Examples with ScanController org.apache.derby.iapi.store.access.ScanController used on opensource projects

Example 16 with ScanController

use of org.apache.derby.iapi.store.access.ScanController in project derby by apache.

the class T_QualifierTest method t_scanFetchNext.

/**
 * Test scan which does FetchNext with all of the fields.
 * <p>
 * FetchNext() may be optimized by the underlying scan code to try and
 * not do multiple fetches of the same row for the user, but if the user
 * asks for one column, but the stop position depends on the whole row
 * this optimization is not possible.
 * <p>
 *
 * @return Whether the test succeeded or not.
 *
 * @exception  StandardException  Standard exception policy.
 */
public static boolean t_scanFetchNext(TransactionController tc, long conglomid, DataValueDescriptor[] init_scan_template, DataValueDescriptor[] fetch_template, DataValueDescriptor[] start_key, int start_op, Qualifier[][] qualifier, DataValueDescriptor[] stop_key, int stop_op, int expect_numrows, int input_expect_key, int order) throws StandardException, T_Fail {
    HashSet set = null;
    boolean ordered = (order == ORDER_FORWARD || order == ORDER_DESC);
    if (!ordered) {
        set = create_hash_set(input_expect_key, expect_numrows, order);
    }
    /**
     ********************************************************************
     * Forward scan test case
     **********************************************************************
     */
    ScanController scan = tc.openScan(conglomid, false, 0, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, (FormatableBitSet) null, start_key, start_op, qualifier, stop_key, stop_op);
    int expect_key = input_expect_key;
    long key = -42;
    long numrows = 0;
    while (scan.fetchNext(fetch_template)) {
        scan.fetch(init_scan_template);
        // make sure all columns from fetchNext() match subsequent fetch().
        for (int i = 0; i < init_scan_template.length; i++) {
            if ((fetch_template[i]).compare((init_scan_template[i])) != 0) {
                return (fail("(t_scanFetchNext) wrong key, expected (" + fetch_template[i] + ")" + "but got (" + init_scan_template[i] + ")."));
            }
        }
        // see if we are getting the right keys.
        key = ((SQLLongint) (init_scan_template[2])).getLong();
        if (ordered) {
            if (key != expect_key) {
                return (fail("(t_scanFetchNext) wrong key, expected (" + expect_key + ")" + "but got (" + key + ")."));
            } else {
                if (order == ORDER_DESC)
                    expect_key--;
                else
                    expect_key++;
            }
        } else {
            if (!set.remove(key)) {
                return (fail("(t_scanFetchNext) wrong key, expected (" + expect_key + ")" + "but got (" + key + ")."));
            }
        }
        numrows++;
    }
    scan.close();
    if (numrows != expect_numrows) {
        return (fail("(t_scanFetchNext) wrong number of rows. Expected " + expect_numrows + " rows, but got " + numrows + "rows."));
    }
    return (true);
}

Example 17 with ScanController

use of org.apache.derby.iapi.store.access.ScanController in project derby by apache.

the class T_CreateConglomRet method t_delete.

/**
 * delete a single key, given key value.  assumes 3 column table, first
 * column = 1, second column is a unique key, and 3rd column is a
 * RecordHandle into the base table.
 *
 * @exception  StandardException  Standard exception policy.
 */
protected boolean t_delete(TransactionController tc, long conglomid, DataValueDescriptor[] search_key, boolean useUpdateLocks) throws StandardException {
    SQLLongint column0 = new SQLLongint(-1);
    SQLLongint column1 = new SQLLongint(-1);
    int openmode = TransactionController.OPENMODE_FORUPDATE;
    if (useUpdateLocks) {
        openmode |= TransactionController.OPENMODE_USE_UPDATE_LOCKS;
    }
    // open a new scan
    ScanController scan = tc.openScan(conglomid, false, openmode, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, (FormatableBitSet) null, search_key, ScanController.GE, null, search_key, ScanController.GT);
    long expect_key = ((SQLLongint) search_key[1]).getLong();
    int numrows = 0;
    DataValueDescriptor[] partialRow = new DataValueDescriptor[2];
    partialRow[0] = column0;
    partialRow[1] = column1;
    while (scan.next()) {
        numrows++;
        scan.fetch(partialRow);
        if (column0.getLong() != 1)
            return (FAIL("(t_delete) column[0] value is not 1"));
        if (column1.getLong() != expect_key)
            return (FAIL("(t_delete) column[1]  value is not " + expect_key));
        if (!scan.delete()) {
            return (FAIL("(t_delete): delete of row failed"));
        }
        if (scan.delete()) {
            return (FAIL("(t_delete): re-delete of row succeeded"));
        }
    }
    scan.close();
    // This function expects unique keys, so scan should find single row.
    if (numrows != 1) {
        return (FAIL("(t_delete) wrong number of rows. Expected " + "1 row, but got " + numrows + "rows."));
    }
    return (true);
}

Example 18 with ScanController

use of org.apache.derby.iapi.store.access.ScanController in project derby by apache.

the class T_CreateConglomRet method t_003.

/**
 * Test BTree.openScan(), BtreeScan.init(), BtreeScan.next(),
 * BtreeScan.fetch().
 *
 * @exception  StandardException  Standard exception policy.
 * @exception  T_Fail  Throws T_Fail on any test failure.
 */
protected boolean t_003(TransactionController tc) throws StandardException, T_Fail {
    T_SecondaryIndexRow index_row = new T_SecondaryIndexRow();
    // base row template - last column is just to make row long so that
    // multiple pages are spanned.
    DataValueDescriptor[] base_row = TemplateRow.newU8Row(4);
    base_row[3] = new SQLChar();
    String string_1500char = new String();
    for (int i = 0; i < 300; i++) string_1500char += "mikem";
    boolean ret_val = true;
    long value = -1;
    long[] col1 = { 1, 3, 4, 4, 4, 5, 5, 5, 6, 7, 9 };
    long[] col2 = { 1, 1, 2, 4, 6, 2, 4, 6, 1, 1, 1 };
    long[] col3 = { 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 };
    // set of deleted rows to make scans more interesting
    long[] d_col1 = { 0, 2, 3, 4, 4, 5, 5, 5, 6, 7, 8, 10, 11, 12 };
    long[] d_col2 = { 1, 1, 2, 3, 5, 0, 3, 5, 0, 0, 1, 42, 42, 1 };
    long[] d_col3 = { 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104 };
    REPORT("Starting t_003");
    // create the base table
    long base_conglomid = tc.createConglomerate(// create a heap conglomerate
    "heap", // base table template row
    base_row, // column sort order - not required for heap
    null, // default collation
    null, // default properties
    null, // not temporary
    TransactionController.IS_DEFAULT);
    // Open the base table
    ConglomerateController base_cc = tc.openConglomerate(base_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
    // initialize the secondary index row - pointing it at base row
    index_row.init(base_row, base_cc.newRowLocationTemplate(), 5);
    Properties properties = createProperties(// no current properties list
    null, // don't allow duplicates
    false, // 4 columns in index row
    5, // non-unique index
    5, // maintain parent links
    true, // base conglom id
    base_conglomid, // row loc in last column
    4);
    long index_conglomid = tc.createConglomerate(// create a btree secondary
    "BTREE", // row template
    index_row.getRow(), // column sort order - default
    null, // default collation
    null, // properties
    properties, // not temporary
    TransactionController.IS_DEFAULT);
    // Open the conglomerate.
    ConglomerateController index_cc = tc.openConglomerate(index_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
    // Create a row.
    T_SecondaryIndexRow template = new T_SecondaryIndexRow();
    RowLocation row_loc = base_cc.newRowLocationTemplate();
    template.init(base_row, row_loc, 5);
    // insert them in reverse order just to make sure btree is sorting them
    for (int i = col1.length - 1; i >= 0; i--) {
        ((SQLLongint) (template.getRow()[0])).setValue(col1[i]);
        ((SQLLongint) (template.getRow()[1])).setValue(col2[i]);
        ((SQLLongint) (template.getRow()[2])).setValue(col3[i]);
        base_row[3] = new SQLChar(string_1500char);
        base_cc.insertAndFetchLocation(base_row, row_loc);
        // ")" + template);
        if (index_cc.insert(template.getRow()) != 0)
            throw T_Fail.testFailMsg("insert failed");
    }
    index_cc.checkConsistency();
    ((B2IController) index_cc).debugConglomerate();
    ret_val = t_003_scan_test_cases(tc, index_conglomid, template);
    // may or may not clean these up.
    for (int i = d_col1.length - 1; i >= 0; i--) {
        ((SQLLongint) (template.getRow()[0])).setValue(d_col1[i]);
        ((SQLLongint) (template.getRow()[1])).setValue(d_col2[i]);
        ((SQLLongint) (template.getRow()[2])).setValue(d_col3[i]);
        base_row[3] = new SQLChar(string_1500char);
        base_cc.insertAndFetchLocation(base_row, row_loc);
        // ")" + template);
        if (index_cc.insert(template.getRow()) != 0)
            throw T_Fail.testFailMsg("insert failed");
        // now delete the row.
        base_cc.delete(row_loc);
        ScanController delete_scan = tc.openScan(index_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, (FormatableBitSet) null, template.getRow(), ScanController.GE, null, template.getRow(), ScanController.GT);
        if (!delete_scan.next()) {
            throw T_Fail.testFailMsg("delete could not find key");
        } else {
            delete_scan.delete();
            if (delete_scan.next())
                throw T_Fail.testFailMsg("delete found more than one key");
        }
        delete_scan.close();
    }
    ret_val = t_003_scan_test_cases(tc, index_conglomid, template);
    // Close the conglomerate.
    index_cc.close();
    tc.commit();
    REPORT("Ending t_003");
    return (ret_val);
}

Example 19 with ScanController

use of org.apache.derby.iapi.store.access.ScanController in project derby by apache.

the class T_CreateConglomRet method t_006.

/**
 * Test unimplemented interfaces.
 *
 * The following ScanController interfaces are not supported by the
 * btree implementation, because row locations are not returned outside
 * the interface.  At some point we may package a key as a row location
 * but that does not really give any more functionality than using scan
 * to find your key:
 *     ScanController.fetchLocation()
 *     ScanController.newRowLocationTemplate()
 *     ScanController.replace()
 *     ConglomerateController.delete()
 *     ConglomerateController.fetch()
 *     ConglomerateController.insertAndFetchLocation()
 *     ConglomerateController.newRowLocationTemplate()
 *     ConglomerateController.replace()
 *
 * @exception  StandardException  Standard exception policy.
 * @exception  T_Fail  Throws T_Fail on any test failure.
 */
protected boolean t_006(TransactionController tc) throws StandardException, T_Fail {
    REPORT("Starting t_006");
    T_CreateConglomRet create_ret = new T_CreateConglomRet();
    createCongloms(tc, 2, false, false, 0, create_ret);
    // Open the base conglomerate.
    ConglomerateController base_cc = tc.openConglomerate(create_ret.base_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
    // Open the index conglomerate.
    ConglomerateController index_cc = tc.openConglomerate(create_ret.index_conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
    // Create a base row template.
    DataValueDescriptor[] base_row = TemplateRow.newU8Row(2);
    RowLocation base_rowloc = base_cc.newRowLocationTemplate();
    T_SecondaryIndexRow index_row_from_base_row = new T_SecondaryIndexRow();
    index_row_from_base_row.init(base_row, base_rowloc, 3);
    ((SQLLongint) base_row[0]).setValue(1);
    // Create a row.
    T_SecondaryIndexRow index_row = new T_SecondaryIndexRow();
    index_row.init(TemplateRow.newU8Row(2), base_cc.newRowLocationTemplate(), 3);
    // test: make sure scan position is right after inserts before scan
    // no split case.  In this case the slot position of the current
    // position should change, but the code will keep a record handle
    // and not need to reposition by key.
    // before keys: 1000, 3000
    // last key gotten froms scan : 0
    // insert keys:1-900
    // next key from scan should be: 5
    // insert 1000
    ((SQLLongint) base_row[1]).setValue(1000);
    base_cc.insertAndFetchLocation(base_row, base_rowloc);
    if (index_cc.insert(index_row_from_base_row.getRow()) != 0) {
        throw T_Fail.testFailMsg("insert failed");
    }
    // try each of the unsupported interfaces:
    try {
        index_cc.delete(null);
        return (FAIL("t_006: ConglomerateController.delete() succeeded."));
    } catch (StandardException e) {
    }
    try {
        if (!index_cc.fetch(null, RowUtil.EMPTY_ROW, (FormatableBitSet) null)) {
            return (FAIL("t_006: ConglomerateController.fetch() bad ret."));
        }
        return (FAIL("t_006: ConglomerateController.fetch() succeeded."));
    } catch (StandardException e) {
    }
    try {
        index_cc.insertAndFetchLocation((DataValueDescriptor[]) null, null);
        return (FAIL("t_006: ConglomerateController.insertAndFetchLocation() succeeded."));
    } catch (StandardException e) {
    }
    try {
        RowLocation rowloc = index_cc.newRowLocationTemplate();
        return (FAIL("t_006: ConglomerateController.newRowLocationTemplate() succeeded."));
    } catch (StandardException e) {
    }
    try {
        index_cc.replace(null, null, null);
        return (FAIL("t_006: ConglomerateController.replace() succeeded."));
    } catch (StandardException e) {
    }
    index_cc.close();
    // open a new scan
    ScanController scan = tc.openScan(create_ret.index_conglomid, false, 0, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, (FormatableBitSet) null, null, ScanController.NA, null, null, ScanController.NA);
    int numrows = 0;
    while (scan.next()) {
        numrows++;
        scan.fetch(index_row_from_base_row.getRow());
        try {
            scan.fetchLocation(null);
            return (FAIL("t_006: scan.fetchLocation() succeeded"));
        } catch (StandardException e) {
        }
        try {
            RowLocation rowloc = scan.newRowLocationTemplate();
            return (FAIL("t_006: scan.newRowLocationTemplate() succeeded"));
        } catch (StandardException e) {
        }
        try {
            scan.replace(index_row_from_base_row.getRow(), (FormatableBitSet) null);
            return (FAIL("t_006: scan.replace() succeeded"));
        } catch (StandardException e) {
        }
    }
    // make sure that scan.next() continues to return false
    if (scan.next())
        return (FAIL("t_006: scan.next() returned true after false."));
    scan.close();
    if (numrows != 1) {
        return (FAIL("(t_scan) wrong number of rows. Expected " + "1 row, but got " + numrows + "rows."));
    }
    REPORT("Ending t_006");
    return (true);
}

Example 20 with ScanController

use of org.apache.derby.iapi.store.access.ScanController in project derby by apache.

the class T_CreateConglomRet method t_scan.

/**
 * Test a single scan.
 *
 * @exception  StandardException  Standard exception policy.
 */
protected boolean t_scan(TransactionController tc, long conglomid, DataValueDescriptor[] template, DataValueDescriptor[] start_key, int start_op, Qualifier[][] qualifier, DataValueDescriptor[] stop_key, int stop_op, int expect_numrows, int expect_key) throws StandardException {
    // open a new scan
    ScanController scan = tc.openScan(conglomid, false, TransactionController.OPENMODE_FORUPDATE, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE, (FormatableBitSet) null, start_key, start_op, qualifier, stop_key, stop_op);
    long key = -42;
    long numrows = 0;
    while (scan.next()) {
        scan.fetch(template);
        key = ((SQLLongint) template[2]).getLong();
        if (key != expect_key) {
            return (FAIL("(t_scan) wrong key, expected (" + expect_key + ")" + "but got (" + key + ")."));
        } else {
            expect_key++;
            numrows++;
        }
    }
    ((B2IForwardScan) scan).checkConsistency();
    scan.close();
    if (numrows != expect_numrows) {
        return (FAIL("(t_scan) wrong number of rows. Expected " + expect_numrows + " rows, but got " + numrows + "rows."));
    }
    return (true);
}