SpringSide封装Page类

标签：springside封装page类

package org.springside.modules.orm;

import java.util.Collections;
import java.util.List;

import org.apache.commons.lang.StringUtils;

public class Page<T> {
 // 公共变量 //
 public static final String ASC = "asc";
 public static final String DESC = "desc";

 //分页参数 //
 protected int pageNo = 1;
 protected int pageSize = 1;
 protected String orderBy = null;
 protected String order = null;
 protected boolean autoCount = true;

 //返回结果 //
 protected List<T> result = Collections.emptyList();
 protected long totalCount = -1;

 // 构造函数 //

 public Page() {
 }

 public Page(final int pageSize) {
  setPageSize(pageSize);
 }

 public Page(final int pageSize, final boolean autoCount) {
  setPageSize(pageSize);
  setAutoCount(autoCount);
 }

 // 查询参数访问函数 //

 
 public int getPageNo() {
  return pageNo;
 }

 
 public void setPageNo(final int pageNo) {
  this.pageNo = pageNo;

  if (pageNo < 1) {
   this.pageNo = 1;
  }
 }

 
 public int getPageSize() {
  return pageSize;
 }

 
 public void setPageSize(final int pageSize) {
  this.pageSize = pageSize;

  if (pageSize < 1) {
   this.pageSize = 1;
  }
 }

 
 public int getFirst() {
  return ((pageNo - 1) * pageSize) + 1;
 }

 
 public String getOrderBy() {
  return orderBy;
 }

 
 public void setOrderBy(final String orderBy) {
  this.orderBy = orderBy;
 }

 
 public boolean isOrderBySetted() {
  return (StringUtils.isNotBlank(orderBy) && StringUtils.isNotBlank(order));
 }

 
 public String getOrder() {
  return order;
 }

 
 public void setOrder(final String order) {
  //检查order字符串的合法值
  String[] orders = StringUtils.split(StringUtils.lowerCase(order), ‘,‘);
  for (String orderStr : orders) {
   if (!StringUtils.equals(DESC, orderStr) && !StringUtils.equals(ASC, orderStr))
    throw new IllegalArgumentException("排序方向" + orderStr + "不是合法值");
  }

  this.order = StringUtils.lowerCase(order);
 }

 
 public boolean isAutoCount() {
  return autoCount;
 }

 
 public void setAutoCount(final boolean autoCount) {
  this.autoCount = autoCount;
 }

 // 访问查询结果函数 //

 
 public List<T> getResult() {
  return result;
 }

 public void setResult(final List<T> result) {
  this.result = result;
 }

 
 public long getTotalCount() {
  return totalCount;
 }

 public void setTotalCount(final long totalCount) {
  this.totalCount = totalCount;
 }

 
 public long getTotalPages() {
  if (totalCount < 0)
   return -1;

  long count = totalCount / pageSize;
  if (totalCount % pageSize > 0) {
   count++;
  }
  return count;
 }

 
 public boolean isHasNext() {
  return (pageNo + 1 <= getTotalPages());
 }

 
 public int getNextPage() {
  if (isHasNext())
   return pageNo + 1;
  else
   return pageNo;
 }

 
 public boolean isHasPre() {
  return (pageNo - 1 >= 1);
 }

 
 public int getPrePage() {
  if (isHasPre())
   return pageNo - 1;
  else
   return pageNo;
 }
}

SpringSide封装Page类

标签：springside封装page类

原文地址：http://blog.csdn.net/benjamin_whx/article/details/39499471