Class: DbMeta::Oracle::Objects

Inherits:
Object
  • Object
show all
Extended by:
Helper
Includes:
Helper
Defined in:
lib/db_meta/oracle/objects.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Helper

block, create_folder, pluralize, remove_folder, type_sequence, write_buffer_to_file

Constructor Details

#initialize ⇒ Objects

Returns a new instance of Objects.



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# File 'lib/db_meta/oracle/objects.rb', line 9

def initialize
  @data = Hash.new { |h, type| h[type] = {} }
  @worker_queue = ::Queue.new
  @types_with_object_status_default = []

  @summary = Hash.new { |h, type| h[type] = 0 }
  @summary_system_object = Hash.new { |h, type| h[type] = 0 }
  @invalids = Hash.new { |h, type| h[type] = [] }
end

Instance Attribute Details

#summary_system_object ⇒ Object (readonly)

Returns the value of attribute summary_system_object.



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# File 'lib/db_meta/oracle/objects.rb', line 7

def summary_system_object
  @summary_system_object
end

Class Method Details

.all ⇒ Object 



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# File 'lib/db_meta/oracle/objects.rb', line 201

def self.all
  objects = []

  # get all objects as a hash containing name, type, status
  items = []
  types = []
  connection = Connection.instance.get
  cursor = connection.exec(OBJECT_QUERY)
  cursor.fetch_hash do |item|
    items << item
    types << item["OBJECT_TYPE"]
  end
  cursor.close

  # sort items and make an object instance
  items.sort_by { |i| [type_sequence(i["OBJECT_TYPE"]), i["OBJECT_NAME"]] }.each do |item|
    objects << Base.from_type(item)
  end

  Log.info("Objects: #{items.size}, Object Types: #{types.uniq.size}")

  objects
end

Instance Method Details

#<<(object) ⇒ Object 



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# File 'lib/db_meta/oracle/objects.rb', line 19

def <<(object)
  @data[object.type][object.name] = object
  @worker_queue << object

  @summary[object.type] += 1
  @summary_system_object[object.type] += 1 if object.system_object?
  @invalids[object.type] << object if [:invalid, :disabled].include?(object.status)
end

#default_each ⇒ Object 



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# File 'lib/db_meta/oracle/objects.rb', line 163

def default_each
  @data.keys.sort_by { |type| type_sequence(type) }.each do |type|
    @data[type].keys.sort.each do |name|
      object = @data[type][name]
      next if object.system_object?
      next unless object.extract_type == :default
      yield(object)
    end
  end
end

#detect_system_objects ⇒ Object 



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# File 'lib/db_meta/oracle/objects.rb', line 48

def detect_system_objects
  Log.info("Detecting system objects...")

  # detect materialized view tables
  @data["MATERIALZIED VIEW"].values.each do |object|
    table = @data["TABLE"][object.name]
    next unless table
    table.system_object = true
  end

  @data["QUEUE"].values.each do |object|
    table = @data["TABLE"][object.queue_table]
    next unless table
    table.system_object = true
  end
end

#embed_constraints ⇒ Object 



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# File 'lib/db_meta/oracle/objects.rb', line 102

def embed_constraints
  Log.info("Embedding constraints...")

  @data["CONSTRAINT"].values.each do |constraint|
    next unless @data["TABLE"][constraint.table_name]
    @data["TABLE"][constraint.table_name].add_object(constraint)
  end
end

#embed_indexes ⇒ Object 



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# File 'lib/db_meta/oracle/objects.rb', line 93

def embed_indexes
  Log.info("Embedding indexes...")

  @data["INDEX"].values.each do |object|
    next unless @data["TABLE"][object.table_name]
    @data["TABLE"][object.table_name].add_object(object)
  end
end

#embed_triggers ⇒ Object 



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# File 'lib/db_meta/oracle/objects.rb', line 111

def embed_triggers
  Log.info("Embedding triggers...")

  @data["TRIGGER"].values.each do |object|
    table_object = @data["TABLE"][object.table_name]

    if table_object
      table_object.add_object(object)
    else
      # if there is no table relation, just extract as default
      object.extract_type = :default
    end
  end
end

#fetch(args = {}) ⇒ Object 



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# File 'lib/db_meta/oracle/objects.rb', line 28

def fetch(args = {})
  # bulk-load metadata that would otherwise drive N round-trips per object
  Constraint.preload

  # fetch details in parallel
  # number of threads = physical connections / 2 to prevent application locking
  worker = (1..Connection.instance.worker / 2).map {
    Thread.new do
      while (object = @worker_queue.pop(true))
        Log.info(" - #{object.type} - #{object.name}")
        object.fetch
      end
    rescue ThreadError
    ensure
      Connection.instance.release_thread_connection
    end
  }
  worker.map(&:join) # wait until all are done
end

#handle_table_data(args) ⇒ Object 



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# File 'lib/db_meta/oracle/objects.rb', line 141

def handle_table_data(args)
  Log.info("Handling table data...")

  @exclude_data = args[:exclude_data] if args[:exclude_data]
  @include_data = args[:include_data] if args[:include_data]

  tables = []
  @data["TABLE"].values.each do |table|
    next if table.system_object?
    if @exclude_data
      next if table.name&.match?(@exclude_data)
    end
    if @include_data
      next unless table.name&.match?(@include_data)
    end
    tables << table
  end

  self << TableDataCollection.new(name: "ALL CORE DATA", type: "DATA", tables: tables)
  @summary["DATA"] -= 1 # no need to count DATA object
end

#invalid_each ⇒ Object 



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# File 'lib/db_meta/oracle/objects.rb', line 195

def invalid_each
  @invalids.each_pair do |type, objects|
    yield type, objects
  end
end

#invalids? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/db_meta/oracle/objects.rb', line 191

def invalids?
  @invalids.keys.size > 0
end

#merge_constraints ⇒ Object 



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# File 'lib/db_meta/oracle/objects.rb', line 126

def merge_constraints
  Log.info("Merging constraints...")
  constraint_collection = ConstraintCollection.new(type: "CONSTRAINT", name: "ALL FOREIGN KEYS")

  @data["CONSTRAINT"].values.each do |object|
    next unless object.extract_type == :merged
    constraint_collection << object
  end

  return if constraint_collection.empty?

  self << constraint_collection
  @summary["CONSTRAINT"] -= 1 # no need to count collection object
end

#merge_grants ⇒ Object 



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# File 'lib/db_meta/oracle/objects.rb', line 79

def merge_grants
  Log.info("Merging grants...")
  grant_collection = GrantCollection.new(type: "GRANT", name: "ALL")

  @data["GRANT"].values.sort_by { |o| o.sort_value }.each do |object|
    grant_collection << object
  end

  return if grant_collection.empty?

  self << grant_collection
  @summary["GRANT"] -= 1 # no need to count collection object
end

#merge_synonyms ⇒ Object 



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# File 'lib/db_meta/oracle/objects.rb', line 65

def merge_synonyms
  Log.info("Merging synonyms...")
  synonym_collection = SynonymCollection.new(type: "SYNONYM", name: "ALL")

  @data["SYNONYM"].values.each do |object|
    synonym_collection << object
  end

  return if synonym_collection.empty?

  self << synonym_collection
  @summary["SYNONYM"] -= 1 # no need to count collection object
end

#reverse_default_each ⇒ Object 



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# File 'lib/db_meta/oracle/objects.rb', line 174

def reverse_default_each
  @data.keys.sort_by { |type| type_sequence(type) }.reverse_each do |type|
    @data[type].keys.sort.each do |name|
      object = @data[type][name]
      next if object.system_object?
      next unless object.extract_type == :default
      yield object
    end
  end
end

#summary_each ⇒ Object 



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# File 'lib/db_meta/oracle/objects.rb', line 185

def summary_each
  @summary.each_pair do |type, count|
    yield type, count
  end
end