import java.io.Serializable;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.List;
import org.neo4j.graphdb.Node;
import org.neo4j.graphdb.Relationship;
import com.hnepri.common.util.LogInfoUtil;
/**
* Description: 图数据库数据分页模型类。<br>
* 利用此类可分页管理Node数据和Relationship数据等。
* Copyright: Copyright (c) 2015<br>
* Company: 河南电力科学研究院智能电网所<br>
* @author shangbingbing 2015-11-01编写
* @version 1.0
*/
public class GraphPageModel implements Serializable {
private static final long serialVersionUID = 330410716100946538L;
private int pageSize = 10;
private int pageIndex = 1;
private int prevPageIndex = 1;
private int nextPageIndex = 1;
private int pageCount = 0;
private int pageFirstRowIndex = 1;
private boolean hasNextPage = true;
private int totalCount = 0;
private long startTime = System.currentTimeMillis();
private long endTime = System.currentTimeMillis();
private List<Node> nodeList = new ArrayList<Node>();
private List<Relationship> relationshipList = new ArrayList<Relationship>();
/**
* 分页对象构造函数
* @param pageSize 每页记录数
*/
public GraphPageModel(int pageSize) {
this.pageSize = pageSize;
}
/**
* 获取分页记录数量
* @return
*/
public int getPageSize() {
return pageSize;
}
/**
* 获取当前页序号
* @return
*/
public int getPageIndex() {
return pageIndex;
}
/**
* 设置当前页序号
* @param pageIndex
*/
public void setPageIndex(int pageIndex) {
if(pageIndex <= 0) {
pageIndex = 1;
}
this.pageIndex = pageIndex;
}
/**
* 获取分页总数
* @return
*/
public int getPageCount() {
if(this.getTotalCount() == 0) {
this.pageCount = 0;
} else {
int shang = this.getTotalCount() / this.getPageSize();
int yu = this.getTotalCount() % this.getPageSize();
if(yu > 0) {
shang += 1;
}
this.pageCount = shang;
}
return pageCount;
}
/**
* 获取每页的第一行序号
* @return
*/
public int getPageFirstRowIndex() {
this.pageFirstRowIndex = (this.pageIndex - 1) * this.getPageSize() + 1;
return pageFirstRowIndex;
}
/**
* 获取上一页序号
* @return
*/
public int getPrevPageIndex() {
if(this.pageIndex > 1) {
this.prevPageIndex = this.pageIndex - 1;
} else {
this.prevPageIndex = 1;
}
return prevPageIndex;
}
/**
* 获取下一页序号
* @return
*/
public int getNextPageIndex() {
if(this.pageIndex < this.pageCount) {
this.nextPageIndex = this.pageIndex + 1;
} else {
this.nextPageIndex = this.pageCount;
}
return nextPageIndex;
}
/**
* 跳转到下一页
*/
public void nextPage() {
if(this.totalCount == 0 || this.getPageCount() == 0) {
this.pageIndex = 1;
} else {
if(this.pageIndex < this.pageCount) {
this.pageIndex = this.pageIndex + 1;
} else {
this.pageIndex = this.pageCount;
}
}
}
/**
* 跳转到上一页
*/
public void prevPage() {
if(this.pageIndex > 1) {
this.pageIndex = this.pageIndex - 1;
} else {
this.pageIndex = 1;
}
}
/**
* 获取是否有下一页
* @return
*/
public boolean isHasNextPage() {
if(this.pageIndex < this.getPageCount()) {
this.hasNextPage = true;
} else {
this.hasNextPage = false;
}
return hasNextPage;
}
/**
* 获取总记录数
*/
public int getTotalCount() {
return totalCount;
}
/**
* 获取总记录数
* @param totalCount
*/
public void setTotalCount(int totalCount) {
this.totalCount = totalCount;
}
/**
* 初始化起始时间（毫秒）
*/
public void initStartTime() {
this.startTime = System.currentTimeMillis();
}
/**
* 初始化截止时间（毫秒）
*/
public void initEndTime() {
this.endTime = System.currentTimeMillis();
}
/**
* 获取毫秒格式的耗时信息
* @return
*/
public String getTimeIntervalByMilli() {
return String.valueOf(this.endTime - this.startTime) + "毫秒";
}
/**
* 获取秒格式的耗时信息
* @return
*/
public String getTimeIntervalBySecond() {
double interval = (this.endTime - this.startTime)/1000.0;
DecimalFormat df = new DecimalFormat("#.##");
return df.format(interval) + "秒";
}
/**
* 打印时间信息
*/
public void printTimeInfo() {
LogInfoUtil.printLog("起始时间：" + this.startTime);
LogInfoUtil.printLog("截止时间：" + this.endTime);
LogInfoUtil.printLog("耗费时间：" + this.getTimeIntervalBySecond());
}
/**
* 获取Node检索结果列表
* @return
*/
public List<Node> getNodeList() {
return nodeList;
}
/**
* 获取Relationship检索结果列表
* @return
*/
public List<Relationship> getRelationshipList() {
return relationshipList;
}
}