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Code Issues 32 Releases Wiki Activity

[boulder-oracle-sprint] Added truncate_name to ADD CONSTRAINT code

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git-svn-id: http://code.djangoproject.com/svn/django/branches/boulder-oracle-sprint@3976 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Boulder Sprinters
2006-11-04 20:43:43 +00:00
parent a642b4ada2
commit b543ef9bf1
1 changed files with 22 additions and 27 deletions
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49
django/core/management.py
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@@ -6,7 +6,7 @@ from django.core.exceptions import ImproperlyConfigured
import os, re, shutil, sys, textwrap import os, re, shutil, sys, textwrap
from optparse import OptionParser from optparse import OptionParser
from django.utils import termcolors from django.utils import termcolors
from django.conf import settings from django.conf import settings
# For Python 2.3 # For Python 2.3
if not hasattr(__builtins__, 'set'): if not hasattr(__builtins__, 'set'):
@@ -164,8 +164,8 @@ def _get_sql_model_create(model, known_models=set()):
field_output.append(style.SQL_KEYWORD('UNIQUE')) field_output.append(style.SQL_KEYWORD('UNIQUE'))
if f.primary_key: if f.primary_key:
field_output.append(style.SQL_KEYWORD('PRIMARY KEY')) field_output.append(style.SQL_KEYWORD('PRIMARY KEY'))
if (settings.DATABASE_ENGINE == 'oracle') and f.unique and f.primary_key: if (settings.DATABASE_ENGINE == 'oracle') and f.unique and f.primary_key:
# Suppress UNIQUE/PRIMARY KEY for Oracle (ORA-02259) # Suppress UNIQUE/PRIMARY KEY for Oracle (ORA-02259)
field_output.remove(style.SQL_KEYWORD('UNIQUE')) field_output.remove(style.SQL_KEYWORD('UNIQUE'))
if f.rel: if f.rel:
if f.rel.to in known_models: if f.rel.to in known_models:
@@ -191,11 +191,11 @@ def _get_sql_model_create(model, known_models=set()):
full_statement.append(' %s%s' % (line, i < len(table_output)-1 and ',' or '')) full_statement.append(' %s%s' % (line, i < len(table_output)-1 and ',' or ''))
full_statement.append(');') full_statement.append(');')
final_output.append('\n'.join(full_statement)) final_output.append('\n'.join(full_statement))
# To simulate auto-incrementing primary keys in Oracle -- creating primary tables # To simulate auto-incrementing primary keys in Oracle -- creating primary tables
if (settings.DATABASE_ENGINE == 'oracle') & (opts.has_auto_field): if (settings.DATABASE_ENGINE == 'oracle') & (opts.has_auto_field):
sequence_statement = 'CREATE SEQUENCE %s_sq;' % opts.db_table sequence_statement = 'CREATE SEQUENCE %s_sq;' % opts.db_table
final_output.append(sequence_statement) final_output.append(sequence_statement)
trigger_statement = '' + \ trigger_statement = '' + \
'CREATE OR REPLACE trigger %s_tr\n' % opts.db_table + \ 'CREATE OR REPLACE trigger %s_tr\n' % opts.db_table + \
' before insert on %s\n' % backend.quote_name(opts.db_table) + \ ' before insert on %s\n' % backend.quote_name(opts.db_table) + \
@@ -203,8 +203,8 @@ def _get_sql_model_create(model, known_models=set()):
' when (new.id is NULL)\n' + \ ' when (new.id is NULL)\n' + \
' begin\n' + \ ' begin\n' + \
' select %s_sq.NEXTVAL into :new.id from DUAL;\n' % opts.db_table + \ ' select %s_sq.NEXTVAL into :new.id from DUAL;\n' % opts.db_table + \
' end;\n' ' end;\n'
final_output.append(trigger_statement) final_output.append(trigger_statement)
return final_output, pending_references return final_output, pending_references
@@ -214,6 +214,7 @@ def _get_sql_for_pending_references(model, pending_references):
Get any ALTER TABLE statements to add constraints after the fact. Get any ALTER TABLE statements to add constraints after the fact.
""" """
from django.db import backend, get_creation_module from django.db import backend, get_creation_module
from django.db.backend.util import truncate_name
data_types = get_creation_module().DATA_TYPES data_types = get_creation_module().DATA_TYPES
final_output = [] final_output = []
@@ -229,15 +230,9 @@ def _get_sql_for_pending_references(model, pending_references):
# For MySQL, r_name must be unique in the first 64 characters. # For MySQL, r_name must be unique in the first 64 characters.
# So we are careful with character usage here. # So we are careful with character usage here.
r_name = '%s_refs_%s_%x' % (r_col, col, abs(hash((r_table, table)))) r_name = '%s_refs_%s_%x' % (r_col, col, abs(hash((r_table, table))))
# if constraint name size is over 29 char and db is oracle, chop it final_output.append(style.SQL_KEYWORD('ALTER TABLE') + ' %s ADD CONSTRAINT %s FOREIGN KEY (%s) REFERENCES %s (%s);' % \
if settings.DATABASE_ENGINE == 'oracle' and len(r_name) > 29: (backend.quote_name(r_table), truncate_name(r_name, backend.get_max_name_length()),
final_output.append(style.SQL_KEYWORD('ALTER TABLE') + ' %s ADD CONSTRAINT %s FOREIGN KEY (%s) REFERENCES %s (%s);' % \ backend.quote_name(r_col), backend.quote_name(table), backend.quote_name(col)))
(backend.quote_name(r_table), r_name[0:29],
backend.quote_name(r_col), backend.quote_name(table), backend.quote_name(col)))
else:
final_output.append(style.SQL_KEYWORD('ALTER TABLE') + ' %s ADD CONSTRAINT %s FOREIGN KEY (%s) REFERENCES %s (%s);' % \
(backend.quote_name(r_table), r_name,
backend.quote_name(r_col), backend.quote_name(table), backend.quote_name(col)))
del pending_references[model] del pending_references[model]
return final_output return final_output
@@ -275,11 +270,11 @@ def _get_many_to_many_sql_for_model(model):
style.SQL_FIELD(backend.quote_name(f.m2m_reverse_name())))) style.SQL_FIELD(backend.quote_name(f.m2m_reverse_name()))))
table_output.append(');') table_output.append(');')
final_output.append('\n'.join(table_output)) final_output.append('\n'.join(table_output))
# To simulate auto-incrementing primary keys in Oracle -- creating m2m tables # To simulate auto-incrementing primary keys in Oracle -- creating m2m tables
if (settings.DATABASE_ENGINE == 'oracle'): if (settings.DATABASE_ENGINE == 'oracle'):
m_table = f.m2m_db_table() m_table = f.m2m_db_table()
sequence_statement = 'CREATE SEQUENCE %s_sq;' % m_table sequence_statement = 'CREATE SEQUENCE %s_sq;' % m_table
final_output.append(sequence_statement) final_output.append(sequence_statement)
trigger_statement = '' + \ trigger_statement = '' + \
'CREATE OR REPLACE trigger %s_tr\n' % m_table + \ 'CREATE OR REPLACE trigger %s_tr\n' % m_table + \
' before insert on %s\n' % backend.quote_name(m_table) + \ ' before insert on %s\n' % backend.quote_name(m_table) + \
@@ -287,8 +282,8 @@ def _get_many_to_many_sql_for_model(model):
' when (new.id is NULL)\n' + \ ' when (new.id is NULL)\n' + \
' begin\n' + \ ' begin\n' + \
' select %s_sq.NEXTVAL into :new.id from DUAL;\n' % m_table + \ ' select %s_sq.NEXTVAL into :new.id from DUAL;\n' % m_table + \
' end;\n' ' end;\n'
final_output.append(trigger_statement) final_output.append(trigger_statement)
return final_output return final_output
def get_sql_delete(app): def get_sql_delete(app):
@@ -520,7 +515,7 @@ def syncdb(verbosity=1, interactive=True):
if verbosity >= 1: if verbosity >= 1:
print "Creating table %s" % model._meta.db_table print "Creating table %s" % model._meta.db_table
for statement in sql: for statement in sql:
cursor.execute(statement) cursor.execute(statement)
table_list.append(model._meta.db_table) table_list.append(model._meta.db_table)
for model in model_list: for model in model_list: