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");
}
}
/**
* 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);
}
}
}
}
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 boolean createSecondaryKey(
com.sleepycat.db.SecondaryDatabase secondary,
com.sleepycat.db.DatabaseEntry key,
com.sleepycat.db.DatabaseEntry value,
com.sleepycat.db.DatabaseEntry result)
throws com.sleepycat.db.DatabaseException {
Ice.Communicator communicator = _store.communicator();
Ice.EncodingVersion encoding = _store.encoding();
ObjectRecord rec =
ObjectStore.unmarshalValue(value, communicator, encoding, _store.keepStats());
byte[] secondaryKey = marshalKey(rec.servant);
if (secondaryKey != null) {
result.setData(secondaryKey);
result.setSize(secondaryKey.length);
return true;
} else {
//
// Don't want to index this one
//
return false;
}
}
/**
* 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();
}
/**
* 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("+=-=-=-=-=-=-=-=-=-=-=-=-=+");
}
//
// 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);
}
}
