RoutingFetcher

All Implemented Interfaces:

org.readium.r2.shared.fetcher.Fetcher , org.readium.r2.shared.util.SuspendingCloseable
```
public final class RoutingFetcher
 implements Fetcher
                    
```
Routes requests to child fetchers, depending on a provided predicate.
This can be used for example to serve a publication containing both local and remote resources, and more generally to concatenate different content sources.
The routes will be tested in the given order.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`public final class`	`RoutingFetcher.Route`	Holds a child fetcher and the predicate used to determine if it can answer a request. The default value for accepts means that the fetcher will accept any link.

Field Summary

Fields
Modifier and Type	Field	Description

Constructor Summary

Constructors
Constructor	Description
`RoutingFetcher(Fetcher local, Fetcher remote)`
`RoutingFetcher(List<RoutingFetcher.Route> routes)`

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`List<Link>`	`links()`	Known resources available in the medium, such as file paths on the file system or entries in a ZIP archive.
`Resource`	`get(Link link)`	Returns the Resource at the given link's HREF.
`Unit`	`close()`	Closes this object and releases any resources associated with it.

Methods inherited from class org.readium.r2.shared.fetcher.Fetcher
get
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - RoutingFetcher
```
RoutingFetcher(Fetcher local, Fetcher remote)
```
  - RoutingFetcher
```
RoutingFetcher(List<RoutingFetcher.Route> routes)
```
- Method Detail
  - links
```
 List<Link> links()
```
    Known resources available in the medium, such as file paths on the file system or entries in a ZIP archive. This list is not exhaustive, and additional unknown resources might be reachable.
    If the medium has an inherent resource order, it should be followed. Otherwise, HREFs are sorted alphabetically.
  - get
```
 Resource get(Link link)
```
    Returns the Resource at the given link's HREF.
    A Resource is always returned, since for some cases we can't know if it exists before actually fetching it, such as HTTP. Therefore, errors are handled at the Resource level.
  - close
```
 Unit close()
```
    Closes this object and releases any resources associated with it. If the object is already closed then invoking this method has no effect.