Examples with MultiValue eu.esdihumboldt.cst.MultiValue used on opensource projects

Example 1 with MultiValue

use of eu.esdihumboldt.cst.MultiValue in project hale by halestudio.

the class AsMultiValueMetaClass method convertArrayToMultiValue.

/**
 * Converts an object that is an array to a MultiValue.
 *
 * @param array the array object
 * @return the MultiValue representing the array
 */
private static MultiValue convertArrayToMultiValue(Object array) {
    Class<?> ofArray = array.getClass().getComponentType();
    if (ofArray.isPrimitive()) {
        MultiValue ar = new MultiValue();
        int length = Array.getLength(array);
        for (int i = 0; i < length; i++) {
            ar.add(Array.get(array, i));
        }
        return ar;
    } else {
        return new MultiValue(Arrays.asList((Object[]) array));
    }
}

Example 2 with MultiValue

use of eu.esdihumboldt.cst.MultiValue in project hale by halestudio.

the class FunctionExecutor method processValue.

/**
 * Processes the given value. Does not handle {@link MultiValue}!
 *
 * @param cellLog the transformation log
 * @param function the property function
 * @param value the value to process
 * @param node the target node
 * @return the processed value
 */
private Object processValue(TransformationLog cellLog, PropertyTransformation<?> function, Object value, TargetNode node) {
    if (function.allowAutomatedResultConversion()) {
        if (!(value instanceof Group)) {
            // convert value for target
            try {
                value = convert(value, toPropertyEntityDefinition(node.getEntityDefinition()));
            } catch (Throwable e) {
                // ignore, but create error
                cellLog.error(cellLog.createMessage("Conversion according to target property failed, using value as is.", e));
            }
        } else {
        // TODO any conversion necessary/possible
        }
    } else {
        // unwrap value
        if (value instanceof Value) {
            value = ((Value) value).getValue();
        }
    }
    /*
		 * If the value is no group, but it should be one, create an instance
		 * wrapping the value
		 */
    TypeDefinition propertyType = toPropertyEntityDefinition(node.getEntityDefinition()).getDefinition().getPropertyType();
    if (!(value instanceof Group) && !propertyType.getChildren().isEmpty()) {
        MutableInstance instance = new DefaultInstance(propertyType, null);
        instance.setValue(value);
        value = instance;
    }
    return value;
}

Example 3 with MultiValue

use of eu.esdihumboldt.cst.MultiValue in project hale by halestudio.

the class InstanceBuilder method getValue.

/**
 * Get the value for a target node.
 *
 * @param node the target node
 * @param typeLog the type transformation log
 * @return the value or {@link NoObject#NONE} representing no value
 */
private Object getValue(TargetNode node, TransformationLog typeLog) {
    if (node.getChildren(true).isEmpty()) {
        // simple leaf
        if (node.isDefined()) {
            // XXX this is done in FunctionExecutor
            return node.getResult();
        } else {
            return NoObject.NONE;
        }
    }
    boolean isProperty = node.getDefinition().asProperty() != null;
    boolean isGroup = node.getDefinition().asGroup() != null;
    if (isProperty && node.isDefined()) {
        // it's a property and we have a value/values
        Object nodeValue = node.getResult();
        if (!(nodeValue instanceof MultiValue)) {
            // pack single value into multivalue
            MultiValue nodeMultiValue = new MultiValue();
            nodeMultiValue.add(nodeValue);
            nodeValue = nodeMultiValue;
        }
        MultiValue nodeMultiValue = (MultiValue) nodeValue;
        if (!nodeMultiValue.isEmpty()) {
            // Create n instances
            MultiValue resultMultiValue = new MultiValue(nodeMultiValue.size());
            for (Object value : nodeMultiValue) {
                // the value may have been wrapped in an Instance
                if (value instanceof Instance) {
                    value = ((Instance) value).getValue();
                }
                MutableInstance instance = new DefaultInstance(node.getDefinition().asProperty().getPropertyType(), null);
                instance.setValue(value);
                // XXX since this is the same for all instances maybe do
                // this on a dummy and only copy properties for each?
                // XXX MultiValue w/ target node children => strange results
                populateGroup(instance, node, typeLog);
                resultMultiValue.add(instance);
            }
            return resultMultiValue;
        }
    // if nodeMultiValue is empty fall through to below
    // it the instance could still have children even without a value
    }
    // it's a property or group with no value
    MutableGroup group;
    if (isGroup) {
        group = new DefaultGroup(node.getDefinition().asGroup());
    } else if (isProperty) {
        group = new DefaultInstance(node.getDefinition().asProperty().getPropertyType(), null);
    } else {
        throw new IllegalStateException("Illegal child definition");
    }
    // populate with children
    if (populateGroup(group, node, typeLog)) {
        return group;
    } else {
        return NoObject.NONE;
    }
}

Example 4 with MultiValue

use of eu.esdihumboldt.cst.MultiValue in project hale by halestudio.

the class AssignFromCollector method evaluate.

/**
 * @see eu.esdihumboldt.hale.common.align.transformation.function.impl.AbstractSingleTargetPropertyTransformation#evaluate(java.lang.String,
 *      eu.esdihumboldt.hale.common.align.transformation.engine.TransformationEngine,
 *      com.google.common.collect.ListMultimap, java.lang.String,
 *      eu.esdihumboldt.hale.common.align.model.impl.PropertyEntityDefinition,
 *      java.util.Map,
 *      eu.esdihumboldt.hale.common.align.transformation.report.TransformationLog)
 */
@Override
protected Object evaluate(String transformationIdentifier, TransformationEngine engine, ListMultimap<String, PropertyValue> variables, String resultName, PropertyEntityDefinition resultProperty, Map<String, String> executionParameters, TransformationLog log) throws TransformationException, NoResultException {
    // XXX check anchor?
    final Collector mainCollector = (Collector) getExecutionContext().getTransformationContext().get(ContextHelpers.KEY_COLLECTOR);
    if (mainCollector == null) {
        throw new TransformationException("Fatal: No collector has been created yet. Check function priority.");
    }
    final ParameterValue collectorName = getParameterChecked(PARAMETER_COLLECTOR);
    if (collectorName == null || collectorName.isEmpty()) {
        throw new TransformationException("Fatal: No collector name was specified.");
    }
    final Collector collector = mainCollector.getAt(collectorName.getValue().toString());
    if (collector == null) {
        throw new TransformationException(MessageFormat.format("Error retrieving collector \"{0}\"", collectorName.getValue().toString()));
    } else if (collector.values().isEmpty()) {
        log.warn(new TransformationMessageImpl(getCell(), MessageFormat.format("Collector \"{0}\" contains no values. If this is unexpected, check the spelling of the collector name and the priority of the transformation function.", collectorName.getStringRepresentation()), null));
    }
    // Determine where to assign the collected values
    final TypeDefinition resultPropertyType = resultProperty.getDefinition().getPropertyType();
    final PropertyDefinition targetProperty;
    final ResultStrategy resultStrategy;
    if (resultPropertyType.getConstraint(HasValueFlag.class).isEnabled()) {
        // The result property can take values, therefore assign directly to
        // property
        targetProperty = resultProperty.getDefinition();
        // No instance creation is required in this case
        resultStrategy = ResultStrategy.USE_VALUE;
    } else {
        // Find child element/attribute that can be assigned the reference
        targetProperty = Optional.ofNullable(findReferenceChildProperty(resultPropertyType)).orElseThrow(() -> new TransformationException("Fatal: No child property could be found to assign a reference to."));
        resultStrategy = ResultStrategy.BUILD_INSTANCE;
    }
    List<Object> collectedReferences = helper.extractCollectedValues(collector);
    // Process collected values if target property is a reference, otherwise
    // use plain values
    final Function<Object, Object> referenceStrategy;
    if (targetProperty.getConstraint(Reference.class).isReference()) {
        final Reference referenceConstraint = targetProperty.getConstraint(Reference.class);
        // Use the idToReference method to construct the reference
        referenceStrategy = referenceConstraint::idToReference;
    } else {
        referenceStrategy = Function.identity();
    }
    MultiValue result = new MultiValue();
    collectedReferences.forEach(ref -> result.add(resultStrategy.createResult(resultPropertyType, targetProperty, referenceStrategy.apply(ref))));
    return result;
}

Example 5 with MultiValue

use of eu.esdihumboldt.cst.MultiValue in project hale by halestudio.

the class TargetCollector method toMultiValue.

/**
 * Transforms the closures added to this collector to a {@link MultiValue}
 * using the supplied builder.
 *
 * @param builder the instance builder for creating target instances
 * @param type the type of the instance to create
 * @param log the log
 * @return a result value for all closures added to this collector
 * @throws TransformationException if some of the collected targets do not
 *             match the specified type
 */
public MultiValue toMultiValue(InstanceBuilder builder, TypeDefinition type, SimpleLog log) throws TransformationException {
    MultiValue result = new MultiValue(size());
    // a) closures not allowed if the target is no instance
    if (containsClosures && type.getChildren().isEmpty()) {
        throw new TransformationException("An instance is not applicable for the target.");
    }
    // b) values not allowed if the target may not have a value
    if (containsValues && !type.getConstraint(HasValueFlag.class).isEnabled() && !type.getConstraint(AugmentedValueFlag.class).isEnabled()) {
        // this may be desired, e.g. when producing geometries for GML
        if (containsGeometries) {
            // only warning message for geometries
            log.warn("Value provided for target that does not allow a value according to the schema, contains geometries");
        } else {
            // instead of a hard error, we just log an error
            log.error("Value provided for target that does not allow a value according to the schema");
        }
    }
    for (TargetData data : targetData) {
        Object value;
        if (data.instance != null) {
            Instance instance = data.instance;
            // value as instance value
            if (data.value != null && instance instanceof MutableInstance) {
                ((MutableInstance) instance).setValue(data.value);
            }
            value = instance;
        } else {
            value = data.value;
        }
        result.add(value);
    }
    return result;
}