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BtIndex Class
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Purpose
Strongly typed class that holds the index information
Prototype
CLASS BtIndex
Access
Method
| BuildExpression() | This method will build a key expression based on the index segments and their fields |
| Init() | Constructor of BtIndex Class |
| SetKeyValues() | This method will convert the VO Key values to btrieve Key values |
Description
This class is used by the BtTable class to store information about its indexes
Source Code
CLASS BtIndex
EXPORT nOrder AS WORD // Order number
EXPORT aSegments AS ARRAY // Array of index segments in this array
EXPORT nFlags AS WORD // Index Flags
EXPORT oTable AS BtTable // Work area object
EXPORT nKeySize AS DWORD // Total Size of Key
EXPORT cExpression AS STRING // String representation of Key expression
EXPORT cName AS STRING // Index name (optional)
EXPORT ptrKeyInfo AS PTR // Pointer to key information in Work Areas Stat
// Structure
EXPORT aScopeTop AS ARRAY // Top Scope Values
EXPORT aScopeBot AS ARRAY // Bottom Scope Values
DECLARE METHOD SetKeyValues
See Also