Examples of org.jboss.dna.graph.request.ReadAllChildrenRequest

org.jboss.dna.graph.request.ReadAllChildrenRequest
Instruction to read all of the children of a node at a specific location.

     */
    public void process( DeleteChildrenRequest request ) {
        if (request == null) return;
        if (request.isCancelled()) return;
        // First get all of the children under the node ...
        ReadAllChildrenRequest readChildren = new ReadAllChildrenRequest(request.at(), request.inWorkspace());
        process(readChildren);
        if (readChildren.hasError()) {
            request.setError(readChildren.getError());
            return;
        }
        if (readChildren.isCancelled()) return;


        // Issue a DeleteBranchRequest for each child ...
        for (Location child : readChildren) {
            if (request.isCancelled()) return;
            DeleteBranchRequest deleteChild = new DeleteBranchRequest(child, request.inWorkspace());
            process(deleteChild);
            request.addDeletedChild(child);
        }


        // Set the actual location of the parent node ...
        request.setActualLocationOfNode(readChildren.getActualLocationOfNode());
    }

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                        continue;
                    }
                    while (child != null && child.isProxy()) {
                        if (!children.isEmpty()) {
                            // Take any children so far and simply record a ReadNodeRequest with results ...
                            ReadAllChildrenRequest placeholderRequest = new ReadAllChildrenRequest(placeholder.location(),
                                                                                                   request.inWorkspace());
                            placeholderRequest.addChildren(children);
                            if (firstRequest) {
                                firstRequest = false;
                            }
                            placeholderRequest.setActualLocationOfNode(placeholder.location());
                            federatedRequest.add(placeholderRequest, true, true, null);
                            children = new LinkedList<Location>();
                        }
                        // Now issue a VerifyNodeExistsRequest for the child.
                        // We'll mix these into the federated request along with the ReadNodeRequests ...
                        ProxyNode proxy = child.asProxy();
                        VerifyNodeExistsRequest verifyRequest = new VerifyNodeExistsRequest(proxy.location(),
                                                                                            proxy.workspaceName());
                        federatedRequest.add(verifyRequest, proxy.isSameLocationAsOriginal(), false, proxy.projection());
                        child = child.next();
                    }
                }
                if (!children.isEmpty() || firstRequest) {
                    // Submit the children so far ...
                    ReadAllChildrenRequest placeholderRequest = new ReadAllChildrenRequest(placeholder.location(),
                                                                                           request.inWorkspace());
                    placeholderRequest.addChildren(children);
                    if (firstRequest) {
                        firstRequest = false;
                    }
                    placeholderRequest.setActualLocationOfNode(placeholder.location());
                    federatedRequest.add(placeholderRequest, true, true, null);
                }
            } else if (projectedNode.isProxy()) {
                ProxyNode proxy = projectedNode.asProxy();
                // Create and submit a request for the projection ...
                ReadAllChildrenRequest pushDownRequest = new ReadAllChildrenRequest(proxy.location(), proxy.workspaceName());
                federatedRequest.add(pushDownRequest, proxy.isSameLocationAsOriginal(), false, proxy.projection());
            }
            projectedNode = projectedNode.next();
        }
        // Submit for processing ...

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     * 
     * @see org.jboss.dna.graph.request.processor.RequestProcessor#process(org.jboss.dna.graph.request.ReadAllChildrenRequest)
     */
    @Override
    public void process( ReadAllChildrenRequest request ) {
        ReadAllChildrenRequest source = (ReadAllChildrenRequest)federatedRequest.getFirstProjectedRequest().getRequest();
        if (checkErrorOrCancel(request, source)) return;
        request.setActualLocationOfNode(source.getActualLocationOfNode());
        for (Location childInSource : source.getChildren()) {
            request.addChild(childInSource);
        }
        request.setCachePolicy(getDefaultCachePolicy());
        setCacheableInfo(request, source.getCachePolicy());
    }

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                                                                            childSnsIndexes,
                                                                            projection);
                request.addChild(childInRepos);
                if (federatedPath == null) federatedPath = childInRepos.getPath().getParent();
            } else {
                ReadAllChildrenRequest readFromSource = (ReadAllChildrenRequest)sourceRequest;
                Location sourceLocation = readFromSource.getActualLocationOfNode();
                if (sourceLocation.hasIdProperties()) {
                    // Accumulate the identification properties ...
                    for (Property propertyInSource : sourceLocation.getIdProperties()) {
                        Name name = propertyInSource.getName();
                        Property existing = actualLocation.getIdProperty(name);
                        if (existing != null) {
                            // Merge the property values ...
                            propertyInSource = merge(existing, propertyInSource, propertyFactory, true);
                        }
                        actualLocation = actualLocation.with(propertyInSource);
                    }
                }


                // Make sure we have an actual location ...
                actualLocation = determineActualLocation(actualLocation, readFromSource.getActualLocationOfNode(), projection);
                if (federatedPath == null) federatedPath = actualLocation.getPath();


                // Add all the children from the source ...
                for (Location childInSource : readFromSource.getChildren()) {
                    request.addChild(getChildLocationWithCorrectSnsIndex(childInSource,
                                                                         federatedPath,
                                                                         childSnsIndexes,
                                                                         projection));
                }
                setCacheableInfo(request, readFromSource.getCachePolicy());
            }


            projectedRequest = projectedRequest.next();
            ++numMerged;
        }

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                    node.setProperties(read.getPropertiesByName());
                    node.setChildren(read.getChildren());
                } else if (request instanceof ReadBlockOfChildrenRequest) {
                    throw new IllegalStateException();
                } else if (request instanceof ReadAllChildrenRequest) {
                    ReadAllChildrenRequest read = (ReadAllChildrenRequest)request;
                    DateTime expires = computeExpirationTime(read);
                    getOrCreateNode(read.getActualLocationOfNode(), expires).setChildren(read.getChildren());
                } else if (request instanceof ReadBranchRequest) {
                    ReadBranchRequest read = (ReadBranchRequest)request;
                    DateTime expires = computeExpirationTime(read);
                    for (Location location : read) {
                        BatchResultsNode node = getOrCreateNode(location, expires);
                        node.setProperties(read.getPropertiesFor(location));
                        node.setChildren(read.getChildren(location));
                    }
                }
            }
            for (Map.Entry<Path, BatchResultsNode> entry : nodes.entrySet()) {
                entry.getValue().freeze();

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                node.setProperties(read.getPropertiesByName());
                node.setChildren(read.getChildren());
            } else if (request instanceof ReadBlockOfChildrenRequest) {
                throw new IllegalStateException();
            } else if (request instanceof ReadAllChildrenRequest) {
                ReadAllChildrenRequest read = (ReadAllChildrenRequest)request;
                DateTime expires = computeExpirationTime(read);
                getOrCreateNode(read.getActualLocationOfNode(), expires).setChildren(read.getChildren());
            } else if (request instanceof ReadBranchRequest) {
                ReadBranchRequest read = (ReadBranchRequest)request;
                DateTime expires = computeExpirationTime(read);
                for (Location location : read) {
                    BatchResultsNode node = getOrCreateNode(location, expires);
                    node.setProperties(read.getPropertiesFor(location));
                    node.setChildren(read.getChildren(location));
                }
            }
            for (Map.Entry<Path, BatchResultsNode> entry : nodes.entrySet()) {
                entry.getValue().freeze();
            }

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     * @param request the read request
     */
    public void process( ReadBlockOfChildrenRequest request ) {
        if (request == null) return;
        // Convert the request to a ReadAllChildrenRequest and execute it ...
        ReadAllChildrenRequest readAll = new ReadAllChildrenRequest(request.of(), request.inWorkspace());
        process(readAll);
        if (readAll.hasError()) {
            request.setError(readAll.getError());
            return;
        }
        List<Location> allChildren = readAll.getChildren();


        // If there aren't enough children for the block's range ...
        if (allChildren.size() < request.startingAtIndex()) return;


        // Now, find the children in the block ...
        int endIndex = Math.min(request.endingBefore(), allChildren.size());
        for (int i = request.startingAtIndex(); i != endIndex; ++i) {
            request.addChild(allChildren.get(i));
        }
        // Set the actual location ...
        request.setActualLocationOfNode(readAll.getActualLocationOfNode());
        setCacheableInfo(request);
    }

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            parentPath = actualSiblingLocation.getPath().getParent();
        }
        assert parentPath != null;


        // Convert the request to a ReadAllChildrenRequest and execute it ...
        ReadAllChildrenRequest readAll = new ReadAllChildrenRequest(Location.create(parentPath), request.inWorkspace());
        process(readAll);
        if (readAll.hasError()) {
            request.setError(readAll.getError());
            return;
        }
        List<Location> allChildren = readAll.getChildren();


        // Iterate through the children, looking for the 'startingAfter' child ...
        boolean found = false;
        int count = 0;
        for (Location child : allChildren) {

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        }
        // Set the actual location ...
        request.setActualLocationOfNode(readProperties.getActualLocationOfNode());


        // Read the children ...
        ReadAllChildrenRequest readChildren = new ReadAllChildrenRequest(request.at(), request.inWorkspace());
        process(readChildren);
        if (readChildren.hasError()) {
            request.setError(readChildren.getError());
            return;
        }
        if (request.isCancelled()) return;
        // Now, copy all of the results into the submitted request ...
        for (Property property : readProperties) {

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                        continue;
                    }
                    while (child != null && child.isProxy()) {
                        if (!children.isEmpty()) {
                            // Take any children so far and simply record a ReadNodeRequest with results ...
                            ReadAllChildrenRequest placeholderRequest = new ReadAllChildrenRequest(placeholder.location(),
                                                                                                   request.inWorkspace());
                            placeholderRequest.addChildren(children);
                            if (firstRequest) {
                                firstRequest = false;
                            }
                            placeholderRequest.setActualLocationOfNode(placeholder.location());
                            federatedRequest.add(placeholderRequest, true, true, null);
                            children = new LinkedList<Location>();
                        }
                        // Now issue a VerifyNodeExistsRequest for the child.
                        // We'll mix these into the federated request along with the ReadNodeRequests ...
                        ProxyNode proxy = child.asProxy();
                        VerifyNodeExistsRequest verifyRequest = new VerifyNodeExistsRequest(proxy.location(),
                                                                                            proxy.workspaceName());
                        federatedRequest.add(verifyRequest, proxy.isSameLocationAsOriginal(), false, proxy.projection());
                        child = child.next();
                    }
                }
                if (!children.isEmpty() || firstRequest) {
                    // Submit the children so far ...
                    ReadAllChildrenRequest placeholderRequest = new ReadAllChildrenRequest(placeholder.location(),
                                                                                           request.inWorkspace());
                    placeholderRequest.addChildren(children);
                    if (firstRequest) {
                        firstRequest = false;
                    }
                    placeholderRequest.setActualLocationOfNode(placeholder.location());
                    federatedRequest.add(placeholderRequest, true, true, null);
                }
            } else if (projectedNode.isProxy()) {
                ProxyNode proxy = projectedNode.asProxy();
                // Create and submit a request for the projection ...
                ReadAllChildrenRequest pushDownRequest = new ReadAllChildrenRequest(proxy.location(), proxy.workspaceName());
                federatedRequest.add(pushDownRequest, proxy.isSameLocationAsOriginal(), false, proxy.projection());
            }
            projectedNode = projectedNode.next();
        }
        // Submit for processing ...

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