Spring Data MongoDB Paging Query

Paging query on the basis of the previous article Spring Data MongoDB Environment defines a common paging parameter class that implements the Pageable interface

Import java.io.Serializable;
Import org.springframework.data.domain.Pageable;

Import Org.springframework.data.domain.Sort;
    public class Springdatapageable implements Serializable, pageable {private static final long serialversionuid = 1;
    Current page Private Integer pagenumber = 1;
    The current number of page bars private Integer pagesize = 10;

    Sort criteria private sort sort;
    Current page @Override public int getpagenumber () {return getpagenumber ();
    }//Each page shows the number of bars @Override public int getpagesize () {return getpagesize ();
    }//The number of additions required for the second page @Override public int getoffset () {return (Getpagenumber ()-1) * getpagesize ();
    } @Override Public Sort Getsort () {return sort;
    } public Integer Getpagenumber () {return pagenumber;
    } public void Setpagenumber (Integer pagenumber) {this.pagenumber = pagenumber;
    } public Integer GetPageSize () {return pagesize;

}    public void SetPageSize (Integer pagesize) {this.pagesize = pagesize;
    } public void Setsort (sort sort) {this.sort = sort;
    } @Override Public pageable First () {//TODO auto-generated method stub return null;
    } @Override public Boolean hasprevious () {//TODO auto-generated method stub return false;
    } @Override public pageable next () {//TODO auto-generated method stub return null;
    } @Override public pageable Previousorfirst () {//TODO auto-generated method stub return null; }
}

Interface Persondao

/** *
 Paging query
 * @param pagenum  Start Page
 * @return *
 /public
page<person> Paginationquery ( Integer pagenum);

Interface Implementation Persondaoimpl

Public page<person> paginationquery (Integer pagenum) {

    springdatapageable pageable = new Springdatapageable ( );
    Query query = new query ();
    list<order> orders = new arraylist<order> ();  Sort
    Orders.add (New Order (Direction.desc, "age"));
    Sort sort = new sort (orders);

    Start Page
    pageable.setpagenumber (pagenum);
    Number of pages per page
    pageable.setpagesize (ten);
    Sorting
    pageable.setsort (sort);
    Query out the total number of bars
    Long count = Mongotemplate.count (query, person.class);
    Query
    list<person> List = Mongotemplate.find (Query.with (pageable), person.class);
    Encapsulates a collection with a paged result
    page<person> pagelist = new pageimpl<person> (list, pageable, count);

    return pagelist;
}

Test

/**
 * Paged Query *
/@Test public
void Paginationquery () {
    page<person> persons = Persondao.paginationquery (2);
    for (person p:persons) {
        System.out.println (P.getname ());
    }
}

Author: itmyhome