DBI::DBD::Mysql::Database

# File lib/dbd/mysql/database.rb, line 130
def initialize(handle, attr)
    super
    # check server version to determine transaction capability
    ver_str = @handle.get_server_info
    major, minor, teeny = ver_str.split(".")
    teeny.sub!(/\D*$/, "")  # strip any non-numeric suffix if present
    server_version = major.to_i*10000 + minor.to_i*100 + teeny.to_i
    # It's not until 3.23.17 that SET AUTOCOMMIT,
    # BEGIN, COMMIT, and ROLLBACK all are available
    @have_transactions = (server_version >= 32317)
    # assume that the connection begins in AutoCommit mode
    @attr['AutoCommit'] = true
    @mutex = Mutex.new
end

# File lib/dbd/mysql/database.rb, line 293
def []=(attr, value)
    case attr
    when 'AutoCommit'
        if @have_transactions
            self.do("SET AUTOCOMMIT=" + (value ? "1" : "0"))
        else
            raise NotSupportedError
        end
    else
        raise NotSupportedError
    end

    @attr[attr] = value
end

# File lib/dbd/mysql/database.rb, line 393
def __client_info
    @handle.client_info
end

# File lib/dbd/mysql/database.rb, line 397
def __client_version
    @handle.client_version
end

# File lib/dbd/mysql/database.rb, line 353
def __createdb(db)
    @handle.create_db(db)
end

# File lib/dbd/mysql/database.rb, line 357
def __dropdb(db)
    @handle.drop_db(db)
end

# File lib/dbd/mysql/database.rb, line 381
def __host_info
    @handle.host_info
end

# File lib/dbd/mysql/database.rb, line 377
def __info
    @handle.info
end

# File lib/dbd/mysql/database.rb, line 369
def __insert_id
    @handle.insert_id
end

# File lib/dbd/mysql/database.rb, line 385
def __proto_info
    @handle.proto_info
end

# File lib/dbd/mysql/database.rb, line 365
def __reload
    @handle.reload
end

# File lib/dbd/mysql/database.rb, line 389
def __server_info
    @handle.server_info
end

# File lib/dbd/mysql/database.rb, line 361
def __shutdown
    @handle.shutdown
end

# File lib/dbd/mysql/database.rb, line 401
def __stat
    @handle.stat
end

# File lib/dbd/mysql/database.rb, line 373
def __thread_id
    @handle.thread_id
end

# File lib/dbd/mysql/database.rb, line 187
def columns(table)
    dbh = DBI::DatabaseHandle.new(self)
    uniques = []
    dbh.execute("SHOW INDEX FROM #{table}") do |sth|
        sth.each do |row|
            uniques << row[4] if row[1] == 0
        end
    end

    ret = nil
    dbh.execute("SHOW FIELDS FROM #{table}") do |sth|
        ret = sth.collect do |row|
            name, type, nullable, key, default, extra = row
            #type = row[1]
            #size = type[type.index('(')+1..type.index(')')-1]
            #size = 0
            #type = type[0..type.index('(')-1]

            sqltype, type, size, decimal = mysql_type_info(row[1])
            col = Hash.new
            col['name']           = name
            col['sql_type']       = sqltype
            col['type_name']      = type
            col['nullable']       = nullable == "YES"
            col['indexed']        = key != ""
            col['primary']        = key == "PRI"
            col['unique']         = uniques.index(name) != nil
            col['precision']      = size
            col['scale']          = decimal
            col['default']        = row[4]

            case col['type_name']
            when 'timestamp'
                col['dbi_type'] = DBI::Type::Timestamp
            end

            col
        end # collect
    end # execute

    ret
end

# File lib/dbd/mysql/database.rb, line 250
def commit
    if @have_transactions
        self.do("COMMIT")
    else
        raise NotSupportedError
    end
rescue MyError => err
    error(err)
end

# File lib/dbd/mysql/database.rb, line 152
def database_name
    sth = Statement.new(self, @handle, "select DATABASE()", @mutex)
    sth.execute
    res = sth.fetch
    sth.finish
    return res[0]
end

# File lib/dbd/mysql/database.rb, line 145
def disconnect
    self.rollback unless @attr['AutoCommit']
    @handle.close
rescue MyError => err
    error(err)
end

# File lib/dbd/mysql/database.rb, line 230
def do(stmt, *bindvars)
    st = Statement.new(self, @handle, stmt, @mutex)
    st.bind_params(*bindvars)
    res = st.execute
    st.finish
    return res
rescue MyError => err
    error(err)
end

# File lib/dbd/mysql/database.rb, line 160
def ping
    begin
        @handle.ping
        return true
    rescue MyError
        return false
    end
end

# File lib/dbd/mysql/database.rb, line 241
def prepare(statement)
    Statement.new(self, @handle, statement, @mutex)
end

# File lib/dbd/mysql/database.rb, line 264
def rollback
    if @have_transactions
        self.do("ROLLBACK")
    else
        raise NotSupportedError
    end
rescue MyError => err
    error(err)
end

# File lib/dbd/mysql/database.rb, line 169
def tables
    @handle.list_tables
rescue MyError => err
    error(err)
end