netty5/common/src/main/java/io/netty/util/AttributeMap.java

package io.netty.util;

public interface AttributeMap {
    <T> Attribute<T> attr(AttributeKey key, Class<T> type);
}
Revamp channel handler API - Merged LifeCycleAwareChannelHandler into ChannelHandler - Replaced ChannelUpstreamHandler and ChannelDownstreamHandler with ChannelReader and ChannelWriter - These two new interfaces are much more type-safe than its ancestor. - Simplified channel state model as described in #68 - Handler creates send/receive buffer. - Previously, Netty created them, but it led to more memory copies and inflexibility. I'm going to allow a handler to create a bounded queue for example. - It currently uses Queue<T> but I'll define a new interface and make ChannelBuffer implement it (e.g. Queue<Byte>) - Introduced AttributeMap which replaces attachments in Channel and ChannelHandlerContext and ChannelLocal 2012-04-12 10:39:01 +02:00			`package io.netty.util;`

			`public interface AttributeMap {`
			`<T> Attribute<T> attr(AttributeKey key, Class<T> type);`
			`}`