Add registerDataSerializableSessionSerializer() method.

Refactor doInitialization() to delegate to registerDataSerializableSessionSerializer() when registering custom Spring Session DataSerializers/SessionSerializer implementations.

Remove sessionRegionName configuration parameters and state.

spring-session-data-geode/src/integration-test/java/org/springframework/session/data/gemfire/serialization/data/support/DataSerializableSessionSerializerInitializerIntegrationTests.java

@@ -18,6 +18,7 @@ package org.springframework.session.data.gemfire.serialization.data.support;
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.times;
@@ -59,7 +60,7 @@ import org.springframework.session.data.gemfire.serialization.data.provider.Data
  * @see org.springframework.session.data.gemfire.serialization.data.provider.DataSerializableSessionAttributesSerializer
  * @see org.springframework.session.data.gemfire.serialization.data.provider.DataSerializableSessionSerializer
  * @see org.springframework.session.data.gemfire.serialization.data.support.DataSerializableSessionSerializerInitializer
- * @since 1.0.0
+ * @since 2.1.1
  */
 @RunWith(MockitoJUnitRunner.class)
 public class DataSerializableSessionSerializerInitializerIntegrationTests extends AbstractGemFireIntegrationTests {
@@ -99,7 +100,18 @@ public class DataSerializableSessionSerializerInitializerIntegrationTests extend
 	}
 
 	@Test
-	public void initializeWithCacheAndPropertiesParametersSetGemFireCacheReferenceAndCallsDoInitialize() {
+	public void ofFactoryMethodWithNullCache() {
+
+		DataSerializableSessionSerializerInitializer initializer =
+			DataSerializableSessionSerializerInitializer.of(null);
+
+		assertThat(initializer).isNotNull();
+		assertThat(initializer.getGemFireCache().orElse(null)).isNull();
+		assertThat(initializer.getLogger()).isNotNull();
+	}
+
+	@Test
+	public void initializeWithCacheAndPropertiesParametersSetsGemFireCacheReferenceAndCallsDoInitialize() {
 
 		DataSerializableSessionSerializerInitializer initializer =
 			spy(DataSerializableSessionSerializerInitializer.of(null));
@@ -116,6 +128,23 @@ public class DataSerializableSessionSerializerInitializerIntegrationTests extend
 		verify(initializer, times(1)).doInitialization();
 	}
 
+	@Test
+	public void doInitializationResolvesGemFireCachesRegistersSessionSerializersAndConfiguresDataSerialization() {
+
+		DataSerializableSessionSerializerInitializer initializer =
+			spy(DataSerializableSessionSerializerInitializer.of(null));
+
+		doReturn(this.mockCache).when(initializer).resolveGemFireCache();
+		doNothing().when(initializer).registerDataSerializableSessionSerializer();
+		doNothing().when(initializer).configureUseDataSerialization();
+
+		initializer.doInitialization();
+
+		verify(initializer, times(1)).resolveGemFireCache();
+		verify(initializer, times(1)).registerDataSerializableSessionSerializer();
+		verify(initializer, times(1)).configureUseDataSerialization();
+	}
+
 	@Test
 	public void doInitializationIsCorrect() {
 
@@ -159,6 +188,7 @@ public class DataSerializableSessionSerializerInitializerIntegrationTests extend
 			assertThat(InitializingGemFireOperationsSessionRepository.INSTANCE.isDataSerializationConfigured()).isFalse();
 
 			verify(initializer, times(1)).resolveGemFireCache();
+			verify(initializer, never()).registerDataSerializableSessionSerializer();
 			verify(initializer, never()).configureUseDataSerialization();
 		}
 	}

spring-session-data-geode/src/main/java/org/springframework/session/data/gemfire/serialization/data/support/DataSerializableSessionSerializerInitializer.java

@@ -29,7 +29,6 @@ import org.apache.geode.cache.GemFireCache;
 
 import org.springframework.lang.Nullable;
 import org.springframework.session.Session;
-import org.springframework.session.data.gemfire.config.annotation.web.http.GemFireHttpSessionConfiguration;
 import org.springframework.session.data.gemfire.serialization.data.provider.DataSerializableSessionSerializer;
 import org.springframework.session.data.gemfire.support.GemFireOperationsSessionRepositorySupport;
 
@@ -37,10 +36,10 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 /**
- * Register the Spring Session for Apache Geode/Pivotal GemFire {@link DataSerializableSessionSerializer}
- * with Apache Geode/Pivotal GemFire's DataSerialization framework as the {@link DataSerializer} used to handle
- * de/serialization of the {@link Session}, the {@literal Session Attributes} and any application
- * domain model objects contained in the {@link Session} (if necessary).
+ * Register the custom Spring Session {@link DataSerializableSessionSerializer} with Apache Geode/Pivotal GemFire's
+ * DataSerialization framework as the {@link DataSerializer} used to handle de/serialization of the {@link Session},
+ * the {@link Session} Attributes and any application domain model objects contained in the {@link Session}
+ * (if necessary).
  *
  * @author John Blum
  * @see java.util.Properties
@@ -59,16 +58,9 @@ import org.slf4j.LoggerFactory;
 @SuppressWarnings("unused")
 public class DataSerializableSessionSerializerInitializer implements Declarable {
 
-	private static final String DEFAULT_SESSION_REGION_NAME =
-		GemFireHttpSessionConfiguration.DEFAULT_SESSION_REGION_NAME;
-
-	private static final String SESSION_REGION_NAME_PROPERTY = "spring.session.data.gemfire.session.region.name";
-
 	private volatile GemFireCache gemfireCache;
 
-	private Logger logger = LoggerFactory.getLogger(getClass());
-
-	private String sessionRegionName;
+	private final Logger logger = LoggerFactory.getLogger(getClass());
 
 	/**
 	 * Factory method used to construct a new instance of {@link DataSerializableSessionSerializerInitializer}
@@ -157,8 +149,8 @@ public class DataSerializableSessionSerializerInitializer implements Declarable
 	public void doInitialization() {
 
 		resolveGemFireCache();
+		registerDataSerializableSessionSerializer();
 		configureUseDataSerialization();
-		DataSerializableSessionSerializer.register();
 	}
 
 	/**
@@ -172,6 +164,16 @@ public class DataSerializableSessionSerializerInitializer implements Declarable
 		return getGemFireCache().orElseGet(CacheFactory::getAnyInstance);
 	}
 
+	/**
+	 * Registers the {@link DataSerializableSessionSerializer} with Apache Geode/Pivotal GemFire
+	 * in order to properly handle the Spring Session types.
+	 *
+	 * @see org.springframework.session.data.gemfire.serialization.data.provider.DataSerializableSessionSerializer#register()
+	 */
+	protected void registerDataSerializableSessionSerializer() {
+		DataSerializableSessionSerializer.register();
+	}
+
 	/**
 	 * Configures Spring Session (for Apache Geode/Pivotal GemFire) to "use" Apache Geode/Pivotal GemFire's
 	 * DataSerialization framework and Delta capable {@link DataSerializable} Session objects.