Examples of org.apache.jackrabbit.spi.ItemId

org.apache.jackrabbit.spi.ItemId

An ItemId identifies an item using a combination of unique ID and path. There are three basic forms of an ItemId. The following table shows each of the allowed combinations where an X in the column indicates that a value is set and a - indicates that the value is null:

UniqueID	Path	Usage
X	-	The item can be identified with a unique ID. In most cases such an item is also mix:referenceable but there is no restriction in that respect. An SPI implementation may also use a unique ID to identify non-referenceable nodes. Whether a node is referenceable is purely governed by its node type or the assigned mixin types. Note, that the format of the ID it is left to the implementation.
-	X	The item can not be identified with a unique ID and none of its ancestors can be identified with a unique ID. The item is identified by an absolute path.
X	X	The item can not be identified with a unique ID but one of its ancestors can. {@link #getUniqueID} returns the unique ID of the nearest ancestor, whichcan be identified with a unique ID. The relative path provides a navigation path from the above mentioned ancestor to the item identified by the `ItemId`.

Two ItemIds should be considered equal if both the unique part and the path part are equal AND if they denote the same {@link #denotesNode() type} of ItemId.


            String href = DomUtil.getChildTextTrim(evElem, XML_HREF, NAMESPACE);


            int type = EventUtil.getJcrEventType(et[0].getName());
            Path eventPath = null;
            ItemId eventId = null;
            NodeId parentId = null;


            if (href != null) {
                try {
                    eventPath = uriResolver.getQPath(href, sessionInfo);

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            String href = DomUtil.getChildTextTrim(evElem, XML_HREF, NAMESPACE);


            int type = EventUtil.getJcrEventType(et[0].getName());
            Path eventPath = null;
            ItemId eventId = null;
            NodeId parentId = null;


            if (href != null) {
                href = resolve(baseUri, href);
                try {

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                Path parent = p.getAncestor(1);
                int type = e.getType();


                NodeId parentId = idFactory.createNodeId((String) null, parent);
                String identifier = e.getIdentifier();
                ItemId itemId;
                Node node = null;
                if (identifier != null) {
                    itemId = idFactory.fromJcrIdentifier(e.getIdentifier());
                    try {
                        node = session.getItem(e.getPath()).getParent();

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                // should not occur
                log.error("Internal error while building Event", e.getMessage());
                continue;
            }


            ItemId eventId = null;
            try {
                if (type == Event.NODE_ADDED || type == Event.NODE_REMOVED) {
                    eventId = uriResolver.getNodeId(href, sessionInfo);
                } else {
                    eventId = uriResolver.getPropertyId(href, sessionInfo);

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        // build itemId from the given state and the relative path without
        // making an attempt to retrieve the proper id of the item possibly
        // identified by the resulting id.
        // the server must be able to deal with paths and with proper ids anyway.
        // TODO: 'createNodeId' is basically wrong since isGranted is unspecific for any item.
        ItemId id = idFactory.createNodeId((NodeId) parentState.getWorkspaceId(), relPath);
        return service.isGranted(sessionInfo, id, actions);
    }

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    /**
     * @see javax.jcr.observation.Event#getIdentifier()
     */
    public String getIdentifier() throws RepositoryException {
        ItemId itemId = event.getItemId();
        if (itemId == null) {
            return null;
        } else {
            NodeId nodeId = (itemId.denotesNode()) ? (NodeId) itemId : ((PropertyId) itemId).getParentId();
            return idFactory.toJcrIdentifier(nodeId);
        }
    }

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    /**
     * @see NodeEntry#refresh(Event)
     */
    public void refresh(Event childEvent) {
        ItemId eventId = childEvent.getItemId();
        Path eventPath = childEvent.getPath();
        Name eventName = eventPath.getNameElement().getName();
        HierarchyEntry child = lookupEntry(eventId, eventPath);


        switch (childEvent.getType()) {
            case Event.NODE_ADDED:
            case Event.PROPERTY_ADDED:
                if (child == null || child.getStatus() == Status.REMOVED) {
                    // no such child or a colliding new child existed but got
                    // removed already -> add the new entry.
                    if (childEvent.getType() ==  Event.NODE_ADDED) {
                        String uniqueChildID = (eventId.getPath() == null) ? eventId.getUniqueID() : null;
                        int index = eventPath.getNameElement().getNormalizedIndex();
                        internalAddNodeEntry(eventName, uniqueChildID, index);
                    } else {
                        internalAddPropertyEntry(eventName, true);
                    }

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        // build itemId from the given state and the relative path without
        // making an attempt to retrieve the proper id of the item possibly
        // identified by the resulting id.
        // the server must be able to deal with paths and with proper ids anyway.
        // TODO: 'createNodeId' is basically wrong since isGranted is unspecific for any item.
        ItemId id = idFactory.createNodeId((NodeId) parentState.getWorkspaceId(), relPath);
        return service.isGranted(sessionInfo, id, actions);
    }

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                // should not occur
                log.error("Internal error while building Event", e.getMessage());
                continue;
            }


            ItemId eventId = null;
            try {
                if (type == Event.NODE_ADDED || type == Event.NODE_REMOVED) {
                    eventId = uriResolver.getNodeId(href, sessionInfo);
                } else {
                    eventId = uriResolver.getPropertyId(href, sessionInfo);

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    /**
     * @see NodeEntry#refresh(Event)
     */
    public void refresh(Event childEvent) {
        ItemId eventId = childEvent.getItemId();
        Path eventPath = childEvent.getPath();
        Name eventName = eventPath.getNameElement().getName();
        HierarchyEntry child = lookupEntry(eventId, eventPath);


        switch (childEvent.getType()) {
            case Event.NODE_ADDED:
            case Event.PROPERTY_ADDED:
                if (child == null || child.getStatus() == Status.REMOVED) {
                    // no such child or a colliding new child existed but got
                    // removed already -> add the new entry.
                    if (childEvent.getType() ==  Event.NODE_ADDED) {
                        String uniqueChildID = (eventId.getPath() == null) ? eventId.getUniqueID() : null;
                        int index = eventPath.getNameElement().getNormalizedIndex();
                        internalAddNodeEntry(eventName, uniqueChildID, index);
                    } else {
                        internalAddPropertyEntry(eventName, true);
                    }

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Related Classes of org.apache.jackrabbit.spi.ItemId

org.apache.jackrabbit.jcr2spi.hierarchy.NodeEntryImpl

org.apache.jackrabbit.jcr2spi.JcrVersionManager

org.apache.jackrabbit.jcr2spi.LazyItemIterator

org.apache.jackrabbit.jcr2spi.observation.EventImpl

org.apache.jackrabbit.jcr2spi.state.ItemState

org.apache.jackrabbit.jcr2spi.util.LogUtil

org.apache.jackrabbit.jcr2spi.WorkspaceManager

org.apache.jackrabbit.spi.commons.identifier.AbstractIdFactory$ItemIdImpl

org.apache.jackrabbit.spi.commons.identifier.SerializationTest

org.apache.jackrabbit.spi.commons.ItemInfoCacheImpl

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