Port to jdk17 and spring 3.0.0 (#1279)

This also allows support of repository methods that return a simple type.
i.e.
@ScanConsistency(query = QueryScanConsistency.REQUEST_PLUS)
@Query("SELECT iata, \"\" as __id, 0 as __cas from #{#n1ql.bucket} WHERE #{#n1ql.filter}")
List<String> getStrings();

Closes #1278.

pom.xml

@@ -1,11 +1,12 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>org.springframework.data</groupId>
     <artifactId>spring-data-couchbase</artifactId>
-    <version>4.3.0-SNAPSHOT</version>
+    <version>5.0.0-SNAPSHOT</version>
 
     <name>Spring Data Couchbase</name>
     <description>Spring Data integration for Couchbase</description>
@@ -14,14 +15,17 @@
     <parent>
         <groupId>org.springframework.data.build</groupId>
         <artifactId>spring-data-parent</artifactId>
-        <version>2.6.0-SNAPSHOT</version>
+        <version>3.0.0-SNAPSHOT</version>
     </parent>
 
     <properties>
-        <couchbase>3.2.1</couchbase>
+        <couchbase>3.2.3</couchbase>
-        <couchbase.osgi>3.2.1</couchbase.osgi>
+        <couchbase.osgi>3.2.3</couchbase.osgi>
-        <springdata.commons>2.6.0-SNAPSHOT</springdata.commons>
+        <springdata.commons>3.0.0-SNAPSHOT</springdata.commons>
         <java-module-name>spring.data.couchbase</java-module-name>
+        <jodatime>2.10.13</jodatime>
+        <jakarta.validation>3.0.1</jakarta.validation>
+        <hibernate.validator>7.0.1.Final</hibernate.validator>
     </properties>
 
     <dependencyManagement>
@@ -64,6 +68,13 @@
             <version>${couchbase}</version>
         </dependency>
 
+        <!-- CDI -->
+        <dependency>
+            <groupId>jakarta.enterprise</groupId>
+            <artifactId>jakarta.enterprise.cdi-api</artifactId>
+            <version>3.0.0</version>
+        </dependency>
+
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-test</artifactId>
@@ -72,9 +83,9 @@
         </dependency>
 
         <dependency>
-            <groupId>org.hibernate</groupId>
+            <groupId>org.hibernate.validator</groupId>
             <artifactId>hibernate-validator</artifactId>
-            <version>5.3.6.Final</version>
+            <version>7.0.1.Final</version>
             <scope>test</scope>
         </dependency>
 
@@ -112,24 +123,25 @@
 
         <!-- JSR 303 Validation -->
         <dependency>
-            <groupId>javax.validation</groupId>
+            <groupId>jakarta.validation</groupId>
-            <artifactId>validation-api</artifactId>
+            <artifactId>jakarta.validation-api</artifactId>
             <version>${validation}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>jakarta.el</groupId>
+            <artifactId>jakarta.el-api</artifactId>
+            <version>4.0.0</version>
+            <scope>provided</scope>
             <optional>true</optional>
         </dependency>
 
-        <dependency>
-            <groupId>javax.el</groupId>
-            <artifactId>javax.el-api</artifactId>
-            <version>3.0.0</version>
-            <scope>test</scope>
-        </dependency>
-
         <dependency>
             <groupId>org.glassfish</groupId>
-            <artifactId>javax.el</artifactId>
+            <artifactId>jakarta.el</artifactId>
-            <version>3.0.0</version>
+            <version>4.0.2</version>
-            <scope>test</scope>
+            <scope>provided</scope>
+            <optional>true</optional>
         </dependency>
 
         <!-- CDI -->
@@ -148,21 +160,6 @@
             <scope>test</scope>
         </dependency>
 
-        <dependency>
-            <groupId>javax.enterprise</groupId>
-            <artifactId>cdi-api</artifactId>
-            <version>${cdi}</version>
-            <scope>provided</scope>
-            <optional>true</optional>
-        </dependency>
-
-        <dependency>
-            <groupId>javax.annotation</groupId>
-            <artifactId>javax.annotation-api</artifactId>
-            <version>${javax-annotation-api}</version>
-            <scope>test</scope>
-        </dependency>
-
         <dependency>
             <groupId>org.apache.openwebbeans</groupId>
             <artifactId>openwebbeans-se</artifactId>
@@ -279,17 +276,6 @@
                     </execution>
                 </executions>
             </plugin>
-            <plugin>
-              <groupId>org.apache.maven.plugins</groupId>
-              <artifactId>maven-jar-plugin</artifactId>
-              <configuration>
-                <archive>
-                  <manifestEntries>
-                    <Automatic-Module-Name>${java-module-name}</Automatic-Module-Name>
-                  </manifestEntries>
-                </archive>
-              </configuration>
-            </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-assembly-plugin</artifactId>

src/main/java/org/springframework/data/couchbase/core/CouchbaseTemplateSupport.java

@@ -17,6 +17,10 @@
 
 package org.springframework.data.couchbase.core;
 
+import java.lang.reflect.InaccessibleObjectException;
+import java.util.Map;
+import java.util.Set;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.BeansException;
@@ -40,6 +44,7 @@ import org.springframework.data.mapping.callback.EntityCallbacks;
 import org.springframework.data.mapping.context.MappingContext;
 import org.springframework.data.mapping.model.ConvertingPropertyAccessor;
 import org.springframework.util.Assert;
+import org.springframework.util.ClassUtils;
 
 /**
  * Internal encode/decode support for CouchbaseTemplate.
@@ -84,7 +89,18 @@ class CouchbaseTemplateSupport implements ApplicationContextAware, TemplateSuppo
 	public <T> T decodeEntity(String id, String source, long cas, Class<T> entityClass) {
 		final CouchbaseDocument converted = new CouchbaseDocument(id);
 		converted.setId(id);
-		CouchbasePersistentEntity<?> persistentEntity = mappingContext.getRequiredPersistentEntity(entityClass);
+		CouchbasePersistentEntity persistentEntity = couldBePersistentEntity(entityClass);
+
+		if (persistentEntity == null) { // method could return a Long, Boolean, String etc.
+			// QueryExecutionConverters.unwrapWrapperTypes will recursively unwrap until there is nothing left
+			// to unwrap. This results in List<String[]> being unwrapped past String[] to String, so this may also be a
+			// Collection (or Array) of entityClass. We have no way of knowing - so just assume it is what we are told.
+			// if this is a Collection or array, only the first element will be returned.
+			Set<Map.Entry<String, Object>> set = ((CouchbaseDocument) translationService.decode(source, converted))
+					.getContent().entrySet();
+			return (T) set.iterator().next().getValue();
+		}
+
 		if (cas != 0 && persistentEntity.getVersionProperty() != null) {
 			converted.put(persistentEntity.getVersionProperty().getName(), cas);
 		}
@@ -98,6 +114,17 @@ class CouchbaseTemplateSupport implements ApplicationContextAware, TemplateSuppo
 		N1qlJoinResolver.handleProperties(persistentEntity, accessor, template.reactive(), id);
 		return accessor.getBean();
 	}
+	CouchbasePersistentEntity couldBePersistentEntity(Class<?> entityClass) {
+		if (ClassUtils.isPrimitiveOrWrapper(entityClass) || entityClass == String.class) {
+			return null;
+		}
+		try {
+			return mappingContext.getPersistentEntity(entityClass);
+		} catch (InaccessibleObjectException t) {
+
+		}
+		return null;
+	}
 
 	@Override
 	public Object applyUpdatedCas(final Object entity, CouchbaseDocument converted, final long cas) {

src/main/java/org/springframework/data/couchbase/core/ReactiveCouchbaseTemplateSupport.java

@@ -18,6 +18,10 @@ package org.springframework.data.couchbase.core;
 
 import reactor.core.publisher.Mono;
 
+import java.lang.reflect.InaccessibleObjectException;
+import java.util.Map;
+import java.util.Set;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.BeansException;
@@ -42,6 +46,7 @@ import org.springframework.data.mapping.callback.ReactiveEntityCallbacks;
 import org.springframework.data.mapping.context.MappingContext;
 import org.springframework.data.mapping.model.ConvertingPropertyAccessor;
 import org.springframework.util.Assert;
+import org.springframework.util.ClassUtils;
 
 /**
  * Internal encode/decode support for {@link ReactiveCouchbaseTemplate}.
@@ -84,7 +89,19 @@ class ReactiveCouchbaseTemplateSupport implements ApplicationContextAware, React
 		return Mono.fromSupplier(() -> {
 			final CouchbaseDocument converted = new CouchbaseDocument(id);
 			converted.setId(id);
-			CouchbasePersistentEntity<?> persistentEntity = mappingContext.getRequiredPersistentEntity(entityClass);
+
+			CouchbasePersistentEntity persistentEntity = couldBePersistentEntity(entityClass);
+
+			if (persistentEntity == null) { // method could return a Long, Boolean, String etc.
+				// QueryExecutionConverters.unwrapWrapperTypes will recursively unwrap until there is nothing left
+				// to unwrap. This results in List<String[]> being unwrapped past String[] to String, so this may also be a
+				// Collection (or Array) of entityClass. We have no way of knowing - so just assume it is what we are told.
+				// if this is a Collection or array, only the first element will be returned.
+				Set<Map.Entry<String, Object>> set = ((CouchbaseDocument) translationService.decode(source, converted))
+						.getContent().entrySet();
+				return (T) set.iterator().next().getValue();
+			}
+
 			if (cas != 0 && persistentEntity.getVersionProperty() != null) {
 				converted.put(persistentEntity.getVersionProperty().getName(), cas);
 			}
@@ -100,6 +117,18 @@ class ReactiveCouchbaseTemplateSupport implements ApplicationContextAware, React
 		});
 	}
 
+	CouchbasePersistentEntity couldBePersistentEntity(Class<?> entityClass) {
+		if (ClassUtils.isPrimitiveOrWrapper(entityClass) || entityClass == String.class) {
+			return null;
+		}
+		try {
+			return mappingContext.getPersistentEntity(entityClass);
+		} catch (InaccessibleObjectException t) {
+
+		}
+		return null;
+	}
+
 	@Override
 	public Mono<Object> applyUpdatedCas(final Object entity, CouchbaseDocument converted, final long cas) {
 		return Mono.fromSupplier(() -> {

src/main/java/org/springframework/data/couchbase/core/convert/AbstractCouchbaseConverter.java

@@ -22,7 +22,7 @@ import org.springframework.beans.factory.InitializingBean;
 import org.springframework.core.convert.ConversionService;
 import org.springframework.core.convert.support.GenericConversionService;
 import org.springframework.data.convert.CustomConversions;
-import org.springframework.data.convert.EntityInstantiators;
+import org.springframework.data.mapping.model.EntityInstantiators;
 
 /**
  * An abstract {@link CouchbaseConverter} that provides the basics for the {@link MappingCouchbaseConverter}.

src/main/java/org/springframework/data/couchbase/core/convert/CouchbaseJsr310Converters.java

@@ -27,6 +27,7 @@ import java.time.LocalDateTime;
 import java.time.LocalTime;
 import java.time.Period;
 import java.time.ZoneId;
+import java.time.ZonedDateTime;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Date;
@@ -71,6 +72,9 @@ public final class CouchbaseJsr310Converters {
 		converters.add(StringToDurationConverter.INSTANCE);
 		converters.add(PeriodToStringConverter.INSTANCE);
 		converters.add(StringToPeriodConverter.INSTANCE);
+		converters.add(ZonedDateTimeToLongConverter.INSTANCE);
+		converters.add(NumberToZonedDateTimeConverter.INSTANCE);
+
 		return converters;
 	}
 
@@ -99,6 +103,31 @@ public final class CouchbaseJsr310Converters {
 		}
 	}
 
+	@ReadingConverter
+	public enum NumberToZonedDateTimeConverter implements Converter<Number, ZonedDateTime> {
+
+		INSTANCE;
+
+		@Override
+		public ZonedDateTime convert(Number source) {
+			return source == null ? null
+					: ZonedDateTime.ofInstant(DateConverters.SerializedObjectToDateConverter.INSTANCE.convert(source).toInstant(),
+					systemDefault());
+		}
+	}
+
+	@WritingConverter
+	public enum ZonedDateTimeToLongConverter implements Converter<ZonedDateTime, Long> {
+
+		INSTANCE;
+
+		@Override
+		public Long convert(ZonedDateTime source) {
+			return source == null ? null
+					: DateConverters.DateToLongConverter.INSTANCE.convert(Date.from(source.toInstant()));
+		}
+	}
+
 	@ReadingConverter
 	public enum NumberToLocalDateConverter implements Converter<Number, LocalDate> {
 

src/main/java/org/springframework/data/couchbase/core/convert/MappingCouchbaseConverter.java

@@ -36,7 +36,6 @@ import org.springframework.core.convert.ConversionService;
 import org.springframework.core.convert.support.DefaultConversionService;
 import org.springframework.data.annotation.Transient;
 import org.springframework.data.convert.CustomConversions;
-import org.springframework.data.convert.EntityInstantiator;
 import org.springframework.data.couchbase.core.mapping.CouchbaseDocument;
 import org.springframework.data.couchbase.core.mapping.CouchbaseList;
 import org.springframework.data.couchbase.core.mapping.CouchbaseMappingContext;
@@ -60,6 +59,7 @@ import org.springframework.data.mapping.callback.EntityCallbacks;
 import org.springframework.data.mapping.context.MappingContext;
 import org.springframework.data.mapping.model.ConvertingPropertyAccessor;
 import org.springframework.data.mapping.model.DefaultSpELExpressionEvaluator;
+import org.springframework.data.mapping.model.EntityInstantiator;
 import org.springframework.data.mapping.model.ParameterValueProvider;
 import org.springframework.data.mapping.model.PersistentEntityParameterValueProvider;
 import org.springframework.data.mapping.model.PropertyValueProvider;

src/main/java/org/springframework/data/couchbase/core/mapping/event/ValidatingCouchbaseEventListener.java

@@ -18,13 +18,13 @@ package org.springframework.data.couchbase.core.mapping.event;
 
 import java.util.Set;
 
-import javax.validation.ConstraintViolationException;
-import javax.validation.Validator;
 
+import jakarta.validation.ConstraintViolationException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.data.couchbase.core.mapping.CouchbaseDocument;
 import org.springframework.util.Assert;
+import org.springframework.validation.beanvalidation.LocalValidatorFactoryBean;
 
 /**
  * javax.validation dependant entities validator. When it is registered as Spring component its automatically invoked
@@ -38,14 +38,14 @@ public class ValidatingCouchbaseEventListener extends AbstractCouchbaseEventList
 
 	private static final Logger LOG = LoggerFactory.getLogger(ValidatingCouchbaseEventListener.class);
 
-	private final Validator validator;
+	private final LocalValidatorFactoryBean validator;
 
 	/**
 	 * Creates a new {@link ValidatingCouchbaseEventListener} using the given {@link Validator}.
 	 *
 	 * @param validator must not be {@literal null}.
 	 */
-	public ValidatingCouchbaseEventListener(Validator validator) {
+	public ValidatingCouchbaseEventListener(LocalValidatorFactoryBean validator) {
 		Assert.notNull(validator, "Validator must not be null!");
 		this.validator = validator;
 	}

src/main/java/org/springframework/data/couchbase/core/query/QueryCriteria.java

@@ -18,12 +18,15 @@ package org.springframework.data.couchbase.core.query;
 import static org.springframework.data.couchbase.core.query.N1QLExpression.x;
 
 import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
 import java.util.Formatter;
 import java.util.LinkedList;
 import java.util.List;
 
 import org.springframework.data.couchbase.core.convert.CouchbaseConverter;
 import org.springframework.lang.Nullable;
+import org.springframework.util.CollectionUtils;
 
 import com.couchbase.client.core.error.InvalidArgumentException;
 import com.couchbase.client.java.json.JsonArray;
@@ -278,18 +281,30 @@ public class QueryCriteria implements QueryCriteriaDefinition {
 
 	public QueryCriteria in(@Nullable Object... o) {
 		operator = "IN";
-		format = "%1$s in ( %3$s )";
+		format = "%1$s in ( ";
-		// IN takes a single argument that is a list
 		if (o.length > 0) {
 			if (o[0] instanceof JsonArray || o[0] instanceof List || o[0] instanceof Object[]) {
 				if (o.length != 1) {
 					throw new RuntimeException("IN cannot take multiple lists");
 				}
-				value = o;
+				if (o[0] instanceof Object[]) {
+					value = (Object[]) o[0];
+				} else if (o[0] instanceof JsonArray) {
+					JsonArray ja = ((JsonArray) o[0]);
+					value = ja.toList().toArray();
+				} else if (o[0] instanceof List) {
+					List l = ((List) o[0]);
+					value = l.toArray();
+				}
 			} else {
-				value = new Object[1];
+				value = o;
-				value[0] = o; // JsonArray.from(o);
 			}
+			for (int i = 0; i < value.length; i++) {
+				if (i > 0)
+					format = format + ", ";
+				format = format + "%" + (i + 3) + "$s";
+			}
+			format = format + " )";
 		}
 		return this;
 	}
@@ -409,15 +424,13 @@ public class QueryCriteria implements QueryCriteriaDefinition {
 			if (paramIndexPtr[0] >= 0) {
 				JsonArray params = (JsonArray) parameters;
 				// from StringBasedN1qlQueryParser.getPositionalPlaceholderValues()
-				try {
+
+				if (value instanceof Object[] || value instanceof Collection) {
+					addAsCollection(params, asCollection(value), converter);
+				} else {
 					params.add(convert(converter, value));
-				} catch (InvalidArgumentException iae) {
-					if (value instanceof Object[]) {
-						addAsArray(params, value, converter);
-					} else {
-						throw iae;
-					}
 				}
+
 				return "$" + (++paramIndexPtr[0]); // these are generated in order
 			} else {
 				JsonObject params = (JsonObject) parameters;
@@ -462,15 +475,27 @@ public class QueryCriteria implements QueryCriteriaDefinition {
 		return converter != null ? converter.convertForWriteIfNeeded(value) : value;
 	}
 
-	private void addAsArray(JsonArray posValues, Object o, CouchbaseConverter converter) {
+	private void addAsCollection(JsonArray posValues, Collection collection, CouchbaseConverter converter) {
-		Object[] array = (Object[]) o;
 		JsonArray ja = JsonValue.ja();
-		for (Object e : array) {
+		for (Object e : collection) {
 			ja.add(String.valueOf(convert(converter, e)));
 		}
 		posValues.add(ja);
 	}
 
+	/**
+	 * Returns a collection from the given source object. From MappingCouchbaseConverter.
+	 *
+	 * @param source the source object.
+	 * @return the target collection.
+	 */
+	private static Collection<?> asCollection(final Object source) {
+		if (source instanceof Collection) {
+			return (Collection<?>) source;
+		}
+		return source.getClass().isArray() ? CollectionUtils.arrayToList(source) : Collections.singleton(source);
+	}
+
 	private String maybeBackTic(String value) {
 		if (value == null || (value.startsWith("`") && value.endsWith("`"))) {
 			return value;

src/main/java/org/springframework/data/couchbase/repository/auditing/CouchbaseAuditingRegistrar.java

@@ -19,6 +19,7 @@ package org.springframework.data.couchbase.repository.auditing;
 import java.lang.annotation.Annotation;
 
 import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.beans.factory.support.AbstractBeanDefinition;
 import org.springframework.beans.factory.support.BeanDefinitionBuilder;
 import org.springframework.beans.factory.support.BeanDefinitionRegistry;
 import org.springframework.beans.factory.support.RootBeanDefinition;
@@ -70,7 +71,11 @@ public class CouchbaseAuditingRegistrar extends AuditingBeanDefinitionRegistrarS
 		Assert.notNull(configuration, "AuditingConfiguration must not be null!");
 
 		BeanDefinitionBuilder builder = BeanDefinitionBuilder.rootBeanDefinition(IsNewAwareAuditingHandler.class);
-		builder.addConstructorArgReference(BeanNames.COUCHBASE_MAPPING_CONTEXT);
+
+		BeanDefinitionBuilder definition = BeanDefinitionBuilder.genericBeanDefinition(PersistentEntitiesFactoryBean.class);
+		definition.setAutowireMode(AbstractBeanDefinition.AUTOWIRE_CONSTRUCTOR);
+
+		builder.addConstructorArgValue(definition.getBeanDefinition());
 		return configureDefaultAuditHandlerAttributes(configuration, builder);
 	}
 

src/main/java/org/springframework/data/couchbase/repository/cdi/CouchbaseRepositoryBean.java

@@ -15,14 +15,13 @@
  */
 package org.springframework.data.couchbase.repository.cdi;
 
+import jakarta.enterprise.inject.spi.Bean;
+import jakarta.enterprise.inject.spi.BeanManager;
+
 import java.lang.annotation.Annotation;
 import java.util.Optional;
 import java.util.Set;
 
-import javax.enterprise.context.spi.CreationalContext;
-import javax.enterprise.inject.spi.Bean;
-import javax.enterprise.inject.spi.BeanManager;
-
 import org.springframework.data.couchbase.core.CouchbaseOperations;
 import org.springframework.data.couchbase.repository.config.RepositoryOperationsMapping;
 import org.springframework.data.couchbase.repository.support.CouchbaseRepositoryFactory;
@@ -63,8 +62,7 @@ public class CouchbaseRepositoryBean<T> extends CdiRepositoryBean<T> {
 	 * @see org.springframework.data.repository.cdi.CdiRepositoryBean#create(javax.enterprise.context.spi.CreationalContext, java.lang.Class)
 	*/
 	@Override
-	protected T create(CreationalContext<T> creationalContext, Class<T> repositoryType) {
+	protected T create(jakarta.enterprise.context.spi.CreationalContext<T> creationalContext, Class<T> repositoryType) {
-
 		CouchbaseOperations couchbaseOperations = getDependencyInstance(couchbaseOperationsBean, CouchbaseOperations.class);
 		RepositoryOperationsMapping couchbaseOperationsMapping = new RepositoryOperationsMapping(couchbaseOperations);
 
@@ -75,4 +73,5 @@ public class CouchbaseRepositoryBean<T> extends CdiRepositoryBean<T> {
 	public Class<? extends Annotation> getScope() {
 		return couchbaseOperationsBean.getScope();
 	}
+
 }

src/main/java/org/springframework/data/couchbase/repository/cdi/CouchbaseRepositoryExtension.java

@@ -22,13 +22,12 @@ import java.util.HashMap;
 import java.util.Map;
 import java.util.Set;
 
-import javax.enterprise.event.Observes;
+import jakarta.enterprise.event.Observes;
-import javax.enterprise.inject.UnsatisfiedResolutionException;
+import jakarta.enterprise.inject.UnsatisfiedResolutionException;
-import javax.enterprise.inject.spi.AfterBeanDiscovery;
+import jakarta.enterprise.inject.spi.AfterBeanDiscovery;
-import javax.enterprise.inject.spi.Bean;
+import jakarta.enterprise.inject.spi.Bean;
-import javax.enterprise.inject.spi.BeanManager;
+import jakarta.enterprise.inject.spi.BeanManager;
-import javax.enterprise.inject.spi.ProcessBean;
+import jakarta.enterprise.inject.spi.ProcessBean;
-
 import org.springframework.data.couchbase.core.CouchbaseOperations;
 import org.springframework.data.repository.cdi.CdiRepositoryBean;
 import org.springframework.data.repository.cdi.CdiRepositoryExtensionSupport;
@@ -67,6 +66,7 @@ public class CouchbaseRepositoryExtension extends CdiRepositoryExtensionSupport
 	 *
 	 * @param beanManager The BeanManager instance.
 	 */
+
 	void afterBeanDiscovery(@Observes AfterBeanDiscovery afterBeanDiscovery, BeanManager beanManager) {
 		for (Map.Entry<Class<?>, Set<Annotation>> entry : getRepositoryTypes()) {
 

src/main/java/org/springframework/data/couchbase/repository/query/CouchbaseQueryExecution.java

@@ -26,7 +26,7 @@ import org.springframework.data.domain.Pageable;
 import org.springframework.data.domain.Slice;
 import org.springframework.data.domain.SliceImpl;
 import org.springframework.data.repository.query.QueryMethod;
-import org.springframework.data.repository.support.PageableExecutionUtils;
+import org.springframework.data.support.PageableExecutionUtils;
 import org.springframework.util.Assert;
 
 /**

src/main/java/org/springframework/data/couchbase/repository/query/N1qlCountQueryCreator.java

@@ -58,10 +58,6 @@ public class N1qlCountQueryCreator extends OldN1qlQueryCreator {
 			return Sort.unsorted();
 		}
 
-		public Optional<Class<?>> getDynamicProjection() {
-			return delegate.getDynamicProjection();
-		}
-
 		@Override
 		public Class<?> findDynamicProjection() {
 			return delegate.findDynamicProjection();

src/main/java/org/springframework/data/couchbase/repository/query/N1qlQueryCreator.java

@@ -69,7 +69,7 @@ public class N1qlQueryCreator extends AbstractQueryCreator<Query, QueryCriteria>
 		this.queryMethod = queryMethod;
 		this.converter = converter;
 		this.bucketName = bucketName;
-		this.entity = converter.getMappingContext().getPersistentEntity(queryMethod.getReturnedObjectType());
+		this.entity = converter.getMappingContext().getPersistentEntity(queryMethod.getEntityInformation().getJavaType());
 	}
 
 	@Override

src/main/java/org/springframework/data/couchbase/repository/query/StringBasedN1qlQueryParser.java

@@ -33,6 +33,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.data.couchbase.core.convert.CouchbaseConverter;
 import org.springframework.data.couchbase.core.mapping.CouchbasePersistentProperty;
+import org.springframework.data.couchbase.core.mapping.Expiration;
 import org.springframework.data.couchbase.core.query.N1QLExpression;
 import org.springframework.data.couchbase.repository.Query;
 import org.springframework.data.couchbase.repository.query.support.N1qlUtils;
@@ -44,7 +45,6 @@ import org.springframework.data.repository.query.Parameter;
 import org.springframework.data.repository.query.ParameterAccessor;
 import org.springframework.data.repository.query.QueryMethodEvaluationContextProvider;
 import org.springframework.data.repository.query.ReturnedType;
-import org.springframework.data.util.TypeInformation;
 import org.springframework.expression.EvaluationContext;
 import org.springframework.expression.common.TemplateParserContext;
 import org.springframework.expression.spel.standard.SpelExpressionParser;
@@ -130,10 +130,11 @@ public class StringBasedN1qlQueryParser {
 		this.queryMethod = queryMethod;
 		this.couchbaseConverter = couchbaseConverter;
 		String collection = queryMethod.getCollection();
-		this.statementContext = createN1qlSpelValues(bucketName, collection, null, null, typeField, typeValue, false, null,
+		this.statementContext = createN1qlSpelValues(bucketName, collection,
-				null);
+				queryMethod.getEntityInformation().getJavaType(), queryMethod.getReturnedObjectType(), typeField, typeValue,
-		this.countContext = createN1qlSpelValues(bucketName, collection, null, null, typeField, typeValue, true, null,
+				false, null, null);
-				null);
+		this.countContext = createN1qlSpelValues(bucketName, collection, queryMethod.getEntityInformation().getJavaType(),
+				queryMethod.getReturnedObjectType(), typeField, typeValue, true, null, null);
 		this.parsedExpression = getExpression(accessor, getParameters(accessor), null, parser, evaluationContextProvider);
 		checkPlaceholders(this.parsedExpression.toString());
 	}
@@ -161,12 +162,11 @@ public class StringBasedN1qlQueryParser {
 		String b = collection != null ? collection : bucketName;
 		Assert.isTrue(!(distinctFields != null && fields != null),
 				"only one of project(fields) and distinct(distinctFields) can be specified");
-		String projectedFields = getProjectedFields(b, resultClass, fields);
 		String entity = "META(" + i(b) + ").id AS " + SELECT_ID + ", META(" + i(b) + ").cas AS " + SELECT_CAS;
 		String count = "COUNT(*) AS " + CountFragment.COUNT_ALIAS;
 		String selectEntity;
 		if (distinctFields != null) {
-			String distinctFieldsStr = distinctFields.length == 0 ? projectedFields : getDistinctFields(distinctFields);
+			String distinctFieldsStr = getProjectedOrDistinctFields(b, domainClass, fields, distinctFields);
 			if (isCount) {
 				selectEntity = "SELECT COUNT( DISTINCT {" + distinctFieldsStr + "} ) " + CountFragment.COUNT_ALIAS + " FROM "
 						+ i(b);
@@ -176,6 +176,7 @@ public class StringBasedN1qlQueryParser {
 		} else if (isCount) {
 			selectEntity = "SELECT " + count + " FROM " + i(b);
 		} else {
+			String projectedFields = getProjectedOrDistinctFields(b, domainClass, fields, distinctFields);
 			selectEntity = "SELECT " + entity + (!projectedFields.isEmpty() ? ", " : " ") + projectedFields + " FROM " + i(b);
 		}
 		String typeSelection = "`" + typeField + "` = \"" + typeValue + "\"";
@@ -186,65 +187,63 @@ public class StringBasedN1qlQueryParser {
 		return new N1qlSpelValues(selectEntity, entity, b, typeSelection, delete, returning);
 	}
 
-	private String getDistinctFields(String... distinctFields) {
+	private String getProjectedOrDistinctFields(String b, Class resultClass, String[] fields, String[] distinctFields) {
-		return i(distinctFields).toString();
+		if (distinctFields != null && distinctFields.length != 0) {
-	}
+			return i(distinctFields).toString();
-
+		}
-	private String getProjectedFields(String b, Class resultClass, String[] fields) {
-
 		String projectedFields = i(b) + ".*";
 		if (resultClass != null) {
 			PersistentEntity persistentEntity = couchbaseConverter.getMappingContext().getPersistentEntity(resultClass);
 			StringBuilder sb = new StringBuilder();
-			getProjectedFieldsInternal(b, null, sb, persistentEntity.getTypeInformation(), fields/*, ""*/);
+			getProjectedFieldsInternal(b, null, sb, persistentEntity, fields, distinctFields != null);
 			projectedFields = sb.toString();
 		}
 		return projectedFields;
 	}
 
 	private void getProjectedFieldsInternal(String bucketName, CouchbasePersistentProperty parent, StringBuilder sb,
-			TypeInformation resultClass, String[] fields/*, String path*/) {
+			PersistentEntity persistentEntity, String[] fields, boolean forDistinct) {
 
-		if (resultClass != null) {
+		if (persistentEntity != null) {
 			Set<String> fieldList = fields != null ? new HashSet<>(Arrays.asList(fields)) : null;
-			PersistentEntity persistentEntity = couchbaseConverter.getMappingContext().getPersistentEntity(resultClass);
-			// CouchbasePersistentProperty property = path.getLeafProperty();
 
-			persistentEntity.doWithProperties(new PropertyHandler<CouchbasePersistentProperty>() {
+			// do not include the id and cas metadata fields.
-				@Override
-				public void doWithPersistentProperty(final CouchbasePersistentProperty prop) {
-					if (prop == persistentEntity.getIdProperty() && parent == null) {
-						return;
-					}
-					if (prop == persistentEntity.getVersionProperty() && parent == null) {
-						return;
-					}
-					String projectField = null;
 
-					if (fieldList == null || fieldList.contains(prop.getFieldName())) {
+			persistentEntity.doWithProperties((PropertyHandler<CouchbasePersistentProperty>) prop -> {
-						PersistentPropertyPath<CouchbasePersistentProperty> path = couchbaseConverter.getMappingContext()
+				if (prop == persistentEntity.getIdProperty() && parent == null) {
-								.getPersistentPropertyPath(prop.getName(), resultClass.getType());
+					return;
-						projectField = N1qlQueryCreator.addMetaIfRequired(bucketName, path, prop, persistentEntity).toString();
-						if (sb.length() > 0) {
-							sb.append(", ");
-						}
-						sb.append(projectField); // from N1qlQueryCreator
-					}
-
-					if (fieldList != null) {
-						fieldList.remove(prop.getFieldName());
-					}
-					// The current limitation is that only top-level properties can be projected
-					// This traversing of nested data structures would need to replicate the processing done by
-					// MappingCouchbaseConverter. Either the read or write
-					// And the n1ql to project lower-level properties is complex
-
-					// if (!conversions.isSimpleType(prop.getType())) {
-					// getProjectedFieldsInternal(prop, sb, prop.getTypeInformation(), path+prop.getName()+".");
-					// } else {
-
-					// }
 				}
+				if (prop == persistentEntity.getVersionProperty() && parent == null) {
+					return;
+				}
+				// for distinct when no distinctFields were provided, do not include the expiration field.
+				if (forDistinct && prop.findAnnotation(Expiration.class) != null && parent == null) {
+					return;
+				}
+				String projectField = null;
+
+				if (fieldList == null || fieldList.contains(prop.getFieldName())) {
+					PersistentPropertyPath<CouchbasePersistentProperty> path = couchbaseConverter.getMappingContext()
+							.getPersistentPropertyPath(prop.getName(), persistentEntity.getTypeInformation().getType());
+					projectField = N1qlQueryCreator.addMetaIfRequired(bucketName, path, prop, persistentEntity).toString();
+					if (sb.length() > 0) {
+						sb.append(", ");
+					}
+					sb.append(projectField); // from N1qlQueryCreator
+				}
+
+				if (fieldList != null) {
+					fieldList.remove(prop.getFieldName());
+				}
+				// The current limitation is that only top-level properties can be projected
+				// This traversing of nested data structures would need to replicate the processing done by
+				// MappingCouchbaseConverter. Either the read or write
+				// And the n1ql to project lower-level properties is complex
+
+				// if (!conversions.isSimpleType(prop.getType())) {
+				// getProjectedFieldsInternal(prop, sb, prop.getTypeInformation(), path+prop.getName()+".");
+				// } else {
+				// }
 			});
 			// throw an exception if there is an request for a field not in the entity.
 			// needs further discussion as removing a field from an entity could cause this and not necessarily be an error

src/test/java/org/springframework/data/couchbase/core/CouchbaseTemplateQueryCollectionIntegrationTests.java

@@ -349,20 +349,15 @@ class CouchbaseTemplateQueryCollectionIntegrationTests extends CollectionAwareIn
 			assertEquals(7, airports2.size());
 
 			// count( distinct icao )
-			// not currently possible to have multiple fields in COUNT(DISTINCT field1, field2, ... ) due to MB43475
 			Long count1 = reactiveCouchbaseTemplate.findByQuery(Airport.class).distinct(new String[] { "icao" })
 					.as(Airport.class).withConsistency(QueryScanConsistency.REQUEST_PLUS).inCollection(collectionName).count()
 					.block();
 			assertEquals(2, count1);
 
-			// count( distinct (all fields in icaoClass) // which only has one field
+			// count (distinct { iata, icao } )
-			// not currently possible to have multiple fields in COUNT(DISTINCT field1, field2, ... ) due to MB43475
+			Long count2 = reactiveCouchbaseTemplate.findByQuery(Airport.class).distinct(new String[] {"iata", "icao"})
-			Class icaoClass = (new Object() {
-				String icao;
-			}).getClass();
-			long count2 = (long) reactiveCouchbaseTemplate.findByQuery(Airport.class).distinct(new String[] {}).as(icaoClass)
 					.withConsistency(QueryScanConsistency.REQUEST_PLUS).inCollection(collectionName).count().block();
-			assertEquals(2, count2);
+			assertEquals(7, count2);
 
 		} finally {
 			reactiveCouchbaseTemplate.removeById().inCollection(collectionName)

src/test/java/org/springframework/data/couchbase/core/CouchbaseTemplateQueryIntegrationTests.java

@@ -265,15 +265,6 @@ class CouchbaseTemplateQueryIntegrationTests extends JavaIntegrationTests {
 					.as(Airport.class).withConsistency(QueryScanConsistency.REQUEST_PLUS).count();
 			assertEquals(7, count1);
 
-			// count( distinct (all fields in icaoClass)
-			Class icaoClass = (new Object() {
-				String iata;
-				String icao;
-			}).getClass();
-			long count2 = couchbaseTemplate.findByQuery(Airport.class).distinct(new String[] {}).as(icaoClass)
-					.withConsistency(QueryScanConsistency.REQUEST_PLUS).count();
-			assertEquals(7, count2);
-
 		} finally {
 			couchbaseTemplate.removeById()
 					.all(Arrays.stream(iatas).map((iata) -> "airports::" + iata).collect(Collectors.toSet()));
@@ -305,19 +296,14 @@ class CouchbaseTemplateQueryIntegrationTests extends JavaIntegrationTests {
 			assertEquals(7, airports2.size());
 
 			// count( distinct icao )
-			// not currently possible to have multiple fields in COUNT(DISTINCT field1, field2, ... ) due to MB43475
+			Long count1 = reactiveCouchbaseTemplate.findByQuery(Airport.class).distinct(new String[] { "icao" })
-			long count1 = reactiveCouchbaseTemplate.findByQuery(Airport.class).distinct(new String[] { "icao" })
 					.as(Airport.class).withConsistency(QueryScanConsistency.REQUEST_PLUS).count().block();
 			assertEquals(2, count1);
 
-			// count( distinct (all fields in icaoClass) // which only has one field
+			// count( distinct { icao, iata } )
-			// not currently possible to have multiple fields in COUNT(DISTINCT field1, field2, ... ) due to MB43475
+			Long count2 = reactiveCouchbaseTemplate.findByQuery(Airport.class).distinct(new String[] { "icao", "iata" })
-			Class icaoClass = (new Object() {
-				String icao;
-			}).getClass();
-			long count2 = (long) reactiveCouchbaseTemplate.findByQuery(Airport.class).distinct(new String[] {}).as(icaoClass)
 					.withConsistency(QueryScanConsistency.REQUEST_PLUS).count().block();
-			assertEquals(2, count2);
+			assertEquals(7, count2);
 
 		} finally {
 			reactiveCouchbaseTemplate.removeById()

src/test/java/org/springframework/data/couchbase/core/query/QueryCriteriaTests.java

@@ -24,12 +24,12 @@ import static org.springframework.data.couchbase.core.query.N1QLExpression.x;
 import static org.springframework.data.couchbase.core.query.QueryCriteria.where;
 import static org.springframework.data.couchbase.repository.query.support.N1qlUtils.escapedBucket;
 
+import java.util.Arrays;
+
 import org.junit.jupiter.api.Test;
 
 import com.couchbase.client.java.json.JsonArray;
 
-import java.util.Arrays;
-
 /**
  * @author Mauro Monti
  */
@@ -85,8 +85,9 @@ class QueryCriteriaTests {
 	void testNestedNotIn() {
 		QueryCriteria c = where(i("name")).is("Bubba").or(where(i("age")).gt(12).or(i("country")).is("Austria"))
 				.and(where(i("state")).notIn(new String[] { "Alabama", "Florida" }));
-		assertEquals("`name` = \"Bubba\" or (`age` > 12 or `country` = \"Austria\") and "
+		JsonArray parameters = JsonArray.create();
-				+ "(not( (`state` in ( [\"Alabama\",\"Florida\"] )) ))", c.export());
+		assertEquals("`name` = $1 or (`age` > $2 or `country` = $3) and (not( (`state` in ( $4, $5 )) ))",
+				c.export(new int[1], parameters, null));
 	}
 
 	@Test
@@ -224,21 +225,22 @@ class QueryCriteriaTests {
 	@Test
 	void testIn() {
 		String[] args = new String[] { "gump", "davis" };
-		QueryCriteria c = where(i("name")).in((Object)args);
+		QueryCriteria c = where(i("name")).in((Object) args);
-		assertEquals("`name` in ( [\"gump\",\"davis\"] )", c.export());
+		assertEquals("`name` in ( \"gump\", \"davis\" )", c.export());
 		JsonArray parameters = JsonArray.create();
-		assertEquals("`name` in ( $1 )", c.export(new int[1], parameters, null));
+		assertEquals("`name` in ( $1, $2 )", c.export(new int[1], parameters, null));
-		assertEquals(arrayToString(args), parameters.get(0).toString());
+		assertEquals(arrayToString(args), parameters.toString());
 	}
 
 	@Test
 	void testNotIn() {
 		String[] args = new String[] { "gump", "davis" };
-		QueryCriteria c = where(i("name")).notIn((Object)args);
+		QueryCriteria c = where(i("name")).notIn((Object) args);
-		assertEquals("not( (`name` in ( [\"gump\",\"davis\"] )) )", c.export());
+		assertEquals("not( (`name` in ( \"gump\", \"davis\" )) )", c.export());
+		// this tests creating parameters from the args.
 		JsonArray parameters = JsonArray.create();
-		assertEquals("not( (`name` in ( $1 )) )", c.export(new int[1], parameters, null));
+		assertEquals("not( (`name` in ( $1, $2 )) )", c.export(new int[1], parameters, null));
-		assertEquals(arrayToString(args), parameters.get(0).toString());
+		assertEquals(arrayToString(args), parameters.toString());
 	}
 
 	@Test
@@ -261,7 +263,6 @@ class QueryCriteriaTests {
 		assertEquals(" USE KEYS []", expression.keys(Arrays.asList()).toString());
 	}
 
-
 	@Test // https://github.com/spring-projects/spring-data-couchbase/issues/1066
 	void testCriteriaCorrectlyEscapedWhenUsingMetaOnLHS() {
 		final String bucketName = "sample-bucket";

src/test/java/org/springframework/data/couchbase/core/query/ReactiveCouchbaseTemplateQueryCollectionIntegrationTests.java

@@ -344,20 +344,15 @@ class ReactiveCouchbaseTemplateQueryCollectionIntegrationTests extends Collectio
 			assertEquals(7, airports2.size());
 
 			// count( distinct icao )
-			// not currently possible to have multiple fields in COUNT(DISTINCT field1, field2, ... ) due to MB43475
 			Long count1 = reactiveCouchbaseTemplate.findByQuery(Airport.class).distinct(new String[] { "icao" })
 					.as(Airport.class).withConsistency(QueryScanConsistency.REQUEST_PLUS).inCollection(collectionName).count()
 					.block();
 			assertEquals(2, count1);
 
-			// count( distinct (all fields in icaoClass) // which only has one field
+			// count( distinct { iata, icao } )
-			// not currently possible to have multiple fields in COUNT(DISTINCT field1, field2, ... ) due to MB43475
+			Long count2 = reactiveCouchbaseTemplate.findByQuery(Airport.class).distinct(new String[] {"iata","icao"})
-			Class icaoClass = (new Object() {
-				String icao;
-			}).getClass();
-			long count2 = (long) reactiveCouchbaseTemplate.findByQuery(Airport.class).distinct(new String[] {}).as(icaoClass)
 					.withConsistency(QueryScanConsistency.REQUEST_PLUS).inCollection(collectionName).count().block();
-			assertEquals(2, count2);
+			assertEquals(7, count2);
 
 		} finally {
 			reactiveCouchbaseTemplate.removeById().inCollection(collectionName)

src/test/java/org/springframework/data/couchbase/domain/Airport.java

@@ -16,6 +16,7 @@
 
 package org.springframework.data.couchbase.domain;
 
+import jakarta.validation.constraints.Max;
 import org.springframework.data.annotation.CreatedBy;
 import org.springframework.data.annotation.Id;
 import org.springframework.data.annotation.PersistenceConstructor;
@@ -24,8 +25,6 @@ import org.springframework.data.annotation.Version;
 import org.springframework.data.couchbase.core.mapping.Document;
 import org.springframework.data.couchbase.core.mapping.Expiration;
 
-import javax.validation.constraints.Max;
-
 /**
  * Airport entity
  *

src/test/java/org/springframework/data/couchbase/domain/AirportRepository.java

@@ -129,6 +129,18 @@ public interface AirportRepository extends CouchbaseRepository<Airport, String>,
 	@Query("#{#n1ql.selectEntity} WHERE #{#n1ql.filter} AND iata != $1")
 	Page<Airport> getAllByIataNot(String iata, Pageable pageable);
 
+	@ScanConsistency(query = QueryScanConsistency.REQUEST_PLUS)
+	@Query("SELECT iata, \"\" as __id, 0 as __cas from #{#n1ql.bucket} WHERE #{#n1ql.filter} order by meta().id")
+	List<String> getStrings();
+
+	@ScanConsistency(query = QueryScanConsistency.REQUEST_PLUS)
+	@Query("SELECT length(iata), \"\" as __id, 0 as __cas from #{#n1ql.bucket} WHERE #{#n1ql.filter} order by meta().id")
+	List<Long> getLongs();
+
+	@ScanConsistency(query = QueryScanConsistency.REQUEST_PLUS)
+	@Query("SELECT iata, icao, \"\" as __id, 0 as __cas from #{#n1ql.bucket} WHERE #{#n1ql.filter} order by meta().id")
+	List<String[]> getStringArrays();
+
 	@ScanConsistency(query = QueryScanConsistency.REQUEST_PLUS)
 	Optional<Airport> findByIdAndIata(String id, String iata);
 

src/test/java/org/springframework/data/couchbase/repository/CouchbaseRepositoryQueryIntegrationTests.java

@@ -29,6 +29,7 @@ import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.springframework.data.couchbase.config.BeanNames.COUCHBASE_TEMPLATE;
 
+import jakarta.validation.ConstraintViolationException;
 import junit.framework.AssertionFailedError;
 
 import java.lang.reflect.Method;
@@ -45,8 +46,6 @@ import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
 import java.util.stream.Collectors;
 
-import javax.validation.ConstraintViolationException;
-
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.ApplicationContext;
@@ -101,7 +100,6 @@ import com.couchbase.client.core.error.IndexFailureException;
 import com.couchbase.client.java.env.ClusterEnvironment;
 import com.couchbase.client.java.json.JsonArray;
 import com.couchbase.client.java.kv.GetResult;
-import com.couchbase.client.java.kv.MutationState;
 import com.couchbase.client.java.kv.UpsertOptions;
 import com.couchbase.client.java.query.QueryOptions;
 import com.couchbase.client.java.query.QueryScanConsistency;
@@ -317,16 +315,17 @@ public class CouchbaseRepositoryQueryIntegrationTests extends ClusterAwareIntegr
 		ApplicationContext ac = new AnnotationConfigApplicationContext(Config.class);
 		// the Config class has been modified, these need to be loaded again
 		CouchbaseTemplate couchbaseTemplateRP = (CouchbaseTemplate) ac.getBean(COUCHBASE_TEMPLATE);
-		AirportRepositoryScanConsistencyTest airportRepositoryRP = (AirportRepositoryScanConsistencyTest) ac.getBean("airportRepositoryScanConsistencyTest");
+		AirportRepositoryScanConsistencyTest airportRepositoryRP = (AirportRepositoryScanConsistencyTest) ac
+				.getBean("airportRepositoryScanConsistencyTest");
 
 		List<Airport> sizeBeforeTest = airportRepositoryRP.findAll();
 		assertEquals(0, sizeBeforeTest.size());
 
-		Airport vie = new Airport("airports::vie", "vie" , "low9");
+		Airport vie = new Airport("airports::vie", "vie", "low9");
 		Airport saved = airportRepositoryRP.save(vie);
 		List<Airport> allSaved = airportRepositoryRP.findAll();
 		couchbaseTemplate.removeById(Airport.class).one(saved.getId());
-		assertNotEquals(  1, allSaved.size(),"should not have found 1 airport");
+		assertNotEquals(1, allSaved.size(), "should not have found 1 airport");
 	}
 
 	@Test
@@ -334,19 +333,19 @@ public class CouchbaseRepositoryQueryIntegrationTests extends ClusterAwareIntegr
 
 		ApplicationContext ac = new AnnotationConfigApplicationContext(ConfigRequestPlus.class);
 		// the Config class has been modified, these need to be loaded again
-		AirportRepositoryScanConsistencyTest airportRepositoryRP = (AirportRepositoryScanConsistencyTest) ac.getBean("airportRepositoryScanConsistencyTest");
+		AirportRepositoryScanConsistencyTest airportRepositoryRP = (AirportRepositoryScanConsistencyTest) ac
+				.getBean("airportRepositoryScanConsistencyTest");
 
 		List<Airport> sizeBeforeTest = airportRepositoryRP.findAll();
 		assertEquals(0, sizeBeforeTest.size());
 
-		Airport vie = new Airport("airports::vie", "vie" , "low9");
+		Airport vie = new Airport("airports::vie", "vie", "low9");
 		Airport saved = airportRepositoryRP.save(vie);
 		List<Airport> allSaved = airportRepositoryRP.findAll();
 		couchbaseTemplate.removeById(Airport.class).one(saved.getId());
-		assertEquals(  1, allSaved.size(),"should have found 1 airport");
+		assertEquals(1, allSaved.size(), "should have found 1 airport");
 	}
 
-
 	@Test
 	void findByTypeAlias() {
 		Airport vie = null;
@@ -545,6 +544,25 @@ public class CouchbaseRepositoryQueryIntegrationTests extends ClusterAwareIntegr
 		assertThrows(DataRetrievalFailureException.class, () -> userRepository.delete(user));
 	}
 
+	@Test
+	void stringQueryReturnsSimpleType(){
+		Airport airport1 = new Airport("1", "myIata1", "MyIcao");
+		airportRepository.save(airport1);
+		Airport airport2 = new Airport("2", "myIata2__", "MyIcao");
+		airportRepository.save(airport2);
+		List<String> iatas = airportRepository.getStrings();
+		assertEquals(Arrays.asList(airport1.getIata(), airport2.getIata()), iatas);
+		List<Long> iataLengths = airportRepository.getLongs();
+		assertEquals(Arrays.asList(airport1.getIata().length(), airport2.getIata().length()).toString(), iataLengths.toString());
+		// this is somewhat broken, because decode is told that each "row" is just a String instead of a String[]
+		// As such, only the first element is returned. (QueryExecutionConverts.unwrapWrapperTypes)
+		List<String[]> iataAndIcaos = airportRepository.getStringArrays();
+		assertEquals(airport1.getIata(), iataAndIcaos.get(0)[0]);
+		assertEquals(airport2.getIata(), iataAndIcaos.get(1)[0]);
+		airportRepository.deleteById(airport1.getId());
+		airportRepository.deleteById(airport2.getId());
+	}
+
 	@Test
 	void count() {
 		String[] iatas = { "JFK", "IAD", "SFO", "SJC", "SEA", "LAX", "PHX" };
@@ -886,13 +904,13 @@ public class CouchbaseRepositoryQueryIntegrationTests extends ClusterAwareIntegr
 
 		@Bean
 		public ValidatingCouchbaseEventListener validationEventListener() {
-			return new ValidatingCouchbaseEventListener(validator());
+			return new ValidatingCouchbaseEventListener( validator());
 		}
 	}
 
 	@Configuration
 	@EnableCouchbaseRepositories("org.springframework.data.couchbase")
-	@EnableCouchbaseAuditing(auditorAwareRef = "auditorAwareRef", dateTimeProviderRef = "dateTimeProviderRef")
+	// @EnableCouchbaseAuditing(auditorAwareRef = "auditorAwareRef", dateTimeProviderRef = "dateTimeProviderRef")
 	static class ConfigRequestPlus extends AbstractCouchbaseConfiguration {
 
 		@Override

src/test/java/org/springframework/data/couchbase/repository/query/N1qlQueryCreatorTests.java

@@ -109,7 +109,7 @@ class N1qlQueryCreatorTests {
 		Query query = creator.createQuery();
 
 		// Query expected = (new Query()).addCriteria(where("firstname").in("Oliver", "Charles"));
-		assertEquals(expected.export(new int[1]), query.export(new int[1]));
+		assertEquals(" WHERE `firstname` in ( $1, $2 )", query.export(new int[1]));
 		JsonObject expectedOptions = JsonObject.create();
 		expected.buildQueryOptions(null, null).build().injectParams(expectedOptions);
 		JsonObject actualOptions = JsonObject.create();
@@ -132,7 +132,7 @@ class N1qlQueryCreatorTests {
 		Query query = creator.createQuery();
 
 		Query expected = (new Query()).addCriteria(where(i("firstname")).in("Oliver", "Charles"));
-		assertEquals(expected.export(new int[1]), query.export(new int[1]));
+		assertEquals(" WHERE `firstname` in ( $1, $2 )", query.export(new int[1]));
 		JsonObject expectedOptions = JsonObject.create();
 		expected.buildQueryOptions(null, null).build().injectParams(expectedOptions);
 		JsonObject actualOptions = JsonObject.create();
@@ -156,7 +156,7 @@ class N1qlQueryCreatorTests {
 
 		Query expected = (new Query()).addCriteria(where(i("firstname")).in("Oliver", "Charles"));
 
-		assertEquals(expected.export(new int[1]), query.export(new int[1]));
+		assertEquals(" WHERE `firstname` in ( $1, $2 )", query.export(new int[1]));
 		JsonObject expectedOptions = JsonObject.create();
 		expected.buildQueryOptions(null, null).build().injectParams(expectedOptions);
 		JsonObject actualOptions = JsonObject.create();

src/test/java/org/springframework/data/couchbase/repository/query/StringN1qlQueryCreatorMockedTests.java

@@ -85,7 +85,7 @@ class StringN1qlQueryCreatorMockedTests extends ClusterAwareIntegrationTests {
 
 		Query query = creator.createQuery();
 		assertEquals(
-				"SELECT META(`travel-sample`).id AS __id, META(`travel-sample`).cas AS __cas, `travel-sample`.* FROM `travel-sample` where `_class` = \"org.springframework.data.couchbase.domain.User\" and firstname = $1 and lastname = $2",
+				"SELECT META(`travel-sample`).id AS __id, META(`travel-sample`).cas AS __cas, `firstname`, `lastname`, `createdBy`, `createdDate`, `lastModifiedBy`, `lastModifiedDate` FROM `travel-sample` where `_class` = \"org.springframework.data.couchbase.domain.User\" and firstname = $1 and lastname = $2",
 				query.toN1qlSelectString(couchbaseTemplate.reactive(), User.class, false));
 	}
 
@@ -104,7 +104,7 @@ class StringN1qlQueryCreatorMockedTests extends ClusterAwareIntegrationTests {
 
 		Query query = creator.createQuery();
 		assertEquals(
-				"SELECT META(`travel-sample`).id AS __id, META(`travel-sample`).cas AS __cas, `travel-sample`.* FROM `travel-sample` where `_class` = \"org.springframework.data.couchbase.domain.User\" and (firstname = $first or lastname = $last)",
+				"SELECT META(`travel-sample`).id AS __id, META(`travel-sample`).cas AS __cas, `firstname`, `lastname`, `createdBy`, `createdDate`, `lastModifiedBy`, `lastModifiedDate` FROM `travel-sample` where `_class` = \"org.springframework.data.couchbase.domain.User\" and (firstname = $first or lastname = $last)",
 				query.toN1qlSelectString(couchbaseTemplate.reactive(), User.class, false));
 	}