FoxitPDFSDKforWeb  v10.0.0
Foxit PDF SDK for Web
StorageDriver Interface Reference

Represents a storage driver. More...

Inheritance diagram for StorageDriver:
IndexedDBStorageDriver LocalStorageDriver

Public Member Functions

Promise< void > close ()
 Closes the storage driver. More...
 
pubic Promise< T|null > get< T > (context:StorageContext, key:string)
 Retrieves the value associated with the specified key in the storage space. T The type of the value to retrieve. More...
 
Promise< Record< string, any > > getAll (context:StorageContext)
 Retrieves all the data stored in the specified storage space. More...
 
Function onChange< T > (callback:(event:StorageDriverChangeEvent< T >)=> void)
 Subscribes to storage change events and invokes the callback function whenever a change occurs. T - The type of value. More...
 
Function onRemove (callback:(event:StorageDriverRemoveEvent)=> void)
 Subscribes to storage remove events and invokes the callback function whenever a remove event occurs. More...
 
Promise< void > remove (context:StorageContext, key:string)
 Removes the value associated with the specified key in the storage space. More...
 
Promise< void > removeAll (context:StorageContext)
 Removes all data stored in the specified storage space. More...
 
Promise< void > set< T > (context:StorageContext, key:string, value:T)
 Store/Overwrite the value associated with the specified key in the storage space. T - The type of the value to store. More...
 

Public Attributes

boolean isClosed
 Gets the current status of the storage driver, indicating whether it is closed or not. More...
 

Detailed Description

Represents a storage driver.

Since
9.1.0

Member Function Documentation

◆ close()

Promise<void> StorageDriver::close ( )

Closes the storage driver.

This method is used to perform cleanup operations, such as closing database connections associated with the storage driver. After calling this method, further operations on the storage driver may not be possible until it is reinitialized or recreated. It's important to note that this method does not clear any data stored in the storage system.

Returns
Promise<void> - A Promise that resolves when the storage driver is successfully closed, or rejects with an error if an issue occurs during the closing process.
See also
isClosed
Since
9.2.0

◆ get< T >()

pubic Promise<T|null> StorageDriver::get< T > ( context:StorageContext  ,
key:string   
)

Retrieves the value associated with the specified key in the storage space. T The type of the value to retrieve.

Parameters
contextStorageContext - The storage context, partitioning strategies based on the context's content.
keystring - The key of the value to retrieve.
Returns
Promise<T|null> - A promise that resolves to the retrieved value.
Since
9.1.0

Implemented in IndexedDBStorageDriver, and LocalStorageDriver.

◆ getAll()

Promise<Record<string,any> > StorageDriver::getAll ( context:StorageContext  )

Retrieves all the data stored in the specified storage space.

Parameters
contextStorageContext - The storage context, partitioning strategies based on the context's content.
Returns
Promise<Record<string, any>> - A promise that resolves to all the data stored in the storage space.
Since
9.1.0

Implemented in IndexedDBStorageDriver.

◆ onChange< T >()

Function StorageDriver::onChange< T > ( callback:(event:StorageDriverChangeEvent< T >)  ,
void   
)

Subscribes to storage change events and invokes the callback function whenever a change occurs. T - The type of value.

Parameters
callback(event:StorageDriverChangeEvent<T>)=>void - The callback function to handle storage change events
Returns
()=>void - A function to unsubscribe from the storage change events.
Since
9.1.0

Implemented in IndexedDBStorageDriver, and LocalStorageDriver.

◆ onRemove()

Function StorageDriver::onRemove ( callback:(event:StorageDriverRemoveEvent)  ,
void   
)

Subscribes to storage remove events and invokes the callback function whenever a remove event occurs.

Parameters
callback(event:StorageDriverRemoveEvent)=>void - The callback function to handle storage remove events.
Returns
()=>void - A function to unsubscribe from the storage remove events
Since
9.1.0

Implemented in IndexedDBStorageDriver.

◆ remove()

Promise<void> StorageDriver::remove ( context:StorageContext  ,
key:string   
)

Removes the value associated with the specified key in the storage space.

Parameters
contextStorageContext - The storage context, partitioning strategies based on the context's content.
keystring - The key of the value to remove.
Returns
Promise<void> - A promise that resolves when the value is successfully removed.
Since
9.1.0

Implemented in LocalStorageDriver.

◆ removeAll()

Promise<void> StorageDriver::removeAll ( context:StorageContext  )

Removes all data stored in the specified storage space.

Parameters
contextStorageContext - The storage context, partitioning strategies based on the context's content.
Returns
Promise<void> - A promise that resolves when all data in the storage space is successfully removed.
Since
9.1.0

Implemented in IndexedDBStorageDriver, and LocalStorageDriver.

◆ set< T >()

Promise<void> StorageDriver::set< T > ( context:StorageContext  ,
key:string  ,
value:T   
)

Store/Overwrite the value associated with the specified key in the storage space. T - The type of the value to store.

Parameters
contextStorageContext - The storage context, partitioning strategies based on the context's content.
keystring - The key of the value to store.
valueT - The value to store.
Returns
Promise<void> - A promise that resolves when the value is successfully set.
Since
9.1.0

Implemented in IndexedDBStorageDriver, and LocalStorageDriver.

Member Data Documentation

◆ isClosed

boolean StorageDriver::isClosed

Gets the current status of the storage driver, indicating whether it is closed or not.

See also
close()
Since
9.2.0

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