org.apache.dubbo.rpc.filter

Class CompatibleFilter

java.lang.Object

org.apache.dubbo.rpc.filter.CompatibleFilter

All Implemented Interfaces:

BaseFilter, BaseFilter.Listener, Filter

public class CompatibleFilter
extends Object
implements Filter, BaseFilter.Listener

CompatibleFilter make the remote method's return value compatible to invoker's version of object. To make return object compatible it does

    1)If the url contain serialization key of type json or fastjson then transform
    the return value to instance of Map
    2)If the return value is not a instance of invoked method's return type available at
    local jvm then POJO conversion.
    3)If return value is other than above return value as it is.
 

See Also:

Filter

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.dubbo.rpc.BaseFilter

BaseFilter.Listener

Constructor Summary

Constructors

Constructor and Description
CompatibleFilter()

Method Summary

Modifier and Type	Method and Description
Result	invoke(Invoker<?> invoker, Invocation invocation) Always call invoker.invoke() in the implementation to hand over the request to the next filter node.
void	onError(Throwable t, Invoker<?> invoker, Invocation invocation) This method will be called on detection of framework exceptions, for example, TimeoutException, NetworkException Exception raised in Filters, etc.
void	onResponse(Result appResponse, Invoker<?> invoker, Invocation invocation) This method will only be called on successful remote rpc execution, that means, the service in on remote received the request and the result (normal or exceptional) returned successfully.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CompatibleFilter

public CompatibleFilter()

Method Detail

invoke

public Result invoke(Invoker<?> invoker,
                     Invocation invocation)
              throws RpcException

Description copied from interface: BaseFilter

Always call invoker.invoke() in the implementation to hand over the request to the next filter node.

Specified by:

invoke in interface BaseFilter

Throws:

RpcException

onResponse

public void onResponse(Result appResponse,
                       Invoker<?> invoker,
                       Invocation invocation)

Description copied from interface: BaseFilter.Listener

This method will only be called on successful remote rpc execution, that means, the service in on remote received the request and the result (normal or exceptional) returned successfully.

Specified by:

onResponse in interface BaseFilter.Listener

onError

public void onError(Throwable t,
                    Invoker<?> invoker,
                    Invocation invocation)

Description copied from interface: BaseFilter.Listener

This method will be called on detection of framework exceptions, for example, TimeoutException, NetworkException Exception raised in Filters, etc.

Specified by:

onError in interface BaseFilter.Listener