我是新来的Java和过去几个星期,我试图修改一个Web应用程序。我得到了一个链接到一个mysql表的链表,这个链表需要被分成两个表(第一个和第二个工作清单是一个清单,第三个工作清单是另一个清单)。现在我的名单看起来是这样的:如何分割我的列表?
private List<Workbreak> workbreaks = new ArrayList<Workbreak>();
@OneToMany(fetch= FetchType.EAGER, cascade = {CascadeType.PERSIST, CascadeType.MERGE})
@JoinTable(name = "workbreak", joinColumns = {@JoinColumn(name="conveyorId")}, inverseJoinColumns={@JoinColumn(name="Id")})
public List<Workbreak> getWorkbreaks() {
return workbreaks;
}
public void setWorkbreaks(List<Workbreak> workbreaks) {
this.workbreaks = workbreaks;
}
workbreak表包含3行的休息1休息2和3,突破现在当任何休息时间我得到的屏幕上的工作休息的消息,我想,当是突破3来显示不同的信息。
这些是如果破裂或不是如何检查:
<FRAMESET ROWS="100%" border="0" bordercolor="black" onLoad="starttime()">
<% monitor.refreshInformation(request.getParameter("conveyorId"));%>
<%if (monitor.getCurrentResultSet() == null){%>
<FRAME SRC="conveyorShiftbreak.jsp" SCROLLING=NO NAME=MAIN>
<%}else {
if (monitor.getCurrentResultSet().isWorkBreak()){ %>
<FRAME SRC="conveyorWorkbreak.jsp" SCROLLING=YES NAME=MAIN>
<%} else {%>
<FRAME SRC="conveyorMonitor.jsp" SCROLLING=NO NAME=MAIN>
<%}%>
<%}%>
所以我就isWorkBreak覆盖所有的休息。
boolean isWorkBreak = false;
public boolean isWorkBreak(){
try{
isWorkBreak = false;
Date current = Utils.getCalendarToTime(java.util.Calendar.getInstance());
int offset = TimeZone.getDefault().getOffset(current.getTime());
java.util.Calendar calclone = java.util.Calendar.getInstance();
calclone.setTime(current);
calclone.add(java.util.Calendar.MILLISECOND, offset);
long currentTime = calclone.getTimeInMillis();
String sfStart = Utils.getFormatedTime(getShift().getStartTime());
long shiftStart = Utils.parseTimestamp(sfStart).getTimeInMillis();
String sfEnd = Utils.getFormatedTime(getShift().getEndTime());
long shiftEnd = Utils.parseTimestamp(sfEnd).getTimeInMillis();
long shift = getShiftMinutes(sfStart, sfEnd);
List<Workbreak> workbreaks = getWorkbreaks();
for (Workbreak workbreak :workbreaks){
String wbStart = Utils.getFormatedTime(workbreak.getStartTime());
String wbEnd = Utils.getFormatedTime(workbreak.getEndTime());
long wTimeFrame = getShiftMinutes(wbStart, wbEnd);
if (wTimeFrame >0){
long workbreakStart = Utils.parseTimestamp(wbStart).getTimeInMillis();
long workbreakEnd = Utils.parseTimestamp(wbEnd).getTimeInMillis();
//do correction
if (workbreakStart <shiftStart){//shift is in the next day
workbreakStart += 24*60*60*1000; //add one day
workbreakEnd += 24*60*60*1000; //add one day
}
if (shiftStart <= workbreakStart && currentTime<shiftStart){//curent time is next day
currentTime += 24*60*60*1000; //add one day
}
if (currentTime > workbreakStart && currentTime < workbreakEnd){
isWorkBreak = true;
workbrakeRemaingMinutes = (workbreakEnd - currentTime)/1000/60;
break;
}
}
}
}
catch (Exception e) {
logger.error("!!!ERROR isWorkBreak" + e.getMessage());
}
return isWorkBreak;
}
所以我尝试是创建链接到同一个表“workbreak”一个新的列表,并覆盖isWorkBreak2内第3次破发。但是现在,即使我在屏幕上收到相同的消息,我也可以使用getCurrentResultSet().isWorkBreak
或getCurrentResultSet().isWorkBreak2
。
<% monitor.refreshInformation(request.getParameter("conveyorId"));%>
<%if (monitor.getCurrentResultSet() == null){%>
<FRAME SRC="conveyorShiftbreak.jsp" SCROLLING=NO NAME=MAIN>
<%}else if (monitor.getCurrentResultSet().isWorkBreak2()){ %>
<FRAME SRC="conveyorSDiscussion.jsp" SCROLLING=YES NAME=MAIN>
<%}else if (monitor.getCurrentResultSet().isWorkBreak()){ %>
<FRAME SRC="conveyorWorkbreak.jsp" SCROLLING=NO NAME=MAIN>
<%}else {%>
<FRAME SRC="conveyorMonitor.jsp" SCROLLING=NO NAME=MAIN>
<%} %>
任何提示我如何能在2分割清单,并使其显示不同的消息?谢谢!
这里是
我还添加了表格结构 –