Handle Transient Annotation. (#1173)

Closes #1147.

Co-authored-by: mikereiche <michael.reiche@couchbase.com>

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

@@ -34,6 +34,7 @@ import org.springframework.context.ApplicationContextAware;
 import org.springframework.core.CollectionFactory;
 import org.springframework.core.convert.ConversionService;
 import org.springframework.core.convert.support.DefaultConversionService;
+import org.springframework.data.annotation.Transient;
 import org.springframework.data.convert.EntityInstantiator;
 import org.springframework.data.couchbase.core.mapping.CouchbaseDocument;
 import org.springframework.data.couchbase.core.mapping.CouchbaseList;
@@ -532,6 +533,10 @@ public class MappingCouchbaseConverter extends AbstractCouchbaseConverter implem
 						idAttributes.put(order, convertToString(propertyObj));
 					}
 
+					if (prop.isAnnotationPresent(Transient.class)) {
+						return;
+					}
+
 					if (!conversions.isSimpleType(propertyObj.getClass())) {
 						writePropertyInternal(propertyObj, target, prop, false);
 					} else {

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

@@ -24,6 +24,7 @@ import org.springframework.data.annotation.Id;
 import org.springframework.data.annotation.LastModifiedBy;
 import org.springframework.data.annotation.LastModifiedDate;
 import org.springframework.data.annotation.PersistenceConstructor;
+import org.springframework.data.annotation.Transient;
 import org.springframework.data.annotation.Version;
 import org.springframework.data.couchbase.core.mapping.Document;
 
@@ -41,6 +42,8 @@ public class User extends ComparableEntity {
 	@Id private String id;
 	private String firstname;
 	private String lastname;
+	@Transient
+	private String transientInfo;
 	@CreatedBy private String createdBy;
 	@CreatedDate private long createdDate;
 	@LastModifiedBy private String lastModifiedBy;
@@ -94,4 +97,10 @@ public class User extends ComparableEntity {
 		return Objects.hash(id, firstname, lastname);
 	}
 
+	public String getTransientInfo(){
+		return transientInfo;
+	}
+	public void setTransientInfo(String something) {
+		transientInfo = something;
+	}
 }

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

@@ -29,6 +29,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Locale;
+import java.util.Optional;
 import java.util.concurrent.Callable;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
@@ -222,6 +223,16 @@ public class CouchbaseRepositoryQueryIntegrationTests extends ClusterAwareIntegr
 		}
 	}
 
+	@Test
+	public void testTransient() {
+		User user = new User("1", "Dave", "Wilson");
+		user.setTransientInfo("something");
+		userRepository.save(user);
+		Optional<User> foundUser = userRepository.findById(user.getId());
+		assertEquals(null, foundUser.get().getTransientInfo());
+		userRepository.delete(user);
+	}
+
 	@Test
 	public void testCas() {
 		User user = new User("1", "Dave", "Wilson");