Examples with WFSException org.geotools.data.wfs.protocol.wfs.WFSException used on opensource projects

Example 1 with WFSException

use of org.geotools.data.wfs.protocol.wfs.WFSException in project coastal-hazards by USGS-CIDA.

the class WFSGetDomain method getDomainValuesAsStrings.

public Set<String> getDomainValuesAsStrings(WFSService service, String attribute) throws IOException {
    Set<String> domain = new HashSet<>();
    URL getCapsUrl = WFSDataStoreFactory.createGetCapabilitiesRequest(new URL(service.getEndpoint()), Version.v1_1_0);
    log.debug("Getting domains from wfs at " + getCapsUrl);
    Map params = new HashMap<>();
    params.put(WFSDataStoreFactory.URL.key, getCapsUrl);
    params.put(WFSDataStoreFactory.TIMEOUT.key, TIMEOUT_MILLISECONDS);
    WFSDataStore wfs = datastore.createDataStore(params);
    if (wfs == null) {
        log.debug("Could not set up WFS datastore");
        throw new WFSException("Could not set up WFS datastore");
    }
    try {
        Query query = new Query(service.getTypeName(), Filter.INCLUDE, new String[] { attribute });
        SimpleFeatureSource featureSource = wfs.getFeatureSource(service.getTypeName());
        SimpleFeatureCollection features = featureSource.getFeatures(query);
        SimpleFeatureIterator iterator = features.features();
        while (iterator.hasNext()) {
            SimpleFeature next = iterator.next();
            Object attr = next.getAttribute(attribute);
            if (attr instanceof String) {
                String attrVal = (String) attr;
                domain.add(attrVal);
            } else {
                throw new UnsupportedOperationException("Currently only string attributes are allowed");
            }
        }
    } finally {
        wfs.dispose();
    }
    return domain;
}