[2] | 1 | """ |
---|
| 2 | Migration script to add necessary columns for distinguishing between viewing/importing and publishing histories, \ |
---|
| 3 | workflows, and pages. Script adds published column to histories and workflows and importable column to pages. |
---|
| 4 | """ |
---|
| 5 | |
---|
| 6 | from sqlalchemy import * |
---|
| 7 | from sqlalchemy.orm import * |
---|
| 8 | from migrate import * |
---|
| 9 | from migrate.changeset import * |
---|
| 10 | |
---|
| 11 | import logging |
---|
| 12 | log = logging.getLogger( __name__ ) |
---|
| 13 | |
---|
| 14 | metadata = MetaData( migrate_engine ) |
---|
| 15 | db_session = scoped_session( sessionmaker( bind=migrate_engine, autoflush=False, autocommit=True ) ) |
---|
| 16 | |
---|
| 17 | def upgrade(): |
---|
| 18 | print __doc__ |
---|
| 19 | metadata.reflect() |
---|
| 20 | |
---|
| 21 | # Create published column in history table. |
---|
| 22 | History_table = Table( "history", metadata, autoload=True ) |
---|
| 23 | c = Column( "published", Boolean, index=True ) |
---|
| 24 | try: |
---|
| 25 | c.create( History_table ) |
---|
| 26 | assert c is History_table.c.published |
---|
| 27 | except Exception, e: |
---|
| 28 | print "Adding published column to history table failed: %s" % str( e ) |
---|
| 29 | log.debug( "Adding published column to history table failed: %s" % str( e ) ) |
---|
| 30 | |
---|
| 31 | |
---|
| 32 | # Create index for published column in history table. |
---|
| 33 | try: |
---|
| 34 | i = Index( "ix_history_published", History_table.c.published ) |
---|
| 35 | i.create() |
---|
| 36 | except: |
---|
| 37 | # Mysql doesn't have a named index, but alter should work |
---|
| 38 | History_table.c.published.alter( unique=False ) |
---|
| 39 | |
---|
| 40 | # Create published column in stored workflows table. |
---|
| 41 | StoredWorkflow_table = Table( "stored_workflow", metadata, autoload=True ) |
---|
| 42 | c = Column( "published", Boolean, index=True ) |
---|
| 43 | try: |
---|
| 44 | c.create( StoredWorkflow_table ) |
---|
| 45 | assert c is StoredWorkflow_table.c.published |
---|
| 46 | except Exception, e: |
---|
| 47 | print "Adding published column to stored_workflow table failed: %s" % str( e ) |
---|
| 48 | log.debug( "Adding published column to stored_workflow table failed: %s" % str( e ) ) |
---|
| 49 | |
---|
| 50 | # Create index for published column in stored workflows table. |
---|
| 51 | try: |
---|
| 52 | i = Index( "ix_stored_workflow_published", StoredWorkflow_table.c.published ) |
---|
| 53 | i.create() |
---|
| 54 | except: |
---|
| 55 | # Mysql doesn't have a named index, but alter should work |
---|
| 56 | StoredWorkflow_table.c.published.alter( unique=False ) |
---|
| 57 | |
---|
| 58 | # Create importable column in page table. |
---|
| 59 | Page_table = Table( "page", metadata, autoload=True ) |
---|
| 60 | c = Column( "importable", Boolean, index=True ) |
---|
| 61 | try: |
---|
| 62 | c.create( Page_table ) |
---|
| 63 | assert c is Page_table.c.importable |
---|
| 64 | except Exception, e: |
---|
| 65 | print "Adding importable column to page table failed: %s" % str( e ) |
---|
| 66 | log.debug( "Adding importable column to page table failed: %s" % str( e ) ) |
---|
| 67 | |
---|
| 68 | # Create index for importable column in page table. |
---|
| 69 | try: |
---|
| 70 | i = Index( "ix_page_importable", Page_table.c.importable ) |
---|
| 71 | i.create() |
---|
| 72 | except: |
---|
| 73 | # Mysql doesn't have a named index, but alter should work |
---|
| 74 | Page_table.c.importable.alter( unique=False ) |
---|
| 75 | |
---|
| 76 | def downgrade(): |
---|
| 77 | metadata.reflect() |
---|
| 78 | |
---|
| 79 | # Drop published column from history table. |
---|
| 80 | History_table = Table( "history", metadata, autoload=True ) |
---|
| 81 | try: |
---|
| 82 | History_table.c.published.drop() |
---|
| 83 | except Exception, e: |
---|
| 84 | print "Dropping column published from history table failed: %s" % str( e ) |
---|
| 85 | log.debug( "Dropping column published from history table failed: %s" % str( e ) ) |
---|
| 86 | |
---|
| 87 | # Drop published column from stored_workflow table. |
---|
| 88 | StoredWorkflow_table = Table( "stored_workflow", metadata, autoload=True ) |
---|
| 89 | try: |
---|
| 90 | StoredWorkflow_table.c.published.drop() |
---|
| 91 | except Exception, e: |
---|
| 92 | print "Dropping column published from stored_workflow table failed: %s" % str( e ) |
---|
| 93 | log.debug( "Dropping column published from stored_workflow table failed: %s" % str( e ) ) |
---|
| 94 | |
---|
| 95 | # Drop importable column from page table. |
---|
| 96 | Page_table = Table( "page", metadata, autoload=True ) |
---|
| 97 | try: |
---|
| 98 | Page_table.c.importable.drop() |
---|
| 99 | except Exception, e: |
---|
| 100 | print "Dropping column importable from page table failed: %s" % str( e ) |
---|
| 101 | log.debug( "Dropping column importable from page table failed: %s" % str( e ) ) |
---|