Java DirContext片段仅记录几条

Question

When I try to search records by using query (testAtt=1) in Apache Directory Studio they showing me 17062 records and when I run the same query on my Java code they get only 8531 records. My Java Code is given below

String searchFilter = propFile.getProperty(Constants.GetAllUsersQuery);
String ldapSearchBase = propFile.getProperty(Constants.eDir_SearchBase);
SearchControls searchControls = new SearchControls();
searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);
NamingEnumeration<SearchResult> resultsApp = ctx.search(ldapSearchBase, searchFilter, searchControls);
int i = 0;
while (resultsApp.hasMoreElements()) {
    SearchResult result = (SearchResult) resultsApp.next();
    String DN = "";
    DN = result.getNameInNamespace();
    if (!DN.isEmpty()) {
        eDir_AllUsersDNList.add(i, DN);
        i++;
    }
    resultsApp.nextElement();
}

System.out.println("eDir_AllUsersDNList : "+eDir_AllUsersDNList.size());

Please help me to find out the issue. I am using Java 8.

Answer 1

while (resultsApp.hasMoreElements()) {
    SearchResult result = (SearchResult) resultsApp.next();
    String DN = "";
    DN = result.getNameInNamespace();
    if (!DN.isEmpty()) {
        eDir_AllUsersDNList.add(i, DN);
        i++;
    }
    resultsApp.nextElement();
}

Remove the final nextElement() call. It is doing nothing useful, and it is skipping all the even-numbered elements. Note that 8531 is half of 17062.

NB the cast is redundant, and the DN can't be empty, and providing an initializer for it when you assign it on the very next line is pointless.