Examples of org.chaidb.db.index.btree.BTree

org.chaidb.db.index.btree.BTree
This class implements Berkeley DB database format.
There are 3 classes:

BTree
Maintains the actual file handle, and answers requests for pages. Auxiliary classes are instantiated with a reference to this class so that they can access the file.
BTreePage
Most database manipulations are handled here. For example, to search, the top-level BTree object fetches the root page (always page 1) from the page file and asks it to search itself. It will go back to the page file to fetch additional pages as needed.
BTreeNode
A fairly simple class that encapsulates the key/data pairs stored in pages.

        if (status == CLOSE) return;
        oldKernelContext.setOnlyMemory(true);
        switch (mode) {
            case STORE_REPLACE:
                if (storage instanceof BTree) {
                    BTree btree = (BTree) storage;
                    if (btree.isReady()) {
                        //Lookup from BTree to get original object and store.
                        store(key, storage.lookup(key, oldKernelContext), STORE_REPLACE, oldKernelContext);
                    }
                }
                return;

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            case IBTreeConst.HYPER_BTREE:
                return new HyperBTree();
            case IBTreeConst.PATH_BTREE:
                return new PathBTree();
            case IBTreeConst.BTREE:
                return new BTree();
            default:
                return new BTree();
        }
    }

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Related Classes of org.chaidb.db.index.btree.BTree

org.chaidb.db.index.btree.bufmgr.PageNumber

org.chaidb.db.index.BTreeFactory

org.chaidb.db.index.InMemIndex

org.chaidb.db.index.Key

org.chaidb.db.log.logrecord.BTreeFreeOverflowPageLogRecord

org.chaidb.db.log.logrecord.BTreeFreePageWithDataLogRecord

java.util.Hashtable

org.chaidb.db.exception.ChaiDBException

java.util.ArrayList

java.util.Enumeration

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