Overall, I am trying to create basically a search program using inverted indexes, TF-IDF, and other related topics.
I have a TreeMap, wordToPost, which maps a string to a Posting object.
// Map each term to a Posting object
Map<String, Posting> wordToPost = new TreeMap<String, Posting>();
Previously, a string, stemQuery, has been put into the above TreeMap with its corresponding Posting. I retrieve the Posting object for stemQuery and assign it to thisPosting:
// Get the posting object for this word
Posting thisPosting = wordToPost.get(query)
Then I take the thisPosting object and get its internal TreeMap, which is defined as:
// Map the document ID to the number of occurrences in that document
TreeMap<Integer, Integer> docToOccur = new TreeMap<Integer, Integer>();
Getting the TreeMap:
TreeMap trMap = thisPosting.getMap();
Now I would like to iterate through each entry in trMap, so I do the following:
for (Map.Entry<Integer, Integer> entry : trMap.entrySet())
{
// Will do misc. operations here
}
The error I get is on the for loop line. It says required: Entry found: Object There is a little arrow that points to the first parenthesis on trMap.entrySet()
I understand that this is saying trMap.entrySet is evidently returning an Object, instead of the expected Entry, but I'm not sure how to fix this. How do I successfully iterate through this TreeMap?
