# Path: debian/elevator/usr/share/pyshared/elevator/db.py
# class DatabaseOptions(dict):
#     def __init__(self, *args, **kwargs):
#         self['create_if_missing'] = True
#         self['error_if_exists'] = False
#         self['paranoid_checks'] = False
#         self['block_cache_size'] = 8 * (2 << 20)
#         self['write_buffer_size'] = 2 * (2 << 20)
#         self['block_size'] = 4096
#         self['max_open_files'] = 1000
# 
#         for key, value in kwargs.iteritems():
#             if key in self:
#                 self[key] = value
# 
# Path: debian/elevator/usr/share/pyshared/elevator/constants.py
# KEY_ERROR = 1
# 
# TYPE_ERROR = 0
# 
# DATABASE_ERROR = 6
# 
# VALUE_ERROR = 2
# 
# RUNTIME_ERROR = 4
# 
# SIGNAL_ERROR = 7
# 
# SUCCESS_STATUS = 1
# 
# FAILURE_STATUS = -1
# 
# WARNING_STATUS = -2
# 
# SIGNAL_BATCH_PUT = 1
# 
# SIGNAL_BATCH_DELETE = 0


import leveldb
import logging
from .db import DatabaseOptions
from .message import ResponseContent, ResponseHeader
from .constants import KEY_ERROR, TYPE_ERROR, DATABASE_ERROR,\
                       VALUE_ERROR, RUNTIME_ERROR, SIGNAL_ERROR,\
                       SUCCESS_STATUS, FAILURE_STATUS, WARNING_STATUS,\
                       SIGNAL_BATCH_PUT, SIGNAL_BATCH_DELETE
from .utils.patterns import destructurate
from .helpers.internals import failure, success
        value = []
        pos = 0

        while pos < offset:
            try:
                value.append(it.next())
            except StopIteration:
                break
            pos += 1

        return success(value)

    def Batch(self, db, collection, *args, **kwargs):
        batch = leveldb.WriteBatch()
        batch_actions = {
            SIGNAL_BATCH_PUT: batch.Put,
            SIGNAL_BATCH_DELETE: batch.Delete,
        }

        try:
            for command in collection:
                signal, args = destructurate(command)
                batch_actions[signal](*args)
        except KeyError:  # Unrecognized signal
            return (FAILURE_STATUS,
                    [SIGNAL_ERROR, "Unrecognized signal received : %r" % signal])
        except ValueError:
            return (FAILURE_STATUS,
                    [VALUE_ERROR, "Batch only accepts sequences (list, tuples,...)"])
        except TypeError:

# Path: debian/elevator/usr/share/pyshared/elevator/db.py
# class DatabaseOptions(dict):
#     def __init__(self, *args, **kwargs):
#         self['create_if_missing'] = True
#         self['error_if_exists'] = False
#         self['paranoid_checks'] = False
#         self['block_cache_size'] = 8 * (2 << 20)
#         self['write_buffer_size'] = 2 * (2 << 20)
#         self['block_size'] = 4096
#         self['max_open_files'] = 1000
# 
#         for key, value in kwargs.iteritems():
#             if key in self:
#                 self[key] = value
# 
# Path: debian/elevator/usr/share/pyshared/elevator/constants.py
# KEY_ERROR = 1
# 
# TYPE_ERROR = 0
# 
# DATABASE_ERROR = 6
# 
# VALUE_ERROR = 2
# 
# RUNTIME_ERROR = 4
# 
# SIGNAL_ERROR = 7
# 
# SUCCESS_STATUS = 1
# 
# FAILURE_STATUS = -1
# 
# WARNING_STATUS = -2
# 
# SIGNAL_BATCH_PUT = 1
# 
# SIGNAL_BATCH_DELETE = 0


# Path: debian/elevator/usr/share/pyshared/elevator/api.py
import leveldb
import logging
from .db import DatabaseOptions
from .message import ResponseContent, ResponseHeader
from .constants import KEY_ERROR, TYPE_ERROR, DATABASE_ERROR,\
                       VALUE_ERROR, RUNTIME_ERROR, SIGNAL_ERROR,\
                       SUCCESS_STATUS, FAILURE_STATUS, WARNING_STATUS,\
                       SIGNAL_BATCH_PUT, SIGNAL_BATCH_DELETE
from .utils.patterns import destructurate
from .helpers.internals import failure, success

        value = []
        pos = 0

        while pos < offset:
            try:
                value.append(it.next())
            except StopIteration:
                break
            pos += 1

        return success(value)

    def Batch(self, db, collection, *args, **kwargs):
        batch = leveldb.WriteBatch()
        batch_actions = {
            SIGNAL_BATCH_PUT: batch.Put,
            SIGNAL_BATCH_DELETE: batch.Delete,
        }

        try:
            for command in collection:
                signal, args = destructurate(command)
                batch_actions[signal](*args)
        except KeyError:  # Unrecognized signal
            return (FAILURE_STATUS,
                    [SIGNAL_ERROR, "Unrecognized signal received : %r" % signal])
        except ValueError:
            return (FAILURE_STATUS,
                    [VALUE_ERROR, "Batch only accepts sequences (list, tuples,...)"])
        except TypeError:

            return (FAILURE_STATUS,