Motivation:
Make @sharable annotation works with anonymous inner types. Add Java 8 ElementType.TYPE_USE feature that makes easy to use @sharable annotation.
Modification:
transport/src/main/java/io/netty/channel/ChannelHandler.java - Target ElementType.TYPE_USE added.
transport/src/main/java/io/netty/channel/ChannelHandlerAdapter.java - isSharable method improved to verify AnnotatedSuperclass for annotation.
transport/src/test/java/io/netty/channel/ChannelHandlerAdapterTest.java - Tests added.
Result:
ChannelInboundHandler handler = new @Sharable ChannelInboundHandlerAdapter() {
@Override
public void channelRead(ChannelHandlerContext context, Object message) {
context.write(message);
}
};
Note:
The following changes don't support local variable annotation:
ChannelInboundHandler handler1 = new @sharable ChannelInboundHandlerAdapter();
@sharable ChannelInboundHandler handler2 = new ChannelInboundHandlerAdapter();
Fixes#7756
4b7e5c96b4