public interface QueryPager
| Modifier and Type | Field and Description |
|---|---|
static QueryPager |
EMPTY |
| Modifier and Type | Method and Description |
|---|---|
PartitionIterator |
fetchPage(int pageSize,
ConsistencyLevel consistency,
ClientState clientState)
Fetches the next page.
|
PartitionIterator |
fetchPageInternal(int pageSize,
ReadOrderGroup orderGroup)
Fetches the next page internally (in other, this does a local query).
|
boolean |
isExhausted()
Whether or not this pager is exhausted, i.e.
|
int |
maxRemaining()
The maximum number of cells/CQL3 row that we may still have to return.
|
ReadOrderGroup |
startOrderGroup()
Starts a new read operation.
|
PagingState |
state()
Get the current state of the pager.
|
static final QueryPager EMPTY
PartitionIterator fetchPage(int pageSize, ConsistencyLevel consistency, ClientState clientState) throws RequestValidationException, RequestExecutionException
pageSize - the maximum number of elements to return in the next page.consistency - the consistency level to achieve for the query.clientState - the ClientState for the query. In practice, this can be null unless
consistency is a serial consistency.RequestValidationExceptionRequestExecutionExceptionReadOrderGroup startOrderGroup()
This must be called before fetchPageInternal and passed to it to protect the read.
The returned object must be closed on all path and it is thus strongly advised to
use it in a try-with-ressource construction.
QueryPager.PartitionIterator fetchPageInternal(int pageSize, ReadOrderGroup orderGroup) throws RequestValidationException, RequestExecutionException
pageSize - the maximum number of elements to return in the next page.orderGroup - the ReadOrderGroup protecting the read.RequestValidationExceptionRequestExecutionExceptionboolean isExhausted()
int maxRemaining()
PagingState state()
Copyright © 2015 The Apache Software Foundation