Readable

All Implemented Interfaces:

org.readium.r2.shared.util.SuspendingCloseable
```
public interface Readable
 implements SuspendingCloseable
                    
```
Acts as a proxy to an actual data source by handling read access.

Method Summary

Modifier and Type	Method	Description
`abstract Try<Long, ReadError>`	`length()`	Returns data length from metadata if available, or calculated from reading the bytes otherwise.
`abstract Try<ByteArray, ReadError>`	`read(LongRange range)`	Reads the bytes at the given range.

Methods inherited from class org.readium.r2.shared.util.data.Readable
close
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - length
```
 abstract Try<Long, ReadError> length()
```
    Returns data length from metadata if available, or calculated from reading the bytes otherwise.
    This value must be treated as a hint, as it might not reflect the actual bytes length. To get the real length, you need to read the whole resource.
  - read
```
 abstract Try<ByteArray, ReadError> read(LongRange range)
```
    Reads the bytes at the given range.
    When range is null, the whole content is returned. Out-of-range indexes are clamped to the available length automatically.