/**
* Searches for a searchKey in the tree. Also retrieves most relevant snippet.
*
* @param searchKey, user typed search string.
* @return String, the most relevant snippet.
*/
public String search(String searchKey) {
searchKey = searchKey.toLowerCase();
searchKey = searchKey.trim();
searchTerms = searchKey.split("\\W"); // Split around all non-word characters.
ArrayList<Integer> termIndex = new ArrayList<Integer>();
ArrayList<Integer> temp;
Snippet mostRelevantSnippet = null;
if (searchTerms.length != 0) {
// Retrieve all indexes of search terms from trieTree
for (int i = 0; i < searchTerms.length; i++) {
temp = trieTree.getWordIndexes(searchTerms[i]);
if (temp != null) termIndex.addAll(temp);
}
ArrayList<Snippet> allSnippets = new ArrayList<Snippet>();
// Now extract snippets around each term search result.
for (int i = 0; i < termIndex.size(); i++) {
allSnippets.add(docParser.getSnippet(termIndex.get(i)));
}
for (int i = 0; i < allSnippets.size(); i++)
System.out.println("Snippet " + i + " : " + allSnippets.get(i));
// Score each snippet and extract most relevant one.
mostRelevantSnippet = relevanceEngine.getMostRelevant(allSnippets, searchTerms);
}
if (mostRelevantSnippet == null) return null;
return mostRelevantSnippet.toString();
}
default Snippets cat(final Iterable<Snippet> ss) {
final Snippets $ = make();
for (final Snippet s1 : this) for (final Snippet s2 : ss) $.add(s1.toString() + s2.toString());
return $;
}
