package com.highdatas.mdm.pojo;

import com.fasterxml.jackson.annotation.JsonInclude;

@JsonInclude(JsonInclude.Include.NON_NULL)
public class Page  {
	
    private int pageSize;
    private long recordCount;
    private int pageNo;
    private int pages;
    private transient Integer beginNo;
    private transient Integer endNo;

    public int getBeginNo() {
        return beginNo;
    }

    public void setBeginNo(int beginNo) {
        this.beginNo = beginNo;
    }

    public int getEndNo() {
        return endNo;
    }

    public void setEndNo(int endNo) {
        this.endNo = endNo;
    }

    public int getPages() {
        return pages;
    }

    public void setPages(int pages) {
        this.pages = pages;
    }

    public Page(long recordCount) {
    	this.pageSize = 20;
    	this.pageNo = 1;
        this.recordCount = recordCount;
    }  


	public int getBeginRecordNo() { 
    	int recordNo = pageSize * (pageNo - 1) + 1; 
        return recordNo;  
    }  
    
    public int getBeginRecordNo_1() { 
    	int recordNo = getBeginRecordNo();
        return recordNo - 1;  
    } 
    
    public long getEndRecordNo() {
    	long recordNo = pageSize * pageNo;
        return Math.min(recordNo, recordCount);  
    }
    public long getRecordNo() {
        long recordNo = pageSize * pageNo;
        return recordNo;
    }
    public long getPreRecordNo() {
        long recordNo = pageSize * (pageNo - 1);
        return recordNo;
    }

    public int getPageSize() {  
        return pageSize;  
    }  
  
    public int getPageNo() {  
        return pageNo;
    }  
  
    public long getRecordCount() {
        return recordCount;  
    }  
  
    public int getPageCount() {  
        return (int)Math.ceil(recordCount * 1.0d / pageSize);
    }  
  
    public void setRecordCount(int count) {
    	this.recordCount = count;
    }
  
    public void setPageSize(int value) { 
    	if (value <= 0) {
    		return;
    	}
       	pageSize = value;  
    }  
    
	public void setPageNo(int pageNo) {
		this.pageNo = pageNo;
	}

	public String getLimitSQL() {
        if (beginNo != null && endNo != null) {
            return " limit " + beginNo + ", " + (endNo - beginNo);
        }
		return " limit " + getBeginRecordNo_1() + ", " + pageSize;
	}

}