BaseConnection (cayenne-client: Cayenne ROP Client 4.2 API)

java.lang.Object
- org.apache.cayenne.remote.BaseConnection

All Implemented Interfaces:

ClientConnection

Direct Known Subclasses:

HttpClientConnection, LocalConnection
```
public abstract class BaseConnection
extends Object
implements ClientConnection
```
A common base class for concrete ClientConnection implementations. Provides message logging functionality via slf4j logging.

Since:

1.2

Field Summary

Fields
Modifier and Type Field Description

protected org.slf4j.Logger logger

protected long messageId

Constructor Summary

Constructors
Modifier Constructor Description

protected BaseConnection()
Default constructor that initializes logging and a single threaded EventManager.

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`protected abstract void`	`beforeSendMessage(ClientMessage message)`	Called before logging the beginning of message processing.
`protected abstract Object`	`doSendMessage(ClientMessage message)`	The worker method invoked to process message.
`long`	`getProcessedMessagesCount()`	Returns a count of processed messages since the beginning of life of this connector.
`Object`	`sendMessage(ClientMessage message)`	Invokes 'beforeSendMessage' on self, then invokes 'doSendMessage'.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.cayenne.remote.ClientConnection
getServerEventBridge

- Field Detail
  - logger
```
protected org.slf4j.Logger logger
```
  - messageId
```
protected long messageId
```
- Constructor Detail
  - BaseConnection
```
protected BaseConnection()
```
    Default constructor that initializes logging and a single threaded EventManager.
- Method Detail
  - sendMessage
```
public Object sendMessage(ClientMessage message)
                   throws CayenneRuntimeException
```
    Invokes 'beforeSendMessage' on self, then invokes 'doSendMessage'. Implements basic logging functionality. Do not override this method unless absolutely necessary. Override 'beforeSendMessage' and 'doSendMessage' instead.
    
    Specified by:
    
    sendMessage in interface ClientConnection
    
    Throws:
    
    CayenneRuntimeException
  - getProcessedMessagesCount
```
public long getProcessedMessagesCount()
```
    Returns a count of processed messages since the beginning of life of this connector.
  - beforeSendMessage
```
protected abstract void beforeSendMessage(ClientMessage message)
                                   throws CayenneRuntimeException
```
    Called before logging the beginning of message processing.
    
    Throws:
    
    CayenneRuntimeException
  - doSendMessage
```
protected abstract Object doSendMessage(ClientMessage message)
                                 throws CayenneRuntimeException
```
    The worker method invoked to process message.
    
    Throws:
    
    CayenneRuntimeException