Class: Baza::Driver::MysqlJava

Inherits:
JdbcDriver show all
Defined in:
lib/baza/driver/mysql_java.rb

Defined Under Namespace

Classes: Column, Columns, Commands, Database, Databases, Index, Indexes, Table, Tables, User, Users

Constant Summary

Constants inherited from BaseSqlDriver

BaseSqlDriver::SELECT_ARGS_ALLOWED_KEYS

Instance Attribute Summary collapse

Attributes inherited from BaseSqlDriver

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

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from JdbcDriver

#query, #query_ubuf, #result_set_killer

Methods inherited from BaseSqlDriver

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

Constructor Details

#initialize(db) ⇒ MysqlJava

Returns a new instance of MysqlJava.



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# File 'lib/baza/driver/mysql_java.rb', line 45

def initialize(db)
  super

  @opts = @db.opts
  @encoding = @opts[:encoding] || "utf8"

  if @db.opts.key?(:port)
    @port = @db.opts[:port].to_i
  else
    @port = 3306
  end

  @java_rs_data = {}
  reconnect
end

Instance Attribute Details

#conn ⇒ Object (readonly)

Returns the value of attribute conn.



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# File 'lib/baza/driver/mysql_java.rb', line 6

def conn
  @conn
end

#conns ⇒ Object (readonly)

Returns the value of attribute conns.



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# File 'lib/baza/driver/mysql_java.rb', line 6

def conns
  @conns
end

Class Method Details

.args ⇒ Object 



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# File 'lib/baza/driver/mysql_java.rb', line 23

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

.from_object(args) ⇒ Object

Helper to enable automatic registering of database using Baza::Db.from_object



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# File 'lib/baza/driver/mysql_java.rb', line 9

def self.from_object(args)
  if args[:object].class.name == "Java::ComMysqlJdbc::JDBC4Connection"
    return {
      type: :success,
      args: {
        type: :mysql_java,
        conn: args[:object]
      }
    }
  end

  nil
end

Instance Method Details

#close ⇒ Object

Closes the connection threadsafe.



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# File 'lib/baza/driver/mysql_java.rb', line 78

def close
  @mutex.synchronize { @conn.close }
end

#destroy ⇒ Object

Destroyes the connection.



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# File 'lib/baza/driver/mysql_java.rb', line 83

def destroy
  @conn = nil
  @db = nil
  @mutex = nil
  @encoding = nil
  @query_args = nil
  @port = nil
end

#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/driver/mysql_java.rb', line 93

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_no_result_set(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})." if ids_length != arr_hashes_length

    return ids
  else
    return nil
  end
end

#reconnect ⇒ Object

Respawns the connection to the MySQL-database.



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# File 'lib/baza/driver/mysql_java.rb', line 62

def reconnect
  @mutex.synchronize do
    if @db.opts[:conn]
      @jdbc_loaded = true
      @conn = @db.opts.fetch(:conn)
    else
      com.mysql.jdbc.Driver
      @conn = java.sql::DriverManager.getConnection(jdbc_connect_command)
    end

    query_no_result_set("SET SQL_MODE = ''")
    query_no_result_set("SET NAMES '#{esc(@encoding)}'") if @encoding
  end
end

#transaction ⇒ Object 



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# File 'lib/baza/driver/mysql_java.rb', line 169

def transaction
  query_no_result_set("START TRANSACTION")

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