Don't update modified time when performing NOOP update in JPA

hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/dao/BaseHapiFhirDao.java

@@ -1319,17 +1319,18 @@ public abstract class BaseHapiFhirDao<T extends IBaseResource> implements IDao,
 				mySearchParamWithInlineReferencesExtractor.populateFromResource(newParams, this, theUpdateTime, theEntity, theResource, existingParams);
 
 				changed = populateResourceIntoEntity(theRequest, theResource, theEntity, true);
+				if (changed.isChanged()) {
+					theEntity.setUpdated(theUpdateTime);
+					if (theResource instanceof IResource) {
+						theEntity.setLanguage(((IResource) theResource).getLanguage().getValue());
+					} else {
+						theEntity.setLanguage(((IAnyResource) theResource).getLanguageElement().getValue());
+					}
 
-				theEntity.setUpdated(theUpdateTime);
+					newParams.setParamsOn(theEntity);
-				if (theResource instanceof IResource) {
+					theEntity.setIndexStatus(INDEX_STATUS_INDEXED);
-					theEntity.setLanguage(((IResource) theResource).getLanguage().getValue());
+					populateFullTextFields(myContext, theResource, theEntity);
-				} else {
-					theEntity.setLanguage(((IAnyResource) theResource).getLanguageElement().getValue());
 				}
-
-				newParams.setParamsOn(theEntity);
-				theEntity.setIndexStatus(INDEX_STATUS_INDEXED);
-				populateFullTextFields(myContext, theResource, theEntity);
 			} else {
 
 				changed = populateResourceIntoEntity(theRequest, theResource, theEntity, false);

hapi-fhir-jpaserver-base/src/main/java/ca/uhn/fhir/jpa/util/CircularQueueCaptureQueriesListener.java

@@ -144,6 +144,17 @@ public class CircularQueueCaptureQueriesListener extends BaseCaptureQueriesListe
 		return getQueriesForCurrentThreadStartingWith("delete");
 	}
 
+	/**
+	 * Log all captured UPDATE queries
+	 */
+	public void logUpdateQueriesForCurrentThread() {
+		List<String> queries = getUpdateQueriesForCurrentThread()
+			.stream()
+			.map(CircularQueueCaptureQueriesListener::formatQueryAsSql)
+			.collect(Collectors.toList());
+		ourLog.info("Select Queries:\n{}", String.join("\n", queries));
+	}
+
 	/**
 	 * Log all captured SELECT queries
 	 */

hapi-fhir-jpaserver-base/src/test/java/ca/uhn/fhir/jpa/config/TestR4Config.java

@@ -4,6 +4,7 @@ import ca.uhn.fhir.jpa.util.CircularQueueCaptureQueriesListener;
 import ca.uhn.fhir.rest.server.interceptor.RequestValidatingInterceptor;
 import ca.uhn.fhir.validation.ResultSeverityEnum;
 import net.ttddyy.dsproxy.listener.SingleQueryCountHolder;
+import net.ttddyy.dsproxy.listener.logging.SLF4JLogLevel;
 import net.ttddyy.dsproxy.support.ProxyDataSourceBuilder;
 import org.apache.commons.dbcp2.BasicDataSource;
 import org.springframework.context.annotation.Bean;
@@ -102,7 +103,7 @@ public class TestR4Config extends BaseJavaConfigR4 {
 
 		DataSource dataSource = ProxyDataSourceBuilder
 			.create(retVal)
-//			.logQueryBySlf4j(SLF4JLogLevel.INFO, "SQL")
+			.logQueryBySlf4j(SLF4JLogLevel.INFO, "SQL")
 //			.logSlowQueryBySlf4j(10, TimeUnit.SECONDS)
 //			.countQuery(new ThreadQueryCountHolder())
 			.beforeQuery(new BlockLargeNumbersOfParamsListener())

hapi-fhir-jpaserver-base/src/test/java/ca/uhn/fhir/jpa/dao/r4/FhirResourceDaoR4UpdateTest.java

@@ -1,6 +1,8 @@
 package ca.uhn.fhir.jpa.dao.r4;
 
 import ca.uhn.fhir.jpa.dao.DaoConfig;
+import ca.uhn.fhir.jpa.model.entity.ResourceHistoryTable;
+import ca.uhn.fhir.jpa.model.entity.ResourceTable;
 import ca.uhn.fhir.jpa.searchparam.SearchParameterMap;
 import ca.uhn.fhir.jpa.util.TestUtil;
 import ca.uhn.fhir.model.primitive.InstantDt;
@@ -85,6 +87,58 @@ public class FhirResourceDaoR4UpdateTest extends BaseJpaR4Test {
 
 	}
 
+
+	@Test
+	public void testUpdateNotModifiedDoesNotAffectDates() {
+		IIdType id = runInTransaction(() -> {
+			Patient p = new Patient();
+			p.addIdentifier().setSystem("urn:system").setValue("2");
+			return myPatientDao.create(p).getId().toUnqualified();
+		});
+
+		String createTime = runInTransaction(()->{
+			List<ResourceTable> allResources = myResourceTableDao.findAll();
+			assertEquals(1, allResources.size());
+			ResourceTable resourceTable = allResources.get(0);
+
+			List<ResourceHistoryTable> allHistory = myResourceHistoryTableDao.findAll();
+			assertEquals(1, allHistory.size());
+			ResourceHistoryTable historyTable = allHistory.get(0);
+
+			assertEquals(resourceTable.getUpdated().getValueAsString(), historyTable.getUpdated().getValueAsString());
+			return resourceTable.getUpdated().getValueAsString();
+		});
+
+		myCaptureQueriesListener.clear();
+		runInTransaction(()->{
+			Patient p = new Patient();
+			p.setId(id.getIdPart());
+			p.addIdentifier().setSystem("urn:system").setValue("2");
+			myPatientDao.update(p);
+		});
+		myCaptureQueriesListener.logSelectQueriesForCurrentThread();
+		// TODO: it'd be nice if this was lower
+		assertEquals(6, myCaptureQueriesListener.getSelectQueriesForCurrentThread().size());
+		myCaptureQueriesListener.logUpdateQueriesForCurrentThread();
+		assertEquals(0, myCaptureQueriesListener.getUpdateQueriesForCurrentThread().size());
+		assertThat(myCaptureQueriesListener.getInsertQueriesForCurrentThread(), empty());
+		assertThat(myCaptureQueriesListener.getDeleteQueriesForCurrentThread(), empty());
+
+		runInTransaction(()->{
+			List<ResourceTable> allResources = myResourceTableDao.findAll();
+			assertEquals(1, allResources.size());
+			ResourceTable resourceTable = allResources.get(0);
+
+			List<ResourceHistoryTable> allHistory = myResourceHistoryTableDao.findAll();
+			assertEquals(1, allHistory.size());
+			ResourceHistoryTable historyTable = allHistory.get(0);
+
+			assertEquals(createTime, historyTable.getUpdated().getValueAsString());
+			assertEquals(createTime, resourceTable.getUpdated().getValueAsString());
+		});
+
+	}
+
 	@Test
 	public void testDuplicateProfilesIgnored() {
 		String name = "testDuplicateProfilesIgnored";

src/changes/changes.xml

@@ -132,6 +132,11 @@
 				The second bug is that one case wasn't properly handled: when a resourceId with no version is provided.
 				This executed the case where only resource type is provided.
 			</action>
+			<action type="fix">
+				When updating a resource in the JPA server, if the contents have not actually changed
+				the resource version is not updated and no new version is created. In this situation,
+				the update time was modified however. It will no longer be updated.
+			</action>
 		</release>
 		<release version="3.7.0" date="2019-02-06" description="Gale">
 			<action type="add">