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LSST Data Management Base Package
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Public Member Functions | Protected Attributes | List of all members
lsst.dax.apdb.cassandra_utils.ApdbCassandraTableData Class Reference
Inheritance diagram for lsst.dax.apdb.cassandra_utils.ApdbCassandraTableData:
lsst.dax.apdb.apdb.ApdbTableData

Public Member Functions

 __init__ (self, list[str] columns, list[tuple] rows)
 
list[str] column_names (self)
 
Iterable[tuple] rows (self)
 
None append (self, ApdbCassandraTableData other)
 
Iterator[tuple] __iter__ (self)
 

Protected Attributes

 _columns
 
 _rows
 

Detailed Description

Implementation of ApdbTableData that wraps Cassandra raw data.

Definition at line 92 of file cassandra_utils.py.

Constructor & Destructor Documentation

◆ __init__()

lsst.dax.apdb.cassandra_utils.ApdbCassandraTableData.__init__ ( self,
list[str] columns,
list[tuple] rows )

Definition at line 95 of file cassandra_utils.py.

95 def __init__(self, columns: list[str], rows: list[tuple]):
96 self._columns = columns
97 self._rows = rows
98

Member Function Documentation

◆ __iter__()

Iterator[tuple] lsst.dax.apdb.cassandra_utils.ApdbCassandraTableData.__iter__ ( self)
Make it look like a row iterator, needed for some odd logic.

Definition at line 113 of file cassandra_utils.py.

113 def __iter__(self) -> Iterator[tuple]:
114 """Make it look like a row iterator, needed for some odd logic."""
115 return iter(self._rows)
116
117

◆ append()

None lsst.dax.apdb.cassandra_utils.ApdbCassandraTableData.append ( self,
ApdbCassandraTableData other )
Extend rows in this table with rows in other table

Definition at line 107 of file cassandra_utils.py.

107 def append(self, other: ApdbCassandraTableData) -> None:
108 """Extend rows in this table with rows in other table"""
109 if self._columns != other._columns:
110 raise ValueError(f"Different columns returned by queries: {self._columns} and {other._columns}")
111 self._rows.extend(other._rows)
112

◆ column_names()

list[str] lsst.dax.apdb.cassandra_utils.ApdbCassandraTableData.column_names ( self)
Return ordered sequence of column names in the table.

Returns
-------
names : `list` [`str`]
    Column names.

Reimplemented from lsst.dax.apdb.apdb.ApdbTableData.

Definition at line 99 of file cassandra_utils.py.

99 def column_names(self) -> list[str]:
100 # docstring inherited
101 return self._columns
102

◆ rows()

Iterable[tuple] lsst.dax.apdb.cassandra_utils.ApdbCassandraTableData.rows ( self)
Return table rows, each row is a tuple of values.

Returns
-------
rows : `iterable` [`tuple`]
    Iterable of tuples.

Reimplemented from lsst.dax.apdb.apdb.ApdbTableData.

Definition at line 103 of file cassandra_utils.py.

103 def rows(self) -> Iterable[tuple]:
104 # docstring inherited
105 return self._rows
106

Member Data Documentation

◆ _columns

lsst.dax.apdb.cassandra_utils.ApdbCassandraTableData._columns
protected

Definition at line 96 of file cassandra_utils.py.

◆ _rows

lsst.dax.apdb.cassandra_utils.ApdbCassandraTableData._rows
protected

Definition at line 97 of file cassandra_utils.py.


The documentation for this class was generated from the following file: