Is your  “Postgres” database an RDBMS db or an NSF - just to clarify?

Since you are looking at the teamroom example, have you looked at the JSON data returned to browser by the ? Ultimately you need to emulate this data structure - see example at end of page.

If you have Firebug installed you can see that the last request issued on the team room calendar page is an ajax request like this:

http://server/db.nsf/calendar.xsp/inoteslegacyjson?startKey=20101128T000000,00Z&untilKey=20101226T000000,00Z

If you expand the response you will see a stream of data In the JSON column, which is used to populate the calendar.

The generates this JSON based on the params provided in the page, e.g. name of calendar view, columns required etc..

        viewName="calendarOutline" var="entry" contentType="text/plain"
        colCalendarDate="CalDateTime" colEntryIcon="Icon"
      colStartTime="StartDateTime" colEndTime="EndDateTime"
      colSubject="For" colChair="Chair">

If you look at the implementation of calendarJsonLegacyService (DominoCalendarJsonLegacyService.java) you will see how it does this.  And you will see that it is just an implementation of a REST service - and that you can provide your own REST services.  Typically people point the calendarJsonLegacyService at their Domino calendar view. If the data is somewhere else, you could write a service to extract it and return the JSON as shown below.

JSON :

{
    "@timestamp":"20110127T191400",
    "@toplevelentries":"2",
    "viewentry":
    [
      {
          "@unid":"A180742A15AB07D0802577FC00512D0F",
          "@noteid":"91E",
          "@position":"1",
          "@read":"true",
          "@siblings":"2",
          "entrydata":
          [
            {
                "@columnnumber":"0",
                "@name":"$134",
                "datetime":
                {
                    "0":"20101202T140000"
                }
            },
            {
                "@columnnumber":"1",
                "@name":"$149",
                "number":
                {
                    "0":158
                }
            },
            {
                "@columnnumber":"2",
                "@name":"$144",
                "datetime":
                {
                    "0":"20101202T140000"
                }
            },
            {
                "@columnnumber":"3",
                "@name":"$146",
                "datetime":
                {
                    "0":"20101202T150000"
                }
            },
            {
                "@columnnumber":"4",
                "@name":"$147",
                "text":
                {
                    "0":"Meeting: OGS Demo (14:00)"
                }
            },
            {
                "@columnnumber":"5",
                "@name":"$153",
                "text":
                {
                    "0":"Martin Donnelly"
                }
            }
          ]
      },
      {
          "@unid":"DD9D70D359CF7008802577FC003F8799",
          "@noteid":"91A",
          "@position":"2",
          "@read":"true",
          "@siblings":"2",
          "entrydata":
          [
            {
                "@columnnumber":"0",
                "@name":"$134",
                "datetime":
                {
                    "0":"20101203T140000"
                }
            },
            {
                "@columnnumber":"1",
                "@name":"$149",
                "number":
                {
                    "0":158
                }
            },
            {
                "@columnnumber":"2",
                "@name":"$144",
                "datetime":
                {
                    "0":"20101203T140000"
                }
            },
            {
                "@columnnumber":"3",
                "@name":"$146",
                "datetime":
                {
                    "0":"20101203T150000"
                }
            },
            {
                "@columnnumber":"4",
                "@name":"$147",
                "text":
                {
                    "0":"Meeting: OGS Demo (14:00)"
                }
            },
            {
                "@columnnumber":"5",
                "@name":"$153",
                "text":
                {
                    "0":"Martin Donnelly"
                }
            }
          ]
      }
    ]
}