Class: SchemaDoc::Worker

Inherits:
Object
  • Object
show all
Defined in:
lib/schemadoc/worker.rb

Defined Under Namespace

Classes: AbstractModel

Instance Method Summary collapse

Constructor Details

#initialize(config) ⇒ Worker

Returns a new instance of Worker.



14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
 
# File 'lib/schemadoc/worker.rb', line 14

def initialize( config )
  ## split into db config (for connection) and
  ## schemadoc config
  
  @config    = {}
  @db_config = {}

  config.each do |k,v|
    if k == 'database'
      @db_config = v   # note: discard key; use hash as connection spec
    else
      @config[ k ] = v
    end
  end

  puts "database connection spec:"
  pp @db_config
end

Instance Method Details

#build_index ⇒ Object 



96
97
98
99
100
101
102
103
104
105
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
141
142
143
144
145
146
147
148
 
# File 'lib/schemadoc/worker.rb', line 96

def build_index
  ####
  # build symbol index hash

  symbols = {}

  letters = %w(A B C D E F G H I J K L M N O P Q R S T U V W X Y Z)

  ## add a to z [26 entries]

  letters.each do |letter|
    symbols[letter] = {
       name:   letter,
       tables: [],
       columns: []
    }
  end

  @con.tables.sort.each do |name|

    table_key  = name[0].upcase
    symbols[table_key][:tables] << name

    @con.columns( name ).each do |col|
      col_key = col.name[0].upcase
      cols_ary = symbols[col_key][:columns]

      ## search for column name
      col_hash = cols_ary.find { |item| item[:name] == col.name }
      if col_hash.nil?
        col_hash = { name: col.name, tables: [] }
        cols_ary << col_hash
      end

      col_hash[:tables] << name  
    end
  end

  ## sort tables, cols and (in tables)
  symbols.each do |k,h|
    h[:tables] = h[:tables].sort

    h[:columns] = h[:columns].sort { |l,r| l[:name] <=> r[:name] }
    h[:columns].each { |col| col[:tables] = col[:tables].sort }
  end

  data = []
  symbols.each do |k,v|
    data << v     # turn data json into an array of letters (ever letter is a hash w/ name,tables,columns,etc.)
  end

  data
end

#build_schema ⇒ Object 



55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
 
# File 'lib/schemadoc/worker.rb', line 55

def build_schema
  ####
  # build schema hash

  schemas = {}

  @con.tables.sort.each do |name|

    t = { name: name,
          columns: []
        }
    @con.columns( name ).each do |col|
      t[:columns] << {
         name:    col.name,
         type:    col.sql_type.downcase,   # note: use integer (instead of INTEGER)
         default: col.default,
         null:    col.null
      }
    end

    schema_name = find_schema_for_table(name)
    puts "add '#{name}' to schema '#{schema_name}'"

    schema = schemas[schema_name]
    if schema.nil?
      # note: use schema_name from config (do NOT use key - might be different)
      schema = { name: schema_name, tables: [] }
      schemas[schema_name] = schema
    end
    schema[:tables] << t
  end

  data = { schemas: [] }
  schemas.each do |k,v|
    data[:schemas] << v   ## turn schemas into an array w/ name, tables, etc.
  end
  
  data
end

#connect ⇒ Object 



34
35
36
 
# File 'lib/schemadoc/worker.rb', line 34

def connect
  @con = AbstractModel.connection_for( @db_config )
end

#dump_schema ⇒ Object 



38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
 
# File 'lib/schemadoc/worker.rb', line 38

def dump_schema
  @con.tables.sort.map do |name|
     puts "#{name} : #{name.class.name}"
  end
  puts ''

  @con.tables.sort.each do |name|
    puts "#{name}"
    puts "-" * name.size

    @con.columns( name ).each do |col|
      puts "  #{col.name} #{col.sql_type}, #{col.default}, #{col.null} : #{col.class.name}"
    end
    puts ''
  end
end

#run(opts = {}) ⇒ Object 



151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
 
# File 'lib/schemadoc/worker.rb', line 151

def run( opts={} )
  connect()
  dump_schema()

  schema = build_schema()
  index  = build_index()

  ## pp schema

  File.open( 'database.json', 'w') do |f|
    f.write JSON.pretty_generate( schema )
  end

  File.open( 'symbols.json', 'w') do |f|
    f.write JSON.pretty_generate( index )
  end
end