Package org.elasticsearch.common.io.stream

Interface Writeable.Writer<V>

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.Writer<V>
Reference to a method that can write some object to a StreamOutput.

By convention this is a method from StreamOutput itself (e.g., StreamOutput.writeString(java.lang.String)). If the value can be null, then the "optional" variant of methods should be used!

Most classes should implement Writeable and the Writeable.writeTo(StreamOutput) method should use StreamOutput methods directly or this indirectly: 


 public void writeTo(StreamOutput out) throws IOException {
     out.writeVInt(someValue);
     out.writeMapOfLists(someMap, StreamOutput::writeString, StreamOutput::writeString);
 }

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    write​(StreamOutput out, V value)
    Write V-type value to the output stream.

  • Method Details

    • write

      void write​(StreamOutput out, V value) throws IOException
      Write V-type value to the output stream.
      Parameters:
      out - Output to write the value too
      value - The value to add
      Throws:
      IOException