Datasource API¶
API for working with the Datasource type.
Import this module like this:
from sympathy.api import datasource
Class datasource.File
¶
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class
sympathy.typeutils.datasource.
File
(fileobj=None, data=None, filename=None, mode='r', scheme='hdf5', source=None, managed=False, import_links=False)[source]¶ A Datasource representing a sources of data. It can currently point to either a file on disk or to a database.
Any node port with the Datasource type will produce an object of this kind.
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decode_path
()[source]¶ Return the path.
In a file data source this corresponds to the path of a file. In a data base data source this corresponds to a connection string. That can be used for accessing the data base. Returns None if path hasn’t been set.
Changed in version 1.2.5: Return None instead of raising KeyError if path hasn’t been set.
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decode_type
()[source]¶ Return the type of this data source.
It can be either
'FILE'
or'DATABASE'
. Returns None if type hasn’t been set.Changed in version 1.2.5: Return None instead of raising KeyError if type hasn’t been set.
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encode
(datasource_dict)[source]¶ Store the info from datasource_dict in this datasource.
Parameters: datasource_dict – should be a dictionary of the same format that you get from to_file_dict()
orto_database_dict()
.
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encode_path
(filename)[source]¶ Store a path to a file in this datasource.
Parameters: filename – should be a string containing the path. Can be relative or absolute.
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static
to_file_dict
(fq_filename)[source]¶ Create a dictionary to be used for creating a file data source.
You usually want to use the convenience method
encode_path()
instead of calling this method directly.
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