[opencms-dev] get all categories listed

[kaybe]

I'm trying to list all categories and iterate over them, using
CmsCategoryService with method readCategories. But I get no results, no
exception either, just an empty list. I made a category folder 'theme' in
'/sites/default/_catagories/' and made some categories under this 'theme'
category.
Is this the wrong method? 
I tried different paths like "_categories", "_categories/", etc...


<%@page buffer="none" session="false" import="java.util.*,
org.opencms.file.*, org.opencms.jsp.*, org.opencms.util.*,
org.opencms.relations.CmsCategoryService" %>
<%@ taglib prefix="cms" uri="http://www.opencms.org/taglib/cms" %>
<%!
public void buildCategoryMap(CmsJspActionElement cms, String uri,
java.io.Writer out) throws Exception
{
	final String REFERENCE_PATH = "/sites/default/_categories/";
	final String CATEGORY_NAME = "theme"; 
	final boolean INCLUDE_SUB_CATEGORIES = false;
	int amount = 0;
	CmsObject cmso = cms.getCmsObject();
	CmsCategoryService catService = CmsCategoryService.getInstance(); // Get
the singleton
	try {
		List res = catService.readCategories(cmso, REFERENCE_PATH, false,
CATEGORY_NAME); 
		Iterator i = res.iterator();
		
		while (i.hasNext()) {
			
			amount++;
			out.write("<li>" + amount + "</li>");
		}
	}
		catch (Exception e) {
		out.write("<li>something is very wrong</li>");
	}
}

	
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