private Comparison stringComparisonConstraint(
DynamicOperand operand,
String valueOperandShouldBe,
QueryObjectModelFactory qomFactory,
ValueFactory valueFactory)
throws RepositoryException {
return qomFactory.comparison(
operand,
QueryObjectModelFactory.JCR_OPERATOR_EQUAL_TO,
qomFactory.literal(valueFactory.createValue(valueOperandShouldBe, PropertyType.STRING)));
}
@GET
@Path("/{type}")
@Produces({Utils.MEDIA_TYPE_APPLICATION_HAL_PLUS_JSON, MediaType.APPLICATION_JSON})
public Object getByType(
@PathParam("workspace") String workspace,
@PathParam("language") String language,
@PathParam("type") String type,
@QueryParam("nameContains") List<String> nameConstraints,
@QueryParam("orderBy") String orderBy,
@QueryParam("limit") int limit,
@QueryParam("offset") int offset,
@QueryParam("depth") int depth,
@Context UriInfo context) {
if (API.isQueryDisabled()) {
APIExceptionMapper.LOGGER.debug("Types endpoint is disabled. Attempted query on " + type);
return Response.status(Response.Status.NOT_FOUND).build();
}
final String unescapedNodetype = Names.unescape(type);
if (API.excludedNodeTypes.contains(unescapedNodetype)) {
return Response.status(Response.Status.FORBIDDEN)
.entity("'" + unescapedNodetype + "' is not available for querying.")
.build();
}
Session session = null;
try {
session = getSession(workspace, language);
final QueryObjectModelFactory qomFactory =
session.getWorkspace().getQueryManager().getQOMFactory();
final ValueFactory valueFactory = session.getValueFactory();
final Selector selector = qomFactory.selector(unescapedNodetype, SELECTOR_NAME);
// language constraint: either jcr:language doesn't exist or jcr:language is current language
Constraint constraint =
qomFactory.or(
qomFactory.not(qomFactory.propertyExistence(SELECTOR_NAME, Constants.JCR_LANGUAGE)),
stringComparisonConstraint(
qomFactory.propertyValue(SELECTOR_NAME, Constants.JCR_LANGUAGE),
language,
qomFactory,
valueFactory));
// if we have passed "nameContains" query parameters, only return nodes which name contains
// the specified terms
if (nameConstraints != null && !nameConstraints.isEmpty()) {
for (String name : nameConstraints) {
final Comparison likeConstraint =
qomFactory.comparison(
qomFactory.nodeLocalName(SELECTOR_NAME),
QueryObjectModelFactory.JCR_OPERATOR_LIKE,
qomFactory.literal(
valueFactory.createValue("%" + name + "%", PropertyType.STRING)));
constraint = qomFactory.and(constraint, likeConstraint);
}
}
Ordering[] orderings = null;
// ordering deactivated because it currently doesn't work, probably due to a bug in
// QueryServiceImpl
if (Utils.exists(orderBy)) {
if ("desc".equalsIgnoreCase(orderBy)) {
orderings =
new Ordering[] {qomFactory.descending(qomFactory.nodeLocalName(SELECTOR_NAME))};
} else {
orderings =
new Ordering[] {qomFactory.ascending(qomFactory.nodeLocalName(SELECTOR_NAME))};
}
}
final QueryObjectModel query =
qomFactory.createQuery(
selector,
constraint,
orderings,
new Column[] {qomFactory.column(SELECTOR_NAME, null, null)});
if (limit > 0) {
query.setLimit(limit);
}
query.setOffset(offset);
final QueryResult queryResult = query.execute();
final NodeIterator nodes = queryResult.getNodes();
final List<JSONNode> result = new LinkedList<JSONNode>();
final Filter filter = Utils.getFilter(context);
while (nodes.hasNext()) {
final Node resultNode = nodes.nextNode();
if (filter.acceptChild(resultNode)) {
JSONNode node = getFactory().createNode(resultNode, filter, depth);
result.add(node);
}
}
return Response.ok(result).build();
} catch (Exception e) {
throw new APIException(e);
} finally {
closeSession(session);
}
}