DBI::DBD::Pg::Statement

# File lib/dbd/pg/statement.rb, line 13
def initialize(db, sql)
    super(db)
    @db  = db
    @sql = sql
    @stmt_name = PG_STMT_NAME_PREFIX + self.object_id.to_s + Time.now.to_f.to_s
    @result = nil
    @bindvars = []
    @prepared = false
rescue PGError => err
    raise DBI::ProgrammingError.new(err.message)
end

# File lib/dbd/pg/statement.rb, line 100
def [](attr)
    case attr
    when 'pg_row_count'
        if @result
            @result.row_count
        else
            nil
        end
    else
        @attr[attr]
    end
end

# File lib/dbd/pg/statement.rb, line 25
def bind_param(index, value, options)
    @bindvars[index-1] = value
end

# File lib/dbd/pg/statement.rb, line 82
def column_info
    @result.column_info
end

# File lib/dbd/pg/statement.rb, line 35
def execute
    # replace DBI::Binary object by oid returned by lo_import
    @bindvars.collect! do |var|
        if var.is_a? DBI::Binary then
            oid = @db.__blob_create(PGconn::INV_WRITE)
            @db.__blob_write(oid, var.to_s)
            oid
        else
            var
        end
    end

    internal_prepare

    if not @db['AutoCommit'] then
        #          if not SQL.query?(boundsql) and not @db['AutoCommit'] then
        @db.start_transaction unless @db.in_transaction?
    end

    if @db["pg_native_binding"]
        pg_result = @db._exec_prepared(@stmt_name, *@bindvars)
    else
        pg_result = @db._exec_prepared(@stmt_name)
    end

    @result = DBI::DBD::Pg::Tuples.new(@db, pg_result)
rescue PGError, RuntimeError => err
    raise DBI::ProgrammingError.new(err.message)
end

# File lib/dbd/pg/statement.rb, line 65
def fetch
    @result.fetchrow
end

# File lib/dbd/pg/statement.rb, line 69
def fetch_scroll(direction, offset)
    @result.fetch_scroll(direction, offset)
end

# File lib/dbd/pg/statement.rb, line 73
def finish
    internal_finish
    @result = nil
    @db = nil
end

# File lib/dbd/pg/statement.rb, line 86
def rows
    if @result
        @result.rows_affected
    else
        nil
    end
end