wzgl_rdb.pas

《delphi深度编程及其项目开发》

unit WZGL_RDB;

{$WARN SYMBOL_PLATFORM OFF}

interface

uses
  Windows, Messages, SysUtils, Classes, ComServ, ComObj, VCLCom, DataBkr,
  DBClient, P_server_TLB, StdVcl, DBTables, DB, Provider, variants, ComCtrls;

type
  TWZGL = class(TRemoteDataModule, IWZGL)
    Q_QXGL_ZHNR: TQuery;
    Q_QXGL_ZHSZ: TQuery;
    S_QXGL_ZHSZ: TDataSource;
    P_QXGL_ZHSZ: TDataSetProvider;
    Q_QXGL_YHSZ: TQuery;
    P_QXGL_YHSZ: TDataSetProvider;
    Q_General: TQuery;
    Q_QXGL_ZHNR_INDEX: TQuery;
    P_QXGL_ZHNR_INDEX: TDataSetProvider;
    Q_ZGDA: TQuery;
    Q_BMDA: TQuery;
    P_ZGDA: TDataSetProvider;
    P_BMDA: TDataSetProvider;
    Q_DQFLB: TQuery;
    P_DQFLB: TDataSetProvider;
    Q_GYSFLB: TQuery;
    P_GYSFLB: TDataSetProvider;
    Q_GYSDA: TQuery;
    P_GYSDA: TDataSetProvider;
    P_CKXX: TDataSetProvider;
    Q_JFDW: TQuery;
    Q_YFDW: TQuery;
    P_JFDW: TDataSetProvider;
    P_YFDW: TDataSetProvider;
    Q_GCXMDYB: TQuery;
    P_GCXMDYB: TDataSetProvider;
    P_CLBM: TDataSetProvider;
    Q_CLBM: TQuery;
    P_General: TDataSetProvider;
    Q_CLSLD_CX: TQuery;
    P_CLSLD_CX: TDataSetProvider;
    Q_CLSLD: TQuery;
    Q_CLSLD_DETAIL: TQuery;
    S_CLSLD: TDataSource;
    P_CLSLD: TDataSetProvider;
    P_CLSLD_DETAIL_INDEX: TDataSetProvider;
    Q_CLSLD_DETAIL_INDEX: TQuery;
    Q_CLBM_TEMP: TQuery;
    P_CLBM_TEMP: TDataSetProvider;
    Q_CKXX: TQuery;
    Q_BMLLD: TQuery;
    Q_BMLLD_DETAIL: TQuery;
    Q_BMLLD_DETAIL_INDEX: TQuery;
    Q_BMLLD_CX: TQuery;
    S_BMLLD: TDataSource;
    P_BMLLD: TDataSetProvider;
    P_BMLLD_DETAIL_INDEX: TDataSetProvider;
    P_BMLLD_CX: TDataSetProvider;
    Q_KCPD: TQuery;
    Q_KCPD_DETAIL: TQuery;
    Q_KCPD_DETAIL_INDEX: TQuery;
    Q_KCPD_CX: TQuery;
    S_KCPD: TDataSource;
    P_KCPD: TDataSetProvider;
    P_KCPD_DETAIL_INDEX: TDataSetProvider;
    P_KCPD_CX: TDataSetProvider;
    Q_KC: TQuery;
    P_KC: TDataSetProvider;
  private
    { Private declarations }
  protected
    class procedure UpdateRegistry(Register: Boolean; const ClassID, ProgID: string); override;
    procedure GetFuncs(aZh: OleVariant; var vFuncs: OleVariant); safecall;
    procedure Logined(bAliasName, aPassword: OleVariant; var aYhbh, aZH,
      aLogined: OleVariant); safecall;
    procedure AddUser(Host, IP, UserAlias, ConnTime: OleVariant); safecall;
    procedure DelUser(Host, IP, UserAlias, ConnTime: OleVariant); safecall;
    procedure GetSysTime(var aTime: OleVariant); safecall;
    procedure updatePassword(bAliasName, aPassword: OleVariant;
      var aResult: OleVariant); safecall;
  public

    { Public declarations }
  end;


implementation

uses U_server;

{$R *.DFM}

class procedure TWZGL.UpdateRegistry(Register: Boolean; const ClassID, ProgID: string);
begin
  if Register then
  begin
    inherited UpdateRegistry(Register, ClassID, ProgID);
    EnableSocketTransport(ClassID);
    EnableWebTransport(ClassID);
  end else
  begin
    DisableSocketTransport(ClassID);
    DisableWebTransport(ClassID);
    inherited UpdateRegistry(Register, ClassID, ProgID);
  end;
end;

{根据传进来的组号(aZh)，检索出相对应的功能列表，存入vFuncs数组}

procedure TWZGL.GetFuncs(aZh: OleVariant; var vFuncs: OleVariant);
var
  sqlString: string;
  i: integer;
begin
  //sql赋值
  sqlString := 'select 功能项 from WZ_QXGL_ZHNR where 组号=' + '''' + aZh + '''';
  Q_General.Close;
  Q_General.SQL.Clear;
  Q_General.SQL.Add(sqlString);
  try
    Q_General.Open;
  except
    exit;
  end;
  vFuncs := varArrayCreate([0, Q_General.RecordCount], varVariant);
  i := 0;
  //将查到的功能项存入数组
  while not Q_General.Eof do
  begin
    vFuncs[i] := Q_General.Fields[0].asString;
    Q_General.Next;
    i := i + 1;
  end;
end;


{根据传进来的bAliasName,aPassword，来验证是否是有效的身份}

procedure TWZGL.Logined(bAliasName, aPassword: OleVariant; var aYhbh, aZH,
  aLogined: OleVariant);
var
  sqlString: string;
begin
  aLogined := True;
  //用SQL语句来判断身份是否存在
  sqlString := 'select 用户编号,用户组号 from wz_qxgl_yhsz where 用户别名=' + '''' + bAliasName + ''' and ';
  sqlString := sqlString + ' 用户密码=' + '''' + aPassword + '''';
  Q_General.Close;
  Q_General.SQL.Clear;
  Q_General.SQL.Add(sqlString);
  try
    Q_General.Open;
  except
    aLogined := False;
    exit;
  end;
  if Q_General.RecordCount = 0 then //查到记录为O，代表身份不存在
  begin
    aLogined := False;
    exit;
  end;
  aYHBH := Q_General.FieldByName('用户编号').asString; //输出用户编号
  aZH := Q_General.FieldbyName('用户组号').asString; //输出用户组号
end;

{当有客户端连接时，添加一条显示信息到主窗口的列表框(ListView)}

procedure TWZGL.AddUser(Host, IP, UserAlias, ConnTime: OleVariant);
var
  aListItem: TListItem;
begin
  with frmMain do
  begin
    aListItem := ListView.Items.Add;
    aListItem.Caption := Host;
    aListItem.SubItems.add(IP);
    aListItem.SubItems.Add(UserAlias);
    aListItem.SubItems.Add(ConnTime);
  end;
end;

{当有客户端断开时，删除相应的显示信息}

procedure TWZGL.DelUser(Host, IP, UserAlias, ConnTime: OleVariant);
var
  i: integer;
begin
  with frmMain do
  begin
    for i := 0 to ListView.Items.Count - 1 do
    begin
      if (ListView.Items.Item[i].Caption = Host) and
        (ListView.Items.Item[i].SubItems[0] = IP) and
        (ListView.Items.Item[i].SubItems[1] = UserAlias) and
        (ListView.Items.Item[i].SubItems[2] = ConnTime) then
      begin
        ListView.Items.Delete(i);
        exit;
      end;
    end;
  end;
end;

{获取数据库当前系统时间}

procedure TWZGL.GetSysTime(var aTime: OleVariant);
begin
  Q_General.Close;
  Q_General.SQL.Clear;
  //得到数据库的当前时间
  Q_General.SQL.Add('select aTime = getDate()');
  Q_General.Open;
  aTime := Q_General.Fields[0].AsString;
  Q_General.Close;
end;


procedure TWZGL.updatePassword(bAliasName, aPassword: OleVariant;
  var aResult: OleVariant);
var
  sqlString: string;
begin
  aResult := True;
  sqlString := 'update WZ_QXGL_YHSZ set 用户密码=' + '''' + aPassword + '''';
  sqlString := sqlString + ' where 用户别名=' + '''' + bAliasName + '''';
  Q_General.Close;
  Q_General.SQL.Clear;
  Q_General.SQL.Add(sqlString);
  try
    Q_General.ExecSQL;
  except
    aResult := False;
  end;
end;

initialization
  TComponentFactory.Create(ComServer, TWZGL,
    Class_WZGL, ciMultiInstance, tmApartment);

end.