Module: RestDelete

Included in:
ActiveOrient::OrientDB
Defined in:
lib/rest/delete.rb

Instance Method Summary collapse

Instance Method Details

#delete_class(o_class) ⇒ Object

Deletes the specified class and returns true on success

todo: remove all instances of the class



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# File 'lib/rest/delete.rb', line 37

def delete_class o_class
  cl = classname(o_class)
  return if cl.nil?
  logger.progname = 'RestDelete#DeleteClass'

  begin
    ## to do: if cl contains special characters, enclose with backticks
    response = @res["/class/#{ActiveOrient.database}/#{cl}"].delete
    if response.code == 204
  logger.info{"Class #{cl} deleted."}
  ActiveOrient.database_classes.delete(cl)
    end
  rescue RestClient::InternalServerError => e
    sentence=  JSON.parse( e.response)['errors'].last['content']
    if database_classes(requery: true).include?(cl)
  logger.error{"Class #{cl} still present."}
  logger.error{ sentence }
  false
    else
  logger.error{e.inspect}
  true
    end
  rescue Exception => e
    logger.error{e.message}
    logger.error{e.inspect}
  end
end

#delete_database(database:) ⇒ Object

Deletes the database and returns true on success

After the removal of the database, the working-database might be empty



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# File 'lib/rest/delete.rb', line 10

def delete_database database:
  logger.progname = 'RestDelete#DeleteDatabase'
  old_ds = ActiveOrient.database
  change_database database
  begin
    response = @res["/database/#{ActiveOrient.database}"].delete
    if database == old_ds
      change_database  'temp'
      logger.info{"Working database deleted, switched to temp"}
    else
      change_database old_ds
      logger.info{"Database #{database} deleted, working database is still #{ActiveOrient.database}"}
    end
  rescue RestClient::InternalServerError => e
    change_database old_ds
    logger.info{"Database #{database} NOT deleted, working database is still #{ActiveOrient.database}"}
  end
  !response.nil? && response.code == 204 ? true : false
end

#delete_property(o_class, field) ⇒ Object

PROPERTY #############



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# File 'lib/rest/delete.rb', line 123

def delete_property o_class, field
  logger.progname = 'RestDelete#DeleteProperty'
  begin
    response =   @res["/property/#{ActiveOrient.database}/#{classname(o_class)}/#{field}"].delete
    true if response.code == 204
  rescue RestClient::InternalServerError => e
    logger.error{"Property #{field} in  class #{classname(o_class)} NOT deleted" }
      false
  end
end

#delete_record(*rid) ⇒ Object Also known as: delete_document

Deletes a single Record when providing a single rid-link (#00:00) or a record

Deletes multible Records when providing a list of rid-links or a record
Todo: implement delete_edges after querying the database in one statement

Example:
record =  Vertex.create_document attributes: { something: 'something' }
Vertex.delete_record record

records= (1..100).map{|x| Vertex.create_document attributes: { something: x } }
Vertex.delete_record *records

delete_records provides the removal of datasets after quering the database.



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# File 'lib/rest/delete.rb', line 82

def delete_record *rid
  logger.progname = "ActiveOrient::RestDelete#DeleteRecord"
  ridvec= rid.map( &:to_orient).flatten
  unless ridvec.empty?
    ridvec.map do |rid|
      begin
 ActiveOrient::Base.remove_rid(  ActiveOrient::Base.get_rid(rid) ) 
        @res["/document/#{ActiveOrient.database}/#{rid[1..-1]}"].delete
      rescue RestClient::InternalServerError => e
        logger.error{"Record #{rid} NOT deleted"}
      rescue RestClient::ResourceNotFound
        logger.error{"Record #{rid} does not exist in the database"}
      else
        logger.info{"Record #{rid} deleted"}
      end
    end
  else
    logger.info{"No record deleted."}
    return nil
  end
end

#delete_records(o_class, where: {}) ⇒ Object Also known as: delete_documents

Deletes records. They are defined by a query. All records which match the attributes are deleted.

An Array with freed index-values is returned



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# File 'lib/rest/delete.rb', line 110

def delete_records o_class, where: {}
  logger.progname = 'RestDelete#DeleteRecords'
  records_to_delete = get_records(from: o_class, where: where)
  if records_to_delete.empty?
    logger.info{"No record found"}
  else
    delete_record records_to_delete
  end
end