AssetLoader class abstract

A skeletal implementation of ResourceLoader that utilizes AssetCache and supports all HTTP requirements such as partial content, multi-part loading, ETag and more.

To implement your own loader, you can do the follows:

  1. Implements Asset to load your asset.
  2. Extends AssetLoader and override getAsset to return the Asset object you implemented for the given path.

Note: rootDir is not used in AssetLoader. Whether it is meaningful depends on how getAsset is implemented in derives.

Implemented types
Implementers

Constructors

AssetLoader()

Properties

cache ↔ AssetCache
The cache. *
getter/setter pair
cacheSize ↔ int
The total cache size (unit: bytes). Default: 3 * 1024 * 1024.
getter/setter pair
cacheThreshold ↔ int
The thread hold (unit: bytes) to cache. Only resources less than this size
getter/setter pair
hashCode → int
The hash code for this object.
no setterinherited
rootDir → String
The root directory.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
useETag ↔ bool
Whether to generate the ETag header. Default: true.
getter/setter pair
useExpires ↔ bool
Whether to generate the Expires and max-age headers. Default: true.
getter/setter pair

Methods

getAsset(String path) → Asset
Returns the Asset instance representing path. *
getETag(Asset asset, DateTime lastModified, int assetSize) → String?
Returns the value of the ETag header.
getExpires(Asset asset) → Duration?
Returns the duration for the Expires and max-age headers.
load(HttpConnect connect, String uri, {bool useCache = true}) → Future
Loads the asset of the given URI to the given response.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
shallCache(Asset asset, int assetSize) → bool
Whether the given asset shall be cached. *
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited