FilterSubscription (Red Hat Data Grid 7.3.9 API)

```
public interface FilterSubscription
```
A subscription for match notifications.

Since:

7.0

Author:

anistor@redhat.com

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`FilterCallback`	`getCallback()`	The associated callback that is being notified of successful matches.
`Comparator<Comparable[]>`	`getComparator()`	The comparator corresponding to the 'order by' clause, if any.
`String`	`getEntityTypeName()`	The fully qualified entity type name accepted by this filter.
`Object[]`	`getEventTypes()`	The event types.
`String[]`	`getProjection()`	The array of '.' separated path names of the projected fields if any, or `null` otherwise.
`SortField[]`	`getSortFields()`	The array of sort specifications if defined, or `null` otherwise.
`boolean`	`isDeltaFilter()`

- Method Detail
  - getEntityTypeName
```
String getEntityTypeName()
```
    The fully qualified entity type name accepted by this filter.
  - getCallback
```
FilterCallback getCallback()
```
    The associated callback that is being notified of successful matches.
  - isDeltaFilter
```
boolean isDeltaFilter()
```
  - getProjection
```
String[] getProjection()
```
    The array of '.' separated path names of the projected fields if any, or null otherwise.
  - getSortFields
```
SortField[] getSortFields()
```
    The array of sort specifications if defined, or null otherwise.
  - getComparator
```
Comparator<Comparable[]> getComparator()
```
    The comparator corresponding to the 'order by' clause, if any.
    
    Returns:
    
    the Comparator or null if no 'order by' was specified
  - getEventTypes
```
Object[] getEventTypes()
```
    The event types.
    
    Returns:
    
    the array of event types or null