Examples with PathLevelFilter org.sirix.axis.filter.PathLevelFilter used on opensource projects

Example 1 with PathLevelFilter

use of org.sirix.axis.filter.PathLevelFilter in project sirix by sirixdb.

the class PathSummaryWriter method processFoundPathNode.

/**
 * Process a found path node.
 *
 * @param oldPathNodeKey key of old path node
 * @param newPathNodeKey key of new path node
 * @param oldNodeKey key of old node
 * @param uriKey key of URI
 * @param prefixKey key of prefix
 * @param localNameKey key of local name
 * @param remove determines if a {@link PathNode} must be removed or not
 * @param type type of operation
 * @throws SirixException if Sirix fails to do so
 */
private void processFoundPathNode(@Nonnegative final long oldPathNodeKey, @Nonnegative final long newPathNodeKey, @Nonnegative final long oldNodeKey, final int uriKey, final int prefixKey, final int localNameKey, final Remove remove, final OPType type) throws SirixException {
    final PathSummaryReader cloned = PathSummaryReader.getInstance(mPageWriteTrx, mNodeRtx.getResourceManager());
    boolean moved = cloned.moveTo(oldPathNodeKey).hasMoved();
    assert moved;
    // Set new reference count of the root.
    if (type != OPType.MOVEDSAMELEVEL) {
        final PathNode currNode = (PathNode) mPageWriteTrx.prepareEntryForModification(mPathSummaryReader.getNodeKey(), PageKind.PATHSUMMARYPAGE, 0, Optional.<UnorderedKeyValuePage>empty());
        currNode.setReferenceCount(currNode.getReferences() + cloned.getReferences());
        currNode.setLocalNameKey(localNameKey);
        currNode.setPrefixKey(prefixKey);
        currNode.setURIKey(uriKey);
    }
    // For all old path nodes: Merge paths and adapt reference counts.
    mPathSummaryReader.moveToFirstChild();
    final int oldLevel = cloned.getLevel();
    for (final Axis oldDescendants = new DescendantAxis(cloned); oldDescendants.hasNext(); ) {
        oldDescendants.next();
        // Search for new path entry.
        final Axis axis = new FilterAxis(new LevelOrderAxis.Builder(mPathSummaryReader).filterLevel(cloned.getLevel() - oldLevel).includeSelf().build(), new NameFilter(mPathSummaryReader, Utils.buildName(cloned.getName())), new PathKindFilter(mPathSummaryReader, cloned.getPathKind()), new PathLevelFilter(mPathSummaryReader, cloned.getLevel()));
        if (axis.hasNext()) {
            axis.next();
            // Set new reference count.
            if (type != OPType.MOVEDSAMELEVEL) {
                final PathNode currNode = (PathNode) mPageWriteTrx.prepareEntryForModification(mPathSummaryReader.getNodeKey(), PageKind.PATHSUMMARYPAGE, 0, Optional.<UnorderedKeyValuePage>empty());
                currNode.setReferenceCount(currNode.getReferences() + cloned.getReferences());
            }
        } else {
            // Insert new node.
            insertPathAsFirstChild(cloned.getName(), cloned.getPathKind(), mPathSummaryReader.getLevel() + 1);
            // Set new reference count.
            final PathNode currNode = (PathNode) mPageWriteTrx.prepareEntryForModification(mPathSummaryReader.getNodeKey(), PageKind.PATHSUMMARYPAGE, 0, Optional.<UnorderedKeyValuePage>empty());
            currNode.setReferenceCount(cloned.getReferences());
        }
        mPathSummaryReader.moveTo(newPathNodeKey);
    }
    // Set new path nodes of the changed nodes, that is set their PCR
    // references.
    mPathSummaryReader.moveTo(newPathNodeKey);
    mNodeRtx.moveTo(oldNodeKey);
    boolean first = true;
    for (final Axis axis = new DescendantAxis(mNodeRtx, IncludeSelf.YES); axis.hasNext(); ) {
        axis.next();
        if (first && type == OPType.SETNAME) {
            first = false;
        } else if (mNodeRtx.getNode() instanceof ImmutableNameNode) {
            cloned.moveTo(((NameNode) mNodeRtx.getCurrentNode()).getPathNodeKey());
            resetPath(newPathNodeKey, cloned.getLevel());
            if (mNodeRtx.getNode().getKind() == Kind.ELEMENT) {
                final ElementNode element = (ElementNode) mNodeRtx.getCurrentNode();
                for (int i = 0, nspCount = element.getNamespaceCount(); i < nspCount; i++) {
                    mNodeRtx.moveToNamespace(i);
                    cloned.moveTo(((NameNode) mNodeRtx.getCurrentNode()).getPathNodeKey());
                    resetPath(newPathNodeKey, cloned.getLevel());
                    mNodeRtx.moveToParent();
                }
                for (int i = 0, attCount = element.getAttributeCount(); i < attCount; i++) {
                    mNodeRtx.moveToAttribute(i);
                    cloned.moveTo(((NameNode) mNodeRtx.getCurrentNode()).getPathNodeKey());
                    resetPath(newPathNodeKey, cloned.getLevel());
                    mNodeRtx.moveToParent();
                }
            }
        }
    }
    // Then: Remove old nodes.
    if (remove == Remove.YES) {
        mPathSummaryReader.moveTo(oldPathNodeKey);
        removePathSummaryNode(remove);
    }
}

Example 2 with PathLevelFilter

use of org.sirix.axis.filter.PathLevelFilter in project sirix by sirixdb.

the class PathSummaryWriter method resetPath.

/**
 * Reset the path node key of a node.
 *
 * @param newPathNodeKey path node key of new path node
 * @param oldLevel old level of node
 * @throws SirixIOException if an I/O error occurs
 */
private void resetPath(@Nonnegative final long newPathNodeKey, @Nonnegative final int oldLevel) throws SirixIOException {
    // Search for new path entry.
    mPathSummaryReader.moveTo(newPathNodeKey);
    final Axis filterAxis = new FilterAxis(new LevelOrderAxis.Builder(mPathSummaryReader).includeSelf().build(), new NameFilter(mPathSummaryReader, Utils.buildName(mNodeRtx.getName())), new PathKindFilter(mPathSummaryReader, mNodeRtx.getKind()), new PathLevelFilter(mPathSummaryReader, oldLevel));
    if (filterAxis.hasNext()) {
        filterAxis.next();
        // Set new path node.
        final NameNode node = (NameNode) mPageWriteTrx.prepareEntryForModification(mNodeRtx.getNodeKey(), PageKind.RECORDPAGE, -1, Optional.<UnorderedKeyValuePage>empty());
        node.setPathNodeKey(mPathSummaryReader.getNodeKey());
    } else {
        throw new IllegalStateException();
    }
}