VDKXTableIndex Class Reference

Provides a table index. More...

#include <vdkxtable.h>

List of all members.

Public Member Functions

• VDKXTableIndex (VDKXTable *owner, char *s)
• virtual ~VDKXTableIndex ()

  Destructor.
  

• xbShort Create (char *key, bool unique=true, bool overwrite=false)
• xbShort Open (void)

  Open index.
  

• xbShort Close (void)
• VDKString Name ()

  return index name
  

• VDKString Key ()

  return index key
  

• bool IsOpen ()

  return if index is open or not
  

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Detailed Description

Provides a table index.

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Constructor & Destructor Documentation

VDKXTableIndex::VDKXTableIndex	(	VDKXTable *	owner,
		char *	s
	)

Constructor

Parameters:

owner	VDKXtable that owns index
s	index file name

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Member Function Documentation

xbShort VDKXTableIndex::Close

(

void

)

Close index.

• Programming note: Isn't necessary to explicitely close an index, closing the table will close all associated indexes as well.

xbShort VDKXTableIndex::Create	(	char *	key,
		bool	unique = true,
		bool	overwrite = false
	)

Creates an index

Parameters:

k	index key (can be an expression as well)
unique	if true allows duplicated keys
overwrite	if true and table exist will be truncated and overwritten. Returns: XB_NO_ERROR no errors XB_OPEN_ERROR couldn't open file XB_NO_MEMORY mem allocation error XB_READ_ERROR couldn't read on device XB_INVALID_KEY_EXPRESSION bad index key expression XB_SEEK_ERROR seek error encountered XB_NOT_OPEN database wasn't opened

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

• vdkxtable.h
• vdkxtable.cc