Examples with FamilyInstance eu.esdihumboldt.hale.common.instance.model.FamilyInstance used on opensource projects

Example 11 with FamilyInstance

use of eu.esdihumboldt.hale.common.instance.model.FamilyInstance in project hale by halestudio.

the class JoinHandler method partitionInstances.

// For now no support for using the same type more than once in a join.
/**
 * @see eu.esdihumboldt.hale.common.align.transformation.function.InstanceHandler#partitionInstances(eu.esdihumboldt.hale.common.instance.model.InstanceCollection,
 *      java.lang.String,
 *      eu.esdihumboldt.hale.common.align.transformation.engine.TransformationEngine,
 *      com.google.common.collect.ListMultimap, java.util.Map,
 *      eu.esdihumboldt.hale.common.align.transformation.report.TransformationLog)
 */
@Override
public ResourceIterator<FamilyInstance> partitionInstances(InstanceCollection instances, String transformationIdentifier, TransformationEngine engine, ListMultimap<String, ParameterValue> transformationParameters, Map<String, String> executionParameters, TransformationLog log) throws TransformationException {
    if (transformationParameters == null || !transformationParameters.containsKey(PARAMETER_JOIN) || transformationParameters.get(PARAMETER_JOIN).isEmpty()) {
        throw new TransformationException("No join parameter defined");
    }
    JoinParameter joinParameter = transformationParameters.get(PARAMETER_JOIN).get(0).as(JoinParameter.class);
    String validation = joinParameter.validate();
    if (validation != null)
        throw new TransformationException("Join parameter invalid: " + validation);
    List<TypeEntityDefinition> types = joinParameter.getTypes();
    JoinDefinition joinDefinition = JoinUtil.getJoinDefinition(joinParameter);
    // JoinProperty -> (Value -> Collection<Reference>)
    Map<PropertyEntityDefinition, Multimap<Object, InstanceReference>> index = new HashMap<>();
    for (PropertyEntityDefinition property : joinDefinition.properties.values()) index.put(property, ArrayListMultimap.<Object, InstanceReference>create());
    // remember instances of first type to start join afterwards
    Collection<InstanceReference> startInstances = new LinkedList<InstanceReference>();
    // iterate once over all instances
    ResourceIterator<Instance> iterator = instances.iterator();
    try {
        while (iterator.hasNext()) {
            Instance next = iterator.next();
            // remember instances of first type
            if (next.getDefinition().equals(types.get(0).getDefinition())) {
                startInstances.add(instances.getReference(next));
            }
            // fill index over needed properties
            for (PropertyEntityDefinition property : joinDefinition.properties.get(next.getDefinition())) {
                // XXX what about null? for now ignore null values
                // XXX how to treat multiple values? must all be equal (in
                // order?) or only one?
                Collection<Object> values = AlignmentUtil.getValues(next, property, true);
                if (values != null && !values.isEmpty()) {
                    // XXX take only first value for now
                    index.get(property).put(valueProcessor.processValue(values.iterator().next(), property), instances.getReference(next));
                }
            }
        }
    } finally {
        iterator.close();
    }
    return new JoinIterator(instances, startInstances, joinDefinition.directParent, index, joinDefinition.joinTable, valueProcessor);
}

Example 12 with FamilyInstance

use of eu.esdihumboldt.hale.common.instance.model.FamilyInstance in project hale by halestudio.

the class AbstractMergeHandler method partitionInstances.

/**
 * @see InstanceHandler#partitionInstances(InstanceCollection, String,
 *      TransformationEngine, ListMultimap, Map, TransformationLog)
 */
@Override
public ResourceIterator<FamilyInstance> partitionInstances(InstanceCollection instances, String transformationIdentifier, TransformationEngine engine, ListMultimap<String, ParameterValue> transformationParameters, Map<String, String> executionParameters, TransformationLog log) throws TransformationException {
    T mergeConfig = createMergeConfiguration(transformationIdentifier, transformationParameters, executionParameters, log);
    // create merge index over all instances (references)
    Multimap<K, InstanceReference> index = HashMultimap.create();
    ResourceIterator<Instance> it = instances.iterator();
    try {
        while (it.hasNext()) {
            Instance instance = it.next();
            K key = getMergeKey(instance, mergeConfig);
            index.put(key, instances.getReference(instance));
        }
    } finally {
        it.close();
    }
    return new MergedIterator(index, instances, mergeConfig);
}

Example 13 with FamilyInstance

use of eu.esdihumboldt.hale.common.instance.model.FamilyInstance in project hale by halestudio.

the class IndexMergeHandler method partitionInstances.

/**
 * @see eu.esdihumboldt.cst.functions.core.merge.AbstractMergeHandler#partitionInstances(eu.esdihumboldt.hale.common.instance.model.InstanceCollection,
 *      java.lang.String,
 *      eu.esdihumboldt.hale.common.align.transformation.engine.TransformationEngine,
 *      com.google.common.collect.ListMultimap, java.util.Map,
 *      eu.esdihumboldt.hale.common.align.transformation.report.TransformationLog)
 */
@Override
public ResourceIterator<FamilyInstance> partitionInstances(InstanceCollection instances, String transformationIdentifier, TransformationEngine engine, ListMultimap<String, ParameterValue> transformationParameters, Map<String, String> executionParameters, TransformationLog log) throws TransformationException {
    PropertiesMergeHandler fallbackHandler = new PropertiesMergeHandler();
    InstanceIndexService indexService = serviceProvider.getService(InstanceIndexService.class);
    if (indexService == null) {
        log.warn(MessageFormat.format("Index service not available, falling back to merge handler {0}", fallbackHandler.getClass().getCanonicalName()));
        return fallbackHandler.partitionInstances(instances, transformationIdentifier, engine, transformationParameters, executionParameters, log);
    }
    final IndexMergeConfig mergeConfig = createMergeConfiguration(transformationParameters);
    QName typeName;
    try (ResourceIterator<Instance> it = instances.iterator()) {
        if (it.hasNext()) {
            typeName = it.next().getDefinition().getName();
        } else {
            // Nothing to partition
            return new ResourceIterator<FamilyInstance>() {

                @Override
                public boolean hasNext() {
                    return false;
                }

                @Override
                public FamilyInstance next() {
                    return null;
                }

                @Override
                public void close() {
                // Do nothing
                }
            };
        }
    }
    // Querying the index will yield a result over all instances. We must,
    // however, be able to operate only on the given input instances instead
    // of all instances.
    // We must, therefore, be able to uniquely identify every instance in
    // the index, so that we can retain from the index query only the
    // relevant instances.
    List<Object> inputInstanceIds = new ArrayList<>();
    try (ResourceIterator<Instance> it = instances.iterator()) {
        while (it.hasNext()) {
            Instance i = InstanceDecorator.getRoot(it.next());
            if (!Identifiable.is(i)) {
                log.warn(MessageFormat.format("At least one instance does not have an ID, falling back to merge handler {0}", fallbackHandler.getClass().getCanonicalName()));
                return fallbackHandler.partitionInstances(instances, transformationIdentifier, engine, transformationParameters, executionParameters, log);
            }
            inputInstanceIds.add(Identifiable.getId(i));
        }
    }
    Collection<Collection<ResolvableInstanceReference>> partitionedIndex = indexService.groupBy(typeName, mergeConfig.keyProperties);
    // Remove instance groups from the partitioned index where none of the
    // instances in the group are in the processed instances.
    partitionedIndex.removeIf(part -> !part.stream().map(ref -> ref.getId()).anyMatch(id -> inputInstanceIds.contains(id)));
    Iterator<Collection<ResolvableInstanceReference>> it = partitionedIndex.iterator();
    return new ResourceIterator<FamilyInstance>() {

        @Override
        public boolean hasNext() {
            return it.hasNext();
        }

        @Override
        public FamilyInstance next() {
            Collection<ResolvableInstanceReference> instanceRefs = it.next();
            InstanceCollection instancesToBeMerged = new DefaultInstanceCollection(instanceRefs.stream().map(ref -> ref.resolve()).collect(Collectors.toList()));
            return new FamilyInstanceImpl(merge(instancesToBeMerged, mergeConfig));
        }

        @Override
        public void close() {
        // TODO Auto-generated method stub
        }
    };
}

Example 14 with FamilyInstance

use of eu.esdihumboldt.hale.common.instance.model.FamilyInstance in project hale by halestudio.

the class ConceptualSchemaTransformer method doTypeTransformation.

/**
 * Execute a type transformation based on single type cell
 *
 * @param transformation the transformation to use
 * @param typeCell the type cell
 * @param target the target instance sink
 * @param source the source instances
 * @param alignment the alignment
 * @param engines the engine manager
 * @param transformer the property transformer
 * @param context the transformation execution context
 * @param reporter the reporter
 * @param progressIndicator the progress indicator
 */
@SuppressWarnings({ "rawtypes", "unchecked" })
protected void doTypeTransformation(TypeTransformationFactory transformation, Cell typeCell, InstanceCollection source, InstanceSink target, Alignment alignment, EngineManager engines, PropertyTransformer transformer, TransformationContext context, TransformationReporter reporter, ProgressIndicator progressIndicator) {
    TransformationLog cellLog = new CellLog(reporter, typeCell);
    TypeTransformation<?> function;
    try {
        function = transformation.createExtensionObject();
    } catch (Exception e) {
        reporter.error(new TransformationMessageImpl(typeCell, "Error creating transformation function.", e));
        return;
    }
    TransformationEngine engine = engines.get(transformation.getEngineId(), cellLog);
    if (engine == null) {
        // TODO instead try another transformation
        cellLog.error(cellLog.createMessage("Skipping type transformation: No matching transformation engine found", null));
        return;
    }
    // prepare transformation configuration
    ListMultimap<String, Type> targetTypes = ArrayListMultimap.create();
    for (Entry<String, ? extends Entity> entry : typeCell.getTarget().entries()) {
        targetTypes.put(entry.getKey(), (Type) entry.getValue());
    }
    ListMultimap<String, ParameterValue> parameters = typeCell.getTransformationParameters();
    if (parameters != null) {
        parameters = Multimaps.unmodifiableListMultimap(parameters);
    }
    Map<String, String> executionParameters = transformation.getExecutionParameters();
    // break on cancel
    if (progressIndicator.isCanceled()) {
        return;
    }
    ResourceIterator<FamilyInstance> iterator;
    if (typeCell.getSource() == null || typeCell.getSource().isEmpty()) {
        // type cell w/o source
        // -> execute exactly once w/ null source
        source = null;
        iterator = new GenericResourceIteratorAdapter<Object, FamilyInstance>(Collections.singleton(null).iterator()) {

            @Override
            protected FamilyInstance convert(Object next) {
                return null;
            }
        };
    } else {
        // Step 1: selection
        // Select only instances that are relevant for the transformation.
        source = source.select(new TypeCellFilter(typeCell));
        // Step 2: partition
        // use InstanceHandler if available - for example merge or join
        function.setExecutionContext(context.getCellContext(typeCell));
        InstanceHandler instanceHandler = function.getInstanceHandler();
        if (instanceHandler != null) {
            injectTransformationContext(instanceHandler, context);
            progressIndicator.setCurrentTask("Perform instance partitioning");
            try {
                iterator = instanceHandler.partitionInstances(source, transformation.getFunctionId(), engine, parameters, executionParameters, cellLog);
            } catch (TransformationException e) {
                cellLog.error(cellLog.createMessage("Type transformation: partitioning failed", e));
                return;
            }
        } else {
            // else just use every instance as is
            iterator = new GenericResourceIteratorAdapter<Instance, FamilyInstance>(source.iterator()) {

                @Override
                protected FamilyInstance convert(Instance next) {
                    return new FamilyInstanceImpl(next);
                }
            };
        }
    }
    progressIndicator.setCurrentTask("Execute type transformations");
    try {
        while (iterator.hasNext()) {
            // break on cancel
            if (progressIndicator.isCanceled()) {
                return;
            }
            function.setSource(iterator.next());
            function.setPropertyTransformer(transformer);
            function.setParameters(parameters);
            function.setTarget(targetTypes);
            function.setExecutionContext(context.getCellContext(typeCell));
            try {
                ((TypeTransformation) function).execute(transformation.getFunctionId(), engine, executionParameters, cellLog, typeCell);
            } catch (TransformationException e) {
                cellLog.error(cellLog.createMessage("Type transformation failed, skipping instance.", e));
            }
        }
    } finally {
        iterator.close();
    }
}