harmony 鸿蒙data_asset.h

2025-06-12
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data_asset.h

Overview

Defines data asset structs.

Asset is a data struct used in data management. You can use it to set and obtain file properties, including the name, absolute path, relative path, creation time, modification time, status, and size of a file.

File to include:

Library: libnative_rdb_ndk.z.so

Since: 11

Related module: Data

Summary

Types

Name	Description
Data_AssetStatus	Defines an enum for data asset statuses.
Data_Asset	Defines a struct for an asset.

Enums

Name	Description
Data_AssetStatus { ASSET_NULL = 0, ASSET_NORMAL, ASSET_INSERT, ASSET_UPDATE, ASSET_DELETE, ASSET_ABNORMAL, ASSET_DOWNLOADING }	Enumerates data asset statuses.

Functions

Name	Description
OH_Data_Asset_SetName (Data_Asset asset, const char name)	Sets the name of an asset.
OH_Data_Asset_SetUri (Data_Asset asset, const char uri)	Sets the absolute path (URI) of an asset in the system.
OH_Data_Asset_SetPath (Data_Asset asset, const char path)	Sets the relative path of an asset in the application sandbox directory.
OH_Data_Asset_SetCreateTime (Data_Asset *asset, int64_t createTime)	Sets the creation time for an asset.
OH_Data_Asset_SetModifyTime (Data_Asset *asset, int64_t modifyTime)	Sets the last modification time for an asset.
OH_Data_Asset_SetSize (Data_Asset *asset, size_t size)	Sets the size of an asset.
OH_Data_Asset_SetStatus (Data_Asset *asset, Data_AssetStatus status)	Sets the status of an asset.
OH_Data_Asset_GetName (Data_Asset asset, char name, size_t *length)	Obtains the name of an asset.
OH_Data_Asset_GetUri (Data_Asset asset, char uri, size_t *length)	Obtains the absolute path of an asset.
OH_Data_Asset_GetPath (Data_Asset asset, char path, size_t *length)	Obtains the relative path of an asset.
OH_Data_Asset_GetCreateTime (Data_Asset asset, int64_t createTime)	Obtains the creation time of an asset.
OH_Data_Asset_GetModifyTime (Data_Asset asset, int64_t modifyTime)	Obtains the last modification time of an asset.
OH_Data_Asset_GetSize (Data_Asset asset, size_t size)	Obtains the space occupied by an asset.
OH_Data_Asset_GetStatus (Data_Asset asset, Data_AssetStatus status)	Obtains the status of an asset.
OH_Data_Asset_CreateOne ()	Creates a Data_Asset instance.
OH_Data_Asset_DestroyOne (Data_Asset *asset)	Destroys a Data_Asset instance.
OH_Data_Asset_CreateMultiple (uint32_t count)	Creates multiple Data_Asset instances.
OH_Data_Asset_DestroyMultiple (Data_Asset **assets, uint32_t count)	Destroys multiple Data_Asset instances.