Module: Tapsoob::Schema

Extended by:
Schema
Included in:
Schema
Defined in:
lib/tapsoob/schema.rb

Instance Method Summary collapse

Instance Method Details

#dump(database_url, options = {}) ⇒ Object 



12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
 
# File 'lib/tapsoob/schema.rb', line 12

def dump(database_url, options = {})
  db = Sequel.connect(database_url)
  db.extension :schema_dumper
  template = ERB.new "Class.new(Sequel::Migration) do\n  def up\n  <% db.send(:sort_dumped_tables, db.tables, {}).each do |table| %>\n<%= db.dump_table_schema(table, options) %>\n  <% end %>\n  end\n\n  def down\n  <% db.send(:sort_dumped_tables, db.tables, {}).reverse.each do |table| %>\ndrop_table(\"<%= table %>\", if_exists: true, cascade: true)\n  <% end %>\n  end\nend\n"

  template.result(binding)
end

#dump_table(database_url_or_db, table, options) ⇒ Object 



34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
 
# File 'lib/tapsoob/schema.rb', line 34

def dump_table(database_url_or_db, table, options)
  table = table.to_sym
  # Accept either a database URL or an existing connection object
  if database_url_or_db.is_a?(Sequel::Database)
    db = database_url_or_db
    db.extension :schema_dumper
    "Class.new(Sequel::Migration) do\n  def up\n\#{db.dump_table_schema(table, options)}\n  end\n\n  def down\ndrop_table(\"\#{table}\", if_exists: true)\n  end\nend\n"
  else
    Sequel.connect(database_url_or_db) do |db|
      db.extension :schema_dumper
      "Class.new(Sequel::Migration) do\n  def up\n\#{db.dump_table_schema(table, options)}\n  end\n\n  def down\ndrop_table(\"\#{table}\", if_exists: true)\n  end\nend\n"
    end
  end
end

#foreign_keys(database_url) ⇒ Object 



69
70
71
72
73
 
# File 'lib/tapsoob/schema.rb', line 69

def foreign_keys(database_url)
  db = Sequel.connect(database_url)
  db.extension :schema_dumper
  db.dump_foreign_key_migration
end

#indexes(database_url) ⇒ Object 



75
76
77
78
79
 
# File 'lib/tapsoob/schema.rb', line 75

def indexes(database_url)
  db = Sequel.connect(database_url)
  db.extension :schema_dumper
  db.dump_indexes_migration
end

#indexes_individual(database_url) ⇒ Object 



81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
 
# File 'lib/tapsoob/schema.rb', line 81

def indexes_individual(database_url)
  idxs = {}
  Sequel.connect(database_url) do |db|
    db.extension :schema_dumper

    tables = db.tables
    tables.each do |table|
      idxs[table] = db.send(:dump_table_indexes, table, :add_index, {}).split("\n")
    end
  end

  idxs.each do |table, indexes|
    idxs[table] = indexes.map do |idx|
      "Class.new(Sequel::Migration) do\n  def up\n\#{idx}\n  end\nend\n"
    end
  end
  JSON.generate(idxs)
end

#load(database_url_or_db, schema, options = { drop: false }) ⇒ Object 



106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
 
# File 'lib/tapsoob/schema.rb', line 106

def load(database_url_or_db, schema, options = { drop: false })
  # Accept either a database URL or an existing connection object
  if database_url_or_db.is_a?(Sequel::Database)
    db = database_url_or_db
    db.extension :schema_dumper
    klass = eval(schema)
    if options[:drop]
      # Start special hack for MySQL
      db.run("SET foreign_key_checks = 0") if [:mysql, :mysql2].include?(db.adapter_scheme)

      # Run down migration
      klass.apply(db, :down)

      # End special hack for MySQL
      db.run("SET foreign_key_checks = 1") if [:mysql, :mysql2].include?(db.adapter_scheme)
    end
    klass.apply(db, :up)
  else
    Sequel.connect(database_url_or_db) do |db|
      db.extension :schema_dumper
      klass = eval(schema)
      if options[:drop]
        # Start special hack for MySQL
        db.run("SET foreign_key_checks = 0") if [:mysql, :mysql2].include?(db.adapter_scheme)

        # Run down migration
        klass.apply(db, :down)

        # End special hack for MySQL
        db.run("SET foreign_key_checks = 1") if [:mysql, :mysql2].include?(db.adapter_scheme)
      end
      klass.apply(db, :up)
    end
  end
end

#load_foreign_keys(database_url, foreign_keys) ⇒ Object 



142
143
144
145
146
147
 
# File 'lib/tapsoob/schema.rb', line 142

def load_foreign_keys(database_url, foreign_keys)
  Sequel.connect(database_url) do |db|
    db.extension :schema_dumper
    eval(foreign_keys).apply(db, :up)
  end
end

#load_indexes(database_url, indexes) ⇒ Object 



149
150
151
152
153
154
 
# File 'lib/tapsoob/schema.rb', line 149

def load_indexes(database_url, indexes)
  Sequel.connect(database_url) do |db|
    db.extension :schema_dumper
    eval(indexes).apply(db, :up)
  end
end

#reset_db_sequences(database_url) ⇒ Object 



156
157
158
159
160
161
162
163
 
# File 'lib/tapsoob/schema.rb', line 156

def reset_db_sequences(database_url)
  db = Sequel.connect(database_url)
  db.extension :schema_dumper
  return unless db.respond_to?(:reset_primary_key_sequence)
  db.tables.each do |table|
    db.reset_primary_key_sequence(table)
  end
end