Examples with DocumentRootNode org.sirix.node.DocumentRootNode used on opensource projects

Example 1 with DocumentRootNode

use of org.sirix.node.DocumentRootNode in project sirix by sirixdb.

the class AVLTreeWriter method index.

/**
 * Checks if the specified token is already indexed; if yes, returns its reference. Otherwise,
 * creates a new index entry and returns a reference of the indexed token.
 *
 * @param key token to be indexed
 * @param value node key references
 * @param move determines if AVLNode cursor must be moved to document root/root node or not
 * @return indexed node key references
 * @throws SirixIOException if an I/O error occurs
 */
@SuppressWarnings("unchecked")
public V index(final K key, final V value, final MoveCursor move) throws SirixIOException {
    if (move == MoveCursor.TO_DOCUMENT_ROOT) {
        moveToDocumentRoot();
    }
    final RevisionRootPage root = mPageWriteTrx.getActualRevisionRootPage();
    if (mAVLTreeReader.getAVLNode() == null && ((DocumentRootNode) getNode()).getFirstChildKey() == Fixed.NULL_NODE_KEY.getStandardProperty()) {
        // Index is empty.. create root node.
        final long nodeKey = getNewNodeKey(root);
        final AVLNode<K, V> treeRoot = (AVLNode<K, V>) mPageWriteTrx.createEntry(nodeKey, new AVLNode<>(key, value, new NodeDelegate(nodeKey, Fixed.DOCUMENT_NODE_KEY.getStandardProperty(), 0, 0, Optional.<SirixDeweyID>empty())), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
        final DocumentRootNode document = (DocumentRootNode) mPageWriteTrx.prepareEntryForModification(Fixed.DOCUMENT_NODE_KEY.getStandardProperty(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
        document.setFirstChildKey(treeRoot.getNodeKey());
        document.incrementChildCount();
        document.incrementDescendantCount();
        return value;
    }
    if (move == MoveCursor.TO_DOCUMENT_ROOT || mAVLTreeReader.getAVLNode() == null) {
        moveToDocumentRoot();
        moveToFirstChild();
    }
    AVLNode<K, V> node = mAVLTreeReader.getAVLNode();
    while (true) {
        final int c = key.compareTo(node.getKey());
        if (c == 0) {
            if (!value.equals(node.getValue())) {
                final AVLNode<K, V> avlNode = (AVLNode<K, V>) mPageWriteTrx.prepareEntryForModification(node.getNodeKey(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
                avlNode.setValue(value);
            }
            return node.getValue();
        }
        final boolean moved = c < 0 ? moveToFirstChild().hasMoved() : moveToLastChild().hasMoved();
        if (moved) {
            node = mAVLTreeReader.getAVLNode();
            continue;
        }
        final long nodeKey = getNewNodeKey(root);
        final AVLNode<K, V> child = (AVLNode<K, V>) mPageWriteTrx.createEntry(nodeKey, new AVLNode<>(key, value, new NodeDelegate(nodeKey, node.getNodeKey(), 0, 0, Optional.<SirixDeweyID>empty())), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
        node = (AVLNode<K, V>) mPageWriteTrx.prepareEntryForModification(node.getNodeKey(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
        if (c < 0) {
            node.setLeftChildKey(child.getNodeKey());
            adjust(child);
        } else {
            node.setRightChildKey(child.getNodeKey());
            adjust(child);
        }
        final DocumentRootNode document = (DocumentRootNode) mPageWriteTrx.prepareEntryForModification(Fixed.DOCUMENT_NODE_KEY.getStandardProperty(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
        document.incrementDescendantCount();
        return value;
    }
}

Example 2 with DocumentRootNode

use of org.sirix.node.DocumentRootNode in project sirix by sirixdb.

the class AVLTreeWriter method rotateRight.

/**
 * Right rotation.
 *
 * @param node node to be rotated
 * @throws SirixIOException if an I/O error occurs
 */
@SuppressWarnings({ "unchecked" })
private void rotateRight(AVLNode<K, V> node) throws SirixIOException {
    moveTo(node.getNodeKey());
    AVLNode<K, V> leftChild = ((AVLTreeReader<K, V>) moveToFirstChild().get()).getAVLNode();
    node = (AVLNode<K, V>) mPageWriteTrx.prepareEntryForModification(node.getNodeKey(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
    node.setLeftChildKey(leftChild.getRightChildKey());
    if (leftChild.hasRightChild()) {
        final Node leftRightChild = (Node) mPageWriteTrx.prepareEntryForModification(leftChild.getRightChildKey(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
        leftRightChild.setParentKey(node.getNodeKey());
    }
    leftChild = (AVLNode<K, V>) mPageWriteTrx.prepareEntryForModification(leftChild.getNodeKey(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
    leftChild.setParentKey(node.getParentKey());
    if (node.getParentKey() == Fixed.DOCUMENT_NODE_KEY.getStandardProperty()) {
        final DocumentRootNode parent = (DocumentRootNode) mPageWriteTrx.prepareEntryForModification(Fixed.DOCUMENT_NODE_KEY.getStandardProperty(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
        parent.setFirstChildKey(leftChild.getNodeKey());
    } else if (moveTo(node.getParentKey()).hasMoved() && mAVLTreeReader.getAVLNode().getRightChildKey() == node.getNodeKey()) {
        final AVLNode<K, V> parent = (AVLNode<K, V>) mPageWriteTrx.prepareEntryForModification(mAVLTreeReader.getNodeKey(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
        parent.setRightChildKey(leftChild.getNodeKey());
    } else {
        final AVLNode<K, V> parent = (AVLNode<K, V>) mPageWriteTrx.prepareEntryForModification(mAVLTreeReader.getNodeKey(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
        parent.setLeftChildKey(leftChild.getNodeKey());
    }
    leftChild = (AVLNode<K, V>) mPageWriteTrx.prepareEntryForModification(leftChild.getNodeKey(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
    leftChild.setRightChildKey(node.getNodeKey());
    node = (AVLNode<K, V>) mPageWriteTrx.prepareEntryForModification(node.getNodeKey(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
    node.setParentKey(leftChild.getNodeKey());
}

Example 3 with DocumentRootNode

use of org.sirix.node.DocumentRootNode in project sirix by sirixdb.

the class PageUtils method createTree.

/**
 * Create the initial tree structure.
 *
 * @param reference reference from revision root
 * @param pageKind the page kind
 */
public static void createTree(@Nonnull PageReference reference, final PageKind pageKind, final int index, final PageReadTrx pageReadTrx, final TransactionIntentLog log) {
    Page page = null;
    // Level page count exponent from the configuration.
    final int[] levelPageCountExp = pageReadTrx.getUberPage().getPageCountExp(pageKind);
    // Remaining levels.
    for (int i = 0, l = levelPageCountExp.length; i < l; i++) {
        page = new IndirectPage();
        log.put(reference, new PageContainer(page, page));
        reference = page.getReference(0);
    }
    // Create new record page.
    final UnorderedKeyValuePage ndp = new UnorderedKeyValuePage(Fixed.ROOT_PAGE_KEY.getStandardProperty(), pageKind, Constants.NULL_ID_LONG, pageReadTrx);
    // Create a {@link DocumentRootNode}.
    final Optional<SirixDeweyID> id = pageReadTrx.getResourceManager().getResourceConfig().mDeweyIDsStored ? Optional.of(SirixDeweyID.newRootID()) : Optional.empty();
    final NodeDelegate nodeDel = new NodeDelegate(Fixed.DOCUMENT_NODE_KEY.getStandardProperty(), Fixed.NULL_NODE_KEY.getStandardProperty(), Fixed.NULL_NODE_KEY.getStandardProperty(), 0, id);
    final StructNodeDelegate strucDel = new StructNodeDelegate(nodeDel, Fixed.NULL_NODE_KEY.getStandardProperty(), Fixed.NULL_NODE_KEY.getStandardProperty(), Fixed.NULL_NODE_KEY.getStandardProperty(), 0, 0);
    ndp.setEntry(0L, new DocumentRootNode(nodeDel, strucDel));
    log.put(reference, new PageContainer(ndp, ndp));
}

Example 4 with DocumentRootNode

use of org.sirix.node.DocumentRootNode in project sirix by sirixdb.

the class AVLTreeWriter method rotateLeft.

/**
 * Left rotation.
 *
 * @param node node to be rotated
 * @throws SirixIOException if an I/O error occurs
 */
@SuppressWarnings({ "unchecked" })
private void rotateLeft(AVLNode<K, V> node) throws SirixIOException {
    moveTo(node.getNodeKey());
    AVLNode<K, V> right = ((AVLTreeReader<K, V>) moveToLastChild().get()).getAVLNode();
    node = (AVLNode<K, V>) mPageWriteTrx.prepareEntryForModification(node.getNodeKey(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
    node.setRightChildKey(right.getLeftChildKey());
    if (right.hasLeftChild()) {
        final AVLNode<K, V> rightLeftChild = (AVLNode<K, V>) mPageWriteTrx.prepareEntryForModification(right.getLeftChildKey(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
        rightLeftChild.setParentKey(node.getNodeKey());
    }
    right = (AVLNode<K, V>) mPageWriteTrx.prepareEntryForModification(right.getNodeKey(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
    right.setParentKey(node.getParentKey());
    if (node.getParentKey() == Fixed.DOCUMENT_NODE_KEY.getStandardProperty()) {
        final DocumentRootNode parent = (DocumentRootNode) mPageWriteTrx.prepareEntryForModification(Fixed.DOCUMENT_NODE_KEY.getStandardProperty(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
        parent.setFirstChildKey(right.getNodeKey());
    } else if (moveTo(node.getParentKey()).hasMoved() && mAVLTreeReader.getAVLNode().getLeftChildKey() == node.getNodeKey()) {
        final AVLNode<K, V> parent = (AVLNode<K, V>) mPageWriteTrx.prepareEntryForModification(mAVLTreeReader.getNodeKey(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
        parent.setLeftChildKey(right.getNodeKey());
    } else {
        final AVLNode<K, V> parent = (AVLNode<K, V>) mPageWriteTrx.prepareEntryForModification(mAVLTreeReader.getNodeKey(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
        parent.setRightChildKey(right.getNodeKey());
    }
    right = (AVLNode<K, V>) mPageWriteTrx.prepareEntryForModification(right.getNodeKey(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
    right.setLeftChildKey(node.getNodeKey());
    node = (AVLNode<K, V>) mPageWriteTrx.prepareEntryForModification(node.getNodeKey(), mAVLTreeReader.mPageKind, mAVLTreeReader.mIndex, Optional.<UnorderedKeyValuePage>empty());
    node.setParentKey(right.getNodeKey());
}