public abstract class AbstractOfflineAwareCacheHandler extends AbstractRestCacheHandler
IOperationCacheHandler that
changes behavior depending on the connection status (online/offline).
The application needs to implements the isOnline() method to
determine when the backend is available and the operation should be executed.
| Constructor and Description |
|---|
AbstractOfflineAwareCacheHandler() |
AbstractOfflineAwareCacheHandler(java.lang.String mimeType,
java.lang.String encoding) |
| Modifier and Type | Method and Description |
|---|---|
void |
beforeOperationExecution(IOperation operation)
Is invoked before the operation itself is started with
IOperation#internalExecute(). |
abstract boolean |
isOnline() |
void |
onOperationFinished(IOperation operation)
Notifies this listener that the watched
IOperation finished. |
boolean |
skipOperationExecution(IOperation operation) |
afterOperationExecution, getCacheManagersetCacheManageronOperationSuccessfulonOperationFailedequals, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitonOperationFailedpublic AbstractOfflineAwareCacheHandler()
public AbstractOfflineAwareCacheHandler(java.lang.String mimeType,
java.lang.String encoding)
public void beforeOperationExecution(IOperation operation)
IOperationCacheHandlerIOperation#internalExecute(). Can be used to read some data from
the cache and set it into the operation.beforeOperationExecution in interface IOperationCacheHandlerbeforeOperationExecution in class NoCacheHandlerpublic boolean skipOperationExecution(IOperation operation)
skipOperationExecution in interface IOperationCacheHandlerskipOperationExecution in class NoCacheHandlerIOperation should be
skipped, e.g. if the result is offline and the operation will
fail anyway (with a costly timeout).public void onOperationFinished(IOperation operation)
IOperationDelegateIOperation finished. IOperation.getResultCode() to validate the success of the
operation. E.g. for a remote operation:
switch (operation.getResultCode()) {
case HttpConnection.HTTP_OK:
break;
case HttpConnection.HTTP_FORBIDDEN:
break;
}
onOperationFinished in interface IOperationDelegateonOperationFinished in class AbstractRestCacheHandleroperation - The watched IOperation.public abstract boolean isOnline()
true if the app is currently online and the required
backend is available, the operation will be executed;
false otherwise, the operation will be skipped