Examples with Relationship org.structr.api.graph.Relationship used on opensource projects

Example 6 with Relationship

use of org.structr.api.graph.Relationship in project structr by structr.

the class SchemaImporter method analyzeSchema.

public void analyzeSchema() {
    final App app = StructrApp.getInstance();
    final FileBasedHashLongMap<NodeInfo> nodeIdMap = new FileBasedHashLongMap<>(userHome + File.separator + ".structrSchemaAnalyzer");
    final DatabaseService graphDb = app.getDatabaseService();
    final ConfigurationProvider configuration = Services.getInstance().getConfigurationProvider();
    final Set<NodeInfo> nodeTypes = new LinkedHashSet<>();
    final Set<RelationshipInfo> relationships = new LinkedHashSet<>();
    final Map<String, SchemaNode> schemaNodes = new LinkedHashMap<>();
    final Map<String, List<TypeInfo>> typeInfoTypeMap = new LinkedHashMap<>();
    final List<TypeInfo> reducedTypeInfos = new LinkedList<>();
    final List<TypeInfo> typeInfos = new LinkedList<>();
    Iterator<Relationship> relIterator = null;
    Iterator<Node> nodeIterator = null;
    info("Fetching all nodes iterator..");
    try (final Tx tx = app.tx()) {
        nodeIterator = Iterables.filter(new StructrAndSpatialPredicate(false, false, true), graphDb.getAllNodes()).iterator();
        tx.success();
    } catch (FrameworkException fex) {
        logger.warn("", fex);
    }
    info("Starting to analyze nodes..");
    bulkGraphOperation(SecurityContext.getSuperUserInstance(), nodeIterator, 100000, "Analyzing nodes", new BulkGraphOperation<Node>() {

        @Override
        public void handleGraphObject(final SecurityContext securityContext, final Node node) throws FrameworkException {
            final NodeInfo nodeInfo = new NodeInfo(node);
            // hashcode of nodeInfo is derived from its property and type signature!
            nodeTypes.add(nodeInfo);
            // add node ID to our new test datastructure
            nodeIdMap.add(nodeInfo, node.getId());
        }
    });
    info("Identifying common base classes..");
    try (final Tx tx = app.tx(true, false, false)) {
        // nodeTypes now contains all existing node types and their property sets
        identifyCommonBaseClasses(app, nodeTypes, nodeIdMap, typeInfos);
        tx.success();
    } catch (FrameworkException fex) {
        logger.warn("", fex);
    }
    info("Collecting type information..");
    try (final Tx tx = app.tx(true, false, false)) {
        // group type infos by type
        collectTypeInfos(typeInfos, typeInfoTypeMap);
        tx.success();
    } catch (FrameworkException fex) {
        logger.warn("", fex);
    }
    info("Aggregating type information..");
    try (final Tx tx = app.tx(true, false, false)) {
        // reduce type infos with more than one type
        reduceTypeInfos(typeInfoTypeMap, reducedTypeInfos);
        tx.success();
    } catch (FrameworkException fex) {
        logger.warn("", fex);
    }
    info("Identifying property sets..");
    try (final Tx tx = app.tx(true, false, false)) {
        // intersect property sets of type infos
        intersectPropertySets(reducedTypeInfos);
        tx.success();
    } catch (FrameworkException fex) {
        logger.warn("", fex);
    }
    info("Sorting result..");
    try (final Tx tx = app.tx(true, false, false)) {
        // sort type infos
        Collections.sort(reducedTypeInfos, new HierarchyComparator(false));
        tx.success();
    } catch (FrameworkException fex) {
        logger.warn("", fex);
    }
    final Map<String, TypeInfo> reducedTypeInfoMap = new LinkedHashMap<>();
    for (final TypeInfo info : reducedTypeInfos) {
        final String type = info.getPrimaryType();
        // map TypeInfo to type for later use
        reducedTypeInfoMap.put(type, info);
        info("Starting with setting of type and ID for type {}", type);
        bulkGraphOperation(SecurityContext.getSuperUserInstance(), info.getNodeIds().iterator(), 10000, "Setting type and ID", new BulkGraphOperation<Long>() {

            @Override
            public void handleGraphObject(SecurityContext securityContext, Long nodeId) throws FrameworkException {
                final Node node = graphDb.getNodeById(nodeId);
                node.setProperty(GraphObject.id.dbName(), NodeServiceCommand.getNextUuid());
                node.setProperty(GraphObject.type.dbName(), type);
            }
        });
    }
    info("Fetching all relationships iterator..");
    try (final Tx tx = app.tx(true, false, false)) {
        relIterator = Iterables.filter(new StructrAndSpatialPredicate(false, false, true), graphDb.getAllRelationships()).iterator();
        tx.success();
    } catch (FrameworkException fex) {
        logger.warn("", fex);
    }
    info("Starting with analyzing relationships..");
    bulkGraphOperation(SecurityContext.getSuperUserInstance(), relIterator, 10000, "Analyzing relationships", new BulkGraphOperation<Relationship>() {

        @Override
        public void handleGraphObject(SecurityContext securityContext, Relationship rel) throws FrameworkException {
            final Node startNode = rel.getStartNode();
            final Node endNode = rel.getEndNode();
            // make sure node has been successfully identified above
            if (startNode.hasProperty("type") && endNode.hasProperty("type")) {
                final String relationshipType = rel.getType().name();
                final String startNodeType = (String) startNode.getProperty("type");
                final String endNodeType = (String) endNode.getProperty("type");
                relationships.add(new RelationshipInfo(startNodeType, endNodeType, relationshipType));
                // create combined type on imported relationship
                if (startNodeType != null && endNodeType != null) {
                    final String combinedType = getCombinedType(startNodeType, relationshipType, endNodeType);
                    logger.debug("Combined relationship type {} found for rel type {}, start node type {}, end node type {}", new Object[] { combinedType, relationshipType, startNodeType, endNodeType });
                    rel.setProperty(GraphObject.type.dbName(), combinedType);
                }
                // create ID on imported relationship
                rel.setProperty(GraphObject.id.dbName(), NodeServiceCommand.getNextUuid());
            }
        }
    });
    info("Grouping relationships..");
    // group relationships by type
    final Map<String, List<RelationshipInfo>> relTypeInfoMap = new LinkedHashMap<>();
    for (final RelationshipInfo relInfo : relationships) {
        // final String relType         = relInfo.getRelType();
        final String combinedType = getCombinedType(relInfo.getStartNodeType(), relInfo.getRelType(), relInfo.getEndNodeType());
        List<RelationshipInfo> infos = relTypeInfoMap.get(combinedType);
        if (infos == null) {
            infos = new LinkedList<>();
            relTypeInfoMap.put(combinedType, infos);
        }
        infos.add(relInfo);
    }
    info("Aggregating relationship information..");
    final List<RelationshipInfo> reducedRelationshipInfos = new ArrayList<>();
    if (Settings.InheritanceDetection.getValue()) {
        // reduce relationship infos into one
        for (final List<RelationshipInfo> infos : relTypeInfoMap.values()) {
            reducedRelationshipInfos.addAll(reduceNodeTypes(infos, reducedTypeInfoMap));
        }
    } else {
        reducedRelationshipInfos.addAll(relationships);
    }
    info("Starting with schema node creation..");
    bulkGraphOperation(SecurityContext.getSuperUserInstance(), reducedTypeInfos.iterator(), 100000, "Creating schema nodes", new BulkGraphOperation<TypeInfo>() {

        @Override
        public void handleGraphObject(SecurityContext securityContext, TypeInfo typeInfo) throws FrameworkException {
            final String type = typeInfo.getPrimaryType();
            if (!"ReferenceNode".equals(type)) {
                final Map<String, Class> props = typeInfo.getPropertySet();
                final PropertyMap propertyMap = new PropertyMap();
                // add properties
                for (final Map.Entry<String, Class> propertyEntry : props.entrySet()) {
                    final String propertyName = propertyEntry.getKey();
                    final Class propertyType = propertyEntry.getValue();
                    // handle array types differently
                    String propertyTypeName = propertyType.getSimpleName();
                    if (propertyType.isArray()) {
                        // remove "[]" from the end and append "Array" to match the appropriate parser
                        propertyTypeName = propertyTypeName.substring(0, propertyTypeName.length() - 2).concat("Array");
                    }
                    propertyMap.put(new StringProperty("_".concat(propertyName)), propertyTypeName);
                }
                // set node type which is in "name" property
                propertyMap.put(AbstractNode.name, type);
                // check if there is an existing Structr entity with the same type
                // and make the dynamic class extend the existing class if yes.
                final Class existingType = configuration.getNodeEntityClass(type);
                if (existingType != null) {
                    propertyMap.put(SchemaNode.extendsClass, existingType.getName());
                } else if (!typeInfo.getOtherTypes().isEmpty()) {
                    // only the first supertype is supported
                    propertyMap.put(SchemaNode.extendsClass, typeInfo.getSuperclass(reducedTypeInfoMap));
                }
                final SchemaNode existingNode = app.nodeQuery(SchemaNode.class).andName(type).getFirst();
                if (existingNode != null) {
                    for (final Entry<PropertyKey, Object> entry : propertyMap.entrySet()) {
                        existingNode.setProperty(entry.getKey(), entry.getValue());
                    }
                    schemaNodes.put(type, existingNode);
                } else {
                    // create schema node
                    schemaNodes.put(type, app.create(SchemaNode.class, propertyMap));
                }
            }
        }
    });
    info("Starting with schema relationship creation..");
    bulkGraphOperation(SecurityContext.getSuperUserInstance(), reducedRelationshipInfos.iterator(), 100000, "Creating schema relationships", new BulkGraphOperation<RelationshipInfo>() {

        @Override
        public void handleGraphObject(SecurityContext securityContext, RelationshipInfo template) throws FrameworkException {
            final String startNodeType = template.getStartNodeType();
            final String endNodeType = template.getEndNodeType();
            if (startNodeType != null && endNodeType != null) {
                final SchemaNode startNode = schemaNodes.get(startNodeType);
                final SchemaNode endNode = schemaNodes.get(endNodeType);
                if (startNode != null && endNode != null) {
                    final String relationshipType = template.getRelType();
                    final PropertyMap propertyMap = new PropertyMap();
                    propertyMap.put(SchemaRelationshipNode.sourceId, startNode.getUuid());
                    propertyMap.put(SchemaRelationshipNode.targetId, endNode.getUuid());
                    propertyMap.put(SchemaRelationshipNode.relationshipType, relationshipType);
                    app.create(SchemaRelationshipNode.class, propertyMap);
                } else {
                    info("Unable to create schema relationship node for {} -> {}, no schema nodes found", startNodeType, endNodeType);
                }
            }
        }
    });
    info("Starting with index rebuild..");
    // rebuild index
    app.command(BulkRebuildIndexCommand.class).execute(Collections.EMPTY_MAP);
}

Example 7 with Relationship

use of org.structr.api.graph.Relationship in project structr by structr.

the class AbstractEndpoint method sort.

/**
 * Sort relationships by their Neo4j object graph id.
 *
 * @param rels
 * @return
 */
protected List<Relationship> sort(final Iterable<Relationship> rels) {
    List<Relationship> eagerList = new LinkedList<>();
    for (final Relationship r : rels) {
        eagerList.add(r);
    }
    Collections.sort(eagerList, new Comparator<Relationship>() {

        @Override
        public int compare(final Relationship r1, final Relationship r2) {
            return ((Long) r1.getId()).compareTo(r2.getId());
        }
    });
    return eagerList;
}

Example 8 with Relationship

use of org.structr.api.graph.Relationship in project structr by structr.

the class AbstractNode method getIncomingRelationship.

@Override
public final <A extends NodeInterface, B extends NodeInterface, T extends Target, R extends Relation<A, B, OneStartpoint<A>, T>> R getIncomingRelationship(final Class<R> type) {
    final RelationshipFactory<R> factory = new RelationshipFactory<>(securityContext);
    final R template = getRelationshipForType(type);
    final Relationship relationship = template.getSource().getRawSource(securityContext, dbNode, null);
    if (relationship != null) {
        return factory.adapt(relationship);
    }
    return null;
}

Example 9 with Relationship

use of org.structr.api.graph.Relationship in project structr by structr.

the class AbstractNode method getOutgoingRelationship.

@Override
public final <A extends NodeInterface, B extends NodeInterface, S extends Source, R extends Relation<A, B, S, OneEndpoint<B>>> R getOutgoingRelationship(final Class<R> type) {
    final RelationshipFactory<R> factory = new RelationshipFactory<>(securityContext);
    final R template = getRelationshipForType(type);
    final Relationship relationship = template.getTarget().getRawSource(securityContext, dbNode, null);
    if (relationship != null) {
        return factory.adapt(relationship);
    }
    return null;
}

Example 10 with Relationship

use of org.structr.api.graph.Relationship in project structr by structr.

the class NodeRelationshipStatisticsCommand method execute.

public Map<String, Long> execute(AbstractNode sNode, Direction dir) throws FrameworkException {
    final Map<String, Long> statistics = new LinkedHashMap<>();
    final Node node = sNode.getNode();
    Iterable<Relationship> rels = null;
    if (dir != null) {
        rels = node.getRelationships(dir);
    } else {
        rels = node.getRelationships();
    }
    try {
        // use temporary map to avoid frequent construction of Long values when increasing..
        Map<String, LongValueHolder> values = new LinkedHashMap<>();
        for (Relationship r : rels) {
            final String relType = r.getType().name();
            LongValueHolder count = values.get(relType);
            if (count == null) {
                count = new LongValueHolder();
                values.put(relType, count);
            }
            count.inc();
        }
        // create results from temporary map
        for (Entry<String, LongValueHolder> entry : values.entrySet()) {
            final String key = entry.getKey();
            LongValueHolder value = entry.getValue();
            statistics.put(key, value.getValue());
        }
    } catch (RuntimeException e) {
        logger.warn("Exception occured.", e);
    }
    return statistics;
}