oh_data_values_buckets.h
Overview
Defines structs, APIs, and enums related to stored data values.
File to include: <database/data/oh_data_values_buckets.h>
Library: libnative_rdb_ndk.z.so
System capability: SystemCapability.DistributedDataManager.RelationalStore.Core
Since: 18
Related module: RDB
Summary
Structs
| Name | typedef Keyword | Description |
|---|---|---|
| OH_Data_VBuckets | OH_Data_VBuckets | Defines the OH_Data_VBuckets struct. |
Functions
| Name | Description |
|---|---|
| OH_Data_VBuckets *OH_VBuckets_Create(void) | Creates an OH_Data_VBuckets instance. |
| int OH_VBuckets_Destroy(OH_Data_VBuckets *buckets) | Destroys an OH_Data_VBuckets instance. |
| int OH_VBuckets_PutRow(OH_Data_VBuckets *buckets, const OH_VBucket *row) | Adds data of the OH_VBucket type to an OH_Data_VBuckets instance. |
| int OH_VBuckets_PutRows(OH_Data_VBuckets *buckets, const OH_Data_VBuckets *rows) | Adds data of the OH_Data_VBuckets type to an OH_Data_VBuckets instance. |
| int OH_VBuckets_RowCount(OH_Data_VBuckets *buckets, size_t *count) | Obtains the number of OH_VBuckets in an OH_Data_VBuckets instance. |
Function Description
OH_VBuckets_Create()
OH_Data_VBuckets *OH_VBuckets_Create(void)
Description
Creates an OH_Data_VBuckets instance.
Since: 18
Returns
| Type | Description |
|---|---|
| OH_Data_VBuckets | Returns a pointer to the OH_Data_VBuckets instance if the operation is successful; returns nullptr otherwise. Use OH_VBuckets_Destroy to release the memory in time. |
OH_VBuckets_Destroy()
int OH_VBuckets_Destroy(OH_Data_VBuckets *buckets)
Description
Destroys an OH_Data_VBuckets instance.
Since: 18
Parameters
| Name | Description |
|---|---|
| OH_Data_VBuckets *buckets | Pointer to the OH_Data_VBuckets instance. |
Returns
| Type | Description |
|---|---|
| int | Returns an error code. RDB_OK indicates the operation is successful. RDB_E_INVALID_ARGS indicates that invalid parameters are specified. |
OH_VBuckets_PutRow()
int OH_VBuckets_PutRow(OH_Data_VBuckets *buckets, const OH_VBucket *row)
Description
Adds data of the OH_VBucket type to an OH_Data_VBuckets instance.
Since: 18
Parameters
| Name | Description |
|---|---|
| OH_Data_VBuckets *buckets | Pointer to the OH_Data_VBuckets instance. |
| const OH_VBucket *row | Pointer to the OH_VBucket instance. |
Returns
| Type | Description |
|---|---|
| int | Returns an error code. RDB_OK indicates the operation is successful. RDB_E_INVALID_ARGS indicates that invalid parameters are specified. |
OH_VBuckets_PutRows()
int OH_VBuckets_PutRows(OH_Data_VBuckets *buckets, const OH_Data_VBuckets *rows)
Description
Adds data of the OH_Data_VBuckets type to an OH_Data_VBuckets instance.
Since: 18
Parameters
| Name | Description |
|---|---|
| OH_Data_VBuckets *buckets | Pointer to the OH_Data_VBuckets instance. |
| const OH_Data_VBuckets *rows | Pointer to the OH_Data_VBuckets instance. |
Returns
| Type | Description |
|---|---|
| int | Returns an error code. RDB_OK indicates the operation is successful. RDB_E_INVALID_ARGS indicates that invalid parameters are specified. |
OH_VBuckets_RowCount()
int OH_VBuckets_RowCount(OH_Data_VBuckets *buckets, size_t *count)
Description
Obtains the number of OH_VBuckets in an OH_Data_VBuckets instance.
Since: 18
Parameters
| Name | Description |
|---|---|
| OH_Data_VBuckets *buckets | Pointer to the OH_Data_VBuckets instance. |
| size_t *count | Pointer to the number of OH_VBuckets in an OH_Data_VBuckets instance. |
Returns
| Type | Description |
|---|---|
| int | Returns an error code. RDB_OK indicates the operation is successful. RDB_E_INVALID_ARGS indicates that invalid parameters are specified. |
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