Class: SQLite

Inherits:
StorageType show all
Defined in:
lib/qooxview/storages/sqlite.rb

Instance Attribute Summary collapse

Attributes inherited from StorageType

#config, #data_cache, #name

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from StorageType

#add_field, #data_double, #data_each, data_load, data_save, #extract_data_old, #field_args, has?, #has_field, inherited, #initialize, #method_missing, new_st

Constructor Details

This class inherits a constructor from StorageType

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class StorageType

Instance Attribute Details

#db_class ⇒ Object (readonly)

Returns the value of attribute db_class.



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# File 'lib/qooxview/storages/sqlite.rb', line 14

def db_class
  @db_class
end

Class Method Details

.dbs_close_all ⇒ Object 



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# File 'lib/qooxview/storages/sqlite.rb', line 199

def self.dbs_close_all
  dputs(2) { 'Closing all dbs' }
  SQLite.with_all_sqlites { |sql|
    sql.close_db
  }
end

.dbs_open_load ⇒ Object 



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# File 'lib/qooxview/storages/sqlite.rb', line 206

def self.dbs_open_load
  dputs(2) { 'Opening all dbs' }
  SQLite.with_all_sqlites { |sql|
    sql.open_db
  }
  dputs(2) { 'Loading all dbs' }
  RPCQooxdooService.entities { |e|
    e.is_loaded = false
  }
  RPCQooxdooService.entities { |e|
    unless e.is_loaded
      e.loading = true
      e.load
      e.loading = false
      u = Users.match_by_name('local')
      dputs(2){"User is #{u}"}
    end
  }
end

.dbs_open_load_migrate ⇒ Object 



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# File 'lib/qooxview/storages/sqlite.rb', line 226

def self.dbs_open_load_migrate
  SQLite.dbs_open_load
  dputs(2) { 'Migrating all dbs' }
  RPCQooxdooService.migrate_all
end

.with_all_sqlites ⇒ Object 



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# File 'lib/qooxview/storages/sqlite.rb', line 187

def self.with_all_sqlites
  RPCQooxdooService.entities { |e|
    e.storage.each { |storage_name, storage_class|
      dputs(3) { "Found storage_name of #{storage_name.inspect}" }
      if storage_name.to_s =~ /^SQLite/
        dputs(3) { "Found #{e.name}::#{storage_name} as SQLite-something" }
        yield storage_class
      end
    }
  }
end

Instance Method Details

#close_db ⇒ Object

Allows for debugging when wanting to load another db



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# File 'lib/qooxview/storages/sqlite.rb', line 39

def close_db
  dputs(4) { "Closing db #{@name_file}" }
  ActiveRecord::Base.remove_connection
end

#configure(config, name_base = 'stsql', name_file = 'sql.db') ⇒ Object 



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# File 'lib/qooxview/storages/sqlite.rb', line 16

def configure(config, name_base = 'stsql', name_file = 'sql.db')
  dputs(2) { "Configuring SQLite with #{@name}" }
  @db_table = "#{name_base}_#{@name.downcase}s"
  @db_class_name = "#{name_base.capitalize}_#{@name.downcase}"
  @db_class = nil
  @sqlite_dir = File.join($data_dir, get_config('data',
                                                :StorageType, :data_dir))
  FileUtils.mkdir_p(@sqlite_dir)
  @name_file = name_file
  @db_file = File.join(@sqlite_dir, @name_file)
  # ActiveRecord::Base.logger = Logger.new('debug.log')
  ActiveRecord::Migration.verbose = false
  # ActiveRecord::Base.logger = Logger.new(STDERR)

  @mutex_es = Mutex.new

  dputs(4) { 'Opening database' }
  open_db

  super config
end

#data_create(data) ⇒ Object

Each new entry is directly stored, helping somewhat if the program or the computer crashes



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# File 'lib/qooxview/storages/sqlite.rb', line 102

def data_create(data)
  # dputs_func
  dputs(5) { "Creating early data #{data.inspect} with #{data.class}" }
  dputs(5) { "hello for #{data.inspect}" }
  dputs(5) { "db_class is #{@db_class.inspect}" }
  e = @db_class.create(data)
  dputs(5) { 'hello - 2' }
  new_id = e.attributes[@data_field_id.to_s]
  dputs(5) { "New id is #{new_id}" }
  data[@data_field_id] = new_id
  dputs(5) { "Creating data: #{e.inspect}" }
end

#delete(id) ⇒ Object 



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# File 'lib/qooxview/storages/sqlite.rb', line 176

def delete(id)
  entry = @db_class.find_by(id: id)
  if entry != nil
    entry.destroy
    @entries[id].delete
    if e = @entries_save[id]
      e.delete
    end
  end
end

#delete_all(local_only = false) ⇒ Object 



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# File 'lib/qooxview/storages/sqlite.rb', line 163

def delete_all(local_only = false)
  if !local_only
    db_table = @db_table
    dputs(2) { "Deleting table #{db_table}" }
    ActiveRecord::Schema.define do
      if table_exists? db_table
        drop_table db_table.to_sym
      end
    end
    init_table
  end
end

#init_table ⇒ Object 



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# File 'lib/qooxview/storages/sqlite.rb', line 115

def init_table
  # dputs_func
  db_table, fields = @db_table, @fields
  dputs(3) { "Initializing #{@db_class_name} with db_table=#{db_table.inspect}" }
  ActiveRecord::Schema.define do
    new_table = false
    if !table_exists? db_table
      dputs(2) { "Creating table #{db_table}" }
      create_table db_table
      new_table = true
    end
    dputs(3) { "Fields is #{fields.inspect}" }
    fields.each_key { |f|
      dputs(3) { "Checking for field #{f} in table #{db_table}" }
      if not columns(db_table).index { |c|
        c.name.to_s == f.to_s }
        dputs(new_table ? 4 : 1) { "Adding column #{f} of type " +
            "#{fields[f][:dtype]} to table #{db_table}" }
        case fields[f][:dtype]
          when /int/, /entity/
            add_column(db_table, f, :integer)
          when /bool/
            add_column(db_table, f, :boolean)
          when /float/
            add_column(db_table, f, :float)
          when /date/
            add_column(db_table, f, :date)
          else
            add_column(db_table, f, :string)
        end
      end
    }
  end
  #    ActiveRecord::Base.logger = nil
end

#load ⇒ Object

loads the data



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# File 'lib/qooxview/storages/sqlite.rb', line 152

def load
  dputs(2) { "Loading data for #{@db_class_name}" }
  res = Hash[*@db_class.all.collect { |s|
               @entries[s[@data_field_id]] = s
               [s[@data_field_id].to_i, s.attributes.symbolize_keys]
             }.flatten(1)
  ]
  dputs(5) { "Result is: #{res.inspect}" }
  return res
end

#open_db ⇒ Object 



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# File 'lib/qooxview/storages/sqlite.rb', line 44

def open_db
  @mutex_es.synchronize {
    dputs(4) { "Opening connection to #{@name_file} - #{@sqlite_dir}" }
    ActiveRecord::Base.establish_connection(
        :adapter => 'sqlite3', :database => @db_file)

    dputs(4) { 'Initializing tables' }
    init_table

    dputs(4) { 'Getting Base' }
    eval("class #{@db_class_name} < ActiveRecord::Base; end")
    @db_class = eval(@db_class_name)
    dputs(4) { "db_class is #{db_class.inspect}" }

    @entries = {}
    @entries_save = {}
  }
end

#save(data, notmp: false) ⇒ Object

Saves the data stored, optionally takes an index to say which data needs to be saved



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# File 'lib/qooxview/storages/sqlite.rb', line 65

def save(data, notmp: false)
  @mutex_es.synchronize {
    dputs(3) { "Saving #{@entries_save.count} entries in #{@db_class}" }
    @entries_save.each_value { |v|
      dputs(4){"Saving #{db_class} #{v.inspect} - #{v.id}"}
      v.save
    }
    @entries_save = {}
  }
end

#set_entry(data, field, value) ⇒ Object 



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# File 'lib/qooxview/storages/sqlite.rb', line 76

def set_entry(data, field, value)
  @mutex_es.synchronize {
    # dp "#{db_class} #{data.inspect} #{field} #{value}"
    dputs(5) { "Searching id #{data.inspect}" }
    if @entries[data]
      @entries[data].save
    end
    dat = @db_class.find(data)
    # dat = @db_class.first(:conditions => {@data_field_id => data})
    # dp @entries[data]
    # dp dat
    # dp data
    @entries[data] ||= dat
    if entry = @entries[data]
      entry.send("#{field}=", value)
      @entries_save[data] = entry
      return value
    else
      dputs(2) { "Didn't find id #{data.inspect}" }
      return nil
    end
  }
end