SGF-327 - Avoid setting null values with GemFire's Cache Region put(key, value) operation when GemFire is used as the caching provider in Spring's Cache Abstraction (@Cacheable).

src/test/resources/org/springframework/data/gemfire/support/CachingWithGemFireIntegrationTest-context.xml

@@ -0,0 +1,70 @@
+<?xml version="1.0" encoding="utf-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+	   xmlns:cache="http://www.springframework.org/schema/cache"
+	   xmlns:context="http://www.springframework.org/schema/context"
+	   xmlns:gfe="http://www.springframework.org/schema/gemfire"
+	   xmlns:p="http://www.springframework.org/schema/p"
+	   xmlns:util="http://www.springframework.org/schema/util"
+	   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	   xsi:schemaLocation="
+        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
+        http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd
+        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
+        http://www.springframework.org/schema/gemfire http://www.springframework.org/schema/gemfire/spring-gemfire.xsd
+        http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd
+  ">
+
+	<util:properties id="gemfireProperties">
+		<prop key="name">SpringGemFireCachingIntegrationTest</prop>
+		<prop key="mcast-port">0</prop>
+		<prop key="log-level">warning</prop>
+	</util:properties>
+
+	<gfe:cache properties-ref="gemfireProperties"/>
+
+	<gfe:region-template id="Template" initial-capacity="51" load-factor="0.75"/>
+
+	<cache:annotation-driven/>
+
+	<bean id="cacheManager" class="org.springframework.data.gemfire.support.GemfireCacheManager" p:cache-ref="gemfireCache"/>
+
+	<context:annotation-config/>
+
+	<util:map id="NamedNumbersMap" map-class="java.util.concurrent.ConcurrentHashMap"
+			  key-type="java.lang.String" value-type="java.lang.Integer">
+		<entry key="zero" value="0"/>
+		<entry key="one" value="1"/>
+		<entry key="two" value="2"/>
+		<entry key="three" value="3"/>
+		<entry key="four" value="4"/>
+		<entry key="five" value="5"/>
+		<entry key="size" value="6"/>
+		<entry key="seven" value="7"/>
+		<entry key="eight" value="8"/>
+		<entry key="nine" value="9"/>
+	</util:map>
+
+	<bean id="namedNumbersRepo" class="org.springframework.data.gemfire.support.CachingWithGemFireIntegrationTest$NamedNumbersInMemoryRepository">
+		<property name="namedNumbers" ref="NamedNumbersMap"/>
+	</bean>
+
+	<bean id="namedNumbersService" class="org.springframework.data.gemfire.support.CachingWithGemFireIntegrationTest$NamedNumbersService">
+		<property name="namedNumbersRepo" ref="namedNumbersRepo"/>
+	</bean>
+
+	<beans profile="replica">
+		<gfe:replicated-region id="NamedNumbersRegion" persistent="false" key-constraint="java.lang.String"
+							   value-constraint="java.lang.Integer" template="Template"/>
+	</beans>
+
+	<beans profile="partition">
+		<gfe:partitioned-region id="NamedNumbersRegion" persistent="false" key-constraint="java.lang.String"
+								value-constraint="java.lang.Integer" template="Template"/>
+	</beans>
+
+	<beans profile="local">
+		<gfe:partitioned-region id="NamedNumbersRegion" persistent="false" key-constraint="java.lang.String"
+								value-constraint="java.lang.Integer" template="Template"/>
+	</beans>
+
+</beans>