Let me try to explain this a quickly and clearly as possible. I want to
make my struts application have a calendar. The user can add notes to each
day on the calendar. I made a class that will contain all the information
for the note (see the ANote class below). The note class contains a string
and a date. I also have a class that store many notes. The class (see the
MyNotes class below) will hold the notes in ArrayLists that are stored in a
Hashtable. So if I add 2 notes for Jan 1, 2003 and 3 notes for Jan 2, 2003,
the Hashtable will contain 2 ArrayLists....one array list for each day. I
thought this would be easy to iterate through each ArrayList.......that is
what I thought. My struts Action will create a MyNotes object, fill the
MyNotes object with the notes that need to be displayed on the calendar (may
be a weekly calendar, monthly, etc). This filled MyNotes object will be set
as a request attribute (e.g. request.setAttribute("myNotes", myNotes); ).
What I don't know how to do is to easily get the ArrayList for each day
using the MyNotes.getNotes(date) method. I am _trying_ to use the struts
logic tag libraries to do this. I CAN do this using Java code in my JSP,
but that is the purpose of the struts design...to minimize the use of Java
in the JSP. So...is there a way to use the struts logic:iterate tag to get
the ArrayList of a particular day? Something like:
("theDays" can be a collection of the days to display on the calendar)
<logic:iterate id="theDays" name="days">
<logic:iterate name="someNotes" id="myNotes" property="notes"
parameter=<bean:write name="days">>
The note says:<bean:write name="someNotes" property="note">
</logic:iterate>
</logic:iterate>
----------------------------------------------------------------------------
---
import java.util.Date;
public class ANote {
protected String note;
protected Date event_date;
public void setNote(String note) { this.note = note; }
public String getNote() { return note; }
public void setEventDate(Date event_date) { this.event_date =
event_date; }
public Date getEventDate() { return event_date; }
}
----------------------------------------------------------------------------
---
import java.util.Hashtable;
import java.util.ArrayList;
import java.util.GregorianCalendar;
import java.util.Calendar;
import java.util.Date;
import java.text.SimpleDateFormat;
public class MyNotes {
private Hashtable allNotes;
// Adds a note to the ArrayList in the Hashtable
public void addNote(ANote myNote) {
ArrayList notes;
// Get date as hash key
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
String dateString = sdf.format(note.getEventDate());
// get existing array list for date
try {
notes = (ArrayList)allNotes.get(dateString);
if (notes == null) {
notes = new ArrayList();
allNotes.put(dateString, notes);
}
} catch (Throwable t) {
}
// Add appointment
notes.add(myNote);
}
// Returns all MyNotes from a date
public ArrayList getNotes(Date date) {
ArrayList notes;
// Get hash key
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
String dateString = sdf.format(date);
// get existing array list for date
try {
notes = (ArrayList)allNotes.get(dateString);
return notes;
} catch (Throwable t) {
}
}
public MyNotes() {
allNotes = new Hashtable();
}
}
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