harmony 鸿蒙oh_cursor.h

oh_cursor.h

Provides APIs to access the result set obtained by querying the RDB store.

A result set is a set of results returned by query().

File to include:

Library: libnative_rdb_ndk.z.so

Since: 10

Related module: RDB

Name	Description
OH_Cursor	Defines a result set.

Name	Description
typedef struct OH_Cursor OH_Cursor	Defines a result set.

Name	Description
int OH_Cursor_GetFloatVectorCount (OH_Cursor cursor, int32_t columnIndex, size_t length)	Obtains the length of a floating-point array in the specified column of the current row.
int OH_Cursor_GetFloatVector (OH_Cursor cursor, int32_t columnIndex, float val, size_t inLen, size_t *outLen)	Obtains the value in the specified column of the current row in the form of a floating-point array.