qubx :: tree :: NodeInFile_NoMap :: Class NodeInFile_NoMap

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Class NodeInFile_NoMap

 object --+    
          |    
NodeStorage --+
              |
             NodeInFile_NoMap

Manages the attributes and data of a Node inside a NodeFile_NoMap. Read-only.

Solves the (mainly 32-bit) problem of opening files that don't fit in address space, by leaving non-preload data on disk until node.data.read_rows().

Instance Methods

__init__(self, file, offset)
Instantiated by Node to either manage an existing node or create a new one within file:

source code

source code

get_offset(self)

source code

get_name(self)

source code

set_name(self, x)

source code

get_preload(self)

source code

set_preload(self, x)

source code

get_data(self)

source code

get_dataCount(self)

source code

get_dataSize(self)

source code

get_dataType(self)

source code

get_dataPos(self)

source code

get_childPos(self)

source code

set_childPos(self, x)

source code

get_siblingPos(self)

source code

set_siblingPos(self, x)

source code

get_rowcount(self)

source code

get_colcount(self)

source code

get_loaded(self)

source code

get_loadedRows(self)

source code

get_data_item(self, i)

source code

set_data_item(self, i, x)

source code

source code

setup_data(self, type, rows, cols)

source code

resize_data(self, nr, type_if_none)

source code

clear_data(self)

source code

load_rows(self, first, last, do_read)

source code

unload_rows(self, do_write)

source code

read_rows(self, first, last)

source code

write_rows(self, first, last, arr)

source code

get_rows(self, first, last)

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read(self)

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write(self)

source code

Inherited from NodeStorage: get_ondirtied, measure, set_clean, set_ondirtied, set_string_data

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Properties

__childPos

__cols

__data

__dataCount

__dataPos

__dataSize

__dataType

__data_in_node

__file

__loadedFirst

__loadedLast

__name

__offset

__preload

__rows

__siblingPos

Inherited from NodeStorage: OnDirtied, childPos, clean, cols, data, dataCount, dataPos, dataSize, dataType, file, loaded, loadedRows, name, offset, preload, rows, siblingPos

Inherited from object: __class__

Method Details

init(self, file, offset)
(Constructor)


Instantiated by Node to either manage an existing node or create a new one within file:

      reads in the node structure at offset bytes and set up access to its data.

Overrides: object.__init__

get_file(self)

Overrides: NodeStorage.get_file

get_offset(self)

Overrides: NodeStorage.get_offset

get_dataPos(self)

Overrides: NodeStorage.get_dataPos

get_childPos(self)

Overrides: NodeStorage.get_childPos

set_childPos(self, x)

Overrides: NodeStorage.set_childPos

get_siblingPos(self)

Overrides: NodeStorage.get_siblingPos

set_siblingPos(self, x)

Overrides: NodeStorage.set_siblingPos

get_data_item(self, i)

Overrides: NodeStorage.get_data_item

set_data_item(self, i, x)

Overrides: NodeStorage.set_data_item

map_data(self)

Overrides: NodeStorage.map_data

setup_data(self, type, rows, cols)

Overrides: NodeStorage.setup_data

resize_data(self, nr, type_if_none)

Overrides: NodeStorage.resize_data

clear_data(self)

Overrides: NodeStorage.clear_data

load_rows(self, first, last, do_read)

Overrides: NodeStorage.load_rows

unload_rows(self, do_write)

Overrides: NodeStorage.unload_rows

read_rows(self, first, last)

Overrides: NodeStorage.read_rows

write_rows(self, first, last, arr)

Overrides: NodeStorage.write_rows

get_rows(self, first, last)

Overrides: NodeStorage.get_rows

read(self)

Overrides: NodeStorage.read

write(self)

Overrides: NodeStorage.write