public final class RpcUtil extends Object
Modifier and Type | Class and Description |
---|---|
static class |
RpcUtil.AlreadyCalledException
Exception thrown when a one-time callback is called more than once.
|
Modifier and Type | Method and Description |
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static <Type extends Message> |
generalizeCallback(RpcCallback<Type> originalCallback,
Class<Type> originalClass,
Type defaultInstance)
Take an
RpcCallback accepting a specific message type and convert
it to an RpcCallback<Message> . |
static <ParameterType> |
newOneTimeCallback(RpcCallback<ParameterType> originalCallback)
Creates a callback which can only be called once.
|
static <Type extends Message> |
specializeCallback(RpcCallback<Message> originalCallback)
Take an
RpcCallback<Message> and convert it to an
RpcCallback accepting a specific message type. |
public static <Type extends Message> RpcCallback<Type> specializeCallback(RpcCallback<Message> originalCallback)
RpcCallback<Message>
and convert it to an
RpcCallback
accepting a specific message type. This is always
type-safe (parameter type contravariance).public static <Type extends Message> RpcCallback<Message> generalizeCallback(RpcCallback<Type> originalCallback, Class<Type> originalClass, Type defaultInstance)
RpcCallback
accepting a specific message type and convert
it to an RpcCallback<Message>
. The generalized callback will
accept any message object which has the same descriptor, and will convert
it to the correct class before calling the original callback. However,
if the generalized callback is given a message with a different descriptor,
an exception will be thrown.public static <ParameterType> RpcCallback<ParameterType> newOneTimeCallback(RpcCallback<ParameterType> originalCallback)
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