Examples with NodeDelegate org.sirix.node.delegates.NodeDelegate used on opensource projects

Example 1 with NodeDelegate

use of org.sirix.node.delegates.NodeDelegate 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 NodeDelegate

use of org.sirix.node.delegates.NodeDelegate in project sirix by sirixdb.

the class NodePageTest method testSerializeDeserialize.

@Test
public void testSerializeDeserialize() throws IOException {
    final UnorderedKeyValuePage page1 = new UnorderedKeyValuePage(0L, PageKind.RECORDPAGE, Constants.NULL_ID_LONG, mPageReadTrx);
    assertEquals(0L, page1.getPageKey());
    final NodeDelegate del = new NodeDelegate(0, 1, 0, 0, Optional.of(SirixDeweyID.newRootID()));
    final StructNodeDelegate strucDel = new StructNodeDelegate(del, 12l, 4l, 3l, 1l, 0l);
    final NameNodeDelegate nameDel = new NameNodeDelegate(del, 5, 6, 7, 1);
    final ElementNode node1 = new ElementNode(strucDel, nameDel, new ArrayList<Long>(), HashBiMap.<Long, Long>create(), new ArrayList<Long>(), new QNm("a", "b", "c"));
    node1.insertAttribute(88L, 100);
    node1.insertAttribute(87L, 101);
    node1.insertNamespace(99L);
    node1.insertNamespace(98L);
    assertEquals(0L, node1.getNodeKey());
    page1.setEntry(node1.getNodeKey(), node1);
    final ByteArrayOutputStream out = new ByteArrayOutputStream();
    final DataOutputStream dataOut = new DataOutputStream(out);
    PagePersistenter.serializePage(dataOut, page1, SerializationType.DATA);
    final ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
    final UnorderedKeyValuePage page2 = (UnorderedKeyValuePage) PagePersistenter.deserializePage(new DataInputStream(in), mPageReadTrx, SerializationType.DATA);
    // assertEquals(position, out.position());
    final ElementNode element = (ElementNode) page2.getValue(0l);
    assertEquals(0L, page2.getValue(0l).getNodeKey());
    assertEquals(1L, element.getParentKey());
    assertEquals(12L, element.getFirstChildKey());
    assertEquals(3L, element.getLeftSiblingKey());
    assertEquals(4L, element.getRightSiblingKey());
    assertEquals(1, element.getChildCount());
    assertEquals(2, element.getAttributeCount());
    assertEquals(2, element.getNamespaceCount());
    assertEquals(88L, element.getAttributeKey(0));
    assertEquals(87L, element.getAttributeKey(1));
    assertEquals(99L, element.getNamespaceKey(0));
    assertEquals(98L, element.getNamespaceKey(1));
    assertEquals(5, ((NameNode) page2.getValue(0l)).getURIKey());
    assertEquals(6, ((NameNode) page2.getValue(0l)).getPrefixKey());
    assertEquals(7, ((NameNode) page2.getValue(0l)).getLocalNameKey());
    assertEquals(NamePageHash.generateHashForString("xs:untyped"), element.getTypeKey());
}

Example 3 with NodeDelegate

use of org.sirix.node.delegates.NodeDelegate in project sirix by sirixdb.

the class NodeFactoryImpl method createPathNode.

@Override
public PathNode createPathNode(@Nonnegative final long parentKey, @Nonnegative final long leftSibKey, final long rightSibKey, final long hash, @Nonnull final QNm name, @Nonnull final Kind kind, @Nonnegative final int level) throws SirixIOException {
    final int uriKey = NamePageHash.generateHashForString(name.getNamespaceURI());
    final int prefixKey = name.getPrefix() != null && !name.getPrefix().isEmpty() ? NamePageHash.generateHashForString(name.getPrefix()) : -1;
    final int localName = name.getLocalName() != null && !name.getLocalName().isEmpty() ? NamePageHash.generateHashForString(name.getLocalName()) : -1;
    final long revision = mPageWriteTrx.getRevisionNumber();
    final NodeDelegate nodeDel = new NodeDelegate(((PathSummaryPage) mPageWriteTrx.getActualRevisionRootPage().getPathSummaryPageReference().getPage()).getMaxNodeKey(0) + 1, parentKey, 0, revision, Optional.<SirixDeweyID>empty());
    final StructNodeDelegate structDel = new StructNodeDelegate(nodeDel, Fixed.NULL_NODE_KEY.getStandardProperty(), rightSibKey, leftSibKey, 0, 0);
    final NameNodeDelegate nameDel = new NameNodeDelegate(nodeDel, uriKey, prefixKey, localName, 0);
    return (PathNode) mPageWriteTrx.createEntry(nodeDel.getNodeKey(), new PathNode(nodeDel, structDel, nameDel, kind, 1, level), PageKind.PATHSUMMARYPAGE, 0, Optional.<UnorderedKeyValuePage>empty());
}

Example 4 with NodeDelegate

use of org.sirix.node.delegates.NodeDelegate in project sirix by sirixdb.

the class NodeFactoryImpl method createNamespaceNode.

@Override
public NamespaceNode createNamespaceNode(@Nonnegative final long parentKey, final QNm name, @Nonnegative final long pathNodeKey, final Optional<SirixDeweyID> id) throws SirixIOException {
    final long revision = mPageWriteTrx.getRevisionNumber();
    final NodeDelegate nodeDel = new NodeDelegate(mPageWriteTrx.getActualRevisionRootPage().getMaxNodeKey() + 1, parentKey, 0, revision, id);
    final int uriKey = mPageWriteTrx.createNameKey(name.getNamespaceURI(), Kind.NAMESPACE);
    final int prefixKey = name.getPrefix() != null && !name.getPrefix().isEmpty() ? mPageWriteTrx.createNameKey(name.getPrefix(), Kind.NAMESPACE) : -1;
    final NameNodeDelegate nameDel = new NameNodeDelegate(nodeDel, uriKey, prefixKey, -1, pathNodeKey);
    return (NamespaceNode) mPageWriteTrx.createEntry(nodeDel.getNodeKey(), new NamespaceNode(nodeDel, nameDel, name), PageKind.RECORDPAGE, -1, Optional.<UnorderedKeyValuePage>empty());
}

Example 5 with NodeDelegate

use of org.sirix.node.delegates.NodeDelegate in project sirix by sirixdb.

the class NodeFactoryImpl method createTextNode.

@Override
public TextNode createTextNode(@Nonnegative final long parentKey, @Nonnegative final long leftSibKey, @Nonnegative final long rightSibKey, @Nonnull final byte[] value, final boolean isCompressed, final Optional<SirixDeweyID> id) throws SirixIOException {
    final long revision = mPageWriteTrx.getRevisionNumber();
    final NodeDelegate nodeDel = new NodeDelegate(mPageWriteTrx.getActualRevisionRootPage().getMaxNodeKey() + 1, parentKey, 0, revision, id);
    final boolean compression = isCompressed && value.length > 10;
    final byte[] compressedValue = compression ? Compression.compress(value, Deflater.HUFFMAN_ONLY) : value;
    final ValNodeDelegate valDel = new ValNodeDelegate(nodeDel, compressedValue, compression);
    final StructNodeDelegate structDel = new StructNodeDelegate(nodeDel, Fixed.NULL_NODE_KEY.getStandardProperty(), rightSibKey, leftSibKey, 0, 0);
    return (TextNode) mPageWriteTrx.createEntry(nodeDel.getNodeKey(), new TextNode(valDel, structDel), PageKind.RECORDPAGE, -1, Optional.<UnorderedKeyValuePage>empty());
}