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