DefaultCacheManager class

The DefaultCacheManager that can be easily used directly. The code of this implementation can be used as inspiration for more complex cache managers.

Inheritance

Constructors

DefaultCacheManager()
factory

Properties

hashCode int
The hash code for this object. [...]
read-only, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
store → CacheStore
Get the underlying store helper
read-only, inherited
webHelper → WebHelper
Get the underlying web helper
read-only, inherited

Methods

dispose() Future<void>
Closes the cache database
inherited
downloadFile(String url, {String key, Map<String, String> authHeaders, bool force: false}) Future<FileInfo>
Download the file and add to cache
inherited
emptyCache() Future<void>
Removes all files from the cache
inherited
getFile(String url, {String key, Map<String, String> headers}) Stream<FileInfo>
Get the file from the cache and/or online, depending on availability and age. Downloaded form url, headers can be used for example for authentication. The files are returned as stream. First the cached file if available, when the cached file is too old the newly downloaded file is returned afterwards.
@Deprecated('Prefer to use the new getFileStream method'), inherited
getFileFromCache(String key, {bool ignoreMemCache: false}) Future<FileInfo>
Get the file from the cache. Specify ignoreMemCache to force a re-read from the database
inherited
getFileFromMemory(String key) Future<FileInfo>
Returns the file from memory if it has already been fetched
inherited
getFileStream(String url, {String key, Map<String, String> headers, bool withProgress}) Stream<FileResponse>
Get the file from the cache and/or online, depending on availability and age. Downloaded form url, headers can be used for example for authentication. The files are returned as stream. First the cached file if available, when the cached file is too old the newly downloaded file is returned afterwards. [...]
inherited
getSingleFile(String url, {String key, Map<String, String> headers}) Future<File>
Get the file from the cache and/or online, depending on availability and age. Downloaded form url, headers can be used for example for authentication. When a file is cached it is return directly, when it is too old the file is downloaded in the background. When a cached file is not available the newly downloaded file is returned.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
putFile(String url, Uint8List fileBytes, {String key, String eTag, Duration maxAge: const Duration(days: 30), String fileExtension: 'file'}) Future<File>
Put a file in the cache. It is recommended to specify the eTag and the maxAge. When maxAge is passed and the eTag is not set the file will always be downloaded again. The fileExtension should be without a dot, for example "jpg". When cache info is available for the url that path is re-used. The returned File is saved on disk.
inherited
putFileStream(String url, Stream<List<int>> source, {String key, String eTag, Duration maxAge: const Duration(days: 30), String fileExtension: 'file'}) Future<File>
Put a byte stream in the cache. When using an existing file you can use file.openRead(). It is recommended to specify the eTag and the maxAge. When maxAge is passed and the eTag is not set the file will always be downloaded again. The fileExtension should be without a dot, for example "jpg". When cache info is available for the url that path is re-used. The returned File is saved on disk.
inherited
removeFile(String key) Future<void>
Remove a file from the cache
inherited
toString() String
Returns a string representation of this object.
inherited

Operators

operator ==(Object other) bool
The equality operator. [...]
inherited

Constants

key → const String
'libCachedImageData'