Examples with FormatableBitSet org.apache.derby.iapi.services.io.FormatableBitSet used on opensource projects

Example 36 with FormatableBitSet

use of org.apache.derby.iapi.services.io.FormatableBitSet in project derby by apache.

the class T_AccessFactory method updatelocks_0.

protected boolean updatelocks_0(TransactionController tc, int isolation_level) throws StandardException, T_Fail {
    // Create a 2 column row.
    T_AccessRow r1 = new T_AccessRow(2);
    SQLInteger c1 = new SQLInteger(1);
    SQLInteger c2 = new SQLInteger(100);
    r1.setCol(0, c1);
    r1.setCol(1, c2);
    // Create a heap conglomerate.
    long orig_conglomid = tc.createConglomerate(// create a heap conglomerate
    "heap", r1.getRowArray(), // column sort order not required for heap
    null, // default collation
    null, // default properties
    null, // not temporary
    TransactionController.IS_DEFAULT);
    // add rows 1 and 2
    ConglomerateController cc = tc.openConglomerate(orig_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
    // insert (1, 100)
    r1.setCol(0, new SQLInteger(1));
    r1.setCol(1, new SQLInteger(100));
    cc.insert(r1.getRowArray());
    // insert (2, 200)
    r1.setCol(0, new SQLInteger(2));
    r1.setCol(1, new SQLInteger(200));
    cc.insert(r1.getRowArray());
    // insert (3, 300)
    r1.setCol(0, new SQLInteger(3));
    r1.setCol(1, new SQLInteger(300));
    cc.insert(r1.getRowArray());
    cc.close();
    tc.commit();
    REPORT("(updatelocks ending.)");
    ScanController sc = tc.openScan(orig_conglomid, // don't hold
    false, (TransactionController.OPENMODE_FORUPDATE | TransactionController.OPENMODE_USE_UPDATE_LOCKS), TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, // all columns, all as objects
    (FormatableBitSet) null, // start position - first row in conglomerate
    null, // unused if start position is null.
    0, // qualifier - accept all rows
    null, // stop position - last row in conglomerate
    null, // unused if stop position is null.
    0);
    int key_value;
    boolean found_row_2 = false;
    while (sc.next()) {
        sc.fetch(r1.getRowArray());
        key_value = ((SQLInteger) r1.getCol(0)).getInt();
        switch(key_value) {
            case 1:
                {
                    // delete first row
                    sc.delete();
                    break;
                }
            case 2:
                {
                    // leave second alone - no update, lock will get coverted
                    // down.
                    found_row_2 = true;
                    break;
                }
            case 3:
                {
                    // update the third row.
                    T_AccessRow update_row = new T_AccessRow(2);
                    r1.setCol(0, new SQLInteger(30));
                    r1.setCol(1, new SQLInteger(3000));
                    sc.replace(r1.getRowArray(), null);
                    break;
                }
            default:
                {
                    throw T_Fail.testFailMsg("(updatelock) bad row value found in table.");
                }
        }
    }
    if (!found_row_2)
        throw T_Fail.testFailMsg("(updatelock) did not find row in first scan.");
    // reposition the scan
    sc.reopenScan(// start position - first row in conglomerate
    null, // unused if start position is null.
    0, // qualifier - accept all rows
    null, // stop position - last row in conglomerate
    null, // unused if stop position is null.
    0);
    found_row_2 = false;
    while (sc.next()) {
        sc.fetch(r1.getRowArray());
        key_value = ((SQLInteger) r1.getCol(0)).getInt();
        switch(key_value) {
            case 2:
                {
                    // leave second alone - no update, lock will get coverted
                    // down.
                    found_row_2 = true;
                    break;
                }
            case 30:
                {
                    // update the third row.
                    T_AccessRow update_row = new T_AccessRow(2);
                    r1.setCol(0, new SQLInteger(40));
                    r1.setCol(1, new SQLInteger(4000));
                    sc.replace(r1.getRowArray(), null);
                    break;
                }
            default:
                {
                    throw T_Fail.testFailMsg("(updatelock) bad row value found in table.");
                }
        }
    }
    if (!found_row_2)
        throw T_Fail.testFailMsg("(updatelock) did not find row in second scan.");
    sc.close();
    tc.commit();
    // try the scan after the first xact has completed.
    sc = tc.openScan(orig_conglomid, // don't hold
    false, (TransactionController.OPENMODE_FORUPDATE | TransactionController.OPENMODE_USE_UPDATE_LOCKS), TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, // all columns, all as objects
    (FormatableBitSet) null, // start position - first row in conglomerate
    null, // unused if start position is null.
    0, // qualifier - accept all rows
    null, // stop position - last row in conglomerate
    null, // unused if stop position is null.
    0);
    found_row_2 = false;
    while (sc.next()) {
        sc.fetch(r1.getRowArray());
        key_value = ((SQLInteger) r1.getCol(0)).getInt();
        switch(key_value) {
            case 2:
                {
                    // leave second alone - no update, lock will get coverted
                    // down.
                    found_row_2 = true;
                    break;
                }
            case 40:
                {
                    // update the third row.
                    T_AccessRow update_row = new T_AccessRow(2);
                    r1.setCol(0, new SQLInteger(30));
                    r1.setCol(1, new SQLInteger(3000));
                    sc.replace(r1.getRowArray(), null);
                    break;
                }
            default:
                {
                    throw T_Fail.testFailMsg("(updatelock) bad row value found in table.");
                }
        }
    }
    if (!found_row_2)
        throw T_Fail.testFailMsg("(updatelock) did not find row in first scan.");
    return (true);
}

Example 37 with FormatableBitSet

use of org.apache.derby.iapi.services.io.FormatableBitSet in project derby by apache.

the class T_AccessFactory method insert_bench.

// Simple insert into heap performance test
protected boolean insert_bench(TransactionController tc) throws StandardException, T_Fail {
    ConglomerateController cc = null;
    ScanController scan = null;
    long conglomid = -1;
    long before, after;
    // Create a row.
    T_AccessRow r1 = new T_AccessRow(1);
    long iter = 100;
    for (int numcols = 1; numcols < 101; numcols *= 10) {
        // Create a heap conglomerate.
        conglomid = tc.createConglomerate(// create a heap conglomerate
        "heap", // 1 SQLInteger() column template.
        new T_AccessRow(numcols).getRowArray(), // column sort order not required for heap
        null, // default collation
        null, // default properties
        null, // not temporary
        TransactionController.IS_DEFAULT);
        tc.commit();
        // Open the conglomerate.
        cc = tc.openConglomerate(conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
        for (int i = 0; i < numcols; i++) {
            r1.setCol(i, new SQLInteger(numcols));
        }
        // time before
        before = System.currentTimeMillis();
        for (int i = 0; i < iter; i++) {
            if (cc.insert(r1.getRowArray()) != 0)
                throw T_Fail.testFailMsg("(insert_bench) insert failed ");
        }
        // time after
        after = System.currentTimeMillis();
        REPORT("insert " + iter + " rows of " + numcols + " integer cols = " + (after - before) + " milliseconds.\n");
        // time before
        before = System.currentTimeMillis();
        for (int i = 0; i < iter; i++) {
            if (cc.insert(r1.getRowArray()) != 0)
                throw T_Fail.testFailMsg("(insert_bench) insert failed ");
        }
        // time after
        after = System.currentTimeMillis();
        REPORT("second insert " + iter + " rows of " + numcols + " integer cols = " + (after - before) + " milliseconds.\n");
        // Open a scan on the conglomerate.
        before = System.currentTimeMillis();
        scan = tc.openScan(conglomid, // don't hold
        false, // not for update
        0, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, // all columns, all as objects
        (FormatableBitSet) null, // start position - first row in conglomerate
        null, // unused if start position is null.
        0, // qualifier - accept all rows
        null, // stop position - last row in conglomerate
        null, // unused if stop position is null.
        0);
        // time before
        before = System.currentTimeMillis();
        // Iterate through and check that the rows are still there.
        while (scan.next()) {
            scan.fetch(r1.getRowArray());
        }
        // time after
        after = System.currentTimeMillis();
        REPORT("scan " + (2 * iter) + " rows of " + numcols + " integer cols = " + (after - before) + " milliseconds.\n");
        // Close the conglomerate.
        cc.close();
        tc.commit();
    }
    return (true);
}

Example 38 with FormatableBitSet

use of org.apache.derby.iapi.services.io.FormatableBitSet in project derby by apache.

the class T_AccessFactory method createBtree.

private long createBtree(TransactionController tc, long baseConglomId, boolean temporary) throws StandardException {
    // Create the properties for the index.
    // This method knows that there is just one column in the base table
    Properties indexProps = new Properties();
    indexProps.put("baseConglomerateId", Long.toString(baseConglomId));
    indexProps.put("nUniqueColumns", "1");
    indexProps.put("rowLocationColumn", "1");
    indexProps.put("nKeyFields", "2");
    // Open a scan on the base conglomerate which will return all rows.
    FormatableBitSet singleColumn = new FormatableBitSet(1);
    singleColumn.set(0);
    ScanController sc = tc.openScan(baseConglomId, false, // not for update
    0, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, // just the first column.
    singleColumn, null, 0, null, null, 0);
    // Create the template for the index. This method "knows" that
    // all rows in the base table have one IntCol
    T_AccessRow template = new T_AccessRow(2);
    SQLLongint col0 = new SQLLongint(0);
    RowLocation col1 = sc.newRowLocationTemplate();
    template.setCol(0, col0);
    template.setCol(1, col1);
    DataValueDescriptor[] baseRow = new DataValueDescriptor[1];
    baseRow[0] = col0;
    // Create a btree secondary index conglomerate.
    long iid = tc.createConglomerate("BTREE", template.getRowArray(), null, // default collation
    null, indexProps, temporary ? TransactionController.IS_TEMPORARY : TransactionController.IS_DEFAULT);
    // Open the index so we can stuff in index rows.
    ConglomerateController cc = tc.openConglomerate(iid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
    // build the index.
    while (sc.next()) {
        sc.fetch(baseRow);
        sc.fetchLocation(col1);
        cc.insert(template.getRowArray());
    }
    cc.close();
    return iid;
}

Example 39 with FormatableBitSet

use of org.apache.derby.iapi.services.io.FormatableBitSet in project derby by apache.

the class T_AccessFactory method readUncommitted.

/**
 * Test critical cases for read uncommitted.
 * <p>
 * test 1 - test heap fetch, delete and replace of row on page which does not exist.
 * test 2 - test heap fetch, delete and replace of row on page where row does not exist.
 *
 * @exception  StandardException  Standard exception policy.
 */
protected boolean readUncommitted(TransactionController tc) throws StandardException, T_Fail {
    REPORT("(readUncommitted)");
    /*
         * TEST 1 - test heap fetch of row on page which does not exist.
         * <p>
         * Do this by inserting a few pages worth of data and then deleting 
         * all the rows, while remembering the rowlocation of one of the pages.
         * You need to at least get to the 2nd page, because the 1st page is
         * never totally reclaimed and deleted by the system in a heap (it has
         * some internal catalog information stored internally in row "0").
         */
    String twok_string = new String("0123456789012345");
    for (int i = 0; i < 7; i++) {
        twok_string += twok_string;
    }
    T_AccessRow big_row = new T_AccessRow(2);
    big_row.setCol(1, new SQLChar(twok_string));
    // Create a heap conglomerate.
    long orig_conglomid = tc.createConglomerate(// create a heap conglomerate
    "heap", big_row.getRowArray(), // column sort order not required for heap
    null, // default collation
    null, // default properties
    null, // not temporary
    TransactionController.IS_DEFAULT);
    ConglomerateController cc = tc.openConglomerate(orig_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_READ_UNCOMMITTED);
    for (int i = 0; i < 10; i++) {
        big_row.setCol(0, new SQLInteger(i));
        cc.insert(big_row.getRowArray());
    }
    cc.close();
    // Open another scan on the conglomerate.
    ScanController base_scan = tc.openScan(orig_conglomid, // hold cursor open across commit
    true, // for update
    TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, // all columns, all as objects
    (FormatableBitSet) null, // start position - first row in conglomerate
    null, // unused if start position is null.
    0, // qualifier - accept all rows
    null, // stop position - last row in conglomerate
    null, // unused if stop position is null.
    0);
    // now delete all the rows and remember the row location of the
    // last row.
    RowLocation deleted_page_rowloc = base_scan.newRowLocationTemplate();
    for (int i = 0; i < 10; i++) {
        base_scan.next();
        base_scan.fetchLocation(deleted_page_rowloc);
        base_scan.delete();
        tc.commit();
    }
    base_scan.close();
    tc.commit();
    // at this point the post commit thread should have reclaimed all the 5
    // pages.  Open it, at read uncommitted level.
    cc = tc.openConglomerate(orig_conglomid, false, 0, TransactionController.MODE_RECORD, TransactionController.ISOLATION_READ_UNCOMMITTED);
    // Test heap fetch of row on page which does not exist.
    if (cc.fetch(deleted_page_rowloc, big_row.getRowArray(), null)) {
        throw T_Fail.testFailMsg("(readUncommitted) fetch should ret false for reclaimed page.");
    }
    // Test heap replace of row on page which does not exist.
    FormatableBitSet update_desc = new FormatableBitSet(1);
    if (cc.replace(deleted_page_rowloc, big_row.getRowArray(), update_desc)) {
        throw T_Fail.testFailMsg("(readUncommitted) delete should ret false for reclaimed page.");
    }
    // Test heap fetch (overloaded call) of row on page which does not exist.
    if (cc.fetch(deleted_page_rowloc, big_row.getRowArray(), null, true)) {
        throw T_Fail.testFailMsg("(readUncommitted) fetch should ret false for reclaimed page.");
    }
    // Test heap delete of row on page which does not exist.
    if (cc.delete(deleted_page_rowloc)) {
        throw T_Fail.testFailMsg("(readUncommitted) delete should ret false for reclaimed page.");
    }
    cc.close();
    /*
         * TEST 2 - test heap fetch of row on page where row does not exist.
         * <p>
         * Do this by inserting enough rows to put 1 row on the 2nd page.
         * Then delete this one row, which will queue a post commit to reclaim
         * the row and page.  Then insert one more row on the same page in
         * the same xact.  Now commit the xact, which will cause post commit
         * to run which will reclaim the row but not the page.  Then try and
         * fetch the row which was deleted.
         */
    // string column will be 1500 bytes, allowing 2 rows per page to fit.
    SQLChar stringcol = new SQLChar();
    stringcol.setValue(T_AccessFactory.repeatString("012345678901234", 100));
    big_row.setCol(1, stringcol);
    // Create a heap conglomerate.
    orig_conglomid = tc.createConglomerate(// create a heap conglomerate
    "heap", big_row.getRowArray(), // column sort order not required for heap
    null, // default collation
    null, // default properties
    null, // not temporary
    TransactionController.IS_DEFAULT);
    cc = tc.openConglomerate(orig_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_READ_UNCOMMITTED);
    for (int i = 0; i < 3; i++) {
        big_row.setCol(0, new SQLInteger(i));
        cc.insert(big_row.getRowArray());
    }
    // Open another scan on the conglomerate.
    base_scan = tc.openScan(orig_conglomid, // hold cursor open across commit
    true, // for update
    TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, // all columns, all as objects
    (FormatableBitSet) null, // start position - first row in conglomerate
    null, // unused if start position is null.
    0, // qualifier - accept all rows
    null, // stop position - last row in conglomerate
    null, // unused if stop position is null.
    0);
    // now delete all the rows and remember the row location of the
    // last row.
    RowLocation deleted_row_rowloc = base_scan.newRowLocationTemplate();
    for (int i = 0; i < 3; i++) {
        base_scan.next();
        base_scan.fetchLocation(deleted_row_rowloc);
        base_scan.delete();
    }
    // insert another row on page 2 to make sure page does not go away.
    cc.insert(big_row.getRowArray());
    cc.close();
    base_scan.close();
    tc.commit();
    // at this point the post commit thread should have reclaimed all the
    // deleted row on page 2, but not the page.
    // 
    // Open it, at read uncommitted level.
    cc = tc.openConglomerate(orig_conglomid, false, 0, TransactionController.MODE_RECORD, TransactionController.ISOLATION_READ_UNCOMMITTED);
    // test heap fetch of row on page where row does not exist.
    if (cc.fetch(deleted_row_rowloc, big_row.getRowArray(), null)) {
        throw T_Fail.testFailMsg("(readUncommitted) fetch should ret false for reclaimed row.");
    }
    // test heap replace of row on page where row does not exist.
    if (cc.replace(deleted_page_rowloc, big_row.getRowArray(), update_desc)) {
        throw T_Fail.testFailMsg("(readUncommitted) delete should ret false for reclaimed page.");
    }
    // test heap fetch (overloaded) of row on page where row does not exist.
    if (cc.fetch(deleted_page_rowloc, big_row.getRowArray(), null, true)) {
        throw T_Fail.testFailMsg("(readUncommitted) fetch should ret false for reclaimed page.");
    }
    // test heap delete of row on page where row does not exist.
    if (cc.delete(deleted_page_rowloc)) {
        throw T_Fail.testFailMsg("(readUncommitted) delete should ret false for reclaimed page.");
    }
    cc.close();
    /*
         * TEST 3 - test heap scan fetch of row on page prevents page from 
         *          disappearing, but handles row being deleted.
         * <p>
         * A heap scan will maintain a scan lock on a page even if it is doing
         * a read uncommitted scan.  This will prevent the row/page from being
         * reclaimed by post commit while the scan is positioned on the page. 
         * This presents no other concurrency issues for read uncommitted, it
         * should be invisible to the user (deletes can still happen and the
         * read uncommitted scanner will not block anyone).
         *
         * You need to at least get to the 2nd page, because the 1st page is
         * never totally reclaimed and deleted by the system in a heap (it has
         * some internal catalog information stored internally in row "0").
         */
    big_row = new T_AccessRow(2);
    big_row.setCol(1, new SQLChar(twok_string));
    // Create a heap conglomerate.
    orig_conglomid = tc.createConglomerate(// create a heap conglomerate
    "heap", big_row.getRowArray(), // column sort order not required for heap
    null, // default collation
    null, // default properties
    null, // not temporary
    TransactionController.IS_DEFAULT);
    cc = tc.openConglomerate(orig_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_READ_UNCOMMITTED);
    for (int i = 0; i < 10; i++) {
        big_row.setCol(0, new SQLInteger(i));
        cc.insert(big_row.getRowArray());
    }
    cc.close();
    // Open scan on the conglomerate, and position it on the second page.
    base_scan = tc.openScan(orig_conglomid, // hold cursor open across commit
    true, // for read
    0, TransactionController.MODE_RECORD, TransactionController.ISOLATION_READ_UNCOMMITTED, // all columns, all as objects
    (FormatableBitSet) null, // start position - first row in conglomerate
    null, // unused if start position is null.
    0, // qualifier - accept all rows
    null, // stop position - last row in conglomerate
    null, // unused if stop position is null.
    0);
    base_scan.next();
    base_scan.next();
    base_scan.next();
    if (!base_scan.doesCurrentPositionQualify())
        throw T_Fail.testFailMsg("(readUncommitted) doesCurrentPositionQualify() failed.");
    base_scan.fetch(big_row.getRowArray());
    base_scan.fetchLocation(deleted_row_rowloc);
    if (base_scan.isCurrentPositionDeleted())
        throw T_Fail.testFailMsg("(readUncommitted) isCurrentPositionDeleted() failed.");
    // Open another scan on the conglomerate.
    ScanController delete_scan = tc.openScan(orig_conglomid, // hold cursor open across commit
    true, // for update
    TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, // all columns, all as objects
    (FormatableBitSet) null, // start position - first row in conglomerate
    null, // unused if start position is null.
    0, // qualifier - accept all rows
    null, // stop position - last row in conglomerate
    null, // unused if stop position is null.
    0);
    for (int i = 0; i < 10; i++) {
        delete_scan.next();
        delete_scan.fetchLocation(deleted_page_rowloc);
        delete_scan.delete();
    }
    delete_scan.close();
    if (base_scan.doesCurrentPositionQualify())
        throw T_Fail.testFailMsg("(readUncommitted) doesCurrentPositionQualify() failed.");
    try {
        base_scan.fetch(big_row.getRowArray());
        throw T_Fail.testFailMsg("(readUncommitted) fetch of deleted row should throw exception.");
    } catch (StandardException se) {
        if (!se.getMessageId().equals(SQLState.AM_RECORD_NOT_FOUND)) {
            throw T_Fail.testFailMsg("(readUncommitted) fetch of deleted row should throw SQLState.AM_RECORD_NOT_FOUND.");
        }
    }
    base_scan.fetchLocation(deleted_row_rowloc);
    if (!base_scan.isCurrentPositionDeleted())
        throw T_Fail.testFailMsg("(readUncommitted) isCurrentPositionDeleted() failed.");
    base_scan.close();
    tc.commit();
    REPORT("(readUncommitted) succeeded");
    return true;
}

Example 40 with FormatableBitSet

use of org.apache.derby.iapi.services.io.FormatableBitSet in project derby by apache.

the class T_AccessFactory method scanExample.

protected boolean scanExample(TransactionController tc) throws StandardException, T_Fail {
    tc.commit();
    if (!tc.isPristine() || !tc.isIdle() || tc.isGlobal())
        throw T_Fail.testFailMsg("(scanExample) bad xact state after commit.");
    if ((tc.countOpens(TransactionController.OPEN_TOTAL) > 0) || (tc.countOpens(TransactionController.OPEN_CONGLOMERATE) > 0) || (tc.countOpens(TransactionController.OPEN_SCAN) > 0) || (tc.countOpens(TransactionController.OPEN_CREATED_SORTS) > 0) || (tc.countOpens(TransactionController.OPEN_SORT) > 0)) {
        System.out.println("OPENED 0:\n" + tc.debugOpened());
        return (FAIL("unexpected open count."));
    }
    // Create a heap conglomerate.
    long conglomid = tc.createConglomerate(// create a heap conglomerate
    "heap", // 1 SQLInteger() column template.
    new T_AccessRow(1).getRowArray(), // column sort order not required for heap
    null, // default collation
    null, // default properties
    null, // not temporary
    TransactionController.IS_DEFAULT);
    REPORT("(scanExample) starting");
    // Open it.
    ConglomerateController cc = tc.openConglomerate(conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
    // Insert some values.
    int[] values = { 11, 22, 33, 44, 55, 66 };
    T_AccessRow row = new T_AccessRow(1);
    for (int i = 0; i < values.length; i++) {
        row.setCol(0, new SQLInteger(values[i]));
        if (cc.insert(row.getRowArray()) != 0)
            throw T_Fail.testFailMsg("(scanExample after insert) insert failed ");
    }
    // For test coverage call the debugging output routine - can't diff it.
    REPORT("(scanExample) debug output testing: " + tc.debugOpened());
    // Close the conglomerate.
    cc.close();
    if ((tc.countOpens(TransactionController.OPEN_TOTAL) > 0) || (tc.countOpens(TransactionController.OPEN_CONGLOMERATE) > 0) || (tc.countOpens(TransactionController.OPEN_SCAN) > 0) || (tc.countOpens(TransactionController.OPEN_CREATED_SORTS) > 0) || (tc.countOpens(TransactionController.OPEN_SORT) > 0)) {
        System.out.println("OPENED 1:\n" + tc.debugOpened());
        return (FAIL("unexpected open count."));
    }
    REPORT("(scanExample) rows inserted");
    // Correlates our position in the upcoming scan to the values array.
    int scanindex = 0;
    // Put a specific column in the row so we can look at it.
    SQLInteger col = new SQLInteger(0);
    row.setCol(0, col);
    flush_cache();
    StaticCompiledOpenConglomInfo static_info = tc.getStaticCompiledConglomInfo(conglomid);
    // Open a scan on the conglomerate.
    ScanController scan1 = tc.openCompiledScan(// don't hold
    false, // not for update
    0, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, // all columns, all as objects
    (FormatableBitSet) null, // start position - first row in conglomerate
    null, // unused if start position is null.
    0, // qualifier - accept all rows
    null, // stop position - last row in conglomerate
    null, // unused if stop position is null.
    0, static_info, tc.getDynamicCompiledConglomInfo(conglomid));
    if (scan1.getEstimatedRowCount() != 6) {
        throw T_Fail.testFailMsg("(scanExample) estimated row count not 6:" + scan1.getEstimatedRowCount());
    }
    // Test 2 - ASSERT(should be able to set arbitrary row count)
    scan1.setEstimatedRowCount(5);
    if (scan1.getEstimatedRowCount() != 5) {
        throw T_Fail.testFailMsg("(scanExample) estimated row count not 5");
    }
    // Iterate through and check that the rows are still there.
    while (scan1.next()) {
        scan1.fetch(row.getRowArray());
        // Check we got the value we put in.
        if (col.getInt() != values[scanindex])
            throw T_Fail.testFailMsg("(scanExample after insert) Row " + scanindex + " should have been " + values[scanindex] + ", was " + col.getInt());
        scanindex++;
    }
    // make sure another next() call continues to return false.
    if (scan1.next())
        throw T_Fail.testFailMsg("(scanExample after insert) should continue to return false after reaching end of scan");
    // see if reopen scan interfaces work
    scan1.reopenScan(// start position - first row in conglomerate
    null, // unused if start position is null.
    0, // qualifier - accept all rows
    null, // stop position - last row in conglomerate
    null, // unused if stop position is null.
    0);
    scan1.next();
    scan1.next();
    scan1.next();
    RowLocation third_row_rowloc = scan1.newRowLocationTemplate();
    scan1.fetchLocation(third_row_rowloc);
    // see if reopen scan interfaces work
    scan1.reopenScanByRowLocation(third_row_rowloc, null);
    scanindex = 2;
    while (scan1.next()) {
        scan1.fetch(row.getRowArray());
        // Check we got the value we put in.
        if (col.getInt() != values[scanindex])
            throw T_Fail.testFailMsg("(scanExample after insert) Row " + scanindex + " should have been " + values[scanindex] + ", was " + col.getInt());
        scanindex++;
    }
    scan1.close();
    // Check we saw the right number of rows.
    if (scanindex != values.length)
        throw T_Fail.testFailMsg("(scanExample after insert) Expected " + values.length + "rows, got " + scanindex);
    REPORT("(scanExample) rows present and accounted for");
    // Open another scan on the conglomerate.
    ScanController scan2 = tc.openScan(conglomid, // don't hold
    false, // for update
    TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, // all columns, all as objects
    (FormatableBitSet) null, // start position - first row in conglomerate
    null, // unused if start position is null.
    0, // qualifier - accept all rows
    null, // stop position - last row in conglomerate
    null, // unused if stop position is null.
    0);
    // Iterate with the second scan and fiddle with the values so they
    // look like the new value array.
    int[] newvalues = { 22, 33, 444, 55, 6666 };
    while (scan2.next()) {
        scan2.fetch(row.getRowArray());
        switch(((SQLInteger) row.getCol(0)).getInt()) {
            case 11:
                if (!scan2.delete())
                    throw T_Fail.testFailMsg("(scanExample) delete failed.");
                break;
            case 22:
            case 33:
            case 55:
                // leave these alone
                break;
            case 44:
                DataValueDescriptor[] update_row = new DataValueDescriptor[1];
                update_row[0] = new SQLInteger(444);
                FormatableBitSet update_desc = new FormatableBitSet(1);
                update_desc.set(0);
                if (!scan2.replace(update_row, update_desc)) {
                    throw T_Fail.testFailMsg("(scanExample) partial column row replace failed.");
                }
                break;
            case 66:
                row.setCol(0, new SQLInteger(6666));
                if (!scan2.replace(row.getRowArray(), (FormatableBitSet) null))
                    throw T_Fail.testFailMsg("(scanExample) replace failed.");
                break;
            default:
                throw T_Fail.testFailMsg("(scanExample) Read unexpected value.");
        }
    }
    scan2.close();
    REPORT("(scanExample) rows fiddled with");
    // Open a third scan on the conglomerate.
    ScanController scan3 = tc.openScan(conglomid, // don't hold
    false, // not for update
    0, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, // all columns, all as objects
    (FormatableBitSet) null, // start position - first row in conglomerate
    null, // unused if start position is null.
    0, // qualifier - accept all rows
    null, // stop position - last row in conglomerate
    null, // unused if stop position is null.
    0);
    // Iterate through and inspect the changes.
    scanindex = 0;
    row.setCol(0, col);
    while (scan3.next()) {
        scan3.fetch(row.getRowArray());
        REPORT("(scanExample) scan3 fetched " + col.getInt());
        // Check we got the value we put in.
        if (col.getInt() != newvalues[scanindex])
            throw T_Fail.testFailMsg("(scanExample after changes) Row " + scanindex + " should have been " + newvalues[scanindex] + ", was " + col.getInt());
        scanindex++;
    }
    scan3.close();
    // Open a third scan on the conglomerate.
    scan3 = tc.openScan(conglomid, // don't hold
    false, // not for update
    0, TransactionController.MODE_RECORD, TransactionController.ISOLATION_READ_UNCOMMITTED, // all columns, all as objects
    (FormatableBitSet) null, // start position - first row in conglomerate
    null, // unused if start position is null.
    0, // qualifier - accept all rows
    null, // stop position - last row in conglomerate
    null, // unused if stop position is null.
    0);
    // Iterate through and inspect the changes.
    scanindex = 0;
    row.setCol(0, col);
    while (scan3.next()) {
        scan3.fetch(row.getRowArray());
        REPORT("(scanExample) scan3 fetched " + col.getInt());
        // Check we got the value we put in.
        if (col.getInt() != newvalues[scanindex])
            throw T_Fail.testFailMsg("(scanExample after changes) Row " + scanindex + " should have been " + newvalues[scanindex] + ", was " + col.getInt());
        scanindex++;
    }
    scan3.close();
    // Check we saw the right number of rows.
    if (scanindex != newvalues.length)
        throw T_Fail.testFailMsg("(scanExample after changes) Expected " + newvalues.length + "rows, got " + scanindex);
    REPORT("(scanExample) fiddled rows present and accounted for");
    REPORT("(scanExample) testing expected delete errors");
    // Open 4th scan on conglomerate and test "expected" error returns
    // from replace, partial column replace, delete.
    ScanController scan4 = tc.openScan(conglomid, // don't hold
    false, // for update
    TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, // all columns, all as objects
    (FormatableBitSet) null, // start position - first row in conglomerate
    null, // unused if start position is null.
    0, // qualifier - accept all rows
    null, // stop position - last row in conglomerate
    null, // unused if stop position is null.
    0);
    // then test that operations on that deleted entry FAIL as expected.
    while (scan4.next()) {
        scan4.fetch(row.getRowArray());
        if (!scan4.doesCurrentPositionQualify()) {
            throw T_Fail.testFailMsg("(scanExample doesCurrentPositionQualify() errors) Expected requalify of current row to succeed");
        }
        if (((SQLInteger) row.getCol(0)).getInt() == 22) {
            if (!scan4.delete()) {
                throw T_Fail.testFailMsg("(scanExample delete errors) Delete failed.");
            }
            break;
        }
    }
    if (scan4.doesCurrentPositionQualify()) {
        throw T_Fail.testFailMsg("(scanExample doesCurrentPositionQualify() errors) Expected qualify of deleted row to FAIL");
    }
    DataValueDescriptor[] update_row = new DataValueDescriptor[1];
    FormatableBitSet update_desc = new FormatableBitSet(1);
    update_desc.set(0);
    if (scan4.replace(update_row, update_desc)) {
        throw T_Fail.testFailMsg("(scanExample delete errors) Expected partial column replace to FAIL");
    }
    if (scan4.replace(row.getRowArray(), (FormatableBitSet) null)) {
        throw T_Fail.testFailMsg("(scanExample after changes) Expected replace to FAIL");
    }
    if (scan4.delete()) {
        throw T_Fail.testFailMsg("(scanExample after changes) Expected delete to FAIL");
    }
    scan4.close();
    if ((tc.countOpens(TransactionController.OPEN_TOTAL) > 0) || (tc.countOpens(TransactionController.OPEN_CONGLOMERATE) > 0) || (tc.countOpens(TransactionController.OPEN_SCAN) > 0) || (tc.countOpens(TransactionController.OPEN_CREATED_SORTS) > 0) || (tc.countOpens(TransactionController.OPEN_SORT) > 0)) {
        System.out.println("OPENED:\n" + tc.debugOpened());
        return (FAIL("unexpected open count."));
    }
    REPORT("(scanExample) completed");
    return true;
}