Class: Baza::Driver::MysqlJava

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

Defined Under Namespace

Classes: Column, Columns, Index, Indexes, Table, Tables

Instance Attribute Summary collapse

Attributes inherited from BaseSqlDriver

#baza, #cols, #indexes, #sep_col, #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

#escape, #escape_column, #insert, #supports_multiple_databases?

Constructor Details

#initialize(baza) ⇒ MysqlJava

Returns a new instance of MysqlJava.



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# File 'lib/baza/drivers/mysql_java.rb', line 35

def initialize(baza)
  super

  @opts = @baza.opts

  if @opts[:encoding]
    @encoding = @opts[:encoding]
  else
    @encoding = "utf8"
  end

  if @baza.opts.key?(:port)
    @port = @baza.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/drivers/mysql_java.rb', line 18

def conn
  @conn
end

#conns ⇒ Object (readonly)

Returns the value of attribute conns.



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# File 'lib/baza/drivers/mysql_java.rb', line 18

def conns
  @conns
end

Class Method Details

.from_object(args) ⇒ Object

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



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# File 'lib/baza/drivers/mysql_java.rb', line 21

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/drivers/mysql_java.rb', line 80

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

#destroy ⇒ Object

Destroyes the connection.



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# File 'lib/baza/drivers/mysql_java.rb', line 85

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

#insert_multi(tablename, arr_hashes, args = nil) ⇒ Object

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



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# File 'lib/baza/drivers/mysql_java.rb', line 95

def insert_multi(tablename, arr_hashes, args = nil)
  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 << @baza.sqlval(val)
      end
    else
      hash.each do |_key, val|
        if first_key
          first_key = false
        else
          sql << ","
        end

        sql << @baza.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

#last_id ⇒ Object

Returns the last inserted ID for the connection.



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# File 'lib/baza/drivers/mysql_java.rb', line 73

def last_id
  data = query("SELECT LAST_INSERT_ID() AS id").fetch
  return data[:id].to_i if data[:id]
  raise "Could not figure out last inserted ID."
end

#reconnect ⇒ Object

Respawns the connection to the MySQL-database.



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# File 'lib/baza/drivers/mysql_java.rb', line 57

def reconnect
  @mutex.synchronize do
    if @baza.opts[:conn]
      @jdbc_loaded = true
      @conn = @baza.opts[:conn]
    else
      com.mysql.jdbc.Driver
      @conn = java.sql::DriverManager.getConnection("jdbc:mysql://#{@baza.opts[:host]}:#{@port}/#{@baza.opts[:db]}?user=#{@baza.opts[:user]}&password=#{@baza.opts[:pass]}&populateInsertRowWithDefaultValues=true&zeroDateTimeBehavior=round&characterEncoding=#{@encoding}&holdResultsOpenOverStatementClose=true")
    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/drivers/mysql_java.rb', line 171

def transaction
  query_no_result_set("START TRANSACTION")

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