public void runTest(DatabaseType type) throws DatabaseException, FileNotFoundException {
int i;
DatabaseConfig conf = new DatabaseConfig();
conf.setErrorStream(TestUtils.getErrorStream());
conf.setErrorPrefix("HashCompareTest");
conf.setType(type);
if (type == DatabaseType.HASH) {
conf.setHashComparator(new HashComparator());
} else conf.setBtreeComparator(new BtreeComparator());
conf.setAllowCreate(true);
Database db = new Database(HASHCOMPARETEST_DBNAME, null, conf);
DatabaseEntry key = new DatabaseEntry();
DatabaseEntry data = new DatabaseEntry("world".getBytes());
for (i = 0; i < 100; i++) {
key.setData((new String("key" + i)).getBytes());
db.put(null, key, data);
}
i = 0;
Cursor dbc;
dbc = db.openCursor(null, CursorConfig.DEFAULT);
while (dbc.getNext(key, data, LockMode.DEFAULT) == OperationStatus.SUCCESS) {
++i;
}
// System.out.println("retrieved " + i + " entries");
dbc.close();
db.close();
}
public static Database buildsecondary(Database std) {
// Parse database loaded
try {
io.deleteFile("secondarydb");
// SecondaryDatabases started
DatabaseConfig dbConfig = new DatabaseConfig();
dbConfig.setType(DatabaseType.HASH);
dbConfig.setAllowCreate(true);
dbConfig.setUnsortedDuplicates(true);
Database secdb = new Database("secondarydb", null, dbConfig);
// Cursors started
Cursor stdcursor = std.openCursor(null, null);
Cursor secdbcursor = secdb.openCursor(null, null);
// Key and Data started
DatabaseEntry stdkey = new DatabaseEntry();
DatabaseEntry stddata = new DatabaseEntry();
DatabaseEntry seckey = new DatabaseEntry();
DatabaseEntry secdata = new DatabaseEntry();
while (stdcursor.getNext(stdkey, stddata, LockMode.DEFAULT)
== OperationStatus.SUCCESS) { // Writing into secondary db
String[] key = new String(stdkey.getData()).split(",");
String data = new String(stddata.getData());
// DEBUG:
// System.out.println("key 0:" + key[0] + " key 1:" + key[1] + " data:" + data);
seckey.setData(key[1].getBytes());
OperationStatus operation = secdbcursor.getSearchKey(seckey, secdata, LockMode.DEFAULT);
String b = null;
while (operation == OperationStatus.SUCCESS) {
b = new String(secdata.getData());
secdbcursor.delete();
operation = secdbcursor.getNextDup(seckey, secdata, LockMode.DEFAULT);
}
if (b == null) {
seckey.setData(key[1].getBytes());
secdata.setData(("(" + key[0] + "," + data + ")").getBytes());
secdb.put(null, seckey, secdata);
}
if (b != null) {
secdata.setData(b.concat("(" + key[0] + "," + data + ")").getBytes());
secdb.put(null, seckey, secdata);
}
seckey.setData(null);
secdata.setData(null);
stdkey.setData(null);
stddata.setData(null);
}
// io.debugread(secdb);
return secdb;
} catch (Exception e) {
System.out.println("Error creating <user>,<song,rating> secondary table!\n");
System.out.println(e.getMessage());
}
return null; // SHOULD NEVER HAPPEN
}
/**
* Instantiates the query for rscore
*
* @param query contains user query
* @param cmp contains compare structure
* @param resultIndices passes the indices that store the result
* @throws DatabaseException when BerkeleyDB passes errors
* @throws FileNotFoundException when respective .idx or .txt value not found
*/
private void queryRScore(String query, ArrayList<Integer> resultIndices, COMPARE cmp)
throws FileNotFoundException, DatabaseException {
if (cmp == COMPARE.EQUAL) {
query = query.replace("rscore=", "").toLowerCase();
queryDB(query, rscoreIndex, resultIndices);
return;
} else if (cmp == COMPARE.LESS) {
query = query.replace("rscore<", "");
} else {
query = query.replace("rscore>", "");
}
OperationStatus oprStatus;
Database std_db = new Database(rscoreIndex, null, null);
Cursor std_cursor = std_db.openCursor(null, null); // Create new cursor object
if (cmp == COMPARE.LESS) {
for (int n = 0; n < Integer.parseInt(query); n++) {
String searchkey = new String();
searchkey = n + ".0";
DatabaseEntry key = new DatabaseEntry();
DatabaseEntry data = new DatabaseEntry();
oprStatus = std_cursor.getFirst(key, data, LockMode.DEFAULT);
key.setData(searchkey.getBytes());
key.setSize(searchkey.length());
data = new DatabaseEntry();
oprStatus = std_cursor.getSearchKey(key, data, LockMode.DEFAULT);
while (oprStatus == OperationStatus.SUCCESS) {
String s = new String(data.getData());
if (!(resultIndices.contains(Integer.parseInt(s)))) {
resultIndices.add(Integer.parseInt(s));
}
oprStatus = std_cursor.getNextDup(key, data, LockMode.DEFAULT);
}
}
} else {
for (int n = 5; n > Integer.parseInt(query); n--) {
String searchkey = new String();
searchkey = n + ".0";
DatabaseEntry key = new DatabaseEntry();
DatabaseEntry data = new DatabaseEntry();
oprStatus = std_cursor.getFirst(key, data, LockMode.DEFAULT);
key.setData(searchkey.getBytes());
key.setSize(searchkey.length());
data = new DatabaseEntry();
oprStatus = std_cursor.getSearchKey(key, data, LockMode.DEFAULT);
while (oprStatus == OperationStatus.SUCCESS) {
String s = new String(data.getData());
if (!(resultIndices.contains(Integer.parseInt(s)))) {
resultIndices.add(Integer.parseInt(s));
}
oprStatus = std_cursor.getNextDup(key, data, LockMode.DEFAULT);
}
}
}
}
/** Close all stores (closing a store automatically closes its indices). */
public void close() throws DatabaseException {
// Close secondary databases, then primary databases.
supplierByCityDb.close();
shipmentByPartDb.close();
shipmentBySupplierDb.close();
partDb.close();
supplierDb.close();
shipmentDb.close();
// And don't forget to close the catalog and the environment.
javaCatalog.close();
env.close();
}
public void populateHistory(Database dbp) {
Histrec hrec = new Histrec();
hrec.set_amount(10);
byte[] arr = new byte[4]; // sizeof(int)
int i;
DatabaseEntry kdbt = new DatabaseEntry(arr);
kdbt.setSize(arr.length);
DatabaseEntry ddbt = new DatabaseEntry(hrec.data);
ddbt.setSize(hrec.data.length);
try {
for (i = 1; i <= history; i++) {
kdbt.setRecordNumber(i);
hrec.set_aid(random_id(ACCOUNT));
hrec.set_bid(random_id(BRANCH));
hrec.set_tid(random_id(TELLER));
dbp.append(null, kdbt, ddbt);
}
} catch (DatabaseException dbe) {
errExit(dbe, "Failure initializing history file");
}
}
public void run() {
double gtps, itps;
int n, ret;
long start_time, end_time;
//
// Open the database files.
//
int err;
try {
DatabaseConfig config = new DatabaseConfig();
config.setTransactional(true);
adb = dbenv.openDatabase(null, "account", null, config);
bdb = dbenv.openDatabase(null, "branch", null, config);
tdb = dbenv.openDatabase(null, "teller", null, config);
hdb = dbenv.openDatabase(null, "history", null, config);
} catch (DatabaseException dbe) {
TpcbExample.errExit(dbe, "Open of db files failed");
} catch (FileNotFoundException fnfe) {
TpcbExample.errExit(fnfe, "Open of db files failed, missing file");
}
start_time = (new Date()).getTime();
for (txns = n = ntxns, failed = 0; n-- > 0; ) if ((ret = txn()) != 0) failed++;
end_time = (new Date()).getTime();
if (end_time == start_time) end_time++;
System.out.println(
getName()
+ ": "
+ (long) txns
+ " txns: "
+ failed
+ " failed, "
+ TpcbExample.showRounded((txns - failed) / (double) (end_time - start_time), 2)
+ " TPS");
try {
adb.close();
bdb.close();
tdb.close();
hdb.close();
} catch (DatabaseException dbe2) {
TpcbExample.errExit(dbe2, "Close of db files failed");
}
}
@After
public void tearDown() {
try {
if (index1 != null) {
index1.close();
}
if (index2 != null) {
index2.close();
}
if (store1 != null) {
store1.close();
}
if (store2 != null) {
store2.close();
}
if (catalog != null) {
catalog.close();
}
if (env != null) {
env.close();
}
} catch (Exception e) {
System.out.println("Ignored exception during tearDown: " + e);
} finally {
/* Ensure that GC can cleanup. */
env = null;
testEnv = null;
catalog = null;
store1 = null;
store2 = null;
index1 = null;
index2 = null;
factory = null;
storeMap1 = null;
storeMap2 = null;
indexMap1 = null;
indexMap2 = null;
}
}
public void testReadOnlyEmptyCatalog() throws Exception {
String file = "catalog.db";
/* Create an empty database. */
DatabaseConfig config = new DatabaseConfig();
config.setAllowCreate(true);
DbCompat.setTypeBtree(config);
Database db = DbCompat.testOpenDatabase(env, null, file, null, config);
db.close();
/* Open the empty database read-only. */
config.setAllowCreate(false);
config.setReadOnly(true);
db = DbCompat.testOpenDatabase(env, null, file, null, config);
/* Expect exception when creating the catalog. */
try {
new StoredClassCatalog(db);
fail();
} catch (IllegalStateException e) {
}
db.close();
}
/** Closes the database. */
private void close() throws Exception {
if (catalog != null) {
catalog.close();
catalog = null;
}
if (db != null) {
db.close();
db = null;
}
if (env != null) {
env.close();
env = null;
}
}
/**
* Generic query process
*
* @param query contains parsed query for process
* @param db_name contains database to query
* @param indices passes the indices that store the result
* @throws DatabaseException when BerkeleyDB passes errors
* @throws FileNotFoundException when respective .idx or .txt value not found
*/
private void queryDB(String query, String db_name, ArrayList<Integer> indices)
throws DatabaseException, FileNotFoundException {
OperationStatus oprStatus;
Database std_db = new Database(db_name, null, null);
Cursor std_cursor = std_db.openCursor(null, null); // Create new cursor object
DatabaseEntry key = new DatabaseEntry();
DatabaseEntry data = new DatabaseEntry();
key.setData(query.getBytes());
key.setSize(query.length());
// Returns OperationStatus
oprStatus = std_cursor.getSearchKey(key, data, LockMode.DEFAULT);
while (oprStatus == OperationStatus.SUCCESS) {
String s = new String(data.getData());
if (!(indices.contains(Integer.parseInt(s)))) {
indices.add(Integer.parseInt(s));
}
oprStatus = std_cursor.getNextDup(key, data, LockMode.DEFAULT);
}
std_cursor.close();
std_db.close();
}
/*
* void return type since error conditions are propogated
* via exceptions.
*/
private void printStocks(Database db) throws DeadlockException, DatabaseException {
Cursor dbc = db.openCursor(null, null);
System.out.println("\tSymbol\tPrice");
System.out.println("\t======\t=====");
DatabaseEntry key = new DatabaseEntry();
DatabaseEntry data = new DatabaseEntry();
OperationStatus ret;
for (ret = dbc.getFirst(key, data, LockMode.DEFAULT);
ret == OperationStatus.SUCCESS;
ret = dbc.getNext(key, data, LockMode.DEFAULT)) {
String keystr = new String(key.getData(), key.getOffset(), key.getSize());
String datastr = new String(data.getData(), data.getOffset(), data.getSize());
System.out.println("\t" + keystr + "\t" + datastr);
}
dbc.close();
}
public void populateTable(Database dbp, int start_id, int balance, int nrecs, String msg) {
Defrec drec = new Defrec();
DatabaseEntry kdbt = new DatabaseEntry(drec.data);
kdbt.setSize(4); // sizeof(int)
DatabaseEntry ddbt = new DatabaseEntry(drec.data);
ddbt.setSize(drec.data.length); // uses whole array
try {
for (int i = 0; i < nrecs; i++) {
kdbt.setRecordNumber(start_id + (int) i);
drec.set_balance(balance);
dbp.putNoOverwrite(null, kdbt, ddbt);
}
} catch (DatabaseException dbe) {
System.err.println("Failure initializing " + msg + " file: " + dbe.toString());
System.exit(1);
}
}
public static Database buildtertiary(Database std) {
try {
// configure new database instance
io.deleteFile("tertiarydb");
DatabaseConfig dbConfig = new DatabaseConfig();
dbConfig.setType(DatabaseType.HASH);
dbConfig.setAllowCreate(true);
dbConfig.setUnsortedDuplicates(true);
Database tdb = new Database("tertiarydb", null, dbConfig);
// configure cursors and entries
Cursor stdCurs = std.openCursor(null, null);
Cursor tCurs = tdb.openCursor(null, null);
DatabaseEntry stdKey = new DatabaseEntry();
DatabaseEntry stdData = new DatabaseEntry();
DatabaseEntry tKey = new DatabaseEntry();
DatabaseEntry tData = new DatabaseEntry();
// extract from linearly constructed database to populate <song>,<users> table, making
// use of songs grouped by id
String currUsers = "";
String prevID = "default";
boolean firstIter = true;
while (stdCurs.getNext(stdKey, stdData, LockMode.DEFAULT) == OperationStatus.SUCCESS) {
// get rating data from current row
String[] currIDUser = (new String(stdKey.getData())).split(",");
String currID = currIDUser[0].trim();
String currUser = currIDUser[1].trim();
String currRating = (new String(stdData.getData()));
stdKey.setData(null);
stdData.setData(null);
if (currID.equals(prevID) || firstIter) {
// concatenate new username with current string
currUsers += "(" + currUser + "," + currRating + ")";
} else if (!firstIter) {
// insert completed <usernames> into table under key <song id>
tKey.setData(prevID.getBytes());
tData.setData(currUsers.substring(0, currUsers.length()).getBytes());
tCurs.put(tKey, tData);
tKey.setData(null);
tData.setData(null);
// DEBUG:
// System.out.println(prevID+","+currUsers.substring(0, currUsers.length()-1));
// start the new <usernames> for the next song (in currID)
currUsers = "(" + currUser + "," + currRating + ")";
}
prevID = currID;
firstIter = false;
}
// repeat iteration for last song
tKey.setData(prevID.getBytes());
tData.setData(currUsers.substring(0, currUsers.length()).getBytes());
tCurs.put(tKey, tData);
tKey.setData(null);
tData.setData(null);
// DEBUG:
// io.debugread(tdb);
tCurs.close();
return tdb;
} catch (Exception e) {
System.out.println(" error creating <song>,<users> tertiary table\n");
System.out.println(e.getMessage());
}
return null; // should never happen
}
public static String top3(String line, Database secdb, Database tdb)
throws DatabaseException, FileNotFoundException {
// configure sqSum db for keeping track of cumulative squaresums
io.deleteFile("sqSumdb");
DatabaseConfig dbConfig = new DatabaseConfig();
dbConfig.setType(DatabaseType.HASH);
dbConfig.setAllowCreate(true);
dbConfig.setUnsortedDuplicates(true);
Database sqSumdb = new Database("sqSumdb", null, dbConfig);
Cursor sqSumCurs = sqSumdb.openCursor(null, null);
DatabaseEntry sqSumKey = new DatabaseEntry();
DatabaseEntry sqSumData = new DatabaseEntry();
Cursor secCurs = secdb.openCursor(null, null);
Cursor tCurs = tdb.openCursor(null, null);
DatabaseEntry secKey = new DatabaseEntry();
DatabaseEntry secData = new DatabaseEntry();
DatabaseEntry tKey = new DatabaseEntry();
DatabaseEntry tData = new DatabaseEntry();
// get input song users and ratings
tKey.setData(line.getBytes());
if (tCurs.getSearchKey(tKey, tData, LockMode.DEFAULT) == OperationStatus.SUCCESS) {
// for each user in input song, get songs and ratings
HashMap<String, String> iRatings = parseBrace(new String(tData.getData()));
for (String user : iRatings.keySet()) {
// get current user's rating for input song
int inputRating = Integer.parseInt(iRatings.get(user));
// get songs and ratings for user
secKey.setData(null);
secData.setData(null);
secKey.setData(user.getBytes());
if (secCurs.getSearchKey(secKey, secData, null) == OperationStatus.SUCCESS) {
// for each song rated by user
HashMap<String, String> currSongs = parseBrace(new String(secData.getData()));
for (String song : currSongs.keySet()) {
// input song should not be compared to itself, otherwise get the users and ratings for
// it
if (song.equals(line)) continue;
// current user's rating for song under inspection
int songRating = Integer.parseInt(currSongs.get(song));
sqSumKey.setData(null);
sqSumData.setData(null);
sqSumKey.setData(song.getBytes());
if (sqSumCurs.getSearchKey(sqSumKey, sqSumData, null) == OperationStatus.SUCCESS) {
// if song is already in sqSum,N db, add to it
String[] sumN = (new String(sqSumData.getData())).split(",");
// add the new square sum to the previous and increment N
int sum = Integer.parseInt(sumN[0]);
int N = Integer.parseInt(sumN[1]);
sum += (inputRating - songRating) * (inputRating - songRating);
N += 1;
String encoded = Integer.toString(sum) + "," + Integer.toString(N);
// remove old entry for current song and replace it with the new one
sqSumCurs.delete();
sqSumKey.setData(null);
sqSumData.setData(null);
sqSumKey.setData(song.getBytes());
sqSumData.setData(encoded.getBytes());
sqSumdb.put(null, sqSumKey, sqSumData);
} else {
// if song in not already in sqSum,N db, create it
int sum = (inputRating - songRating) * (inputRating - songRating);
int N = 1;
String encoded = Integer.toString(sum) + "," + Integer.toString(N);
sqSumKey.setData(null);
sqSumData.setData(null);
sqSumKey.setData(song.getBytes());
sqSumData.setData(encoded.getBytes());
sqSumdb.put(null, sqSumKey, sqSumData);
}
}
} else {
System.out.println("ERROR: user " + user + " not in secondary database.");
}
}
} else {
return line + " has not been rated by any user.";
}
// DEBUG
// io.debugread(sqSumdb);
// calculate distance for each song in, inserting into the top 3 spots as we iterate through
String ranked = rank(sqSumdb);
return line + ", " + ranked;
}
//
// Initialize the database to the number of accounts, branches,
// history records, and tellers given to the constructor.
//
public void populate() {
Database dbp = null;
int err;
int balance, idnum;
int end_anum, end_bnum, end_tnum;
int start_anum, start_bnum, start_tnum;
int h_nelem;
idnum = BEGID;
balance = 500000;
h_nelem = accounts;
try {
DatabaseConfig config = new DatabaseConfig();
config.setType(DatabaseType.HASH);
config.setHashNumElements(h_nelem);
config.setAllowCreate(true);
dbp = dbenv.openDatabase(null, "account", null, config);
} catch (Exception e1) {
// can be DatabaseException or FileNotFoundException
errExit(e1, "Open of account file failed");
}
start_anum = idnum;
populateTable(dbp, idnum, balance, h_nelem, "account");
idnum += h_nelem;
end_anum = idnum - 1;
try {
dbp.close();
} catch (DatabaseException e2) {
errExit(e2, "Account file close failed");
}
if (verbose)
System.out.println(
"Populated accounts: " + String.valueOf(start_anum) + " - " + String.valueOf(end_anum));
//
// Since the number of branches is very small, we want to use very
// small pages and only 1 key per page. This is the poor-man's way
// of getting key locking instead of page locking.
//
h_nelem = (int) branches;
try {
DatabaseConfig config = new DatabaseConfig();
config.setType(DatabaseType.HASH);
config.setHashNumElements(h_nelem);
config.setHashFillFactor(1);
config.setPageSize(512);
config.setAllowCreate(true);
dbp = dbenv.openDatabase(null, "branch", null, config);
} catch (Exception e3) {
// can be DatabaseException or FileNotFoundException
errExit(e3, "Branch file create failed");
}
start_bnum = idnum;
populateTable(dbp, idnum, balance, h_nelem, "branch");
idnum += h_nelem;
end_bnum = idnum - 1;
try {
dbp.close();
} catch (DatabaseException dbe4) {
errExit(dbe4, "Close of branch file failed");
}
if (verbose)
System.out.println(
"Populated branches: " + String.valueOf(start_bnum) + " - " + String.valueOf(end_bnum));
//
// In the case of tellers, we also want small pages, but we'll let
// the fill factor dynamically adjust itself.
//
h_nelem = (int) tellers;
try {
DatabaseConfig config = new DatabaseConfig();
config.setType(DatabaseType.HASH);
config.setHashNumElements(h_nelem);
config.setHashFillFactor(0);
config.setPageSize(512);
config.setAllowCreate(true);
dbp = dbenv.openDatabase(null, "teller", null, config);
} catch (Exception e5) {
// can be DatabaseException or FileNotFoundException
errExit(e5, "Teller file create failed");
}
start_tnum = idnum;
populateTable(dbp, idnum, balance, h_nelem, "teller");
idnum += h_nelem;
end_tnum = idnum - 1;
try {
dbp.close();
} catch (DatabaseException e6) {
errExit(e6, "Close of teller file failed");
}
if (verbose)
System.out.println(
"Populated tellers: " + String.valueOf(start_tnum) + " - " + String.valueOf(end_tnum));
try {
DatabaseConfig config = new DatabaseConfig();
config.setType(DatabaseType.RECNO);
config.setRecordLength(HISTORY_LEN);
config.setAllowCreate(true);
dbp = dbenv.openDatabase(null, "history", null, config);
} catch (Exception e7) {
// can be DatabaseException or FileNotFoundException
errExit(e7, "Create of history file failed");
}
populateHistory(dbp);
try {
dbp.close();
} catch (DatabaseException e8) {
errExit(e8, "Close of history file failed");
}
}
/**
* Prints the results obtained by BerkeleyDB
*
* @throws DatabaseException whenever BerkeleyDB is violateed
* @throws FileNotFoundException when .idx files not found or .txt files not found.
* @throws ParseException when ParseDouble returns an error.
*/
private void printResults() throws DatabaseException, FileNotFoundException, ParseException {
// System.out.println("Num of indices before pprice rdate constraints: " + indices.size());
if (indices.isEmpty()) {
System.out.println("+=-=-=-=-=-=-=-=-=-=-=-=-=+");
System.out.println("No results matching given query.");
System.out.println("+=-=-=-=-=-=-=-=-=-=-=-=-=+");
}
Integer counter = 0;
for (Integer index : indices) {
OperationStatus oprStatus;
Database std_db = new Database("rw.idx", null, null);
Cursor std_cursor = std_db.openCursor(null, null); // Create new cursor object
DatabaseEntry key = new DatabaseEntry();
DatabaseEntry data = new DatabaseEntry();
Product product = new Product();
Review review = new Review();
String searchkey = index.toString().toLowerCase();
key.setData(searchkey.getBytes());
key.setSize(searchkey.length());
// Returns OperationStatus
oprStatus = std_cursor.getSearchKey(key, data, LockMode.DEFAULT);
Bill:
{
if (oprStatus == OperationStatus.SUCCESS) {
String s = new String(data.getData());
load_data(product, review, s);
/** Filters low priority queue for pprice / rdate processes. */
GenericStack<String> tmplow = new GenericStack<String>(lowpriorities);
while (!tmplow.isEmpty()) {
String subquery = tmplow.pop();
if (subquery.matches("pprice.*")) {
Double value =
Double.parseDouble(
subquery
.replace("pprice", "")
.replace(">", "")
.replace("=", "")
.replace("<", ""));
if (product.getPrice().equals("unknown")) break Bill;
if (subquery.matches("pprice<.*")
&& !(Double.parseDouble(product.getPrice()) > value)) continue;
else if (subquery.matches("pprice=.*")
&& !(Double.parseDouble(product.getPrice()) == value)) continue;
else if (subquery.matches("pprice>.*")
&& !(Double.parseDouble(product.getPrice()) < value)) continue;
else break Bill;
} else if (subquery.matches("rdate.*")) {
String comparator = subquery.substring(5, 6);
DateFormat df = new SimpleDateFormat("yyyy/MM/dd hh:mm:ss");
Date valuedate = df.parse(subquery.substring(6) + " 00:00:00");
long valuedatedoesntmatataer =
(valuedate.getTime() / 1000)
- 25200; // delay set by 7hours - timezone difference.
switch (comparator) {
case "<":
if (!(Long.parseLong(review.getTime()) < valuedatedoesntmatataer)) {
break Bill;
} else {
break;
}
case ">":
if (!(Long.parseLong(review.getTime()) > valuedatedoesntmatataer)) {
break Bill;
} else {
break;
}
case "=":
if (!(Long.parseLong(review.getTime()) == valuedatedoesntmatataer)) {
break Bill;
} else {
break;
}
default:
break Bill;
}
}
}
// System.out.print(" "+ index +" ");
product.print();
review.print();
counter++;
}
std_cursor.close();
std_db.close();
}
}
System.out.println("+=-=-=-=-=-=-=-=-=-=-=-=-=+");
System.out.println("Total records found: " + counter);
System.out.println("+=-=-=-=-=-=-=-=-=-=-=-=-=+");
}
public int doloop() throws DatabaseException {
Database db = null;
for (; ; ) {
if (db == null) {
DatabaseConfig dbconf = new DatabaseConfig();
dbconf.setType(DatabaseType.BTREE);
if (dbenv.getIsMaster()) {
/*
* Open database allowing create only if this is a master
* database. A client database uses polling to attempt
* to open the database without allowing create until
* it is successful.
*
* This polling logic for allowing create can be
* simplified under some circumstances. For example, if
* the application can be sure a database is already
* there, it would never need to open it allowing create.
*/
dbconf.setAllowCreate(true);
}
dbconf.setTransactional(true);
try {
db = dbenv.openDatabase(null, RepConfig.progname, null, dbconf);
} catch (java.io.FileNotFoundException e) {
System.err.println("no stock database available yet.");
if (db != null) {
db.close(true);
db = null;
}
try {
Thread.sleep(RepConfig.SLEEPTIME);
} catch (InterruptedException ie) {
}
continue;
}
}
BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
/* Listen for input, and add it to the database. */
System.out.print("QUOTESERVER");
if (!dbenv.getIsMaster()) System.out.print("(read-only)");
System.out.print("> ");
System.out.flush();
String nextline = null;
try {
nextline = stdin.readLine();
} catch (IOException ioe) {
System.err.println("Unable to get data from stdin");
break;
}
String[] words = nextline.split("\\s");
/* A blank line causes the DB to be dumped to stdout. */
if (words.length == 0 || (words.length == 1 && words[0].length() == 0)) {
try {
if (dbenv.getInClientSync())
System.err.println("Cannot read data during client initialization - please try again.");
else printStocks(db);
} catch (DeadlockException de) {
continue;
} catch (DatabaseException e) {
/*
* This could be DB_REP_HANDLE_DEAD, which
* should close the database and continue.
*/
System.err.println("Got db exception reading replication" + "DB: " + e);
System.err.println(
"Expected if it was due to a dead "
+ "replication handle, otherwise an unexpected error.");
db.close(true); /* Close no sync. */
db = null;
continue;
}
continue;
}
if (words.length == 1
&& (words[0].compareToIgnoreCase("quit") == 0
|| words[0].compareToIgnoreCase("exit") == 0)) {
dbenv.setAppFinished(true);
break;
} else if (words.length != 2) {
System.err.println("Format: TICKER VALUE");
continue;
}
if (!dbenv.getIsMaster()) {
System.err.println("Can't update client.");
continue;
}
DatabaseEntry key = new DatabaseEntry(words[0].getBytes());
DatabaseEntry data = new DatabaseEntry(words[1].getBytes());
db.put(null, key, data);
}
if (db != null) db.close(true);
return 0;
}
//
// XXX Figure out the appropriate way to pick out IDs.
//
int txn() {
Cursor acurs = null;
Cursor bcurs = null;
Cursor hcurs = null;
Cursor tcurs = null;
Transaction t = null;
Defrec rec = new Defrec();
Histrec hrec = new Histrec();
int account, branch, teller;
DatabaseEntry d_dbt = new DatabaseEntry();
DatabaseEntry d_histdbt = new DatabaseEntry();
DatabaseEntry k_dbt = new DatabaseEntry();
DatabaseEntry k_histdbt = new DatabaseEntry();
account = TpcbExample.this.random_id(TpcbExample.ACCOUNT);
branch = TpcbExample.this.random_id(TpcbExample.BRANCH);
teller = TpcbExample.this.random_id(TpcbExample.TELLER);
// The history key will not actually be retrieved,
// but it does need to be set to something.
byte[] hist_key = new byte[4];
k_histdbt.setData(hist_key);
k_histdbt.setSize(4 /* == sizeof(int)*/);
byte[] key_bytes = new byte[4];
k_dbt.setData(key_bytes);
k_dbt.setSize(4 /* == sizeof(int)*/);
d_dbt.setData(rec.data);
d_dbt.setUserBuffer(rec.length(), true);
hrec.set_aid(account);
hrec.set_bid(branch);
hrec.set_tid(teller);
hrec.set_amount(10);
// Request 0 bytes since we're just positioning.
d_histdbt.setPartial(0, 0, true);
// START PER-TRANSACTION TIMING.
//
// Technically, TPCB requires a limit on response time, you only
// get to count transactions that complete within 2 seconds.
// That's not an issue for this sample application -- regardless,
// here's where the transaction begins.
try {
t = dbenv.beginTransaction(null, null);
acurs = adb.openCursor(t, null);
bcurs = bdb.openCursor(t, null);
tcurs = tdb.openCursor(t, null);
hcurs = hdb.openCursor(t, null);
// Account record
k_dbt.setRecordNumber(account);
if (acurs.getSearchKey(k_dbt, d_dbt, null) != OperationStatus.SUCCESS)
throw new Exception("acurs get failed");
rec.set_balance(rec.get_balance() + 10);
acurs.putCurrent(d_dbt);
// Branch record
k_dbt.setRecordNumber(branch);
if (bcurs.getSearchKey(k_dbt, d_dbt, null) != OperationStatus.SUCCESS)
throw new Exception("bcurs get failed");
rec.set_balance(rec.get_balance() + 10);
bcurs.putCurrent(d_dbt);
// Teller record
k_dbt.setRecordNumber(teller);
if (tcurs.getSearchKey(k_dbt, d_dbt, null) != OperationStatus.SUCCESS)
throw new Exception("ccurs get failed");
rec.set_balance(rec.get_balance() + 10);
tcurs.putCurrent(d_dbt);
// History record
d_histdbt.setPartial(0, 0, false);
d_histdbt.setData(hrec.data);
d_histdbt.setUserBuffer(hrec.length(), true);
if (hdb.append(t, k_histdbt, d_histdbt) != OperationStatus.SUCCESS)
throw new DatabaseException("put failed");
acurs.close();
acurs = null;
bcurs.close();
bcurs = null;
tcurs.close();
tcurs = null;
hcurs.close();
hcurs = null;
// null out t in advance; if the commit fails,
// we don't want to abort it in the catch clause.
Transaction tmptxn = t;
t = null;
tmptxn.commit();
// END TIMING
return (0);
} catch (Exception e) {
try {
if (acurs != null) acurs.close();
if (bcurs != null) bcurs.close();
if (tcurs != null) tcurs.close();
if (hcurs != null) hcurs.close();
if (t != null) t.abort();
} catch (DatabaseException dbe) {
// not much we can do here.
}
if (TpcbExample.this.verbose) {
System.out.println(
"Transaction A="
+ String.valueOf(account)
+ " B="
+ String.valueOf(branch)
+ " T="
+ String.valueOf(teller)
+ " failed");
System.out.println("Reason: " + e.toString());
}
return (-1);
}
}
public static String rank(Database sqSumdb) throws DatabaseException {
Cursor sqSumCurs = sqSumdb.openCursor(null, null);
DatabaseEntry sqSumKey = new DatabaseEntry();
DatabaseEntry sqSumData = new DatabaseEntry();
// initialize the ids and distances to be replaced by the loop below
String firstIDs = "";
String secondIDs = "";
String thirdIDs = "";
double inf = Integer.MAX_VALUE;
double firstDist = inf;
double secondDist = inf;
double thirdDist = inf;
// initialize containers for rating data for each song before distance calculation
boolean firstFilled = true;
boolean secondFilled = true;
boolean thirdFilled = true;
while (sqSumCurs.getNext(sqSumKey, sqSumData, LockMode.DEFAULT) == OperationStatus.SUCCESS) {
// get song id
String id = (new String(sqSumKey.getData()));
String[] sumN = (new String(sqSumData.getData())).split(",");
sqSumKey.setData(null);
sqSumData.setData(null);
double sum = Integer.parseInt(sumN[0]);
double N = Integer.parseInt(sumN[1]);
double dist = Math.sqrt(sum) / N;
if (dist != inf) {
if (dist < firstDist || !firstFilled) {
// set thirdID and thirdDist
thirdIDs = secondIDs;
thirdDist = secondDist;
// set secondID and secondDist
secondIDs = firstIDs;
secondDist = firstDist;
// set firstID and firstDist
firstIDs = id;
firstDist = dist;
if (firstFilled) {
if (secondFilled) {
thirdFilled = true;
}
secondFilled = true;
}
firstFilled = true;
} else if ((dist < secondDist || !secondFilled) && dist != firstDist) {
// set thirdID and thirdDist
thirdIDs = secondIDs;
thirdDist = secondDist;
// set secondID and secondDist
secondIDs = id;
secondDist = dist;
if (secondFilled) {
thirdFilled = true;
}
secondFilled = true;
} else if ((dist < thirdDist || !thirdFilled) && dist != firstDist && dist != secondDist) {
// set thirdID and thirdDist
thirdIDs = id;
thirdDist = dist;
thirdFilled = true;
} else if (dist == firstDist) {
// append fistID
firstIDs += ", " + id;
} else if (dist == secondDist) {
// append secondID
secondIDs += ", " + id;
} else if (dist == thirdDist) {
// append thirdID
thirdIDs += ", " + id;
}
}
}
if (firstIDs.equals("")) firstIDs = "<no 1st place>";
if (secondIDs.equals("")) secondIDs = "<no 2nd place>";
if (thirdIDs.equals("")) thirdIDs = "<no 3rd place>";
return firstIDs + ", " + secondIDs + ", " + thirdIDs;
}
@Test
public void testDraining() throws Exception {
EnvironmentConfig masterConfig = makeBasicConfig();
masterConfig.setReplicationLimit(100000000);
ReplicationManagerSiteConfig site = new ReplicationManagerSiteConfig("localhost", masterPort);
site.setLocalSite(true);
site.setLegacy(true);
masterConfig.addReplicationManagerSite(site);
site = new ReplicationManagerSiteConfig("localhost", clientPort);
site.setLegacy(true);
masterConfig.addReplicationManagerSite(site);
site = new ReplicationManagerSiteConfig("localhost", client2Port);
site.setLegacy(true);
masterConfig.addReplicationManagerSite(site);
site = new ReplicationManagerSiteConfig("localhost", client3Port);
site.setLegacy(true);
masterConfig.addReplicationManagerSite(site);
Environment master = new Environment(mkdir("master"), masterConfig);
setTimeouts(master);
// Prevent connection retries, so that all connections
// originate from clients
master.setReplicationTimeout(ReplicationTimeoutType.CONNECTION_RETRY, Integer.MAX_VALUE);
master.replicationManagerStart(2, ReplicationManagerStartPolicy.REP_MASTER);
DatabaseConfig dc = new DatabaseConfig();
dc.setTransactional(true);
dc.setAllowCreate(true);
dc.setType(DatabaseType.BTREE);
dc.setPageSize(4096);
Database db = master.openDatabase(null, "test.db", null, dc);
DatabaseEntry key = new DatabaseEntry();
DatabaseEntry value = new DatabaseEntry();
value.setData(data);
for (int i = 0; ((BtreeStats) db.getStats(null, null)).getPageCount() < 500; i++) {
String k = "The record number is: " + i;
key.setData(k.getBytes());
db.put(null, key, value);
}
// tell fiddler to stop reading once it sees a PAGE message
Socket s = new Socket("localhost", mgrPort);
OutputStreamWriter w = new OutputStreamWriter(s.getOutputStream());
String path1 = "{" + masterPort + "," + clientPort + "}"; // looks like {6000,6001}
w.write("{init," + path1 + ",page_clog}\r\n");
w.flush();
BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream()));
br.readLine();
assertEquals("ok", br.readLine());
// create client
//
EnvironmentConfig ec = makeBasicConfig();
site = new ReplicationManagerSiteConfig("localhost", clientPort);
site.setLocalSite(true);
site.setLegacy(true);
ec.addReplicationManagerSite(site);
site = new ReplicationManagerSiteConfig("localhost", masterPort);
site.setLegacy(true);
ec.addReplicationManagerSite(site);
site = new ReplicationManagerSiteConfig("localhost", client2Port);
site.setLegacy(true);
ec.addReplicationManagerSite(site);
site = new ReplicationManagerSiteConfig("localhost", client3Port);
site.setLegacy(true);
ec.addReplicationManagerSite(site);
Environment client = new Environment(mkdir("client"), ec);
setTimeouts(client);
client.replicationManagerStart(1, ReplicationManagerStartPolicy.REP_CLIENT);
// wait til it gets stuck
Thread.sleep(5000); // FIXME
// Do the same for another client, because the master has 2
// msg processing threads. (It's no longer possible to
// configure just 1.)
String path2 = "{" + masterPort + "," + client2Port + "}";
w.write("{init," + path2 + ",page_clog}\r\n");
w.flush();
br = new BufferedReader(new InputStreamReader(s.getInputStream()));
br.readLine();
assertEquals("ok", br.readLine());
ec = makeBasicConfig();
site = new ReplicationManagerSiteConfig("localhost", client2Port);
site.setLocalSite(true);
site.setLegacy(true);
ec.addReplicationManagerSite(site);
site = new ReplicationManagerSiteConfig("localhost", masterPort);
site.setLegacy(true);
ec.addReplicationManagerSite(site);
site = new ReplicationManagerSiteConfig("localhost", clientPort);
site.setLegacy(true);
ec.addReplicationManagerSite(site);
site = new ReplicationManagerSiteConfig("localhost", client3Port);
site.setLegacy(true);
ec.addReplicationManagerSite(site);
Environment client2 = new Environment(mkdir("client2"), ec);
setTimeouts(client2);
client2.replicationManagerStart(1, ReplicationManagerStartPolicy.REP_CLIENT);
// wait til it gets stuck
Thread.sleep(5000);
// With the connection stuck, the master cannot write out log
// records for new "live" transactions. Knowing we didn't
// write the record, we should not bother waiting for an ack
// that cannot possibly arrive; so we should simply return
// quickly. The duration should be very quick, but anything
// less than the ack timeout indicates correct behavior (in
// case this test runs on a slow, overloaded system).
//
long startTime = System.currentTimeMillis();
key.setData("one extra record".getBytes());
db.put(null, key, value);
long duration = System.currentTimeMillis() - startTime;
assertTrue("txn duration: " + duration, duration < 29000);
System.out.println("txn duration: " + duration);
db.close();
// Tell fiddler to close the connections. That should trigger
// us to abandon the timeout. Then create another client and
// see that it can complete its internal init quickly. Since
// we have limited threads at the master, this demonstrates
// that they were abandoned.
//
path1 = "{" + clientPort + "," + masterPort + "}"; // looks like {6001,6000}
w.write("{" + path1 + ",shutdown}\r\n");
w.flush();
assertEquals("ok", br.readLine());
path2 = "{" + client2Port + "," + masterPort + "}"; // looks like {6001,6000}
w.write("{" + path2 + ",shutdown}\r\n");
w.flush();
assertEquals("ok", br.readLine());
ec = makeBasicConfig();
site = new ReplicationManagerSiteConfig("localhost", client3Port);
site.setLocalSite(true);
site.setLegacy(true);
ec.addReplicationManagerSite(site);
site = new ReplicationManagerSiteConfig("localhost", masterPort);
site.setLegacy(true);
ec.addReplicationManagerSite(site);
site = new ReplicationManagerSiteConfig("localhost", clientPort);
site.setLegacy(true);
ec.addReplicationManagerSite(site);
site = new ReplicationManagerSiteConfig("localhost", client2Port);
site.setLegacy(true);
ec.addReplicationManagerSite(site);
EventHandler clientMonitor = new EventHandler();
ec.setEventHandler(clientMonitor);
Environment client3 = new Environment(mkdir("client3"), ec);
setTimeouts(client3);
startTime = System.currentTimeMillis();
client3.replicationManagerStart(2, ReplicationManagerStartPolicy.REP_CLIENT);
clientMonitor.await();
duration = System.currentTimeMillis() - startTime;
assertTrue("sync duration: " + duration, duration < 20000); // 20 seconds should be plenty
client3.close();
master.close();
w.write("shutdown\r\n");
w.flush();
assertEquals("ok", br.readLine());
s.close();
}