Subscription strategy tag (#1178)

tests pass

hapi-fhir-base/src/main/java/ca/uhn/fhir/util/UrlUtil.java

@@ -1,6 +1,9 @@
 package ca.uhn.fhir.util;
 
+import ca.uhn.fhir.context.FhirContext;
+import ca.uhn.fhir.context.RuntimeResourceDefinition;
 import ca.uhn.fhir.model.primitive.IdDt;
+import ca.uhn.fhir.parser.DataFormatException;
 import ca.uhn.fhir.rest.api.Constants;
 import ca.uhn.fhir.rest.server.exceptions.InvalidRequestException;
 import com.google.common.escape.Escaper;
@@ -172,8 +175,13 @@ public class UrlUtil {
 		return true;
 	}
 
-	public static void main(String[] args) {
+	public static RuntimeResourceDefinition parseUrlResourceType(FhirContext theCtx, String theUrl) throws DataFormatException {
-		System.out.println(escapeUrlParam("http://snomed.info/sct?fhir_vs=isa/126851005"));
+		int paramIndex = theUrl.indexOf('?');
+		String resourceName = theUrl.substring(0, paramIndex);
+		if (resourceName.contains("/")) {
+			resourceName = resourceName.substring(resourceName.lastIndexOf('/') + 1);
+		}
+		return theCtx.getResourceDefinition(resourceName);
 	}
 
 	public static Map<String, String[]> parseQueryString(String theQueryString) {

hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/search/warm/CacheWarmingSvcImpl.java

@@ -26,9 +26,9 @@ import ca.uhn.fhir.context.RuntimeResourceDefinition;
 import ca.uhn.fhir.jpa.dao.DaoConfig;
 import ca.uhn.fhir.jpa.dao.DaoRegistry;
 import ca.uhn.fhir.jpa.dao.IFhirResourceDao;
-import ca.uhn.fhir.jpa.searchparam.SearchParameterMap;
 import ca.uhn.fhir.jpa.searchparam.MatchUrlService;
-import ca.uhn.fhir.parser.DataFormatException;
+import ca.uhn.fhir.jpa.searchparam.SearchParameterMap;
+import ca.uhn.fhir.util.UrlUtil;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Component;
@@ -77,7 +77,7 @@ public class CacheWarmingSvcImpl implements ICacheWarmingSvc {
 	private void refreshNow(WarmCacheEntry theCacheEntry) {
 		String nextUrl = theCacheEntry.getUrl();
 
-		RuntimeResourceDefinition resourceDef = parseUrlResourceType(myCtx, nextUrl);
+		RuntimeResourceDefinition resourceDef = UrlUtil.parseUrlResourceType(myCtx, nextUrl);
 		IFhirResourceDao<?> callingDao = myDaoRegistry.getResourceDao(resourceDef.getName());
 		String queryPart = parseWarmUrlParamPart(nextUrl);
 		SearchParameterMap responseCriteriaUrl = myMatchUrlService.translateMatchUrl(queryPart, resourceDef);
@@ -93,20 +93,6 @@ public class CacheWarmingSvcImpl implements ICacheWarmingSvc {
 		return theNextUrl.substring(paramIndex);
 	}
 
-	/**
-	 * TODO: this method probably belongs in a utility class, not here
-	 *
-	 * @throws DataFormatException If the resource type is not known
-	 */
-	public static RuntimeResourceDefinition parseUrlResourceType(FhirContext theCtx, String theUrl) throws DataFormatException {
-		int paramIndex = theUrl.indexOf('?');
-		String resourceName = theUrl.substring(0, paramIndex);
-		if (resourceName.contains("/")) {
-			resourceName = resourceName.substring(resourceName.lastIndexOf('/') + 1);
-		}
-		return theCtx.getResourceDefinition(resourceName);
-	}
-
 	@PostConstruct
 	public void start() {
 		initCacheMap();
@@ -120,7 +106,7 @@ public class CacheWarmingSvcImpl implements ICacheWarmingSvc {
 
 			// Validate
 			parseWarmUrlParamPart(next.getUrl());
-			parseUrlResourceType(myCtx, next.getUrl());
+			UrlUtil.parseUrlResourceType(myCtx, next.getUrl());
 
 			myCacheEntryToNextRefresh.put(next, 0L);
 		}

hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/subscription/SubscriptionActivatingInterceptor.java

@@ -29,17 +29,17 @@ import ca.uhn.fhir.jpa.dao.IFhirResourceDao;
 import ca.uhn.fhir.jpa.model.interceptor.api.Hook;
 import ca.uhn.fhir.jpa.model.interceptor.api.Interceptor;
 import ca.uhn.fhir.jpa.model.interceptor.api.Pointcut;
-import ca.uhn.fhir.jpa.search.warm.CacheWarmingSvcImpl;
 import ca.uhn.fhir.jpa.searchparam.MatchUrlService;
-import ca.uhn.fhir.jpa.subscription.module.CanonicalSubscription;
 import ca.uhn.fhir.jpa.subscription.module.ResourceModifiedMessage;
 import ca.uhn.fhir.jpa.subscription.module.cache.SubscriptionCanonicalizer;
 import ca.uhn.fhir.jpa.subscription.module.cache.SubscriptionRegistry;
+import ca.uhn.fhir.jpa.subscription.module.matcher.SubscriptionMatchingStrategy;
+import ca.uhn.fhir.jpa.subscription.module.matcher.SubscriptionStrategyEvaluator;
 import ca.uhn.fhir.model.dstu2.valueset.ResourceTypeEnum;
-import ca.uhn.fhir.rest.api.server.RequestDetails;
+import ca.uhn.fhir.parser.DataFormatException;
+import ca.uhn.fhir.rest.server.exceptions.InternalErrorException;
 import ca.uhn.fhir.rest.server.exceptions.InvalidRequestException;
 import ca.uhn.fhir.rest.server.exceptions.UnprocessableEntityException;
-import ca.uhn.fhir.rest.server.interceptor.ServerOperationInterceptorAdapter;
 import ca.uhn.fhir.util.SubscriptionUtil;
 import com.google.common.annotations.VisibleForTesting;
 import org.hl7.fhir.instance.model.Subscription;
@@ -96,6 +96,8 @@ public class SubscriptionActivatingInterceptor {
 	private MatchUrlService myMatchUrlService;
 	@Autowired
 	private DaoConfig myDaoConfig;
+	@Autowired
+	private SubscriptionStrategyEvaluator mySubscriptionStrategyEvaluator;
 
 	public boolean activateOrRegisterSubscriptionIfRequired(final IBaseResource theSubscription) {
 		// Grab the value for "Subscription.channel.type" so we can see if this
@@ -160,7 +162,6 @@ public class SubscriptionActivatingInterceptor {
 		}
 	}
 
-
 	private boolean activateSubscription(String theActiveStatus, final IBaseResource theSubscription, String theRequestedStatus) {
 		IFhirResourceDao subscriptionDao = myDaoRegistry.getSubscriptionDao();
 		IBaseResource subscription = subscriptionDao.read(theSubscription.getIdElement());
@@ -185,6 +186,36 @@ public class SubscriptionActivatingInterceptor {
 		submitResourceModified(theNewResource, ResourceModifiedMessage.OperationTypeEnum.UPDATE);
 	}
 
+	@Hook(Pointcut.OP_PRESTORAGE_RESOURCE_CREATED)
+	public void addStrategyTagCreated(IBaseResource theResource) {
+		if (isSubscription(theResource)) {
+			validateCriteriaAndAddStrategy(theResource);
+		}
+	}
+
+	@Hook(Pointcut.OP_PRESTORAGE_RESOURCE_UPDATED)
+	public void addStrategyTagUpdated(IBaseResource theOldResource, IBaseResource theNewResource) {
+		if (isSubscription(theNewResource)) {
+			validateCriteriaAndAddStrategy(theNewResource);
+		}
+	}
+
+	// TODO KHS add third type of strategy DISABLED if that subscription type is disabled on this server
+	public void validateCriteriaAndAddStrategy(final IBaseResource theResource) {
+		String criteria = mySubscriptionCanonicalizer.getCriteria(theResource);
+		try {
+			SubscriptionMatchingStrategy strategy = mySubscriptionStrategyEvaluator.determineStrategy(criteria);
+			mySubscriptionCanonicalizer.setMatchingStrategyTag(myFhirContext, theResource, strategy);
+		} catch (InvalidRequestException | DataFormatException e) {
+			throw new UnprocessableEntityException("Invalid subscription criteria submitted: " + criteria + " " + e.getMessage());
+		}
+	}
+
+	@Hook(Pointcut.OP_PRECOMMIT_RESOURCE_UPDATED)
+	public void resourceUpdated(IBaseResource theOldResource, IBaseResource theNewResource) {
+		submitResourceModified(theNewResource, ResourceModifiedMessage.OperationTypeEnum.UPDATE);
+	}
+
 	@Hook(Pointcut.OP_PRECOMMIT_RESOURCE_CREATED)
 	public void resourceCreated(IBaseResource theResource) {
 		submitResourceModified(theResource, ResourceModifiedMessage.OperationTypeEnum.CREATE);
@@ -195,46 +226,31 @@ public class SubscriptionActivatingInterceptor {
 		submitResourceModified(theResource, ResourceModifiedMessage.OperationTypeEnum.DELETE);
 	}
 
-	@Hook(Pointcut.OP_PRECOMMIT_RESOURCE_UPDATED)
+	private void submitResourceModified(IBaseResource theNewResource, ResourceModifiedMessage.OperationTypeEnum theOperationType) {
-	public void resourceUpdated(IBaseResource theOldResource, IBaseResource theNewResource) {
+		if (isSubscription(theNewResource)) {
-		submitResourceModified(theNewResource, ResourceModifiedMessage.OperationTypeEnum.UPDATE);
+			submitResourceModified(new ResourceModifiedMessage(myFhirContext, theNewResource, theOperationType));
+		}
 	}
 
-	private void submitResourceModified(IBaseResource theNewResource, ResourceModifiedMessage.OperationTypeEnum theOperationType) {
+	private boolean isSubscription(IBaseResource theNewResource) {
-		submitResourceModified(new ResourceModifiedMessage(myFhirContext, theNewResource, theOperationType));
+		RuntimeResourceDefinition resourceDefinition = myFhirContext.getResourceDefinition(theNewResource);
+		return ResourceTypeEnum.SUBSCRIPTION.getCode().equals(resourceDefinition.getName());
 	}
 
 	private void submitResourceModified(final ResourceModifiedMessage theMsg) {
-		IIdType id = theMsg.getId(myFhirContext);
-		if (!id.getResourceType().equals(ResourceTypeEnum.SUBSCRIPTION.getCode())) {
-			return;
-		}
 		switch (theMsg.getOperationType()) {
 			case DELETE:
-				mySubscriptionRegistry.unregisterSubscription(id);
+				mySubscriptionRegistry.unregisterSubscription(theMsg.getId(myFhirContext));
 				break;
 			case CREATE:
 			case UPDATE:
-				final IBaseResource subscription = theMsg.getNewPayload(myFhirContext);
+				activateAndRegisterSubscriptionIfRequiredInTransaction(theMsg.getNewPayload(myFhirContext));
-				validateCriteria(subscription);
-				activateAndRegisterSubscriptionIfRequiredInTransaction(subscription);
 				break;
 			default:
 				break;
 		}
 	}
 
-	public void validateCriteria(final IBaseResource theResource) {
-		CanonicalSubscription subscription = mySubscriptionCanonicalizer.canonicalize(theResource);
-		String criteria = subscription.getCriteriaString();
-		try {
-			RuntimeResourceDefinition resourceDef = CacheWarmingSvcImpl.parseUrlResourceType(myFhirContext, criteria);
-			myMatchUrlService.translateMatchUrl(criteria, resourceDef);
-		} catch (InvalidRequestException e) {
-			throw new UnprocessableEntityException("Invalid subscription criteria submitted: " + criteria + " " + e.getMessage());
-		}
-	}
-
 	private void activateAndRegisterSubscriptionIfRequiredInTransaction(IBaseResource theSubscription) {
 		TransactionTemplate txTemplate = new TransactionTemplate(myTransactionManager);
 		txTemplate.execute(new TransactionCallbackWithoutResult() {

hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/subscription/SubscriptionTriggeringSvcImpl.java

@@ -27,7 +27,6 @@ import ca.uhn.fhir.jpa.dao.DaoRegistry;
 import ca.uhn.fhir.jpa.dao.IFhirResourceDao;
 import ca.uhn.fhir.jpa.provider.SubscriptionTriggeringProvider;
 import ca.uhn.fhir.jpa.search.ISearchCoordinatorSvc;
-import ca.uhn.fhir.jpa.search.warm.CacheWarmingSvcImpl;
 import ca.uhn.fhir.jpa.searchparam.MatchUrlService;
 import ca.uhn.fhir.jpa.searchparam.SearchParameterMap;
 import ca.uhn.fhir.jpa.subscription.module.ResourceModifiedMessage;
@@ -42,6 +41,7 @@ import ca.uhn.fhir.rest.server.exceptions.InvalidRequestException;
 import ca.uhn.fhir.rest.server.exceptions.PreconditionFailedException;
 import ca.uhn.fhir.util.ParametersUtil;
 import ca.uhn.fhir.util.StopWatch;
+import ca.uhn.fhir.util.UrlUtil;
 import ca.uhn.fhir.util.ValidateUtil;
 import org.apache.commons.lang3.ObjectUtils;
 import org.apache.commons.lang3.Validate;
@@ -209,7 +209,7 @@ public class SubscriptionTriggeringSvcImpl implements ISubscriptionTriggeringSvc
 		// If we don't have an active search started, and one needs to be.. start it
 		if (isBlank(theJobDetails.getCurrentSearchUuid()) && theJobDetails.getRemainingSearchUrls().size() > 0 && totalSubmitted < myMaxSubmitPerPass) {
 			String nextSearchUrl = theJobDetails.getRemainingSearchUrls().remove(0);
-			RuntimeResourceDefinition resourceDef = CacheWarmingSvcImpl.parseUrlResourceType(myFhirContext, nextSearchUrl);
+			RuntimeResourceDefinition resourceDef = UrlUtil.parseUrlResourceType(myFhirContext, nextSearchUrl);
 			String queryPart = nextSearchUrl.substring(nextSearchUrl.indexOf('?'));
 			String resourceType = resourceDef.getName();
 

hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/subscription/dbmatcher/CompositeInMemoryDaoSubscriptionMatcher.java

@@ -24,8 +24,8 @@ import ca.uhn.fhir.jpa.dao.DaoConfig;
 import ca.uhn.fhir.jpa.subscription.module.CanonicalSubscription;
 import ca.uhn.fhir.jpa.subscription.module.ResourceModifiedMessage;
 import ca.uhn.fhir.jpa.subscription.module.matcher.ISubscriptionMatcher;
-import ca.uhn.fhir.jpa.subscription.module.matcher.SubscriptionMatchResult;
 import ca.uhn.fhir.jpa.subscription.module.matcher.InMemorySubscriptionMatcher;
+import ca.uhn.fhir.jpa.subscription.module.matcher.SubscriptionMatchResult;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -48,7 +48,10 @@ public class CompositeInMemoryDaoSubscriptionMatcher implements ISubscriptionMat
 		SubscriptionMatchResult result;
 		if (myDaoConfig.isEnableInMemorySubscriptionMatching()) {
 			result = myInMemorySubscriptionMatcher.match(theSubscription, theMsg);
-			if (!result.supported()) {
+			if (result.supported()) {
+				// TODO KHS test
+				result.setInMemory(true);
+			} else {
 				ourLog.info("Criteria {} for Subscription {} not supported by InMemoryMatcher: {}.  Reverting to DatabaseMatcher", theSubscription.getCriteriaString(), theSubscription.getIdElementString(), result.getUnsupportedReason());
 				result = myDaoSubscriptionMatcher.match(theSubscription, theMsg);
 			}

hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/subscription/dbmatcher/DaoSubscriptionMatcher.java

@@ -24,7 +24,6 @@ import ca.uhn.fhir.context.FhirContext;
 import ca.uhn.fhir.context.RuntimeResourceDefinition;
 import ca.uhn.fhir.jpa.dao.DaoRegistry;
 import ca.uhn.fhir.jpa.dao.IFhirResourceDao;
-import ca.uhn.fhir.jpa.provider.ServletSubRequestDetails;
 import ca.uhn.fhir.jpa.searchparam.MatchUrlService;
 import ca.uhn.fhir.jpa.searchparam.SearchParameterMap;
 import ca.uhn.fhir.jpa.subscription.module.CanonicalSubscription;
@@ -32,7 +31,6 @@ import ca.uhn.fhir.jpa.subscription.module.ResourceModifiedMessage;
 import ca.uhn.fhir.jpa.subscription.module.matcher.ISubscriptionMatcher;
 import ca.uhn.fhir.jpa.subscription.module.matcher.SubscriptionMatchResult;
 import ca.uhn.fhir.rest.api.server.IBundleProvider;
-import ca.uhn.fhir.rest.api.server.RequestDetails;
 import org.hl7.fhir.instance.model.api.IBaseResource;
 import org.hl7.fhir.instance.model.api.IIdType;
 import org.slf4j.Logger;
@@ -63,13 +61,13 @@ public class DaoSubscriptionMatcher implements ISubscriptionMatcher {
 
 		ourLog.debug("Subscription check found {} results for query: {}", results.size(), criteria);
 
-		return new SubscriptionMatchResult(results.size() > 0, "DATABASE");
+		return SubscriptionMatchResult.fromBoolean(results.size() > 0);
 	}
 	
 	/**
 	 * Search based on a query criteria
 	 */
-	protected IBundleProvider performSearch(String theCriteria) {
+	private IBundleProvider performSearch(String theCriteria) {
 		IFhirResourceDao<?> subscriptionDao = myDaoRegistry.getSubscriptionDao();
 		RuntimeResourceDefinition responseResourceDef = subscriptionDao.validateCriteriaAndReturnResourceDefinition(theCriteria);
 		SearchParameterMap responseCriteriaUrl = myMatchUrlService.translateMatchUrl(theCriteria, responseResourceDef);

hapi-fhir-jpaserver-base/src/test/java/ca/uhn/fhir/jpa/subscription/module/matcher/InMemorySubscriptionMatcherTestR4.java

@@ -7,7 +7,6 @@ import ca.uhn.fhir.jpa.searchparam.SearchParameterMap;
 import ca.uhn.fhir.jpa.subscription.module.CanonicalSubscription;
 import ca.uhn.fhir.jpa.subscription.module.ResourceModifiedMessage;
 import ca.uhn.fhir.model.api.TemporalPrecisionEnum;
-import ca.uhn.fhir.rest.api.server.IBundleProvider;
 import ca.uhn.fhir.rest.param.*;
 import ca.uhn.fhir.rest.server.exceptions.InternalErrorException;
 import org.apache.commons.lang3.StringUtils;
@@ -36,28 +35,41 @@ public class InMemorySubscriptionMatcherTestR4 {
 	@Autowired
 	InMemorySubscriptionMatcher myInMemorySubscriptionMatcher;
 	@Autowired
+	SubscriptionStrategyEvaluator mySubscriptionStrategyEvaluator;
+	@Autowired
 	FhirContext myContext;
 
-	private SubscriptionMatchResult match(IBaseResource resource, SearchParameterMap params) {
+	private void assertMatched(Resource resource, SearchParameterMap params) {
-		String criteria = params.toNormalizedQueryString(myContext);
-		ourLog.info("Criteria: <{}>", criteria);
-		return myInMemorySubscriptionMatcher.match(criteria, resource);
-	}
-
-	private void assertUnsupported(IBaseResource resource, SearchParameterMap params) {
-		assertFalse(match(resource, params).supported());
-	}
-
-	private void assertMatched(IBaseResource resource, SearchParameterMap params) {
 		SubscriptionMatchResult result = match(resource, params);
 		assertTrue(result.getUnsupportedReason(), result.supported());
 		assertTrue(result.matched());
+		assertEquals(SubscriptionMatchingStrategy.IN_MEMORY, mySubscriptionStrategyEvaluator.determineStrategy(getCriteria(resource, params)));
 	}
 
-	private void assertNotMatched(IBaseResource resource, SearchParameterMap params) {
+	private void assertNotMatched(Resource resource, SearchParameterMap params) {
 		SubscriptionMatchResult result = match(resource, params);
 		assertTrue(result.getUnsupportedReason(), result.supported());
 		assertFalse(result.matched());
+		assertEquals(SubscriptionMatchingStrategy.IN_MEMORY, mySubscriptionStrategyEvaluator.determineStrategy(getCriteria(resource, params)));
+	}
+
+	private SubscriptionMatchResult match(Resource theResource, SearchParameterMap theParams) {
+		return match(getCriteria(theResource, theParams), theResource);
+	}
+
+	private String getCriteria(Resource theResource, SearchParameterMap theParams) {
+		return theResource.getResourceType().name() + theParams.toNormalizedQueryString(myContext);
+	}
+
+	private SubscriptionMatchResult match(String criteria, Resource theResource) {
+		ourLog.info("Criteria: <{}>", criteria);
+		return myInMemorySubscriptionMatcher.match(criteria, theResource);
+	}
+
+	private void assertUnsupported(Resource resource, SearchParameterMap theParams) {
+		SubscriptionMatchResult result = match(resource, theParams);
+		assertFalse(result.supported());
+		assertEquals(SubscriptionMatchingStrategy.DATABASE, mySubscriptionStrategyEvaluator.determineStrategy(getCriteria(resource, theParams)));
 	}
 
 	/*
@@ -93,7 +105,6 @@ public class InMemorySubscriptionMatcherTestR4 {
 
 		SearchParameterMap params = new SearchParameterMap();
 		params.add("_has", new HasParam("Observation", "subject", "identifier", "urn:system|FOO"));
-		String criteria = params.toNormalizedQueryString(myContext);
 		assertUnsupported(patient, params);
 	}
 
@@ -130,7 +141,7 @@ public class InMemorySubscriptionMatcherTestR4 {
 
 		TokenParam v0 = new TokenParam("foo", "testSearchCompositeParamN01");
 		StringParam v1 = new StringParam("testSearchCompositeParamS01");
-		CompositeParam<TokenParam, StringParam> val = new CompositeParam<TokenParam, StringParam>(v0, v1);
+		CompositeParam<TokenParam, StringParam> val = new CompositeParam<>(v0, v1);
 		SearchParameterMap params = new SearchParameterMap().setLoadSynchronous(true).add(Observation.SP_CODE_VALUE_STRING, val);
 		assertUnsupported(o1, params);
 	}
@@ -170,11 +181,11 @@ public class InMemorySubscriptionMatcherTestR4 {
 	}
 
 	@Test
-	public void testIdNotSupported() {
+	public void testIdSupported() {
 		Observation o1 = new Observation();
 		SearchParameterMap params = new SearchParameterMap();
 		params.add("_id", new StringParam("testSearchForUnknownAlphanumericId"));
-		assertUnsupported(o1, params);
+		assertNotMatched(o1, params);
 	}
 
 	@Test
@@ -190,7 +201,7 @@ public class InMemorySubscriptionMatcherTestR4 {
 	}
 
 	@Test
-	public void testSearchLastUpdatedParamUnsupported() throws InterruptedException {
+	public void testSearchLastUpdatedParamUnsupported() {
 		String methodName = "testSearchLastUpdatedParam";
 		DateTimeType today = new DateTimeType(new Date(), TemporalPrecisionEnum.DAY);
 		Patient patient = new Patient();
@@ -294,12 +305,12 @@ public class InMemorySubscriptionMatcherTestR4 {
 	@Test
 	public void testSearchQuantityWrongParam() {
 		Condition c1 = new Condition();
-		c1.setAbatement(new Range().setLow((SimpleQuantity) new SimpleQuantity().setValue(1L)).setHigh((SimpleQuantity) new SimpleQuantity().setValue(1L)));
+		c1.setAbatement(new Range().setLow(new SimpleQuantity().setValue(1L)).setHigh(new SimpleQuantity().setValue(1L)));
 		SearchParameterMap params = new SearchParameterMap().setLoadSynchronous(true).add(Condition.SP_ABATEMENT_AGE, new QuantityParam("1"));
 		assertMatched(c1, params);
 
 		Condition c2 = new Condition();
-		c2.setOnset(new Range().setLow((SimpleQuantity) new SimpleQuantity().setValue(1L)).setHigh((SimpleQuantity) new SimpleQuantity().setValue(1L)));
+		c2.setOnset(new Range().setLow(new SimpleQuantity().setValue(1L)).setHigh(new SimpleQuantity().setValue(1L)));
 
 		params = new SearchParameterMap().add(Condition.SP_ONSET_AGE, new QuantityParam("1"));
 		assertMatched(c2, params);
@@ -414,7 +425,7 @@ public class InMemorySubscriptionMatcherTestR4 {
 	}
 
 	@Test
-	public void testSearchStringParam() throws Exception {
+	public void testSearchStringParam() {
 		Patient patient = new Patient();
 		patient.addIdentifier().setSystem("urn:system").setValue("001");
 		patient.addName().setFamily("Tester_testSearchStringParam").addGiven("Joe");
@@ -569,13 +580,11 @@ public class InMemorySubscriptionMatcherTestR4 {
 
 	@Test
 	public void testSearchTokenWithNotModifierUnsupported() {
-		String male, female;
 		Patient patient = new Patient();
 		patient.addIdentifier().setSystem("urn:system").setValue("001");
 		patient.addName().setFamily("Tester").addGiven("Joe");
 		patient.setGender(Enumerations.AdministrativeGender.MALE);
 
-		List<String> patients;
 		SearchParameterMap params;
 
 		params = new SearchParameterMap();
@@ -640,7 +649,6 @@ public class InMemorySubscriptionMatcherTestR4 {
 		o2.setValue(q2);
 
 		SearchParameterMap map;
-		IBundleProvider found;
 		QuantityParam param;
 
 		map = new SearchParameterMap();
@@ -682,9 +690,7 @@ public class InMemorySubscriptionMatcherTestR4 {
 		Patient pt1 = new Patient();
 		pt1.addName().setFamily("ABCDEFGHIJK");
 
-		List<String> ids;
 		SearchParameterMap map;
-		IBundleProvider results;
 
 		// Contains = true
 		map = new SearchParameterMap();
@@ -875,7 +881,7 @@ public class InMemorySubscriptionMatcherTestR4 {
 		map.add(Observation.SP_DATE, new DateParam("2011-01-02"));
 
 		for (Observation obs : nlist) {
-//			assertNotMatched(obs, map);
+			assertNotMatched(obs, map);
 		}
 		for (Observation obs : ylist) {
 			ourLog.info("Obs {} has time {}", obs.getId(), obs.getEffectiveDateTimeType().getValue().toString());

hapi-fhir-jpaserver-base/src/test/java/ca/uhn/fhir/jpa/subscription/resthook/RestHookTestDstu3Test.java

@@ -6,6 +6,8 @@ import ca.uhn.fhir.jpa.dao.DaoConfig;
 import ca.uhn.fhir.jpa.provider.dstu3.BaseResourceProviderDstu3Test;
 import ca.uhn.fhir.jpa.subscription.NotificationServlet;
 import ca.uhn.fhir.jpa.subscription.SubscriptionTestUtil;
+import ca.uhn.fhir.jpa.subscription.module.cache.SubscriptionConstants;
+import ca.uhn.fhir.jpa.subscription.module.matcher.SubscriptionMatchingStrategy;
 import ca.uhn.fhir.rest.annotation.Create;
 import ca.uhn.fhir.rest.annotation.ResourceParam;
 import ca.uhn.fhir.rest.annotation.Update;
@@ -106,12 +108,11 @@ public class RestHookTestDstu3Test extends BaseResourceProviderDstu3Test {
 		subscription.setChannel(channel);
 
 		MethodOutcome methodOutcome = ourClient.create().resource(subscription).execute();
-		subscription.setId(methodOutcome.getId().getIdPart());
 		mySubscriptionIds.add(methodOutcome.getId());
 
 		waitForQueueToDrain();
 
-		return subscription;
+		return (Subscription)methodOutcome.getResource();
 	}
 
 	private Observation sendObservation(String code, String system) {
@@ -352,7 +353,7 @@ public class RestHookTestDstu3Test extends BaseResourceProviderDstu3Test {
 		waitForSize(0, ourCreatedObservations);
 		waitForSize(5, ourUpdatedObservations);
 
-		Assert.assertFalse(subscription1.getId().equals(subscription2.getId()));
+		Assert.assertNotEquals(subscription1.getId(), subscription2.getId());
 		Assert.assertFalse(observation1.getId().isEmpty());
 		Assert.assertFalse(observation2.getId().isEmpty());
 	}
@@ -414,6 +415,58 @@ public class RestHookTestDstu3Test extends BaseResourceProviderDstu3Test {
 		mySubscriptionTestUtil.waitForQueueToDrain();
 	}
 
+	@Test
+	public void testSubscriptionActivatesInMemoryTag() throws Exception {
+		String payload = "application/fhir+xml";
+
+		String code = "1000000050";
+		String criteria1 = "Observation?code=SNOMED-CT|" + code + "&_format=xml";
+
+		Subscription subscriptionOrig = createSubscription(criteria1, payload, ourListenerServerBase);
+		IdType subscriptionId = subscriptionOrig.getIdElement();
+
+		assertEquals(Subscription.SubscriptionStatus.REQUESTED, subscriptionOrig.getStatus());
+		List<Coding> tags = subscriptionOrig.getMeta().getTag();
+		assertEquals(1, tags.size());
+		Coding tag = tags.get(0);
+		assertEquals(SubscriptionConstants.EXT_SUBSCRIPTION_MATCHING_STRATEGY, tag.getSystem());
+		assertEquals(SubscriptionMatchingStrategy.IN_MEMORY.toString(), tag.getCode());
+		assertEquals("In-memory", tag.getDisplay());
+
+		Subscription subscriptionActivated = ourClient.read().resource(Subscription.class).withId(subscriptionId.toUnqualifiedVersionless()).execute();
+		assertEquals(Subscription.SubscriptionStatus.ACTIVE, subscriptionActivated.getStatus());
+	   tags = subscriptionActivated.getMeta().getTag();
+		assertEquals(1, tags.size());
+		tag = tags.get(0);
+		assertEquals(SubscriptionConstants.EXT_SUBSCRIPTION_MATCHING_STRATEGY, tag.getSystem());
+		assertEquals(SubscriptionMatchingStrategy.IN_MEMORY.toString(), tag.getCode());
+		assertEquals("In-memory", tag.getDisplay());
+	}
+
+	@Test
+	public void testSubscriptionActivatesDatabaseTag() throws Exception {
+		String payload = "application/fhir+xml";
+
+		Subscription subscriptionOrig = createSubscription("Observation?code=17861-6&context.type=IHD", payload, ourListenerServerBase);
+		IdType subscriptionId = subscriptionOrig.getIdElement();
+
+		List<Coding> tags = subscriptionOrig.getMeta().getTag();
+		assertEquals(1, tags.size());
+		Coding tag = tags.get(0);
+		assertEquals(SubscriptionConstants.EXT_SUBSCRIPTION_MATCHING_STRATEGY, tag.getSystem());
+		assertEquals(SubscriptionMatchingStrategy.DATABASE.toString(), tag.getCode());
+		assertEquals("Database", tag.getDisplay());
+
+		Subscription subscription = ourClient.read().resource(Subscription.class).withId(subscriptionId.toUnqualifiedVersionless()).execute();
+		assertEquals(Subscription.SubscriptionStatus.ACTIVE, subscription.getStatus());
+		 tags = subscription.getMeta().getTag();
+		assertEquals(1, tags.size());
+		 tag = tags.get(0);
+		assertEquals(SubscriptionConstants.EXT_SUBSCRIPTION_MATCHING_STRATEGY, tag.getSystem());
+		assertEquals(SubscriptionMatchingStrategy.DATABASE.toString(), tag.getCode());
+		assertEquals("Database", tag.getDisplay());
+	}
+
 	@BeforeClass
 	public static void startListenerServer() throws Exception {
 		ourListenerPort = PortUtil.findFreePort();

hapi-fhir-jpaserver-model/src/main/java/ca/uhn/fhir/jpa/model/interceptor/api/Pointcut.java

@@ -86,7 +86,7 @@ public enum Pointcut {
 	SUBSCRIPTION_AFTER_ACTIVE_SUBSCRIPTION_REGISTERED("ca.uhn.fhir.jpa.subscription.module.CanonicalSubscription"),
 
 	/**
-	 * Invoked before a resource will be updated, immediately before the resource
+	 * Invoked before a resource will be created, immediately before the resource
 	 * is persisted to the database.
 	 * <p>
 	 * Hooks will have access to the contents of the resource being created

hapi-fhir-jpaserver-subscription/src/main/java/ca/uhn/fhir/jpa/subscription/module/cache/SubscriptionCanonicalizer.java

@@ -24,12 +24,14 @@ import ca.uhn.fhir.context.ConfigurationException;
 import ca.uhn.fhir.context.FhirContext;
 import ca.uhn.fhir.jpa.subscription.module.CanonicalSubscription;
 import ca.uhn.fhir.jpa.subscription.module.CanonicalSubscriptionChannelType;
+import ca.uhn.fhir.jpa.subscription.module.matcher.SubscriptionMatchingStrategy;
 import ca.uhn.fhir.model.api.ExtensionDt;
 import ca.uhn.fhir.model.api.IPrimitiveDatatype;
 import ca.uhn.fhir.rest.server.exceptions.InternalErrorException;
 import ca.uhn.fhir.rest.server.exceptions.PreconditionFailedException;
 import org.hl7.fhir.dstu3.model.Subscription;
 import org.hl7.fhir.exceptions.FHIRException;
+import org.hl7.fhir.instance.model.api.IBaseMetaType;
 import org.hl7.fhir.instance.model.api.IBaseReference;
 import org.hl7.fhir.instance.model.api.IBaseResource;
 import org.hl7.fhir.r4.model.Extension;
@@ -261,4 +263,33 @@ public class SubscriptionCanonicalizer<S extends IBaseResource> {
 
 		return retVal;
 	}
+
+	public String getCriteria(IBaseResource theSubscription) {
+		switch (myFhirContext.getVersion().getVersion()) {
+			case DSTU2:
+				return ((ca.uhn.fhir.model.dstu2.resource.Subscription)theSubscription).getCriteria();
+			case DSTU3:
+				return ((org.hl7.fhir.dstu3.model.Subscription)theSubscription).getCriteria();
+			case R4:
+				return ((org.hl7.fhir.r4.model.Subscription)theSubscription).getCriteria();
+			default:
+				throw new ConfigurationException("Subscription not supported for version: " + myFhirContext.getVersion().getVersion());
+		}
+	}
+
+
+	public void setMatchingStrategyTag(FhirContext theFhirContext, IBaseResource theSubscription, SubscriptionMatchingStrategy theStrategy) {
+		IBaseMetaType meta = theSubscription.getMeta();
+		String value = theStrategy.toString();
+		String display;
+
+		if (theStrategy == SubscriptionMatchingStrategy.DATABASE) {
+			display = "Database";
+		} else if (theStrategy == SubscriptionMatchingStrategy.IN_MEMORY) {
+			display = "In-memory";
+		} else {
+			throw new IllegalStateException("Unknown " + SubscriptionMatchingStrategy.class.getSimpleName() + ": "+theStrategy);
+		}
+		meta.addTag().setSystem(SubscriptionConstants.EXT_SUBSCRIPTION_MATCHING_STRATEGY).setCode(value).setDisplay(display);
+	}
 }

hapi-fhir-jpaserver-subscription/src/main/java/ca/uhn/fhir/jpa/subscription/module/cache/SubscriptionConstants.java

@@ -67,6 +67,13 @@ public class SubscriptionConstants {
 	 */
 	public static final String EXT_SUBSCRIPTION_RESTHOOK_DELIVER_LATEST_VERSION = "http://hapifhir.io/fhir/StructureDefinition/subscription-resthook-deliver-latest-version";
 
+	/**
+	 * Indicate which strategy will be used to match this subscription
+	 */
+
+	public static final String EXT_SUBSCRIPTION_MATCHING_STRATEGY = "http://hapifhir.io/fhir/StructureDefinition/subscription-matching-strategy";
+
+
 	/**
 	 * The number of threads used in subscription channel processing
 	 */
@@ -79,12 +86,8 @@ public class SubscriptionConstants {
 	public static final int MAX_SUBSCRIPTION_RESULTS = 1000;
 
 	/**
-	 * The size of the queue used for sending resources to the subscription matching processor
+	 * The size of the queue used for sending resources to the subscription matching processor and by each subscription delivery queue
 	 */
-	public static final int PROCESSING_EXECUTOR_QUEUE_SIZE = 1000;
 
-	/**
-	 * The size of the queue used by each subscription delivery queue
-	 */
 	public static final int DELIVERY_EXECUTOR_QUEUE_SIZE = 1000;
 }

hapi-fhir-jpaserver-subscription/src/main/java/ca/uhn/fhir/jpa/subscription/module/matcher/CriteriaResourceMatcher.java

@@ -33,6 +33,7 @@ import ca.uhn.fhir.rest.param.BaseParamWithPrefix;
 import ca.uhn.fhir.rest.param.ReferenceParam;
 import ca.uhn.fhir.rest.param.StringParam;
 import ca.uhn.fhir.rest.server.exceptions.InvalidRequestException;
+import ca.uhn.fhir.util.UrlUtil;
 import org.hl7.fhir.instance.model.api.IAnyResource;
 import org.hl7.fhir.instance.model.api.IBaseResource;
 import org.hl7.fhir.instance.model.api.IIdType;
@@ -54,79 +55,93 @@ public class CriteriaResourceMatcher {
 	@Autowired
 	FhirContext myFhirContext;
 
+	/**
+	 * This method is called in two different scenarios.  With a null theResource, it determines whether database matching might be required.
+	 * Otherwise, it tries to perform the match in-memory, returning UNSUPPORTED if it's not possible.
+	 *
+	 * Note that there will be cases where it returns UNSUPPORTED with a null resource, but when a non-null resource it returns supported and no match.
+	 * This is because an earlier parameter may be matchable in-memory in which case processing stops and we never get to the parameter
+	 * that would have required a database call.
+	 *
+	 */
+
 	public SubscriptionMatchResult match(String theCriteria, IBaseResource theResource, ResourceIndexedSearchParams theSearchParams) {
+		RuntimeResourceDefinition resourceDefinition;
+		if (theResource == null) {
+			resourceDefinition = UrlUtil.parseUrlResourceType(myFhirContext, theCriteria);
+		} else {
+			resourceDefinition = myFhirContext.getResourceDefinition(theResource);
+		}
 		SearchParameterMap searchParameterMap;
 		try {
-			searchParameterMap = myMatchUrlService.translateMatchUrl(theCriteria, myFhirContext.getResourceDefinition(theResource));
+			searchParameterMap = myMatchUrlService.translateMatchUrl(theCriteria, resourceDefinition);
 		} catch (UnsupportedOperationException e) {
-			return new SubscriptionMatchResult(theCriteria, CRITERIA);
+			return SubscriptionMatchResult.unsupportedFromReason(SubscriptionMatchResult.PARSE_FAIL);
 		}
 		searchParameterMap.clean();
 		if (searchParameterMap.getLastUpdated() != null) {
-			return new SubscriptionMatchResult(Constants.PARAM_LASTUPDATED, "Standard Parameters not supported");
+			return SubscriptionMatchResult.unsupportedFromParameterAndReason(Constants.PARAM_LASTUPDATED, SubscriptionMatchResult.STANDARD_PARAMETER);
 		}
 
 		for (Map.Entry<String, List<List<? extends IQueryParameterType>>> entry : searchParameterMap.entrySet()) {
 			String theParamName = entry.getKey();
 			List<List<? extends IQueryParameterType>> theAndOrParams = entry.getValue();
-			SubscriptionMatchResult result = matchIdsWithAndOr(theParamName, theAndOrParams, theResource, theSearchParams);
+			SubscriptionMatchResult result = matchIdsWithAndOr(theParamName, theAndOrParams, resourceDefinition, theResource, theSearchParams);
 			if (!result.matched()){
 				return result;
 			}
 		}
-		return new SubscriptionMatchResult(true, CRITERIA);
+		return SubscriptionMatchResult.successfulMatch();
 	}
 
 	// This method is modelled from SearchBuilder.searchForIdsWithAndOr()
-	private SubscriptionMatchResult matchIdsWithAndOr(String theParamName, List<List<? extends IQueryParameterType>> theAndOrParams, IBaseResource theResource, ResourceIndexedSearchParams theSearchParams) {
+	private SubscriptionMatchResult matchIdsWithAndOr(String theParamName, List<List<? extends IQueryParameterType>> theAndOrParams, RuntimeResourceDefinition theResourceDefinition, IBaseResource theResource, ResourceIndexedSearchParams theSearchParams) {
 		if (theAndOrParams.isEmpty()) {
-			return new SubscriptionMatchResult(true, CRITERIA);
+			return SubscriptionMatchResult.successfulMatch();
 		}
 
 		if (hasQualifiers(theAndOrParams)) {
-
+			return SubscriptionMatchResult.unsupportedFromParameterAndReason(theParamName, SubscriptionMatchResult.STANDARD_PARAMETER);
-			return new SubscriptionMatchResult(theParamName, "Standard Parameters not supported.");
-
 		}
 		if (hasPrefixes(theAndOrParams)) {
 
-			return new SubscriptionMatchResult(theParamName, "Prefixes not supported.");
+			return SubscriptionMatchResult.unsupportedFromParameterAndReason(theParamName, SubscriptionMatchResult.PREFIX);
 
 		}
 		if (hasChain(theAndOrParams)) {
-			return new SubscriptionMatchResult(theParamName, "Chained references are not supported");
+			return SubscriptionMatchResult.unsupportedFromParameterAndReason(theParamName, SubscriptionMatchResult.CHAIN);
 		}
 		switch (theParamName) {
 			case IAnyResource.SP_RES_ID:
 
-				return new SubscriptionMatchResult(matchIdsAndOr(theAndOrParams, theResource), CRITERIA);
+				return SubscriptionMatchResult.fromBoolean(matchIdsAndOr(theAndOrParams, theResource));
 
 			case IAnyResource.SP_RES_LANGUAGE:
-
-				return new SubscriptionMatchResult(theParamName, CRITERIA);
-
 			case Constants.PARAM_HAS:
-
-				return new SubscriptionMatchResult(theParamName, CRITERIA);
-
 			case Constants.PARAM_TAG:
 			case Constants.PARAM_PROFILE:
 			case Constants.PARAM_SECURITY:
 
-				return new SubscriptionMatchResult(theParamName, CRITERIA);
+				return SubscriptionMatchResult.unsupportedFromParameterAndReason(theParamName, SubscriptionMatchResult.PARAM);
 
 			default:
 
-				String resourceName = myFhirContext.getResourceDefinition(theResource).getName();
+				String resourceName = theResourceDefinition.getName();
 				RuntimeSearchParam paramDef = mySearchParamRegistry.getActiveSearchParam(resourceName, theParamName);
 				return matchResourceParam(theParamName, theAndOrParams, theSearchParams, resourceName, paramDef);
 		}
 	}
 
 	private boolean matchIdsAndOr(List<List<? extends IQueryParameterType>> theAndOrParams, IBaseResource theResource) {
+		if (theResource == null) {
+			return true;
+		}
 		return theAndOrParams.stream().allMatch(nextAnd -> matchIdsOr(nextAnd, theResource));
 	}
 	private boolean matchIdsOr(List<? extends IQueryParameterType> theOrParams, IBaseResource theResource) {
+		if (theResource == null) {
+			return true;
+		}
 		return theOrParams.stream().anyMatch(param -> param instanceof StringParam && matchId(((StringParam)param).getValue(), theResource.getIdElement()));
 	}
 
@@ -144,16 +159,20 @@ public class CriteriaResourceMatcher {
 				case URI:
 				case DATE:
 				case REFERENCE:
-					return new SubscriptionMatchResult(theAndOrParams.stream().anyMatch(nextAnd -> matchParams(theResourceName, theParamName, theParamDef, nextAnd, theSearchParams)), CRITERIA);
+					if (theSearchParams == null) {
+						return SubscriptionMatchResult.successfulMatch();
+					} else {
+						return SubscriptionMatchResult.fromBoolean(theAndOrParams.stream().anyMatch(nextAnd -> matchParams(theResourceName, theParamName, theParamDef, nextAnd, theSearchParams)));
+					}
 				case COMPOSITE:
 				case HAS:
 				case SPECIAL:
 				default:
-					return new SubscriptionMatchResult(theParamName, CRITERIA);
+					return SubscriptionMatchResult.unsupportedFromParameterAndReason(theParamName, SubscriptionMatchResult.PARAM);
 			}
 		} else {
 			if (Constants.PARAM_CONTENT.equals(theParamName) || Constants.PARAM_TEXT.equals(theParamName)) {
-				return new SubscriptionMatchResult(theParamName, CRITERIA);
+				return SubscriptionMatchResult.unsupportedFromParameterAndReason(theParamName, SubscriptionMatchResult.PARAM);
 			} else {
 				throw new InvalidRequestException("Unknown search parameter " + theParamName + " for resource type " + theResourceName);
 			}

hapi-fhir-jpaserver-subscription/src/main/java/ca/uhn/fhir/jpa/subscription/module/matcher/SubscriptionMatchResult.java

@@ -9,9 +9,9 @@ package ca.uhn.fhir.jpa.subscription.module.matcher;
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -21,26 +21,47 @@ package ca.uhn.fhir.jpa.subscription.module.matcher;
  */
 
 public class SubscriptionMatchResult {
+	public static final String PARSE_FAIL = "Failed to translate parse query string";
+	public static final String STANDARD_PARAMETER = "Standard parameters not supported";
+	public static final String PREFIX = "Prefixes not supported";
+	public static final String CHAIN = "Chained references are not supported";
+	public static final String PARAM = "Param not supported";
+
 	private final boolean myMatch;
 	private final boolean mySupported;
 	private final String myUnsupportedParameter;
 	private final String myUnsupportedReason;
-	private final String myMatcherShortName;
 
-	public SubscriptionMatchResult(boolean theMatch, String theMatcherShortName) {
+	private boolean myInMemory = false;
+
+	private SubscriptionMatchResult(boolean theMatch) {
 		this.myMatch = theMatch;
 		this.mySupported = true;
 		this.myUnsupportedParameter = null;
 		this.myUnsupportedReason = null;
-		this.myMatcherShortName = theMatcherShortName;
 	}
 
-	public SubscriptionMatchResult(String theUnsupportedParameter, String theMatcherShortName) {
+	private SubscriptionMatchResult(String theUnsupportedParameter, String theUnsupportedReason) {
 		this.myMatch = false;
 		this.mySupported = false;
 		this.myUnsupportedParameter = theUnsupportedParameter;
-		this.myUnsupportedReason = "Parameter not supported";
+		this.myUnsupportedReason = theUnsupportedReason;
-		this.myMatcherShortName = theMatcherShortName;
+	}
+
+	public static SubscriptionMatchResult successfulMatch() {
+		return new SubscriptionMatchResult(true);
+	}
+
+	public static SubscriptionMatchResult fromBoolean(boolean theMatched) {
+		return new SubscriptionMatchResult(theMatched);
+	}
+
+	public static SubscriptionMatchResult unsupportedFromReason(String theUnsupportedReason) {
+		return new SubscriptionMatchResult(null, theUnsupportedReason);
+	}
+
+	public static SubscriptionMatchResult unsupportedFromParameterAndReason(String theUnsupportedParameter, String theUnsupportedReason) {
+		return new SubscriptionMatchResult(theUnsupportedParameter, theUnsupportedReason);
 	}
 
 	public boolean supported() {
@@ -52,14 +73,17 @@ public class SubscriptionMatchResult {
 	}
 
 	public String getUnsupportedReason() {
-		return "Parameter: <" + myUnsupportedParameter + "> Reason: " + myUnsupportedReason;
+		if (myUnsupportedParameter != null) {
+			return "Parameter: <" + myUnsupportedParameter + "> Reason: " + myUnsupportedReason;
+		}
+		return myUnsupportedReason;
 	}
 
-	/**
+	public boolean isInMemory() {
-	 * Returns a short name of the matcher that generated this
+		return myInMemory;
-	 * response, for use in logging
+	}
-	 */
+
-	public String matcherShortName() {
+	public void setInMemory(boolean theInMemory) {
-		return myMatcherShortName;
+		myInMemory = theInMemory;
 	}
 }

hapi-fhir-jpaserver-subscription/src/main/java/ca/uhn/fhir/jpa/subscription/module/matcher/SubscriptionMatchingStrategy.java

@@ -0,0 +1,14 @@
+package ca.uhn.fhir.jpa.subscription.module.matcher;
+
+public enum SubscriptionMatchingStrategy {
+	/**
+	 * Resources can be matched against this subcription in-memory without needing to make a call out to a FHIR Repository
+	 */
+	IN_MEMORY,
+
+	/**
+	 * Resources cannot be matched against this subscription in-memory.  We need to make a call to a FHIR Repository to determine a match
+	 */
+	DATABASE
+}
+

hapi-fhir-jpaserver-subscription/src/main/java/ca/uhn/fhir/jpa/subscription/module/matcher/SubscriptionStrategyEvaluator.java

@@ -0,0 +1,19 @@
+package ca.uhn.fhir.jpa.subscription.module.matcher;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class SubscriptionStrategyEvaluator {
+
+	@Autowired
+	private CriteriaResourceMatcher myCriteriaResourceMatcher;
+
+	public SubscriptionMatchingStrategy determineStrategy(String theCriteria) {
+		SubscriptionMatchResult result = myCriteriaResourceMatcher.match(theCriteria, null, null);
+		if (result.supported()) {
+			return SubscriptionMatchingStrategy.IN_MEMORY;
+		}
+		return SubscriptionMatchingStrategy.DATABASE;
+	}
+}

hapi-fhir-jpaserver-subscription/src/main/java/ca/uhn/fhir/jpa/subscription/module/subscriber/SubscriptionMatchingSubscriber.java

@@ -117,8 +117,10 @@ public class SubscriptionMatchingSubscriber implements MessageHandler {
 			if (!matchResult.matched()) {
 				continue;
 			}
-
+			ourLog.debug("Subscription {} was matched by resource {} {}",
-			ourLog.info("Subscription {} was matched by resource {} using matcher {}", nextActiveSubscription.getSubscription().getIdElement(myFhirContext).getValue(), resourceId.toUnqualifiedVersionless().getValue(), matchResult.matcherShortName());
+				nextActiveSubscription.getSubscription().getIdElement(myFhirContext).getValue(),
+				resourceId.toUnqualifiedVersionless().getValue(),
+				matchResult.isInMemory() ? "in-memory" : "by querying the repository");
 
 			IBaseResource payload = theMsg.getNewPayload(myFhirContext);
 
@@ -161,7 +163,7 @@ public class SubscriptionMatchingSubscriber implements MessageHandler {
 			criteriaResource = criteriaResource.substring(0, criteriaResource.indexOf("?"));
 		}
 
-		if (resourceType != null && criteriaString != null && !criteriaResource.equals(resourceType)) {
+		if (resourceType != null && !criteriaResource.equals(resourceType)) {
 			ourLog.trace("Skipping subscription search for {} because it does not match the criteria {}", resourceType, criteriaString);
 			return false;
 		}

hapi-fhir-jpaserver-subscription/src/test/java/ca/uhn/fhir/jpa/subscription/module/matcher/InMemorySubscriptionMatcherTestR3.java

@@ -7,22 +7,22 @@ import org.hl7.fhir.dstu3.model.*;
 import org.hl7.fhir.dstu3.model.codesystems.MedicationRequestCategory;
 import org.hl7.fhir.instance.model.api.IBaseResource;
 import org.hl7.fhir.instance.model.api.IIdType;
-import org.junit.Ignore;
 import org.junit.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 
-import java.util.Arrays;
 import java.util.Collections;
 
-import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.*;
-import static org.junit.Assert.assertTrue;
 
 public class InMemorySubscriptionMatcherTestR3 extends BaseSubscriptionDstu3Test {
+	@Autowired
+	SubscriptionStrategyEvaluator mySubscriptionStrategyEvaluator;
 	@Autowired
 	InMemorySubscriptionMatcher myInMemorySubscriptionMatcher;
 
 	private void assertUnsupported(IBaseResource resource, String criteria) {
 		assertFalse(myInMemorySubscriptionMatcher.match(criteria, resource).supported());
+		assertEquals(SubscriptionMatchingStrategy.DATABASE, mySubscriptionStrategyEvaluator.determineStrategy(criteria));
 	}
 
 	private void assertMatched(IBaseResource resource, String criteria) {
@@ -30,13 +30,20 @@ public class InMemorySubscriptionMatcherTestR3 extends BaseSubscriptionDstu3Test
 
 		assertTrue(result.supported());
 		assertTrue(result.matched());
+		assertEquals(SubscriptionMatchingStrategy.IN_MEMORY, mySubscriptionStrategyEvaluator.determineStrategy(criteria));
 	}
 
 	private void assertNotMatched(IBaseResource resource, String criteria) {
+		assertNotMatched(resource, criteria, SubscriptionMatchingStrategy.IN_MEMORY);
+	}
+
+	private void assertNotMatched(IBaseResource resource, String criteria, SubscriptionMatchingStrategy theSubscriptionMatchingStrategy) {
 		SubscriptionMatchResult result = myInMemorySubscriptionMatcher.match(criteria, resource);
 
 		assertTrue(result.supported());
 		assertFalse(result.matched());
+
+		assertEquals(theSubscriptionMatchingStrategy, mySubscriptionStrategyEvaluator.determineStrategy(criteria));
 	}
 
 
@@ -152,7 +159,7 @@ public class InMemorySubscriptionMatcherTestR3 extends BaseSubscriptionDstu3Test
 		{
 			Observation obs = new Observation();
 			obs.getCode().addCoding().setCode("XXX");
-			assertNotMatched(obs, criteria);
+			assertNotMatched(obs, criteria, SubscriptionMatchingStrategy.DATABASE);
 		}
 		{
 			Observation obs = new Observation();
@@ -168,7 +175,7 @@ public class InMemorySubscriptionMatcherTestR3 extends BaseSubscriptionDstu3Test
 		{
 			Observation obs = new Observation();
 			obs.getCode().addCoding().setCode("XXX");
-			assertNotMatched(obs, criteria);
+			assertNotMatched(obs, criteria, SubscriptionMatchingStrategy.DATABASE);
 		}
 		{
 			Observation obs = new Observation();
@@ -266,7 +273,7 @@ public class InMemorySubscriptionMatcherTestR3 extends BaseSubscriptionDstu3Test
 		{
 			Observation obs = new Observation();
 			obs.getCode().addCoding().setCode("XXX");
-			assertNotMatched(obs, criteria);
+			assertNotMatched(obs, criteria, SubscriptionMatchingStrategy.DATABASE);
 		}
 	}
 

hapi-fhir-jpaserver-subscription/src/test/java/ca/uhn/fhir/jpa/subscription/module/matcher/SubscriptionStrategyEvaluatorTest.java

@@ -0,0 +1,53 @@
+package ca.uhn.fhir.jpa.subscription.module.matcher;
+
+import ca.uhn.fhir.jpa.subscription.module.BaseSubscriptionDstu3Test;
+import ca.uhn.fhir.rest.server.exceptions.InvalidRequestException;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.ExpectedException;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.matchers.JUnitMatchers.containsString;
+
+public class SubscriptionStrategyEvaluatorTest extends BaseSubscriptionDstu3Test {
+	@Autowired
+	SubscriptionStrategyEvaluator mySubscriptionStrategyEvaluator;
+
+	@Rule
+	public ExpectedException exception = ExpectedException.none();
+
+	@Test
+	public void testInMemory() {
+		assertInMemory("Observation?");
+		assertInMemory("QuestionnaireResponse?questionnaire=HomeAbsenceHospitalizationRecord,ARIncenterAbsRecord");
+		assertInMemory("CommunicationRequest?occurrence==2018-10-17");
+		assertInMemory("ProcedureRequest?intent=original-order");
+		assertInMemory("MedicationRequest?intent=instance-order&category=outpatient&date==2018-10-19");
+		assertInMemory("MedicationRequest?intent=plan&category=outpatient&status=suspended,entered-in-error,cancelled,stopped");
+		assertDatabase("Observation?code=FR_Org1Blood2nd,FR_Org1Blood3rd,FR_Org%201BldCult,FR_Org2Blood2nd,FR_Org2Blood3rd,FR_Org%202BldCult,FR_Org3Blood2nd,FR_Org3Blood3rd,FR_Org3BldCult,FR_Org4Blood2nd,FR_Org4Blood3rd,FR_Org4BldCult,FR_Org5Blood2nd,FR_Org5Blood3rd,FR_Org%205BldCult,FR_Org6Blood2nd,FR_Org6Blood3rd,FR_Org6BldCult,FR_Org7Blood2nd,FR_Org7Blood3rd,FR_Org7BldCult,FR_Org8Blood2nd,FR_Org8Blood3rd,FR_Org8BldCult,FR_Org9Blood2nd,FR_Org9Blood3rd,FR_Org9BldCult,FR_Bld2ndCulture,FR_Bld3rdCulture,FR_Blood%20Culture,FR_Com1Bld3rd,FR_Com1BldCult,FR_Com2Bld2nd,FR_Com2Bld3rd,FR_Com2BldCult,FR_CultureBld2nd,FR_CultureBld3rd,FR_CultureBldCul,FR_GmStainBldCul,FR_GramStain2Bld,FR_GramStain3Bld,FR_GramStNegBac&context.type=IHD");
+		assertInMemory("Procedure?category=Hemodialysis");
+		assertInMemory("Procedure?code=HD_Standard&status=completed&location=Lab123");
+		assertInMemory("Procedure?code=HD_Standard&status=completed");
+		assertInMemory("QuestionnaireResponse?questionnaire=HomeAbsenceHospitalizationRecord,ARIncenterAbsRecord,FMCSWDepressionSymptomsScreener,FMCAKIComprehensiveSW,FMCSWIntensiveScreener,FMCESRDComprehensiveSW,FMCNutritionProgressNote,FMCAKIComprehensiveRN");
+		assertInMemory("EpisodeOfCare?status=active");
+		assertInMemory("Observation?code=111111111&_format=xml");
+		assertInMemory("Observation?code=SNOMED-CT|123&_format=xml");
+
+		assertDatabase("Observation?code=17861-6&context.type=IHD");
+		assertDatabase("Observation?context.type=IHD&code=17861-6");
+
+		exception.expect(InvalidRequestException.class);
+		exception.expectMessage(containsString("Resource type Observation does not have a parameter with name: codeee"));
+		assertInMemory("Observation?codeee=SNOMED-CT|123&_format=xml");
+	}
+
+	private void assertDatabase(String theCriteria) {
+		assertEquals(SubscriptionMatchingStrategy.DATABASE, mySubscriptionStrategyEvaluator.determineStrategy(theCriteria));
+	}
+
+	private void assertInMemory(String theCriteria) {
+		assertEquals(SubscriptionMatchingStrategy.IN_MEMORY, mySubscriptionStrategyEvaluator.determineStrategy(theCriteria));
+	}
+}
+

src/changes/changes.xml

@@ -327,6 +327,12 @@
 				The casing of the base64Binary datatype was incorrect in the DSTU3 and R4 model classes.
 				This has been corrected.
 			</action>
+			<action type="add">
+				Add a "subscription-matching-strategy" meta tag to incoming subscriptions with value of IN_MEMORY
+				or DATABASE indicating whether the subscription can be matched against new resources in-memory or
+				whether a call out to the database may be required.  I say "may" because subscription matches fail fast
+				so a negative match may be performed in-memory, but a positive match will require a database call.
+			</action>
 		</release>
 		<release version="3.6.0" date="2018-11-12" description="Food">
 			<action type="add">