Writeable.Reader (server 7.5.2 API)

All Known Subinterfaces:

TransportResponseHandler<T>

All Known Implementing Classes:

ActionListenerResponseHandler, EmptyTransportResponseHandler, FutureTransportResponseHandler, PlainTransportFuture, TransportService.ContextRestoreResponseHandler

Enclosing interface:

Writeable

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public static interface Writeable.Reader<V>
```
Reference to a method that can read some object from a stream. By convention this is a constructor that takes StreamInput as an argument for most classes and a static method for things like enums. Returning null from one of these is always wrong - for that we use methods like StreamInput.readOptionalWriteable(Reader).
As most classes will implement this via a constructor (or a static method in the case of enumerations), it's something that should look like:
```
 public MyClass(final StreamInput in) throws IOException {
     this.someValue = in.readVInt();
     this.someMap = in.readMapOfLists(StreamInput::readString, StreamInput::readString);
 }
 
```

- Method Summary
  
  Modifier and Type Method Description
  
  V read(StreamInput in)
  Read V-type value from a stream.

- Method Detail
  - read
```
V read(StreamInput in)
throws java.io.IOException
```
    Read V-type value from a stream.
    
    Parameters:
    
    in - Input to read the value from
    
    Throws:
    
    java.io.IOException