ELOCATION_MERCATOR.WORLD_MAP errors for pie/bar graph theme below zoom 5

Question

Hi,
I am trying to create a map using ADF DVT map component in my jspx page. I am using 'elocation_mercator.world_map'. I am creating a pie graph theme over the base world map. For some reason whenever I zoom below 5, i get following javascript error
[MVThemeBasedFOIControl.foiLoaded] MAPVIEWER-05523: Cannot process response from MapViewer server. (<?xml version="1.0" encoding="UTF-8" ?> <oms_error> MAPVIEWER-06009: Error processing an FOI request.
Root cause:FOIServlet:null</oms_error>)
The Pie graphs displays fine at or above zoom level 5. I tried the same thing using my local map viewer instance which has mvdemo.demo_map as the base map. The pie graph displays fine at all zoom levels using my local map. Can anybody tell me what may be the problem when I use the elocator world_map. I can't even look at the logs as it's a hosted service.

Answer 1

Here are the steps to reproduce the problem
1) Create a jspx page.
2) From the component palette on the right hand side, select ADF Data Visualizations and then click on Map in the Geographical Map section. This will open an ADF Map configuration window.
3) Create a new Map Configuration by providing an id and a URL connection. If you have not created a URL Connection to elocation service, create a new connection to "http://elocation.oracle.com/mapviewer" and select that connection.
4) You will see data source as ELOCATION_MERCATOR and Base map as WORLD_MAP selected. Enter startingY="38.648911" startingX="-98.349609" , select mapZoom="5" and Click on OK.
5) Now create an entity object and a view object based on the STATES table in the MVDEMO database and add it to an application module.
6) Refresh the application module data control. You should a new StatesView1 data control.
7) Drop it on the map and select Bar graph theme. This will open a Bar Graph theme configuration window for the Map.
8) In the Name select MAP_STATES_ABBRV. In the location column select STATE_ABRV.
9) In the Data Location Select Location as StateAbrv and Location Label as State.
10) Enter Series Attribute as Totpop and Label as Total Population. Enter series attribute as Female and Label as Female Population. Click OK.
11) Now Run this page.
12) The page runs fine displaying the Bar chart. Now zoom out. You will get error
'[MVThemeBasedFOIControl.foiLoaded] MAPVIEWER-05523: Cannot process response from MapViewer server. (<?xml version="1.0" encoding="UTF-8" ?> <oms_error> MAPVIEWER-06009: Error processing an FOI request.
Root cause:FOIServlet:null</oms_error>)'
When you say that we should use elocation for map tiles not for FOI rendering, does that mean that I should not use the themes provided by elocation. When I enter the base URL to a mapviewer instance in my map client, the base map and the themes are displayed from the database used by the mapviewer instance. So, how can I use my own mapviewer for FOI rendering? Can you please explain a little more. Thanks.