Examples with CountObjectsCapabilityType com.evolveum.midpoint.xml.ns._public.resource.capabilities_3.CountObjectsCapabilityType used on opensource projects

Example 1 with CountObjectsCapabilityType

use of com.evolveum.midpoint.xml.ns._public.resource.capabilities_3.CountObjectsCapabilityType in project midpoint by Evolveum.

the class ShadowCache method countObjects.

public Integer countObjects(ObjectQuery query, Task task, final OperationResult result) throws SchemaException, ObjectNotFoundException, CommunicationException, ConfigurationException, SecurityViolationException, ExpressionEvaluationException {
    ResourceShadowDiscriminator coordinates = ObjectQueryUtil.getCoordinates(query.getFilter());
    final ProvisioningContext ctx = ctxFactory.create(coordinates, null, result);
    ctx.assertDefinition();
    applyDefinition(ctx, query);
    RefinedObjectClassDefinition objectClassDef = ctx.getObjectClassDefinition();
    ResourceType resourceType = ctx.getResource();
    CountObjectsCapabilityType countObjectsCapabilityType = objectClassDef.getEffectiveCapability(CountObjectsCapabilityType.class);
    if (countObjectsCapabilityType == null) {
        // Unable to count. Return null which means "I do not know"
        result.recordNotApplicableIfUnknown();
        return null;
    } else {
        CountObjectsSimulateType simulate = countObjectsCapabilityType.getSimulate();
        if (simulate == null) {
            // We have native capability
            ConnectorInstance connector = ctx.getConnector(ReadCapabilityType.class, result);
            try {
                ObjectQuery attributeQuery = createAttributeQuery(query);
                int count;
                try {
                    count = connector.count(objectClassDef.getObjectClassDefinition(), attributeQuery, objectClassDef.getPagedSearches(), ctx, result);
                } catch (CommunicationException | GenericFrameworkException | SchemaException | UnsupportedOperationException e) {
                    result.recordFatalError(e);
                    throw e;
                }
                result.computeStatus();
                result.cleanupResult();
                return count;
            } catch (GenericFrameworkException | UnsupportedOperationException e) {
                SystemException ex = new SystemException("Couldn't count objects on resource " + resourceType + ": " + e.getMessage(), e);
                result.recordFatalError(ex);
                throw ex;
            }
        } else if (simulate == CountObjectsSimulateType.PAGED_SEARCH_ESTIMATE) {
            if (!objectClassDef.isPagedSearchEnabled()) {
                throw new ConfigurationException("Configured count object capability to be simulated using a paged search but paged search capability is not present");
            }
            final Holder<Integer> countHolder = new Holder<Integer>(0);
            final ShadowHandler<ShadowType> handler = new ShadowHandler<ShadowType>() {

                @Override
                public boolean handle(ShadowType object) {
                    int count = countHolder.getValue();
                    count++;
                    countHolder.setValue(count);
                    return true;
                }
            };
            query = query.clone();
            ObjectPaging paging = ObjectPaging.createEmptyPaging();
            paging.setMaxSize(1);
            query.setPaging(paging);
            Collection<SelectorOptions<GetOperationOptions>> options = SelectorOptions.createCollection(new ItemPath(ShadowType.F_ASSOCIATION), GetOperationOptions.createRetrieve(RetrieveOption.EXCLUDE));
            SearchResultMetadata resultMetadata;
            try {
                resultMetadata = searchObjectsIterative(query, options, handler, false, task, result);
            } catch (SchemaException | ObjectNotFoundException | ConfigurationException | SecurityViolationException e) {
                result.recordFatalError(e);
                throw e;
            }
            result.computeStatus();
            result.cleanupResult();
            return resultMetadata.getApproxNumberOfAllResults();
        } else if (simulate == CountObjectsSimulateType.SEQUENTIAL_SEARCH) {
            // traditional way of counting objects (i.e. counting them one
            // by one)
            final Holder<Integer> countHolder = new Holder<Integer>(0);
            final ShadowHandler<ShadowType> handler = new ShadowHandler<ShadowType>() {

                @Override
                public boolean handle(ShadowType object) {
                    int count = countHolder.getValue();
                    count++;
                    countHolder.setValue(count);
                    return true;
                }
            };
            Collection<SelectorOptions<GetOperationOptions>> options = SelectorOptions.createCollection(new ItemPath(ShadowType.F_ASSOCIATION), GetOperationOptions.createRetrieve(RetrieveOption.EXCLUDE));
            searchObjectsIterative(query, options, handler, false, task, result);
            // TODO: better error handling
            result.computeStatus();
            result.cleanupResult();
            return countHolder.getValue();
        } else {
            throw new IllegalArgumentException("Unknown count capability simulate type " + simulate);
        }
    }
}