This class is a special Predicate which helps to get a page-by-page result of a query.
             It can be constructed with a page-size, an inner predicate for filtering, and a comparator for sorting.
             
Inheritance Hierarchy
Hazelcast.CorePagingPredicate
Namespace: Hazelcast.Core
Assembly: Hazelcast.Net (in Hazelcast.Net.dll) Version: 3.8.2
Syntax
The PagingPredicate type exposes the following members.
Constructors
| Name | Description | |
|---|---|---|
|  | PagingPredicate | 
            Creates a Paging predicate with provided page size and optional predicate and comparer.
             | 
Properties
| Name | Description | |
|---|---|---|
|  | Comparer | IComparer<KeyValuePair<object, object>>> implementation used to sort the result on client side.
             | 
|  | IterationType | 
            Iteration type this paging predicate: One of Key, Value or Entry
             | 
|  | Page | 
            Current page index
             | 
|  | PageSize | 
            Page size of each iteration
             | 
Methods
| Name | Description | |
|---|---|---|
|  | Equals | (Inherited from Object.) | 
|  | GetFactoryId | |
|  | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) | 
|  | GetId | |
|  | GetNearestAnchorEntry | 
            After each query, an anchor entry is set for that page. SetAnchor``2(Int32, UMP, UMP)
            For the next query user may set an arbitrary Page.
            for example: user queried first 5 pages which means first 5 anchor is available
            if the next query is for the 10th page then the nearest anchor belongs to page 5
            but if the next query is for the 3nd page then the nearest anchor belongs to page 2
             | 
|  | GetType | Gets the Type of the current instance.(Inherited from Object.) | 
|  | NextPage | 
            sets the page value to next page
             | 
|  | PreviousPage | 
            sets the page value to previous page
             | 
|  | ReadData | |
|  | Reset | 
            resets for reuse
             | 
|  | ToString | Returns a string that represents the current object.(Inherited from Object.) | 
|  | WriteData | 
Extension Methods
| Name | Description | |
|---|---|---|
|  | And | (Defined by PredicateExt.) | 
|  | Not | (Defined by PredicateExt.) | 
|  | Or | (Defined by PredicateExt.) | 
Remarks
Examples
Predicate lessEqualThanFour = Predicates.IsLessThanOrEqual("this", 4); // We are constructing our paging predicate with a predicate and page size. In this case query results fetched two by two. PagingPredicate predicate = new PagingPredicate(lessEqualThanFour, 2); // we are initializing our map with integers from 0 to 10 as keys and values. IMap map = hazelcastInstance.getMap("myMap"); for (int i = 0; i < 10; i++) { map.Put(i, i); } //invoking the query var values = map.Values(predicate); Console.WriteLine("values = " + values); // will print 'values = [0, 1]' predicate.NextPage(); // we are setting up paging predicate to fetch next page in the next call. values = map.Values(predicate); Console.WriteLine("values = " + values);// will print 'values = [2, 3]' var anchor = predicate.GetAnchor(); Console.WriteLine("anchor -> " + anchor); // will print 'anchor -> 1=1', since the anchor is the last entry of the previous page. predicate.previousPage(); // we are setting up paging predicate to fetch previous page in the next call values = map.Values(predicate); Console.WriteLine("values = " + values) // will print 'values = [0, 1]'
See Also
