private Cursor find(Row row) { if (index == null) { // for the case "in(select ...)", the query might // use an optimization and not create the index // up front createIndex(); } Cursor cursor = index.find(session, row, row); while (cursor.next()) { SearchRow found = cursor.getSearchRow(); boolean ok = true; Database db = session.getDatabase(); for (int i = 0; i < row.getColumnCount(); i++) { if (!db.areEqual(row.getValue(i), found.getValue(i))) { ok = false; break; } } if (ok) { return cursor; } } return null; }
private boolean sameResultAsLast(ServerSession s, Value[] params, Value[] lastParams, long lastEval) { if (!cacheableChecked) { long max = getMaxDataModificationId(); noCache = max == Long.MAX_VALUE; cacheableChecked = true; } if (noCache) { return false; } Database db = s.getDatabase(); for (int i = 0; i < params.length; i++) { Value a = lastParams[i], b = params[i]; if (a.getType() != b.getType() || !db.areEqual(a, b)) { return false; } } if (!isEverything(ExpressionVisitor.DETERMINISTIC_VISITOR) || !isEverything(ExpressionVisitor.INDEPENDENT_VISITOR)) { return false; } if (db.getModificationDataId() > lastEval && getMaxDataModificationId() > lastEval) { return false; } return true; }
int index = -1; for (int i = 1; i < args.length - 1; i += 2) { if (database.areEqual(v0, getNullOrValue(session, args, values, i))) { index = i + 1;
result = database.areEqual(v0, v1) ? ValueNull.INSTANCE : v0; break;