bookop.cpp

学校图书馆信息化计划核心----图书管理系统vc版V2.0

// BookOp.cpp : implementation file
//

#include "stdafx.h"
#include "library.h"
#include "BookOp.h"
#include "ReadSet.h"
#include "BookLibSet.h"
#include "BookLoanSet.h"
#include "OverDlg.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CBookOp dialog
CReadSet m_readerset;
CBookLibSet m_booklibset;
CBookLoanSet m_loanset;
CBookOp::CBookOp(CWnd* pParent /*=NULL*/)
	: CDialog(CBookOp::IDD, pParent)
{
	//{{AFX_DATA_INIT(CBookOp)
	m_bookid = _T("");
	m_message = _T("");
	m_readerid = _T("");
	//}}AFX_DATA_INIT
}


void CBookOp::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CBookOp)
	DDX_Text(pDX, IDC_BOOKID, m_bookid);
	DDX_Text(pDX, IDC_MESSAGE, m_message);
	DDX_Text(pDX, IDC_READERID, m_readerid);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CBookOp, CDialog)
	//{{AFX_MSG_MAP(CBookOp)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CBookOp message handlers

void CBookOp::OnOK() 
{
	// TODO: Add extra validation here
	UpdateData();
	if(type==1)
	{
    m_readerset.m_strFilter="ReaderId='"+m_readerid+"'";
	m_readerset.Open();
	if(m_readerset.IsEOF())
	{
		MessageBox("输入读者信息有误!");
		m_readerset.Close();
	}
	else
	{
      m_readerset.Close();
	  CDialog::OnOK();
	}
	}
	else
	{
		m_loanset.m_strFilter="Bookid_loan='"+m_bookid+"'";
		m_loanset.Open();
		if(m_loanset.IsEOF())
		{
			MessageBox("输入书号有误!");
			m_loanset.Close();
		}
		else
		{
			CString str;
			str=m_loanset.m_ReaderId_loan;
		
			m_loanset.Close();
           if(readerstatus(str)==3)
		   {
           		MessageBox("有书籍超期");
                COverDlg  a;
				a.type=2;
	     		a.readerid=str;
		    	a.DoModal();
		   }
	       m_loanset.m_strFilter="Bookid_loan='"+m_bookid+"'";
		   m_loanset.Open();
		   m_loanset.Delete();
		   m_loanset.Close();
	
		   CDialog::OnOK();
		}
	}
}

BOOL CBookOp::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	if(type==2)
         GetDlgItem(IDC_READERID)->EnableWindow(false);
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

int CBookOp::readerstatus(CString readerid)
{
	m_loanset.m_strFilter="ReaderId_loan='"+readerid+"'";
	m_loanset.Open();
	time_t now;
    now = time(0);
	int i=0;
	while(!m_loanset.IsEOF())
	{
		if(m_loanset.m_Backdate<now)
		{
			m_loanset.Close();
			return 3;
		}
		i++;
		m_loanset.MoveNext();
	}
	if(i==5)
	{
		m_loanset.Close();
		return 2;//返回状态2表示已经借满了书
	}
	else
	{
		m_loanset.Close();
		return 1;//返回状态1表示正常状态
	}

}