Module io.netty5.buffer

Package io.netty5.buffer.api

Interface ComponentIterator<T extends ComponentIterator.Next>

Type Parameters:

T - A type that implements ComponentIterator.Next, and either ReadableComponent or WritableComponent.

All Superinterfaces:

AutoCloseable, SafeCloseable

All Known Implementing Classes:

SingleComponentIterator

public interface ComponentIterator<T extends ComponentIterator.Next>
extends SafeCloseable

A facade for iterating the readable or writable components of a Buffer. Note: the iterator object must be closed after use. The easiest way to ensure this, is to use a try-with-resources clause.

The typical code pattern for using this API looks like the following:

      try (var iteration = buffer.forEachReadable()) {
          for (var c = iteration.first(); c != null; c = c.next()) {
              ByteBuffer componentBuffer = c.readableBuffer();
              // ...
          }
      }
 

Note the use of the var keyword for local variables, which are required for correctly expressing the generic types used in the iteration. Following this code pattern will ensure that the components, and their parent buffer, will be correctly life-cycled.

See Also:

Buffer.forEachReadable(), Buffer.forEachWritable()

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	ComponentIterator.Next	This interface exposes external iteration on components.

Method Summary

Modifier and Type	Method	Description
T	first()	Get the first component of the iteration, or null if there are no components.

Methods inherited from interface io.netty5.util.SafeCloseable

close

Method Detail

first

T first()

Get the first component of the iteration, or null if there are no components.

The object returned will implement both ComponentIterator.Next, and one of the ReadableComponent or WritableComponent interfaces.

Returns:

The first component of the iteration, or null if there are no components.