public Element execute(Element request, ServiceContext context) throws CatalogException {
checkService(request);
checkVersion(request);
Element response = new Element(getName() + "Response", Csw.NAMESPACE_CSW);
String[] propertyNames = getParameters(request, "PropertyName");
String[] parameterNames = getParameters(request, "ParameterName");
String cswServiceSpecificConstraint = request.getChildText(Geonet.Elem.FILTER);
// PropertyName handled first.
if (propertyNames != null) {
List<Element> domainValues;
try {
domainValues =
handlePropertyName(
propertyNames,
context,
false,
CatalogConfiguration.getMaxNumberOfRecordsForPropertyNames(),
cswServiceSpecificConstraint,
_luceneConfig);
} catch (Exception e) {
Log.error(Geonet.CSW, "Error getting domain value for specified PropertyName : " + e);
throw new NoApplicableCodeEx(
"Raised exception while getting domain value for specified PropertyName : " + e);
}
response.addContent(domainValues);
return response;
}
if (parameterNames != null) {
List<Element> domainValues = handleParameterName(parameterNames);
response.addContent(domainValues);
}
return response;
}
public static List<Element> handlePropertyName(
String[] propertyNames,
ServiceContext context,
boolean freq,
int maxRecords,
String cswServiceSpecificConstraint,
LuceneConfig luceneConfig)
throws Exception {
List<Element> domainValuesList = null;
if (Log.isDebugEnabled(Geonet.CSW))
Log.debug(
Geonet.CSW,
"Handling property names '"
+ Arrays.toString(propertyNames)
+ "' with max records of "
+ maxRecords);
for (int i = 0; i < propertyNames.length; i++) {
if (i == 0) domainValuesList = new ArrayList<Element>();
// Initialize list of values element.
Element listOfValues = null;
// Generate DomainValues element
Element domainValues = new Element("DomainValues", Csw.NAMESPACE_CSW);
// FIXME what should be the type ???
domainValues.setAttribute("type", "csw:Record");
String property = propertyNames[i].trim();
// Set propertyName in any case.
Element pn = new Element("PropertyName", Csw.NAMESPACE_CSW);
domainValues.addContent(pn.setText(property));
GeonetContext gc = (GeonetContext) context.getHandlerContext(Geonet.CONTEXT_NAME);
SearchManager sm = gc.getSearchmanager();
IndexAndTaxonomy indexAndTaxonomy = sm.getNewIndexReader(null);
try {
GeonetworkMultiReader reader = indexAndTaxonomy.indexReader;
BooleanQuery groupsQuery = (BooleanQuery) CatalogSearcher.getGroupsQuery(context);
BooleanQuery query = null;
// Apply CSW service specific constraint
if (StringUtils.isNotEmpty(cswServiceSpecificConstraint)) {
Query constraintQuery =
CatalogSearcher.getCswServiceSpecificConstraintQuery(
cswServiceSpecificConstraint, luceneConfig);
query = new BooleanQuery();
BooleanClause.Occur occur = LuceneUtils.convertRequiredAndProhibitedToOccur(true, false);
query.add(groupsQuery, occur);
query.add(constraintQuery, occur);
} else {
query = groupsQuery;
}
List<Pair<String, Boolean>> sortFields =
Collections.singletonList(Pair.read(Geonet.SearchResult.SortBy.RELEVANCE, true));
Sort sort = LuceneSearcher.makeSort(sortFields, context.getLanguage(), false);
CachingWrapperFilter filter = null;
Pair<TopDocs, Element> searchResults =
LuceneSearcher.doSearchAndMakeSummary(
maxRecords,
0,
maxRecords,
context.getLanguage(),
null,
reader,
query,
filter,
sort,
null,
false,
false,
false,
false // Scoring is useless for GetDomain operation
);
TopDocs hits = searchResults.one();
try {
// Get mapped lucene field in CSW configuration
String indexField = CatalogConfiguration.getFieldMapping().get(property.toLowerCase());
if (indexField != null) property = indexField;
// check if params asked is in the index using getFieldNames ?
FieldInfos fi = new SlowCompositeReaderWrapper(reader).getFieldInfos();
if (fi.fieldInfo(property) == null) continue;
boolean isRange = false;
if (CatalogConfiguration.getGetRecordsRangeFields().contains(property)) isRange = true;
if (isRange) listOfValues = new Element("RangeOfValues", Csw.NAMESPACE_CSW);
else listOfValues = new Element("ListOfValues", Csw.NAMESPACE_CSW);
Set<String> fields = new HashSet<String>();
fields.add(property);
fields.add("_isTemplate");
// parse each document in the index
String[] fieldValues;
SortedSet<String> sortedValues = new TreeSet<String>();
HashMap<String, Integer> duplicateValues = new HashMap<String, Integer>();
for (int j = 0; j < hits.scoreDocs.length; j++) {
DocumentStoredFieldVisitor selector = new DocumentStoredFieldVisitor(fields);
reader.document(hits.scoreDocs[j].doc, selector);
Document doc = selector.getDocument();
// Skip templates and subTemplates
String[] isTemplate = doc.getValues("_isTemplate");
if (isTemplate[0] != null && !isTemplate[0].equals("n")) continue;
// Get doc values for specified property
fieldValues = doc.getValues(property);
if (fieldValues == null) continue;
addtoSortedSet(sortedValues, fieldValues, duplicateValues);
}
SummaryComparator valuesComparator =
new SummaryComparator(SortOption.FREQUENCY, Type.STRING, context.getLanguage(), null);
TreeSet<Map.Entry<String, Integer>> sortedValuesFrequency =
new TreeSet<Map.Entry<String, Integer>>(valuesComparator);
sortedValuesFrequency.addAll(duplicateValues.entrySet());
if (freq) return createValuesByFrequency(sortedValuesFrequency);
else listOfValues.addContent(createValuesElement(sortedValues, isRange));
} finally {
// any children means that the catalog was unable to determine
// anything about the specified parameter
if (listOfValues != null && listOfValues.getChildren().size() != 0)
domainValues.addContent(listOfValues);
// Add current DomainValues to the list
domainValuesList.add(domainValues);
}
} finally {
sm.releaseIndexReader(indexAndTaxonomy);
}
}
return domainValuesList;
}
