The constant set contains possible modes to open an element. More...

Variables
const long	READ = 1
	specifies opening of an element for reading. More...

const long	SEEKABLE = 2
	specifies opening of a seekable element. More...

const long	SEEKABLEREAD = 3
	specifies opening of a seekable element for reading. More...

const long	WRITE = 4
	specifies opening of an element for writing. More...

const long	READWRITE = 7
	specifies opening of an element for reading and writing. More...

const long	TRUNCATE = 8
	lets the document be truncated immediately after opening. More...

const long	NOCREATE = 16
	restricts creation of a new element on opening in case a requested one does not exist. More...

Detailed Description

The constant set contains possible modes to open an element.

The modes can be combined by "or" operation. ElementModes::READ and ElementModes::WRITE are base modes. A result mode must include one of base modes.

Variable Documentation

const long NOCREATE = 16

restricts creation of a new element on opening in case a requested one does not exist.

This flag makes sense only in combination with ElementModes::WRITE.

const long READ = 1

specifies opening of an element for reading.

const long READWRITE = 7

specifies opening of an element for reading and writing.

For a stream element is also specifies that it must be seekable.

const long SEEKABLE = 2

specifies opening of a seekable element.

This mode is ignored for Storage elements. This flag makes sense only in combination with ElementModes::READ and/or ElementModes::WRITE.

const long SEEKABLEREAD = 3

specifies opening of a seekable element for reading.

This is just a combination of the previous two values. For storages it is the same as ElementModes::READ.

const long TRUNCATE = 8

lets the document be truncated immediately after opening.

This flag makes sense only in combination with ElementModes::WRITE.

const long WRITE = 4

specifies opening of an element for writing.