Examples with FieldMapping org.activityinfo.geoadmin.merge2.view.mapping.FieldMapping used on opensource projects

Example 1 with FieldMapping

use of org.activityinfo.geoadmin.merge2.view.mapping.FieldMapping in project activityinfo by bedatadriven.

the class ImportView method runUpdate.

/**
 * Based on the users explict choices and the automatic matching / mapping,
 * build a transaction to effect the import.
 * @param client
 */
public void runUpdate(GeoAdminClient client) {
    RecordTransactionBuilder tx = new RecordTransactionBuilder();
    ResourceId targetFormId = model.getTargetFormId().get();
    KeyGenerator generator = new KeyGenerator();
    Map<ResourceId, ResourceId> idMap = new HashMap<>();
    MatchTable matchTable = getMatchTable();
    int numRows = matchTable.getRowCount();
    for (int i = 0; i < numRows; i++) {
        MatchRow matchRow = matchTable.get(i);
        if (!matchRow.isMatched(MatchSide.SOURCE)) {
            // no corresponding row in the source:
            // delete unmatched target
            tx.delete(targetFormId, matchRow.getTargetId().get());
        } else {
            RecordUpdate update;
            ResourceId targetId;
            if (matchRow.isMatched(MatchSide.TARGET)) {
                // update target with properties from the source
                targetId = matchRow.getTargetId().get();
                update = tx.update(targetFormId, targetId);
            } else {
                // create a new instance with properties from the source
                targetId = CuidAdapter.entity(generator.generateInt());
                update = tx.create(targetFormId, targetId);
            }
            idMap.put(matchRow.getSourceId().get(), targetId);
            // apply properties from field mapping
            for (FieldMapping fieldMapping : mapping.get().getFieldMappings()) {
                update.setFieldValue(fieldMapping.getTargetFieldId(), fieldMapping.mapFieldValue(matchRow.getSourceRow()));
            }
        }
    }
    client.executeTransaction(tx);
    try {
        updateGeometry(client, idMap);
    } catch (IOException e) {
        throw new RuntimeException("Exception updating geometry");
    }
}

Example 2 with FieldMapping

use of org.activityinfo.geoadmin.merge2.view.mapping.FieldMapping in project activityinfo by bedatadriven.

the class FormMappingBuilder method build.

public Observable<List<FieldMapping>> build() {
    // the source to the target field
    for (FieldProfile targetField : target.getFields()) {
        if (targetField.getNode().isRoot())
            if (SimpleFieldMapping.isSimple(targetField)) {
                buildSimpleMapping(targetField);
            }
    }
    // Add mappings for ReferenceFields, for which we have to perform look ups
    for (FormTree.Node targetNode : target.getFormTree().getRootFields()) {
        if (targetNode.isReference()) {
            buildReferenceMapping(targetNode.getField());
        }
    }
    // Add mapping for geography, IIF source and target have exactly one GeoArea
    Set<FormField> targetGeoFields = findGeoFields(target.getFormTree());
    Set<FormField> sourceGeoFields = findGeoFields(source.getFormTree());
    if (targetGeoFields.size() == 1 && sourceGeoFields.size() == 1) {
        FormField sourceField = Iterables.getOnlyElement(sourceGeoFields);
        FormField targetField = Iterables.getOnlyElement(targetGeoFields);
        mappings.add(Observable.<FieldMapping>just(new GeoAreaFieldMapping(source.getField(sourceField.getId()), targetField)));
    }
    return Observable.flatten(SynchronousScheduler.INSTANCE, mappings);
}

Example 3 with FieldMapping

use of org.activityinfo.geoadmin.merge2.view.mapping.FieldMapping in project activityinfo by bedatadriven.

the class FormMappingBuilder method buildReferenceMapping.

/**
 * Builds a reference mapping for a given target node.
 *
 * <p>A reference field takes the value of a single {@code ResourceId}, but
 * most of the time we don't have the actual id of the field in the dataset to import:
 * we have to obtain the id by performing a look up against text fields in the
 * </p>
 *
 * @param targetField the reference field to look up
 */
private void buildReferenceMapping(final FormField targetField) {
    // In order to match against the ReferenceField, we need the actual data
    // from the form that is being referenced.
    // 
    // Example: If we have a "Location" field that references the "Province" form class,
    // then we need then names and/or codes of the Province form class in order to lookup the
    // ids, assuming that our source dataset has a "province name" column with the names of the provinces.
    ReferenceType type = (ReferenceType) targetField.getType();
    // Currently this only supports reference fields that reference exactly one form class.
    if (type.getCardinality() == Cardinality.SINGLE && type.getRange().size() == 1) {
        ResourceId referenceFormId = Iterables.getOnlyElement(type.getRange());
        Observable<FormProfile> lookupForm = FormProfile.profile(resourceStore, referenceFormId);
        Observable<FieldMapping> mapping = lookupForm.transform(new Function<FormProfile, FieldMapping>() {

            @Override
            public FieldMapping apply(FormProfile lookupForm) {
                return new ReferenceFieldMapping(targetField, KeyFieldPairSet.matchKeys(source, lookupForm), referenceMatches);
            }
        });
        mappings.add(mapping);
    }
}