xgt.EdgeProxy¶
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class
xgt.
EdgeProxy
(conn, obj)¶ EdgeProxy objects represent a collection of edges held on the xGT server and can be used to retrieve information about them. These objects are returned from a GraphProxy object, not directly instantiated.
Parameters: - conn : Service
An open connection to an xGT server.
- obj : json
Internal edge structure expressed in JSON objects.
Examples
>>> import xgt >>> conn = xgt.connect() >>> g = conn.get_graph('Company') >>> e = g.edges.WorksFor # WorksFor is an existing edge type >>> print(e.name)
Attributes: Methods
get_data
([offset, length])Returns edge data starting at a given offset and spanning a given length. get_data_pandas
([offset, length])Returns a Pandas DataFrame containing edge data starting at a given offset and spanning a given length. insert
(data)Inserts data rows. load
(paths[, headerMode])Loads data from a CSV file in the path and the computer indicated by the path. num_edges
()int: Gets the number of edges of the edge type. num_properties
()int: Gets the number of properties of the edge type. save
(path[, offset, length, headers])Writes the rows from the table to a CSV file in the path and the computer indicated by the path. entity -
__init__
(conn, obj)¶ Initialize self. See help(type(self)) for accurate signature.
Methods
__init__
(conn, obj)Initialize self. entity
()get_data
([offset, length])Returns edge data starting at a given offset and spanning a given length. get_data_pandas
([offset, length])Returns a Pandas DataFrame containing edge data starting at a given offset and spanning a given length. insert
(data)Inserts data rows. load
(paths[, headerMode])Loads data from a CSV file in the path and the computer indicated by the path. num_edges
()int: Gets the number of edges of the edge type. num_properties
()int: Gets the number of properties of the edge type. save
(path[, offset, length, headers])Writes the rows from the table to a CSV file in the path and the computer indicated by the path. Attributes
name
str: Name of the edge type. schema
CustomDictionary: Set of edge properties. source
str : Name of the source vertex. target
str : Name of the target vertex. -
get_data
(offset=0, length=None)¶ Returns edge data starting at a given offset and spanning a given length.
Parameters: - offset : int
Position (index) of the first row to be retrieved. Optional. Default=0.
- length : int
Maximum number of rows to be retrieved starting from the row indicated by offset. A value of ‘None’ means ‘all rows’ on and after the offset. Optional. Default=None.
Returns: - list of lists
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get_data_pandas
(offset=0, length=None)¶ Returns a Pandas DataFrame containing edge data starting at a given offset and spanning a given length.
Parameters: - offset : int
Position (index) of the first row to be retrieved. Optional. Default=0.
- length : int
Maximum number of rows to be retrieved starting from the row indicated by offset. A value of ‘None’ means ‘all rows’ on and after the offset. Optional. Default=None.
Returns: - Pandas DataFrame
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insert
(data)¶ Inserts data rows. The properties of the new data must match the schema in both order and type.
Parameters: - data : list or Pandas dataframe
Data represented by a list of lists of data items or by a Pandas Dataframe.
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load
(paths, headerMode=0)¶ Loads data from a CSV file in the path and the computer indicated by the path.
Parameters: - paths : list
Paths to the CSV files. Syntax for one CSV file path:
local to python: ‘<absolute path to csv file>’ xgtd computer: ‘xgtd://<absolute path to csv file>’ AWS s3: ‘s3://<absolute path to csv file>’ https site: ‘https://<absolute path to csv file>’ http site: ‘http://<absolute path to csv file>’ ftps server: ‘ftps://<absolute path to csv file>’
- headerMode : str
- Indicates if the files contain headers:
HeaderMode.NONE HeaderMode.IGNORE HeaderMode.NORMAL HeaderMode.STRICT
Optional. Default=HeaderMode.NONE.
Examples
>>> import xgt >>> conn = xgt.connect() >>> ... >>> g = conn.get_graph('Company') >>> g.edges.WorksFor.load('xgtd:///home/username/file.csv')
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name
¶ str: Name of the edge type.
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num_edges
()¶ int: Gets the number of edges of the edge type.
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num_properties
()¶ int: Gets the number of properties of the edge type.
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save
(path, offset=0, length=None, headers=False)¶ Writes the rows from the table to a CSV file in the path and the computer indicated by the path.
Parameters: - path : str
Path to the CSV file. Syntax for one CSV file path:
local to python: ‘<absolute path to csv file>’ xgtd computer: ‘xgtd://<absolute path to csv file>’ AWS s3: ‘s3://<absolute path to csv file>’ https site: ‘https://<absolute path to csv file>’ http site: ‘http://<absolute path to csv file>’ ftps server: ‘ftps://<absolute path to csv file>’
- offset : int
Position (index) of the first row to be retrieved. Optional. Default=0.
- length : int
Maximum number of rows to be retrieved. Optional. Default=None.
- headers : boolean
Indicates if headers should be added. Optional. Default=False.
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schema
¶ CustomDictionary: Set of edge properties.
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source
¶ str : Name of the source vertex.
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target
¶ str : Name of the target vertex.