Page code of jsp hibernate page 1/3

It can be seen that Hibernate is very flexible in querying pages. Hibernate will first try the paging SQL of a specific database. If not, try Scrollable again. If not, finally, rset is used. next.
(1) pager class
* @ (#) Pager. java 2005-5-3
*
* Copyright (c) 2005, Jeffrey Hsu
*/
Package com. jeffrey. messagelove;
/**
* Pager holds the page info.
*/
Public class Pager {
Private int totalRows = 0; // total number of records
Private int totalPages = 0; // total number of pages
Private int pageSize = 10; // The number of data entries per page. The default value is 10.
Private int currentPage = 1; // current page number
Private boolean hasPrevious = false; // whether the previous page exists
Private boolean hasNext = false; // whether the next page exists
Public Pager (){
}
/**
* Initialize Pager
* @ Param totalRows total record rows
* @ Param pageSize total record is hold by every page
*/
Public void init (int totalRows, int pageSize ){
This. totalRows = totalRows;
This. pageSize = pageSize;
TotalPages = (totalRows + pageSize)-1)/pageSize;
Refresh (); // refresh the current page
}
/**
* @ Return Returns the currentPage.
*/
Public int getCurrentPage (){
Return currentPage;
}
/**
* @ Param currentPage current page
*/
Public void setCurrentPage (int currentPage ){
This. currentPage = currentPage;
Refresh ();
}
/**
* @ Return Returns the pageSize.
*/
Public int getPageSize (){
Return pageSize;
}
/**
* @ Param pageSize The pageSize to set.
*/
Public void setPageSize (int pageSize ){
This. pageSize = pageSize;
Refresh ();
}
/**
* @ Return Returns the totalPages.
*/
Public int getTotalPages (){
Return totalPages;
}
/**
* @ Param totalPages The totalPages to set.
*/
Public void setTotalPages (int totalPages ){
This. totalPages = totalPages;
Refresh ();
}
/**
* @ Return Returns the totalRows.
*/
Public int getTotalRows (){
Return totalRows;
}
/**
* @ Param totalRows The totalRows to set.
*/
Public void setTotalRows (int totalRows ){
This. totalRows = totalRows;
Refresh ();
}
// Jump to the first page
Public void first (){
CurrentPage = 1;
This. setHasPrevious (false );
Refresh ();
}
// Retrieve the previous page (reset the current page)
Public void previous (){
CurrentPage --;
Refresh ();
}
// Get the next page
Public void next (){
System. out. println ("next: totalPages:" + totalPages +
"CurrentPage:" + currentPage );
If (currentPage <totalPages ){
CurrentPage ++;
}
Refresh ();
}
// Jump to the last page
Public void last (){
CurrentPage = totalPages;
This. setHasNext (false );
Refresh ();
}
Public boolean isHasNext (){
Return hasNext;
}
/**
* @ Param hasNext The hasNext to set.
*/
Public void setHasNext (boolean hasNext ){
This. hasNext = hasNext;
}
Public boolean isHasPrevious (){
Return hasPrevious;
}
/**
* @ Param hasPrevious The hasPrevious to set.
*/
Public void setHasPrevious (boolean hasPrevious ){
This. hasPrevious = hasPrevious;
}