Class: Baza::MysqlBaseDriver

Inherits:
BaseSqlDriver show all
Defined in:
lib/baza/mysql_base_driver.rb

Direct Known Subclasses

Driver::Mysql, Driver::Mysql2

Constant Summary

Constants inherited from BaseSqlDriver

BaseSqlDriver::SELECT_ARGS_ALLOWED_KEYS

Instance Attribute Summary

Attributes inherited from BaseSqlDriver

#cols, #conn, #db, #indexes, #sep_col, #sep_database, #sep_index, #sep_table, #sep_val, #tables

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from BaseSqlDriver

#count, #delete, #escape, #escape_column, #escape_database, #escape_index, #escape_table, from_object, #initialize, #insert, #select, #single, #sql_make_where, #sqlval, #supports_multiple_databases?

Constructor Details

This class inherits a constructor from Baza::BaseSqlDriver

Class Method Details

.args ⇒ Object 



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# File 'lib/baza/mysql_base_driver.rb', line 2

def self.args
  [{
    label: "Host",
    name: "host"
  }, {
    label: "Port",
    name: "port"
  }, {
    label: "Username",
    name: "user"
  }, {
    label: "Password",
    name: "pass"
  }, {
    label: "Database",
    name: "db"
  }, {
    label: "Encoding",
    name: "encoding"
  }]
end

Instance Method Details

#insert_multi(tablename, arr_hashes, args = {}) ⇒ Object

Inserts multiple rows in a table. Can return the inserted IDs if asked to in arguments.



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# File 'lib/baza/mysql_base_driver.rb', line 25

def insert_multi(tablename, arr_hashes, args = {})
  sql = "INSERT INTO `#{tablename}` ("

  first = true
  if args && args[:keys]
    keys = args[:keys]
  elsif arr_hashes.first.is_a?(Hash)
    keys = arr_hashes.first.keys
  else
    raise "Could not figure out keys."
  end

  keys.each do |col_name|
    sql << "," unless first
    first = false if first
    sql << "`#{escape_column(col_name)}`"
  end

  sql << ") VALUES ("

  first = true
  arr_hashes.each do |hash|
    if first
      first = false
    else
      sql << "),("
    end

    first_key = true
    if hash.is_a?(Array)
      hash.each do |val|
        if first_key
          first_key = false
        else
          sql << ","
        end

        sql << @db.sqlval(val)
      end
    else
      hash.each do |_key, val|
        if first_key
          first_key = false
        else
          sql << ","
        end

        sql << @db.sqlval(val)
      end
    end
  end

  sql << ")"

  return sql if args && args[:return_sql]

  query(sql)

  if args && args[:return_id]
    first_id = last_id
    raise "Invalid ID: #{first_id}" if first_id.to_i <= 0
    ids = [first_id]
    1.upto(arr_hashes.length - 1) do |count|
      ids << first_id + count
    end

    ids_length = ids.length
    arr_hashes_length = arr_hashes.length
    raise "Invalid length (#{ids_length}, #{arr_hashes_length})." unless ids_length == arr_hashes_length

    return ids
  else
    return nil
  end
end

#transaction ⇒ Object 



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# File 'lib/baza/mysql_base_driver.rb', line 101

def transaction
  @db.q("START TRANSACTION")

  begin
    yield @db
    @db.q("COMMIT")
  rescue
    @db.q("ROLLBACK")
    raise
  end
end