本文整理汇总了Python中psycopg2.Binary类的典型用法代码示例。如果您正苦于以下问题：Python Binary类的具体用法？Python Binary怎么用？Python Binary使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了Binary类的10个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Python代码示例。
示例1: PostGISAdapter
class PostGISAdapter(object):
def __init__(self, geom):
"Initializes on the geometry."
# Getting the WKB (in string form, to allow easy pickling of
# the adaptor) and the SRID from the geometry.
self.ewkb = bytes(geom.ewkb)
self.srid = geom.srid
self._adapter = Binary(self.ewkb)
def __conform__(self, proto):
# Does the given protocol conform to what Psycopg2 expects?
if proto == ISQLQuote:
return self
else:
raise Exception('Error implementing psycopg2 protocol. Is psycopg2 installed?')
def __eq__(self, other):
if not isinstance(other, PostGISAdapter):
return False
return (self.ewkb == other.ewkb) and (self.srid == other.srid)
def __str__(self):
return self.getquoted()
def prepare(self, conn):
"""
This method allows escaping the binary in the style required by the
server's `standard_conforming_string` setting.
"""
self._adapter.prepare(conn)
def getquoted(self):
"Returns a properly quoted string for use in PostgreSQL/PostGIS."
# psycopg will figure out whether to use E'\\000' or '\000'
return str('ST_GeomFromEWKB(%s)' % self._adapter.getquoted().decode())
开发者ID:AndrewBloody，项目名称:django，代码行数:35，代码来源:adapter.py
示例2: PostGISAdapter
class PostGISAdapter(object):
def __init__(self, obj, geography=False):
"""
Initialize on the spatial object.
"""
self.is_geometry = isinstance(obj, (Geometry, PostGISAdapter))
# Getting the WKB (in string form, to allow easy pickling of
# the adaptor) and the SRID from the geometry or raster.
if self.is_geometry:
self.ewkb = bytes(obj.ewkb)
self._adapter = Binary(self.ewkb)
else:
self.ewkb = to_pgraster(obj)
self.srid = obj.srid
self.geography = geography
def __conform__(self, proto):
# Does the given protocol conform to what Psycopg2 expects?
if proto == ISQLQuote:
return self
else:
raise Exception('Error implementing psycopg2 protocol. Is psycopg2 installed?')
def __eq__(self, other):
if not isinstance(other, PostGISAdapter):
return False
return (self.ewkb == other.ewkb) and (self.srid == other.srid)
def __hash__(self):
return hash((self.ewkb, self.srid))
def __str__(self):
return self.getquoted()
def prepare(self, conn):
"""
This method allows escaping the binary in the style required by the
server's `standard_conforming_string` setting.
"""
if self.is_geometry:
self._adapter.prepare(conn)
def getquoted(self):
"""
Return a properly quoted string for use in PostgreSQL/PostGIS.
"""
if self.is_geometry:
# Psycopg will figure out whether to use E'\\000' or '\000'.
return str('%s(%s)' % (
'ST_GeogFromWKB' if self.geography else 'ST_GeomFromEWKB',
self._adapter.getquoted().decode())
)
else:
# For rasters, add explicit type cast to WKB string.
return "'%s'::raster" % self.ewkb
开发者ID:atlassian，项目名称:django，代码行数:57，代码来源:adapter.py
示例3: get_db_prep_value
def get_db_prep_value(self, value, connection, prepared=False):
value = value if prepared else self.get_prep_value(value)
if isinstance(value, unicode):
value = Binary(value.encode("utf-8"))
elif isinstance(value, str):
value = Binary(value)
elif isinstance(value, Binary):
value = value
else:
raise ValueError("only str, unicode and bytea permited")
return value
开发者ID:kenbolton，项目名称:django-orm，代码行数:11，代码来源:bytea.py
示例4: get_db_prep_value
def get_db_prep_value(self, value, connection, prepared=False):
value = value if prepared else self.get_prep_value(value)
if isinstance(value, unicode):
value = Binary(value.encode('utf-8'))
elif isinstance(value, str):
value = Binary(value)
elif isinstance(value, (psycopg_binary_class, types.NoneType)):
value = value
else:
raise ValueError("Only str, unicode and bytea permited")
return value
开发者ID:mattiaslinnap，项目名称:pyshortcuts，代码行数:11，代码来源:fields.py
示例5: get_db_prep_value
def get_db_prep_value(self, value, connection, prepared=False):
value = value if prepared else self.get_prep_value(value)
if isinstance(value, six.text_type):
value = Binary(value.encode('utf-8'))
elif isinstance(value, six.binary_type):
value = Binary(value)
elif isinstance(value, psycopg_binary_class) or value is None:
value = value
else:
raise ValueError("only str and bytes permited")
return value
开发者ID:kcphysics，项目名称:djorm-ext-pgbytea，代码行数:11，代码来源:bytea.py
示例6: PatchedAdapter
class PatchedAdapter(PostGISAdapter):
def __init__(self, *args, **kwargs):
super(PatchedAdapter, self).__init__(*args, **kwargs)
self._adapter = Binary(self.ewkb)
def prepare(self, conn):
# Pass the connection to the adapter: this allows escaping the binary
# in the style required by the server's standard_conforming_string setting.
self._adapter.prepare(conn)
def getquoted(self):
"Returns a properly quoted string for use in PostgreSQL/PostGIS."
# psycopg will figure out whether to use E'\\000' or '\000'
return 'ST_GeomFromEWKB(%s)' % self._adapter.getquoted()
开发者ID:matthewwithanm，项目名称:django-scspostgis，代码行数:14，代码来源:adapter.py
示例7: __init__
def __init__(self, geom):
"Initializes on the geometry."
# Getting the WKB (in string form, to allow easy pickling of
# the adaptor) and the SRID from the geometry.
self.ewkb = bytes(geom.ewkb)
self.srid = geom.srid
self._adapter = Binary(self.ewkb)
开发者ID:percious，项目名称:django，代码行数:7，代码来源:adapter.py
示例8: PostGISAdapter
class PostGISAdapter(object):
def __init__(self, geom):
"Initializes on the geometry."
# Getting the WKB (in string form, to allow easy pickling of
# the adaptor) and the SRID from the geometry.
self.ewkb = str(geom.ewkb)
self.srid = geom.srid
self._adapter = Binary(self.ewkb)
def __conform__(self, proto):
# Does the given protocol conform to what Psycopg2 expects?
if proto == ISQLQuote:
return self
else:
m = 'Error implementing psycopg2 protocol. Is psycopg2 installed?'
raise Exception(m)
def __eq__(self, other):
return (self.ewkb == other.ewkb) and (self.srid == other.srid)
def __str__(self):
return self.getquoted()
def prepare(self, conn):
# Pass the connection to the adapter: this allows escaping the binary
# in the style required by the server's
# standard_conforming_string setting
self._adapter.prepare(conn)
def getquoted(self):
"Returns a properly quoted string for use in PostgreSQL/PostGIS."
# psycopg will figure out whether to use E'\\000' or '\000'
return 'ST_GeomFromEWKB(%s)' % self._adapter.getquoted()
def prepare_database_save(self, unused):
return self
开发者ID:ccnmtl，项目名称:blackrock，代码行数:36，代码来源:adapter.py
示例9: __init__
def __init__(self, obj, geography=False):
"""
Initialize on the spatial object.
"""
self.is_geometry = isinstance(obj, (Geometry, PostGISAdapter))
# Getting the WKB (in string form, to allow easy pickling of
# the adaptor) and the SRID from the geometry or raster.
if self.is_geometry:
self.ewkb = bytes(obj.ewkb)
self._adapter = Binary(self.ewkb)
else:
self.ewkb = to_pgraster(obj)
self.srid = obj.srid
self.geography = geography
开发者ID:atlassian，项目名称:django，代码行数:16，代码来源:adapter.py
示例10: __init__
def __init__(self, *args, **kwargs):
super(PatchedAdapter, self).__init__(*args, **kwargs)
self._adapter = Binary(self.ewkb)
开发者ID:matthewwithanm，项目名称:django-scspostgis，代码行数:3，代码来源:adapter.py
注：本文中的psycopg2.Binary类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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