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

Example 1 with Conglomerate

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

the class B2IController method init.

void init(TransactionManager xact_manager, Transaction rawtran, boolean hold, int open_mode, int lock_level, LockingPolicy locking_policy, boolean get_locks, B2I conglomerate, B2IUndo undo, B2IStaticCompiledInfo static_info, DynamicCompiledOpenConglomInfo dynamic_info) throws StandardException {
    // open and lock the base table.
    int base_open_mode = open_mode | TransactionController.OPENMODE_FOR_LOCK_ONLY;
    // used for geting the IX intent lock on the table.
    if (static_info != null) {
        base_cc_for_locking = xact_manager.openCompiledConglomerate(false, base_open_mode, lock_level, TransactionController.ISOLATION_REPEATABLE_READ, static_info.base_table_static_info, /* TODO - maintain a dynamic info for this */
        ((Conglomerate) static_info.getConglom()).getDynamicCompiledConglomInfo());
    } else {
        base_cc_for_locking = xact_manager.openConglomerate(conglomerate.baseConglomerateId, false, base_open_mode, lock_level, TransactionController.ISOLATION_REPEATABLE_READ);
    }
    BTreeLockingPolicy b2i_locking_policy;
    if (lock_level == TransactionController.MODE_TABLE) {
        b2i_locking_policy = new B2ITableLocking3(rawtran, lock_level, locking_policy, base_cc_for_locking, this);
    } else if (lock_level == TransactionController.MODE_RECORD) {
        b2i_locking_policy = new B2IRowLocking3(rawtran, lock_level, locking_policy, base_cc_for_locking, this);
    } else {
        if (SanityManager.DEBUG) {
            SanityManager.THROWASSERT("Bad lock level: " + lock_level);
        }
        b2i_locking_policy = null;
    }
    // Do generic b-tree initialization.
    super.init(xact_manager, hold, (ContainerHandle) null, rawtran, open_mode, lock_level, b2i_locking_policy, conglomerate, undo, static_info, dynamic_info);
    if (SanityManager.DEBUG)
        SanityManager.ASSERT(conglomerate != null);
}

Example 2 with Conglomerate

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

the class B2IFactory method readConglomerate.

/**
 * Return Conglomerate object for conglomerate with conglomid.
 * <p>
 * Return the Conglomerate Object.  This is implementation specific.
 * Examples of what will be done is using the id to find the file where
 * the conglomerate is located, and then executing implementation specific
 * code to instantiate an object from reading a "special" row from a
 * known location in the file.  In the btree case the btree conglomerate
 * is stored as a column in the control row on the root page.
 * <p>
 * This operation is costly so it is likely an implementation using this
 * will cache the conglomerate row in memory so that subsequent accesses
 * need not perform this operation.
 * <p>
 * The btree object returned by this routine may be installed in a cache
 * so the object must not change.
 *
 * @return An instance of the conglomerate.
 *
 * @exception  StandardException  Standard exception policy.
 */
public Conglomerate readConglomerate(TransactionManager xact_manager, ContainerKey container_key) throws StandardException {
    Conglomerate btree = null;
    ContainerHandle container = null;
    ControlRow root = null;
    try {
        // open readonly, with no locks.  Dirty read is ok as it is the
        // responsibility of client code to make sure this data is not
        // changing while being read.  The only changes that currently
        // happen to this data is creation and deletion - no updates
        // ever happen to btree conglomerates.
        container = (xact_manager.getRawStoreXact()).openContainer(container_key, (LockingPolicy) null, ContainerHandle.MODE_READONLY);
        if (container == null) {
            throw StandardException.newException(SQLState.STORE_CONGLOMERATE_DOES_NOT_EXIST, container_key.getContainerId());
        }
        // The conglomerate is located in the control row on the root page.
        root = ControlRow.get(container, BTree.ROOTPAGEID);
        if (SanityManager.DEBUG)
            SanityManager.ASSERT(root.getPage().isLatched());
        // read the Conglomerate from it's entry in the control row.
        btree = (Conglomerate) root.getConglom(B2I.FORMAT_NUMBER);
        if (SanityManager.DEBUG)
            SanityManager.ASSERT(btree instanceof B2I);
    } finally {
        if (root != null)
            root.release();
        if (container != null)
            container.close();
    }
    return (btree);
}

Example 3 with Conglomerate

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

the class B2IForwardScan method init.

/**
 *	Initialize the scan for use.
 *	<p>
 *	Any changes to this method may have to be reflected in close as well.
 *    <p>
 *    The btree init opens the container (super.init), and stores away the
 *    state of the qualifiers.  The actual searching for the first position
 *    is delayed until the first next() call.
 *
 *	@exception  StandardException  Standard exception policy.
 */
public void init(TransactionManager xact_manager, Transaction rawtran, boolean hold, int open_mode, int lock_level, LockingPolicy locking_policy, int isolation_level, boolean open_for_locking, FormatableBitSet scanColumnList, DataValueDescriptor[] startKeyValue, int startSearchOperator, Qualifier[][] qualifier, DataValueDescriptor[] stopKeyValue, int stopSearchOperator, B2I conglomerate, B2IUndo undo, B2IStaticCompiledInfo static_info, DynamicCompiledOpenConglomInfo dynamic_info) throws StandardException {
    // open and lock the base table.
    int base_open_mode = open_mode | TransactionController.OPENMODE_FOR_LOCK_ONLY;
    // open the base conglomerate - just to get lock
    if (static_info != null) {
        base_cc_for_locking = xact_manager.openCompiledConglomerate(false, base_open_mode, lock_level, isolation_level, static_info.base_table_static_info, /* TODO - maintain a dynamic info for this */
        ((Conglomerate) static_info.getConglom()).getDynamicCompiledConglomInfo());
    } else {
        base_cc_for_locking = xact_manager.openConglomerate(conglomerate.baseConglomerateId, false, base_open_mode, lock_level, isolation_level);
    }
    BTreeLockingPolicy b2i_locking_policy = conglomerate.getBtreeLockingPolicy(rawtran, lock_level, open_mode, isolation_level, base_cc_for_locking, this);
    super.init(xact_manager, rawtran, hold, open_mode, lock_level, b2i_locking_policy, scanColumnList, startKeyValue, startSearchOperator, qualifier, stopKeyValue, stopSearchOperator, conglomerate, undo, static_info, dynamic_info);
    // todo - should just save the isolation level in OpenBtree but
    // save it here for now.
    init_isolation_level = isolation_level;
}

Example 4 with Conglomerate

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

the class RAMTransaction method defragmentConglomerate.

/**
 * Compress table in place.
 * <p>
 * Returns a GroupFetchScanController which can be used to move rows
 * around in a table, creating a block of free pages at the end of the
 * table.  The process will move rows from the end of the table toward
 * the beginning.  The GroupFetchScanController will return the
 * old row location, the new row location, and the actual data of any
 * row moved.  Note that this scan only returns moved rows, not an
 * entire set of rows, the scan is designed specifically to be
 * used by either explicit user call of the SYSCS_ONLINE_COMPRESS_TABLE()
 * procedure, or internal background calls to compress the table.
 *
 * The old and new row locations are returned so that the caller can
 * update any indexes necessary.
 *
 * This scan always returns all collumns of the row.
 *
 * All inputs work exactly as in openScan().  The return is
 * a GroupFetchScanController, which only allows fetches of groups
 * of rows from the conglomerate.
 * <p>
 *
 * @return The GroupFetchScanController to be used to fetch the rows.
 *
 * @param conglomId             see openScan()
 * @param hold                  see openScan()
 * @param open_mode             see openScan()
 * @param lock_level            see openScan()
 * @param isolation_level       see openScan()
 *
 * @exception  StandardException  Standard exception policy.
 *
 * @see ScanController
 * @see GroupFetchScanController
 */
public GroupFetchScanController defragmentConglomerate(long conglomId, boolean online, boolean hold, int open_mode, int lock_level, int isolation_level) throws StandardException {
    if (SanityManager.DEBUG) {
        if ((open_mode & ~(TransactionController.OPENMODE_FORUPDATE | TransactionController.OPENMODE_FOR_LOCK_ONLY | TransactionController.OPENMODE_SECONDARY_LOCKED)) != 0)
            SanityManager.THROWASSERT("Bad open mode to openScan:" + Integer.toHexString(open_mode));
        if (!(lock_level == MODE_RECORD | lock_level == MODE_TABLE))
            SanityManager.THROWASSERT("Bad lock level to openScan:" + lock_level);
    }
    // Find the conglomerate.
    Conglomerate conglom = findExistingConglomerate(conglomId);
    // Get a scan controller.
    ScanManager sm = conglom.defragmentConglomerate(this, rawtran, hold, open_mode, determine_lock_level(lock_level), determine_locking_policy(lock_level, isolation_level), isolation_level);
    // Keep track of it so we can release on close.
    scanControllers.add(sm);
    return (sm);
}

Example 5 with Conglomerate

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

the class RAMTransaction method createConglomerate.

/**
 * Create a new conglomerate.
 * <p>
 * @see TransactionController#createConglomerate
 *
 * @exception  StandardException  Standard exception policy.
 */
public long createConglomerate(String implementation, DataValueDescriptor[] template, ColumnOrdering[] columnOrder, int[] collationIds, Properties properties, int temporaryFlag) throws StandardException {
    // Find the appropriate factory for the desired implementation.
    MethodFactory mfactory;
    mfactory = accessmanager.findMethodFactoryByImpl(implementation);
    if (mfactory == null || !(mfactory instanceof ConglomerateFactory)) {
        throw StandardException.newException(SQLState.AM_NO_SUCH_CONGLOMERATE_TYPE, implementation);
    }
    ConglomerateFactory cfactory = (ConglomerateFactory) mfactory;
    // Create the conglomerate
    // RESOLVE (mikem) - eventually segmentid's will be passed into here
    // in the properties.  For now just use 0.]
    int segment;
    long conglomid;
    if ((temporaryFlag & TransactionController.IS_TEMPORARY) == TransactionController.IS_TEMPORARY) {
        segment = ContainerHandle.TEMPORARY_SEGMENT;
        conglomid = ContainerHandle.DEFAULT_ASSIGN_ID;
    } else {
        // RESOLVE - only using segment 0
        segment = 0;
        conglomid = accessmanager.getNextConglomId(cfactory.getConglomerateFactoryId());
    }
    // call the factory to actually create the conglomerate.
    Conglomerate conglom = cfactory.createConglomerate(this, segment, conglomid, template, columnOrder, collationIds, properties, temporaryFlag);
    long conglomId;
    if ((temporaryFlag & TransactionController.IS_TEMPORARY) == TransactionController.IS_TEMPORARY) {
        conglomId = nextTempConglomId--;
        if (tempCongloms == null)
            tempCongloms = new HashMap<Long, Conglomerate>();
        tempCongloms.put(conglomId, conglom);
    } else {
        conglomId = conglom.getContainerid();
        accessmanager.conglomCacheAddEntry(conglomId, conglom);
    }
    return conglomId;
}