public static String processSingleQuery(String line, BPlusTree bTree) {
URLList queryResult = bTree.getURLs(line.hashCode());
if (queryResult != null) {
return Searcher.getURLString(queryResult);
} else {
return "The word \"" + line + "\" has NOT been found.";
}
}
public static String processAnd(StringTokenizer tokenizer, BPlusTree bTree) {
String x = tokenizer.nextToken();
String y = tokenizer.nextToken();
x = trimSpaces(x);
y = trimSpaces(y);
URLList commonURLs = findCommonURLs(x, y, bTree);
return Searcher.getURLString(commonURLs);
}
public static String processOr(StringTokenizer tokenizer, BPlusTree bTree) {
String x = tokenizer.nextToken();
String y = tokenizer.nextToken();
x = trimSpaces(x);
y = trimSpaces(y);
URLList xURLs = bTree.getURLs(x.hashCode());
URLList yURLs = bTree.getURLs(y.hashCode());
URLList current = xURLs;
while (current.next != null) {
current = current.next;
}
current.next = yURLs;
return Searcher.getURLString(xURLs);
}