to the column datatype:
source_datatype = source_type.name.upper()
# string data types:
target_datatype = ''
if source_datatype in ['VARCHAR', 'NVARCHAR', 'UNIVARCHAR']:
if 0 <= source_column.length < 256:
target_datatype = 'VARCHAR'
elif 0 <= source_column.length < 65536: # MySQL versions > 5.0 can hold up to 65535 chars in a VARCHAR column
if targetCatalog.version.majorNumber < 5:
target_datatype = 'MEDIUMTEXT'
else:
target_datatype = 'VARCHAR'
else:
target_datatype = 'LONGTEXT'
elif source_datatype in ['CHAR', 'NCHAR', 'UNICHAR']:
if source_column.length < 256:
target_datatype = 'CHAR'
else:
target_datatype = 'LONGTEXT'
elif source_datatype in ['TEXT', 'NTEXT', 'UNITEXT']:
target_datatype = 'LONGTEXT'
target_column.length = -1
# integer data types:
elif source_datatype in ['BIGINT', 'INT', 'SMALLINT']:
target_datatype = source_datatype
target_column.precision = -1
elif source_datatype == 'TINYINT':
target_datatype = source_datatype
target_column.precision = -1
if 'UNSIGNED' not in target_column.flags:
target_column.flags.append('UNSIGNED') # In Sybase TINYINT is unsigned
elif source_datatype == 'SYSNAME':
target_datatype = 'VARCHAR'
target_column.length = 30
state.addMigrationLogEntry(0, source_column, target_column,
"Source column type %s was migrated to %s(%s)" % (source_datatype, target_datatype, target_column.length))
elif source_datatype == 'LONGSYSNAME':
target_datatype = 'VARCHAR'
target_column.length = 255
state.addMigrationLogEntry(0, source_column, target_column,
"Source column type %s was migrated to %s(%s)" % (source_datatype, target_datatype, target_column.length))
# floating point datatypes:
elif source_datatype in ['DECIMAL', 'NUMERIC']:
target_datatype = 'DECIMAL'
elif source_datatype == 'REAL':
target_datatype = 'FLOAT'
target_column.precision = -1
elif source_datatype == 'FLOAT':
target_datatype = 'FLOAT' if source_column.length == 4 else 'DOUBLE'
target_column.precision = -1
elif source_datatype in ['MONEY', 'SMALLMONEY']:
target_datatype = 'DECIMAL'
target_column.precision = source_column.simpleType.numericPrecision
target_column.scale = source_column.simpleType.numericScale
# binary datatypes:
elif source_datatype == 'IMAGE':
target_datatype = 'LONGBLOB'
target_column.length = -1
elif source_datatype in ['BINARY', 'VARBINARY']:
if 0 <= source_column.length < 256:
if source_datatype == 'IMAGE':
target_datatype = 'TINYBLOB'
else:
target_datatype = source_datatype
elif 0 <= source_column.length < 65536:
target_datatype = 'MEDIUMBLOB'
else:
target_datatype = 'LONGBLOB'
# datetime datatypes:
elif source_datatype in ['DATETIME', 'SMALLDATETIME']:
target_datatype = 'DATETIME'
# timestamp datatypes
elif source_datatype == 'DATE':
target_datatype = 'DATE'
elif source_datatype == 'TIME':
target_datatype = 'TIME'
elif source_datatype == 'BIT':
target_datatype = 'TINYINT'
target_column.length = 1
state.addMigrationLogEntry(0, source_column, target_column,
"Source column type BIT was migrated to TINYINT(1)")
else:
# just fall back to same type name and hope for the best
target_datatype = source_datatype
if mysql_simpleTypes.has_key(target_datatype):
target_column.simpleType = mysql_simpleTypes[target_datatype]
else:
grt.log_warning("Sybase migrateTableColumnsToMySQL", "Can't find datatype %s for type %s\n" % (target_datatype, source_datatype))
state.addMigrationLogEntry(2, source_column, target_column,
'Could not migrate column "%s" in "%s": Unknown datatype "%s"' % (target_column.name, source_column.owner.name, source_datatype) )
return False
return True
else:
state.addMigrationLogEntry(2, source_column, target_column,
'Could not migrate type of column "%s" in "%s" (%s)' % (target_column.name, source_column.owner.name, source_column.formattedRawType) )
return False
return True
def migrateUpdateForChanges(self, state, target_catalog):
"""
Create datatype cast expression for target column based on source datatype.
"""
for targetSchema in target_catalog.schemata:
for targetTable in targetSchema.tables:
for target_column in targetTable.columns:
# SQL expression to use for converting the column data to the target type
# eg.: CAST(? as NVARCHAR(max))
type_cast_expression = None
source_datatype = None
source_column = state.lookupSourceObject(target_column)
if source_column:
source_datatype = GenericMigration.getColumnDataType(self, source_column)
if source_column and source_datatype:
if source_datatype == 'SYSNAME':
type_cast_expression = "CONVERT(VARCHAR(30), ?)"
elif source_datatype == 'LONGSYSNAME':
type_cast_expression = "CONVERT(VARCHAR(255), ?)"
if type_cast_expression:
target_column.owner.customData["columnTypeCastExpression:%s" % target_column.name] = "%s as ?" % type_cast_expression
return target_catalog
def migrateCharsetCollation(self, state, charset, collation, source_object, target_object):
if collation:
state.addMigrationLogEntry(0, source_object, target_object,
'Collation %s migrated to utf8_general_ci' % (collation))
return '', 'utf8_general_ci'
return charset, collation
def migrateTableColumnToMySQL(self, state, source_column, targetTable):
target_column = GenericMigration.migrateTableColumnToMySQL(self, state, source_column, targetTable)
if target_column:
# Autoincrement for integer datatypes:
if source_column.simpleType:
source_datatype = source_column.simpleType.name
if source_datatype in ['INT', 'TINYINT', 'SMALLINT', 'BIGINT']:
target_column.autoIncrement = source_column.identity
# TODO set charset/collation
#target_column.characterSetName =
return target_column
#def migrateTableIndexToMySQL(self, state, source_index, targetTable):
# index = GenericMigration.migrateTableIndexToMySQL(self, state, source_index, targetTable)
# return index
def migrateTableForeignKeyToMySQL(self, state, source_fk, targetTable):
target_fk = GenericMigration.migrateTableForeignKeyToMySQL(self, state, source_fk, targetTable)
### TODO: migrate constraints
return target_fk
instance = SybaseMigration()
@ModuleInfo.export(grt.STRING)
def getTargetDBMSName():
return 'Sybase'
@ModuleInfo.export(grt.STRING, grt.STRING, grt.classes.GrtLogObject)
def migrateIdentifier(name, log):
return instance.migrateIdentifier(name, log)
@ModuleInfo.export(grt.classes.db_Catalog, grt.classes.db_migration_Migration, grt.classes.db_Catalog)
def migrateCatalog(state, sourceCatalog):
return instance.migrateCatalog(state, sourceCatalog)
@ModuleInfo.export(grt.classes.db_Schema, grt.classes.db_migration_Migration, grt.classes.db_Schema, grt.classes.db_Catalog)
def migrateSchema(state, sourceSchema, targetCatalog):
return instance.migrateSchema(state, sourceSchema, targetCatalog)
@ModuleInfo.export(grt.classes.db_Table, grt.classes.db_migration_Migration, grt.classes.db_Table, grt.classes.db_Schema)
def migrateTableToMySQL(state, sourceTable, target_schema):
return instance.migrateTableToMySQL(state, sourceTable, target_schema)
@ModuleInfo.export(grt.INT, grt.classes.db_migration_Migration, grt.classes.db_Table, grt.classes.db_Table)
def migrateTableToMySQL2ndPass(state, sourceTable, targetTable):
return instance.migrateTableToMySQL2ndPass(state, sourceTable, targetTable)
@ModuleInfo.export(grt.classes.db_mysql_ForeignKey, grt.classes.db_migration_Migration, grt.classes.db_ForeignKey, grt.classes.db_Table)
def migrateTableForeignKeyToMySQL(state, source_fk, targetTable):
return instance.migrateTableForeignKeyToMySQL(state, source_fk, targetTable)
@ModuleInfo.export(grt.classes.db_mysql_Trigger, grt.classes.db_migration_Migration, grt.classes.db_Trigger, grt.classes.db_Table)
def migrateTriggerToMySQL(state, source_trigger, target_table):
return instance.migrateTriggerToMySQL(state, source_trigger, target_table)
@ModuleInfo.export(grt.classes.db_mysql_View, grt.classes.db_migration_Migration, grt.classes.db_View, grt.classes.db_Schema)
def migrateViewToMySQL(state, source_view, target_schema):
return instance.migrateViewToMySQL(state, source_view, target_schema)
@ModuleInfo.export(grt.classes.db_mysql_Routine, grt.classes.db_migration_Migration, grt.classes.db_Routine, grt.classes.db_Schema)
def migrateRoutineToMySQL(state, source_routine, target_schema):
return instance.migrateRoutineToMySQL(state, source_routine, target_schema)
@ModuleInfo.export(grt.classes.db_Catalog, grt.classes.db_migration_Migration, grt.classes.db_Catalog)
def migrateUpdateForChanges(state, target_catalog):
return instance.migrateUpdateForChanges(state, target_catalog)
@ModuleInfo.export((grt.LIST, grt.classes.db_migration_MigrationParameter), grt.classes.db_migration_Migration)
def getMigrationOptions(state):
list = grt.List(grt.OBJECT, grt.classes.db_migration_MigrationParameter.__grtclassname__)
return list
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